Inngangur

Hvað er PRECC?

PRECC (Fyrirbyggjandi villuleiðrétting fyrir Claude Code) er Rust-tól sem grípur bash-skipanir Claude Code í gegnum opinberu PreToolUse hook-aðferðina. Það lagar villur áður en þær gerast, sparar tokens og útilokar endurtekningarlykkjur.

Ókeypis fyrir samfélagsnotendur.

Vandamálið

Claude Code sóar verulegum fjölda tokens í villur sem hægt er að koma í veg fyrir:

• Villur í röngu skráarsafni – Að keyra cargo build í foreldraskráarsafni án Cargo.toml, svo reyna aftur eftir að hafa lesið villuna.
• Endurtekningarlykkjur – Misheppnuð skipun gefur ítarlegt úttak, Claude les það, hugsar um það og reynir aftur. Hver hringur eyðir hundruðum tokens.
• Ítarlegt úttak – Skipanir eins og find eða ls -R skila þúsundum lína sem Claude verður að vinna úr.

Fjórar stoðir

Samhengisleiðrétting (cd-prepend)

Greinir þegar skipanir eins og cargo build eða npm test keyra í rangri möppu og bætir cd /correct/path && framan á fyrir keyrslu.

GDB villuleit

Greinir tækifæri til að tengja GDB fyrir dýpri villuleit á segfaults og hruni, og veitir skipulagðar villuleitarupplýsingar í stað hrárra core dumps.

Lotunám

Námur Claude Code lotuskrár fyrir villu-lagfæringar pör. Þegar sama villa endurtekur sig veit PRECC nú þegar lagfæringuna og beitir henni sjálfkrafa.

Sjálfvirknihæfileikar

Safn innbyggðra og náma hæfileika sem passa við skipanamynstur og skrifa þau aftur. Hæfileikar eru skilgreindir sem TOML-skrár eða SQLite-raðir, sem gerir þá auðvelt að skoða, breyta og deila.

Hvernig það virkar (30 sekúndna útgáfa)

1. Claude Code er að fara að keyra bash-skipun.
2. PreToolUse hook sendir skipunina til precc-hook sem JSON í gegnum stdin.
3. precc-hook keyrir skipunina í gegnum leiðsluna (hæfileikar, skráarsafnsleiðrétting, þjöppun) á innan við 3 millisekúndum.
4. Lagfærða skipunin er skilað sem JSON í gegnum stdout.
5. Claude Code keyrir lagfærðu skipunina í staðinn.

Léttvægar villur eru sameinaðar; ástæða endurskriftarinnar fer með í svari hook-sins, svo hver leiðrétting er endurskoðanleg — ekki þögul.

Öryggismörk

PRECC endurskrifar aðeins þegar merkingarleg jafngildi er sannanleg varðveitt eða notandastaðfestanleg. Eyðileggjandi skipanir (rm, git push --force, git reset --hard) eru aldrei endurskrifaðar, jafnvel þótt hæfileiki passi. Sérhver breyting verður að vera afmörkuð — endurskrifuð skipun verður enn að innihalda kjarnatóka upprunalegu skipunarinnar. Óafmarkaðar endurskriftir eru sjálfkrafa bakfærðar. Sérhver beitt endurskrift er skráð og birt svo þú getir endurskoðað, afvirkjað eða afturkallað hana.

Aðlögunarþjöppun

Ef skipun mistekst eftir þjöppun, sleppir PRECC sjálfkrafa þjöppun við endurtilraun svo Claude fái fullt óþjappað úttak til villuleitar.

Beinar notkunartölur

Current version –:

Measured Savings (Ground Truth)

Savings by Release

Þessar tölur uppfærast sjálfkrafa úr nafnlausri fjarmælingu.

Tenglar

• GitHub: https://github.com/peria-ai/precc-cc
• Vefsíða: https://peria.ai
• Skjölun: https://precc.cc

Uppsetning

Hröð uppsetning (Linux / macOS)

curl -fsSL https://peria.ai/install.sh | bash

Þetta sækir nýjustu keyrsluskrá útgáfunnar fyrir þinn vettvang, staðfestir SHA256-gáttalykil og setur hana í ~/.local/bin/.

Eftir uppsetningu, ræstu PRECC:

precc init

precc init skráir PreToolUse hook í Claude Code, býr til gagnamöppur og frumstillir þekkingargagnagrunn.

Uppsetningarvalkostir

SHA256-staðfesting

Sjálfgefið staðfestir uppsetningarforritið gáttalykil keyrsluskráar á móti opinberum SHA256-lykli. Til að sleppa staðfestingu (ekki ráðlagt):

curl -fsSL https://peria.ai/install.sh | bash -s -- --no-verify

Sérsniðið uppsetningarforskeyti

Setja upp á sérsniðinni staðsetningu:

curl -fsSL https://peria.ai/install.sh | bash -s -- --prefix /opt/precc

Viðbótartól (–extras)

PRECC fylgir valfrjáls viðbótartól. Settu þau upp með --extras:

curl -fsSL https://peria.ai/install.sh | bash -s -- --extras

Þetta setur upp:

Windows (PowerShell)

irm https://peria.ai/install.ps1 | iex

Ræstu síðan:

precc init

Handvirk uppsetning

1. Sæktu keyrsluskrá útgáfunnar fyrir þinn vettvang frá GitHub Releases.
2. Staðfestu SHA256-gáttalykil á móti .sha256-skránni í útgáfunni.
3. Settu keyrsluskrána í möppu á PATH (t.d. ~/.local/bin/).
4. Keyrðu precc init.

Uppfærsla

precc update

Þvinga uppfærslu í ákveðna útgáfu:

precc update --force --version 0.3.0

Virkja sjálfvirkar uppfærslur:

precc update --auto

Staðfesting uppsetningar

$ precc --version
precc 0.3.0

$ precc savings
Session savings: 0 tokens (no commands intercepted yet)

Ef precc finnst ekki, gakktu úr skugga um að ~/.local/bin sé á PATH.

Hraðleiðbeiningar

Komdu PRECC í gang á 5 mínútum.

Skref 1: Setja upp

curl -fsSL https://peria.ai/install.sh | bash

Skref 2: Frumstilla

$ precc init
[precc] Hook registered with Claude Code
[precc] Created ~/.local/share/precc/
[precc] Initialized heuristics.db with 8 built-in skills
[precc] Ready.

Skref 3: Staðfesta að hook sé virkt

$ precc skills list
  # Name               Type      Triggers
  1 cargo-wrong-dir    built-in  cargo build/test/clippy outside Rust project
  2 git-wrong-dir      built-in  git * outside a repo
  3 go-wrong-dir       built-in  go build/test outside Go module
  4 make-wrong-dir     built-in  make without Makefile in cwd
  5 npm-wrong-dir      built-in  npm/npx/pnpm/yarn outside Node project
  6 python-wrong-dir   built-in  python/pytest/pip outside Python project
  7 jj-translate       built-in  git * in jj-colocated repo
  8 asciinema-gif      built-in  asciinema rec

Skref 4: Notaðu Claude Code eðlilega

Opnaðu Claude Code og vinndu eins og venjulega. PRECC keyrir hljóðlega í bakgrunni. Þegar Claude gefur út skipun sem myndi mistakast lagar PRECC hana fyrir keyrslu.

Dæmi: Cargo-smíði í rangri möppu

Segjum að verkefnið þitt sé í ~/projects/myapp/ og Claude gefi út:

cargo build

frá ~/projects/ (einu stigi of hátt, ekkert Cargo.toml þar).

Án PRECC: Claude fær villuna could not find Cargo.toml in /home/user/projects or any parent directory, les hana, rökhugar og reynir aftur með cd myapp && cargo build. Kostnaður: ~2.000 tákn sóuð.

Með PRECC: Hook greinir Cargo.toml sem vantar, finnur það í myapp/ og endurskrifar skipunina í:

cd /home/user/projects/myapp && cargo build

Claude sér aldrei villu. Engin tákn sóuð.

Skref 5: Athugaðu sparnað þinn

Eftir lotu, sjáðu hversu mörg tákn PRECC sparaði:

$ precc savings
Session Token Savings
=====================
Total estimated savings: 4,312 tokens

Breakdown:
  Pillar 1 (cd prepends):       2,104 tokens  (3 corrections)
  Pillar 4 (skill activations):   980 tokens  (2 activations)
  RTK rewrites:                 1,228 tokens  (5 rewrites)

Næstu skref

• Þekking – Sjá alla tiltæka þekkingu og hvernig á að búa til sína eigin.
• Hook Pipeline – Skilja hvað gerist undir húddinu.
• Sparnaður – Ítarleg greining á táknasparnaði.

Leyfi

PRECC býður upp á tvö stig: Community (ókeypis) og Pro.

Community-stig (ókeypis)

Community-stigið inniheldur:

• Öll innbyggð þekking (möppuleiðrétting, jj-þýðing o.fl.)
• Hook pipeline með fullum Pillar 1 og Pillar 4 stuðningi
• Grunn precc savings yfirlit
• Lotugreining með precc ingest
• Ótakmörkuð staðbundin notkun

Pro-stig

Pro opnar viðbótareiginleika:

• Ítarleg sparnaðarsundurliðun – precc savings --all með skipanagreiningu
• GIF-upptaka – precc gif til að búa til hreyfimynda-GIF af skjástöðvu
• IP-landsvæðaeftirlit – Fyrir stýrð umhverfi
• Tölvupóstsskýrslur – precc mail report til að senda greiningar
• GitHub Actions greining – precc gha til kembi misheppnaðra verkflæða
• Samhengsþjöppun – precc compress til hagræðingar á CLAUDE.md
• Forgangsstuðningur

Virkjun leyfis

$ precc license activate XXXX-XXXX-XXXX-XXXX --email you@example.com
[precc] License activated for you@example.com
[precc] Plan: Pro
[precc] Expires: 2027-04-03

Athugun á stöðu leyfis

$ precc license status
License: Pro
Email:   you@example.com
Expires: 2027-04-03
Status:  Active

GitHub Sponsors virkjun

Ef þú styrkir PRECC í gegnum GitHub Sponsors er leyfið þitt virkjað sjálfkrafa í gegnum GitHub-netfangið þitt. Enginn lykill þarfnast – passaðu bara að styrktarnetfangið þitt passi:

$ precc license status
License: Pro (GitHub Sponsors)
Email:   you@example.com
Status:  Active (auto-renewed)

Fingrafar tækis

Hvert leyfi er bundið við fingrafar tækis. Skoðaðu þitt:

$ precc license fingerprint
Fingerprint: a1b2c3d4e5f6...

Ef þú þarft að flytja leyfið á nýja tölvu, afvirkjaðu fyrst:

precc license deactivate

Virkjaðu síðan á nýju tölvunni.

Leyfi útrunnið?

Þegar Pro-leyfi rennur út snýr PRECC aftur í Community-stig. Öll innbyggð þekking og grunnvirkni heldur áfram að virka. Aðeins Pro-sérstakir eiginleikar verða óaðgengilegir. Sjá FAQ fyrir frekari upplýsingar.

Hook Pipeline

precc-hook keyrsluskráin er kjarni PRECC. Hún situr á milli Claude Code og skeljarinnar og vinnur úr hverri bash-skipun á undir 5 millisekúndum.

Hvernig Claude Code kallar á hook

Claude Code styður PreToolUse hooks – ytri forrit sem geta skoðað og breytt tólsinntökum fyrir keyrslu. Þegar Claude ætlar að keyra bash-skipun sendir það JSON til precc-hook á stdin og les svarið frá stdout.

Pipeline-stig

Claude Code
    |
    v
+---------------------------+
| 1. Parse JSON stdin       |  Read the command from Claude Code
+---------------------------+
    |
    v
+---------------------------+
| 2. Skill matching         |  Query heuristics.db for matching skills (Pillar 4)
+---------------------------+
    |
    v
+---------------------------+
| 3. Directory correction   |  Resolve correct working directory (Pillar 1)
+---------------------------+
    |
    v
+---------------------------+
| 4. GDB check              |  Detect debug opportunities (Pillar 2)
+---------------------------+
    |
    v
+---------------------------+
| 5. RTK rewriting          |  Apply command rewrites for token savings
+---------------------------+
    |
    v
+---------------------------+
| 6. Emit JSON stdout       |  Return modified command to Claude Code
+---------------------------+
    |
    v
  Shell executes corrected command

Dæmi: JSON inntak og úttak

Inntak (frá Claude Code)

{
  "tool_input": {
    "command": "cargo build"
  }
}

PRECC greinir að núverandi mappa hefur ekki Cargo.toml, en ./myapp/Cargo.toml er til.

Úttak (til Claude Code)

{
  "hookSpecificOutput": {
    "updatedInput": {
      "command": "cd /home/user/projects/myapp && cargo build"
    }
  }
}

Ef engrar breytingar er þörf er updatedInput.command tómt og Claude Code notar upprunalegu skipunina.

Smáatriði stiga

Stig 1: Þátta JSON

Les fullt JSON-hlut frá stdin. Dregur út tool_input.command. Ef þáttun mistekst hættir hook strax og Claude Code notar upprunalegu skipunina (fail-open hönnun).

Stig 2: Þekkingarsamsvarun

Fyrirspurnir í SQLite-heuristics gagnagrunn eftir þekkingu þar sem triggermynstur passar við skipunina. Þekking er skoðuð í forgangsröð. Bæði innbyggð TOML-þekking og lærð þekking er metin.

Stig 3: Möppuleiðrétting

Fyrir smíðaskipanir (cargo, go, make, npm, python o.fl.) athugar hvort vænt verkefnisskrá er til í núverandi möppu. Ef ekki, skannar nálægar möppur eftir næstu samsvarun og bætir cd <dir> && framan á.

Möppuskönnunin notar vistuð skráarkerfisyfirlit með 5-sekúndna TTL til að vera hröð.

Stig 4: GDB-athugun

Ef skipunin er líkleg til að valda hruni (t.d. keyrsla á kembikeyrsluskrá), getur PRECC stungið upp á eða sett inn GDB-umbúðir til að fanga skipulögð kembiúttak í stað hrárra hrunskráa.

Stig 5: RTK-endurskrifun

Beitir RTK (Rewrite Toolkit) reglum sem stytta orðmargar skipanir, bæla niður hávaðasamt úttak eða endurskipuleggja skipanir fyrir táknaskilvirkni.

Stig 6: Gefa út JSON

Raðar breyttri skipun aftur í JSON og skrifar á stdout. Ef engar breytingar voru gerðar gefur úttakið Claude Code merki um að nota upprunalegu skipunina.

Afköst

Allt pipeline lýkur á undir 5 millisekúndum (p99). Lykilhagræðingar:

• SQLite í WAL-ham fyrir læsingarlausar samhliða lesanir
• Fyrirfram þýdd regex-mynstur fyrir þekkingarsamsvarun
• Vistuð skráarkerfisskön (5-sekúndna TTL)
• Engin netköll á skiptu leiðinni
• Fail-open: öll villa fer í gegn til upprunalegu skipunarinnar

Handvirk prófun á hook

Þú getur kallað á hook beint:

$ echo '{"tool_input":{"command":"cargo build"}}' | precc-hook
{"hookSpecificOutput":{"updatedInput":{"command":"cd /home/user/myapp && cargo build"}}}

Þekking

Þekking er mynstursamsvörunarreglur sem PRECC notar til að greina og leiðrétta skipanir. Þær geta verið innbyggðar (sendar sem TOML-skrár) eða lærðar úr lotunarskrám.

Innbyggð þekking

Listi yfir þekkingu

$ precc skills list
  # Name               Type      Triggers
  1 cargo-wrong-dir    built-in  cargo build/test/clippy outside Rust project
  2 git-wrong-dir      built-in  git * outside a repo
  3 go-wrong-dir       built-in  go build/test outside Go module
  4 make-wrong-dir     built-in  make without Makefile in cwd
  5 npm-wrong-dir      built-in  npm/npx/pnpm/yarn outside Node project
  6 python-wrong-dir   built-in  python/pytest/pip outside Python project
  7 jj-translate       built-in  git * in jj-colocated repo
  8 asciinema-gif      built-in  asciinema rec
  9 fix-pytest-path    mined     pytest with wrong test path

Þekkingarsmáatriði

$ precc skills show cargo-wrong-dir
Name:        cargo-wrong-dir
Type:        built-in
Source:      skills/builtin/cargo-wrong-dir.toml
Description: Detects cargo commands run outside a Rust project and prepends
             cd to the directory containing the nearest Cargo.toml.
Trigger:     ^cargo\s+(build|test|clippy|run|check|bench|doc)
Action:      prepend_cd
Marker:      Cargo.toml
Activations: 12

Útflutningur þekkingar í TOML

$ precc skills export cargo-wrong-dir
[skill]
name = "cargo-wrong-dir"
description = "Prepend cd for cargo commands outside a Rust project"
trigger = "^cargo\\s+(build|test|clippy|run|check|bench|doc)"
action = "prepend_cd"
marker = "Cargo.toml"
priority = 10

Breyting á þekkingu

$ precc skills edit cargo-wrong-dir

Þetta opnar þekkingarskilgreiningu í $EDITOR. Eftir vistun er þekkingin endurhlaðin sjálfkrafa.

Advise-skipunin

precc skills advise greinir nýlega lotu þína og stingur upp á nýrri þekkingu byggðri á endurteknum mynstrum:

$ precc skills advise
Analyzed 47 commands from the last session.

Suggested skills:
  1. docker-wrong-dir: You ran `docker compose up` outside the project root 3 times.
     Suggested trigger: ^docker\s+compose
     Suggested marker: docker-compose.yml

  2. terraform-wrong-dir: You ran `terraform plan` outside the infra directory 2 times.
     Suggested trigger: ^terraform\s+(plan|apply|init)
     Suggested marker: main.tf

Accept suggestion [1/2/skip]?

Flokkun þekkingar

$ precc skills cluster

Flokkar svipaða lærða þekkingu saman til að auðkenna óþarfa eða skarast mynstur.

Lærð vs. innbyggð þekking

Innbyggð þekking fylgir PRECC og er skilgreind í skills/builtin/*.toml. Hún nær yfir algengustu röng-möppu villurnar.

Lærð þekking er búin til af precc ingest eða precc-learner-þjóninum úr lotunarskránum þínum. Hún er geymd í ~/.local/share/precc/heuristics.db og er sértæk fyrir þitt verkflæði. Sjá Mining fyrir nánari upplýsingar.

Sparnaður

PRECC rekur áætlaðan táknasparnað frá hverri fangstöðvun. Notaðu precc savings til að sjá hversu miklu sóun PRECC hefur komið í veg fyrir.

Fljótlegt yfirlit

$ precc savings
Session Token Savings
=====================
Total estimated savings: <span data-stat="session_tokens_saved">8,741</span> tokens

Breakdown:
  Pillar 1 (cd prepends):         <span data-stat="session_p1_tokens">3,204</span> tokens  (<span data-stat="session_p1_count">6</span> corrections)
  Pillar 4 (skill activations):   <span data-stat="session_p4_tokens">1,560</span> tokens  (<span data-stat="session_p4_count">4</span> activations)
  RTK rewrites:                   <span data-stat="session_rtk_tokens">2,749</span> tokens  (<span data-stat="session_rtk_count">11</span> rewrites)
  Lean-ctx wraps:                 <span data-stat="session_lean_tokens">1,228</span> tokens  (<span data-stat="session_lean_count">2</span> wraps)

Ítarleg sundurliðun (Pro)

$ precc savings --all
Session Token Savings (Detailed)
================================
Total estimated savings: <span data-stat="session_tokens_saved">8,741</span> tokens

Command-by-command:
  #  Time   Command                          Saving   Source
  1  09:12  cargo build                      534 tk   cd prepend (cargo-wrong-dir)
  2  09:14  cargo test                       534 tk   cd prepend (cargo-wrong-dir)
  3  09:15  git status                       412 tk   cd prepend (git-wrong-dir)
  4  09:18  npm install                      824 tk   cd prepend (npm-wrong-dir)
  5  09:22  find . -name "*.rs"              387 tk   RTK rewrite (output truncation)
  6  09:25  cat src/main.rs                  249 tk   RTK rewrite (lean-ctx wrap)
  7  09:31  cargo clippy                     534 tk   cd prepend (cargo-wrong-dir)
  ...

Pillar Breakdown:
  Pillar 1 (context resolution):   <span data-stat="session_p1_tokens">3,204</span> tokens  <span data-stat="session_p1_pct">36.6</span>%
  Pillar 2 (GDB debugging):            0 tokens   0.0%
  Pillar 3 (mined preventions):        0 tokens   0.0%
  Pillar 4 (automation skills):    <span data-stat="session_p4_tokens">1,560</span> tokens  <span data-stat="session_p4_pct">17.8</span>%
  RTK rewrites:                    <span data-stat="session_rtk_tokens">2,749</span> tokens  <span data-stat="session_rtk_pct">31.5</span>%
  Lean-ctx wraps:                  <span data-stat="session_lean_tokens">1,228</span> tokens  <span data-stat="session_lean_pct">14.1</span>%

Hvernig sparnaður er áætlaður

Hver leiðréttingartegund hefur áætlaðan táknakostnað byggt á því hvað hefði gerst án PRECC:

Þetta eru varfærin áætlanir. Raunverulegur sparnaður er oft meiri vegna þess að rökstuðningur Claude um villur getur verið orðmargur.

Uppsafnaður sparnaður

Sparnaður helst á milli lota í PRECC-gagnagrunninum. Með tímanum geturðu fylgst með heildaráhrifunum:

$ precc savings
Session Token Savings
=====================
Total estimated savings: <span data-stat="session_tokens_saved">8,741</span> tokens

Lifetime savings: <span data-stat="total_tokens_saved">142,389</span> tokens across <span data-stat="total_sessions">47</span> sessions

Status Bar

After installation, PRECC wires a statusLine entry into ~/.claude/settings.json so the Claude Code status bar shows live session metrics:

$0.42 spent | 1.2M in/out | 📊 last cmd: −1.2K | PRECC: 7 fixes | 5.8ms avg | this session: 320 saved over 7 cmds (~$0.05) | lifetime: 8.9K saved over 217 cmds (~$2.85)

Each segment:

The lifetime: segment is placed last so it’s the first to be truncated if Claude Code’s UI clips the bar at the right edge.

Why cost and token count don’t divide

The displayed 1.2M in/out is not the denominator that produced $0.42 spent. Claude Code’s cost.total_cost_usd is computed from the API’s full token breakdown — base input, output, plus cache reads and cache creations. The session-wide cumulative cache token counts are not exposed in the statusline schema, so PRECC can only show the visible (non-cache) portion.

On long sessions with heavy file rereads, cache reads can be 10× the visible token count. That’s why pairing the two as a ratio would mislead — PRECC shows them as independent segments instead.

Why PRECC doesn’t compute the cost

The cost number is authoritative. PRECC reads cost.total_cost_usd verbatim from the JSON Claude Code pipes into the status command on stdin. That’s the same number Claude Code charges against your subscription/usage budget. You can verify it any time with the built-in /cost slash command — both should agree.

What drives the cost

For Claude Opus 4.6:

The biggest drivers on long sessions are usually:

1. Output tokens — most expensive per-token type, especially on the 1M context tier
2. Repeated cache reads — cheap individually but accumulate fast across many turns
3. Cache creations — written once per file read, ~1.25× the base input rate

PRECC reduces the visible-token cost by compressing Bash output (the 📊 last cmd: segment shows the per-command saving), but it cannot reduce cache reads of files Claude has already loaded.

Stable session counts

The “PRECC: N fixes” segment counts events since the persisted session start, written to ~/.local/share/precc/sessions/<session_id>.start on the first statusline refresh of each session. This makes the count monotonic — it cannot drop mid-session even if cost.total_duration_ms is missing on a particular refresh (which would otherwise collapse the window to “since now” and silently drop nearly all events).

Auto-refreshed lifetime snapshot

The lifetime: segment reads ~/.local/share/precc/.lifetime_summary.json, which is rewritten:

• On every PostToolUse measurement (so it stays current as commands accumulate)
• On every precc savings invocation

The this session: segment reads the same lifetime file but subtracts a per-session baseline persisted to ~/.local/share/precc/sessions/<session_id>.savings_baseline on the first refresh of each session.

No need to manually refresh anything — the files update themselves.

Suppressing the status bar

If you’d rather keep your existing status bar, set your own statusLine command in ~/.claude/settings.json. PRECC’s installer will detect the custom value and leave it alone on subsequent updates.

To suppress only the per-interaction 📊 PRECC line (in additionalContext), set PRECC_QUIET=1 in your shell environment.

Þjöppun

precc compress minnkar CLAUDE.md og aðrar samhengsskrár til að draga úr táknanotkuninni þegar Claude Code hleður þeim. Þetta er Pro-eiginleiki.

Grunnnotkun

$ precc compress .
[precc] Scanning directory: .
[precc] Found 3 context files:
         CLAUDE.md (2,847 tokens -> 1,203 tokens, -57.7%)
         ARCHITECTURE.md (4,112 tokens -> 2,044 tokens, -50.3%)
         ALTERNATIVES.md (3,891 tokens -> 1,967 tokens, -49.5%)
[precc] Total: 10,850 tokens -> 5,214 tokens (-51.9%)
[precc] Files compressed. Use --revert to restore originals.

Prufukeyrsla

Forskoða hvað myndi breytast án þess að breyta skrám:

$ precc compress . --dry-run
[precc] Dry run -- no files will be modified.
[precc] CLAUDE.md: 2,847 tokens -> 1,203 tokens (-57.7%)
[precc] ARCHITECTURE.md: 4,112 tokens -> 2,044 tokens (-50.3%)
[precc] ALTERNATIVES.md: 3,891 tokens -> 1,967 tokens (-49.5%)
[precc] Total: 10,850 tokens -> 5,214 tokens (-51.9%)

Endurheimt

Upprunaleg afrit eru vistuð sjálfkrafa. Til að endurheimta:

$ precc compress --revert
[precc] Restored 3 files from backups.

Hvað er þjappað

Þjappari beitir nokkrum umbreytingum:

• Fjarlægir óþarfa bilstafi og tómar línur
• Styttir orðmarga framsetningu en varðveitir merkingu
• Þéttir töflur og lista
• Fjarlægir athugasemdir og skreytilega sniðun
• Varðveitir alla kóðaflokka, slóðir og tæknilega auðkenna

Þjappaða úttakið er enn mannlæsilegt – það er ekki smættað né þokukennt.

Ákveðnar skrár

$ precc compress CLAUDE.md
[precc] CLAUDE.md: 2,847 tokens -> 1,203 tokens (-57.7%)

Skýrslur

precc report býr til greiningaborð sem tekur saman PRECC-virkni og táknasparnað.

Búa til skýrslu

$ precc report
PRECC Report -- 2026-04-03
==========================

Sessions analyzed: 12
Commands intercepted: 87
Total token savings: 42,389

Top skills by activation:
  1. cargo-wrong-dir     34 activations   17,204 tokens saved
  2. npm-wrong-dir       18 activations    9,360 tokens saved
  3. git-wrong-dir       12 activations    4,944 tokens saved
  4. RTK rewrite         15 activations    3,750 tokens saved
  5. python-wrong-dir     8 activations    4,131 tokens saved

Savings by pillar:
  Pillar 1 (context resolution):  28,639 tokens  67.6%
  Pillar 4 (automation skills):    7,000 tokens  16.5%
  RTK rewrites:                    3,750 tokens   8.8%
  Lean-ctx wraps:                  3,000 tokens   7.1%

Recent corrections:
  2026-04-03 09:12  cargo build -> cd myapp && cargo build
  2026-04-03 09:18  npm test -> cd frontend && npm test
  2026-04-03 10:05  git status -> cd repo && git status
  ...

Sending skýrslu með tölvupósti

Sendu skýrsluna á netfang (krefst póstuppsetningar, sjá Email):

$ precc report --email
[precc] Report sent to you@example.com

Viðtakanetfangið er lesið úr ~/.config/precc/mail.toml. Þú getur líka notað precc mail report EMAIL til að senda á ákveðið netfang.

Skýrslugögn

Skýrslur eru búnar til úr staðbundna PRECC-gagnagrunninum í ~/.local/share/precc/history.db. Engin gögn fara frá tölvunni þinni nema þú sendir skýrsluna sérstaklega með tölvupósti.

Greining

PRECC greinir lotunarskrár Claude Code til að læra villu-lagfæringar mynstur. Þegar það sér sömu villu aftur beitir það lagfæringunni sjálfkrafa.

Innlesning lotunarskráa

Lesa inn staka skrá

$ precc ingest ~/.claude/logs/session-2026-04-03.jsonl
[precc] Parsing session-2026-04-03.jsonl...
[precc] Found 142 commands, 8 failure-fix pairs
[precc] Stored 8 patterns in history.db
[precc] 2 new skill candidates identified

Lesa inn alla loga

$ precc ingest --all
[precc] Scanning ~/.claude/logs/...
[precc] Found 23 session files (14 new, 9 already ingested)
[precc] Parsing 14 new files...
[precc] Found 47 failure-fix pairs across 14 sessions
[precc] Stored 47 patterns in history.db
[precc] 5 new skill candidates identified

Þvinguð endurinnlesning

Til að endurvinna skrár sem þegar voru lesnar inn:

$ precc ingest --all --force
[precc] Re-ingesting all 23 session files...

Hvernig greining virkar

1. PRECC les JSONL-lotuskrána.
2. Það auðkennir skipanapar þar sem fyrri skipun mistókst og sú seinni var leiðrétt endurtilraun.
3. Það dregur út mynstur (hvað fór úrskeiðis) og lagfæringuna (hvað Claude gerði öðruvísi).
4. Mynstur eru geymd í ~/.local/share/precc/history.db.
5. Þegar mynstur nær trúverðugleikaþröskuldi (séð margsinnis), verður það lærð þekking í heuristics.db.

Dæmi um mynstur

Failure: pytest tests/test_auth.py
Error:   ModuleNotFoundError: No module named 'myapp'
Fix:     cd /home/user/myapp && pytest tests/test_auth.py
Pattern: pytest outside project root -> prepend cd

precc-learner þjónninn

precc-learner þjónninn keyrir í bakgrunni og fylgist sjálfkrafa með nýjum lotunarskrám:

$ precc-learner &
[precc-learner] Watching ~/.claude/logs/ for new sessions...
[precc-learner] Processing session-2026-04-03-1412.jsonl... 3 new patterns

Þjónninn notar tilkynningar skráarkerfis (inotify á Linux, FSEvents á macOS) svo hann bregst strax við þegar lota endar.

Frá mynstri til þekkingar

Lærð mynstur eru færð upp í þekkingu þegar þau uppfylla þessi skilyrði:

• Séð að minnsta kosti 3 sinnum á milli lota
• Stöðugt lagfæringarmynstur (sama tegund leiðréttingar í hvert skipti)
• Engar rangar jákvæðar uppgötvanir

Þú getur skoðað þekkingarframbjóðendur með:

$ precc skills advise

Sjá Skills fyrir nánari upplýsingar um stjórnun þekkingar.

Gagnageymsla

• Villu-lagfæringar pör: ~/.local/share/precc/history.db
• Uppfærð þekking: ~/.local/share/precc/heuristics.db

Báðir eru SQLite-gagnagrunnar í WAL-ham fyrir öruggan samhliða aðgang.

Tölvupóstur

PRECC getur sent skýrslur og skrár með tölvupósti. Þetta krefst stakrar SMTP-uppsetningar.

Uppsetning

$ precc mail setup
SMTP host: smtp.gmail.com
SMTP port [587]: 587
Username: you@gmail.com
Password: ********
From address [you@gmail.com]: you@gmail.com
[precc] Mail configuration saved to ~/.config/precc/mail.toml
[precc] Sending test email to you@gmail.com...
[precc] Test email sent successfully.

Stillingarskrá

Stillingarnar eru geymdar í ~/.config/precc/mail.toml:

[smtp]
host = "smtp.gmail.com"
port = 587
username = "you@gmail.com"
password = "app-password-here"
from = "you@gmail.com"
tls = true

Þú getur breytt þessari skrá beint:

$EDITOR ~/.config/precc/mail.toml

Fyrir Gmail, notaðu forritasamband frekar en lykilorð reikningsins.

Sending skýrslna

$ precc mail report team@example.com
[precc] Generating report...
[precc] Sending to team@example.com...
[precc] Report sent.

Sending skráa

$ precc mail send colleague@example.com output.log
[precc] Sending output.log to colleague@example.com...
[precc] Sent (14.2 KB).

SSH-miðlunarstuðningur

Ef tölvan þín nær ekki til SMTP-þjóns beint (t.d. á bak við eldvegg fyrirtækis), styður PRECC áframsendingu í gegnum SSH-göng:

[smtp]
host = "localhost"
port = 2525

[ssh_relay]
host = "relay.example.com"
user = "you"
remote_port = 587
local_port = 2525

PRECC mun setja upp SSH-göng sjálfkrafa fyrir sendingu.

GIF-upptaka

precc gif býr til hreyfimynda-GIF upptökur af skjástöðvalotum úr bash-skriftum. Þetta er Pro-eiginleiki.

Grunnnotkun

$ precc gif script.sh 30s
[precc] Recording script.sh (max 30s)...
[precc] Running: echo "Hello, world!"
[precc] Running: cargo build --release
[precc] Running: cargo test
[precc] Recording complete.
[precc] Output: script.gif (1.2 MB, 24s)

Fyrsta viðfangið er bash-skrift með skipunum til að keyra. Annað viðfangið er hámarkslengd upptöku.

Skriftasnið

Skriftan er venjuleg bash-skrá:

#!/bin/bash
echo "Building project..."
cargo build --release
echo "Running tests..."
cargo test
echo "Done!"

Inntaksherming

Fyrir gagnvirkar skipanir, gefðu inntaksgildi sem viðbótarviðföng:

$ precc gif interactive-demo.sh 60s "yes" "my-project" "3"

Hvert viðbótarviðfang er gefið sem stdin-lína þegar skriftan biður um innslátt.

Úttaksvalkostir

Úttaksskráin er sjálfgefið nefnd eftir skriftinni (script.gif). GIF notar dökkt skjástöðvuþema með stöðluðum 80x24 stærðum.

Hvers vegna GIF í stað asciinema?

Innbyggða asciinema-gif þekkingin endurskrifar sjálfkrafa asciinema rec í precc gif. GIF-skrár eru flytjanlegri – þær birtast beint í GitHub READMEs, Slack og tölvupósti án þess að þurfa spilara.

GitHub Actions greining

precc gha greinir misheppnaðar GitHub Actions keyrslur og stingur upp á lagfæringum. Þetta er Pro-eiginleiki.

Notkun

Gefðu URL misheppnaðrar GitHub Actions keyrslu:

$ precc gha https://github.com/myorg/myrepo/actions/runs/12345678
[precc] Fetching run 12345678...
[precc] Run: CI / build (ubuntu-latest)
[precc] Status: failure
[precc] Failed step: Run cargo test

[precc] Log analysis:
  Error: test result: FAILED. 2 passed; 1 failed
  Failed test: tests::integration::test_database_connection
  Cause: thread 'tests::integration::test_database_connection' panicked at
         'called Result::unwrap() on an Err value: Connection refused'

[precc] Suggested fix:
  The test requires a database connection but the CI environment does not
  start a database service. Add a services block to your workflow:

    services:
      postgres:
        image: postgres:15
        ports:
          - 5432:5432
        env:
          POSTGRES_PASSWORD: test

Hvað það gerir

1. Þáttar GitHub Actions keyrslu-URL til að draga út eiganda, repo og keyrslu-ID.
2. Sækir keyrslulogs gegnum GitHub API (notar GITHUB_TOKEN ef stillt, annars opinn aðgangur).
3. Auðkennir misheppnaða skrefið og dregur út viðeigandi villulínur.
4. Greinir villuna og stingur upp á lagfæringu byggt á algengum CI-villumunstur.

Studd villumunstur

• Vantar þjónustugáma (gagnagrunna, Redis o.fl.)
• Rangt keyrslu-OS eða arkitektúr
• Vantar umhverfisbreytur eða leyndarmál
• Bilun í uppsetningu háða pakka
• Tímamörk prófana
• Heimildavillur
• Skyndiminnis-missi sem veldur hægum smíðum

Landsvæðaeftirlit

PRECC inniheldur IP-landsvæðasamræmisathugun fyrir stýrð umhverfi. Þetta er Pro-eiginleiki.

Yfirlit

Sumar stofnanir krefjast þess að þróunartól virki aðeins innan viðurkenndra landfræðilegra svæða. Landsvæðaeiginleiki PRECC staðfestir að IP-tala núverandi tölvu falli innan leyfðs svæðalista.

Samræmisathugun

$ precc geofence check
[precc] Current IP: 203.0.113.42
[precc] Region: US-East (Virginia)
[precc] Status: COMPLIANT
[precc] Policy: us-east-1, us-west-2, eu-west-1

Ef tölvan er utan leyfilegra svæða:

$ precc geofence check
[precc] Current IP: 198.51.100.7
[precc] Region: AP-Southeast (Singapore)
[precc] Status: NON-COMPLIANT
[precc] Policy: us-east-1, us-west-2, eu-west-1
[precc] Warning: Current region is not in the allowed list.

Endurnýjun landsvæðagagna

$ precc geofence refresh
[precc] Fetching updated IP geolocation data...
[precc] Updated. Cache expires in 24h.

Skoðun landsvæðaupplýsinga

$ precc geofence info
Geofence Configuration
======================
Policy file:    ~/.config/precc/geofence.toml
Allowed regions: us-east-1, us-west-2, eu-west-1
Cache age:      2h 14m
Last check:     2026-04-03 09:12:00 UTC
Status:         COMPLIANT

Hreinsun skyndiminnis

$ precc geofence clear
[precc] Geofence cache cleared.

Stillingar

Landsvæðastefnan er skilgreind í ~/.config/precc/geofence.toml:

[geofence]
allowed_regions = ["us-east-1", "us-west-2", "eu-west-1"]
check_on_init = true
block_on_violation = false

Stilltu block_on_violation = true til að koma í veg fyrir að PRECC starfi utan leyfilegra svæða.

Fjarmæling

PRECC styður opt-in nafnlausa fjarmælingu til að bæta tólið. Engin gögn eru safnað nema þú samþykkir sérstaklega.

Skráning

$ precc telemetry consent
[precc] Telemetry enabled. Thank you for helping improve PRECC.
[precc] You can revoke consent at any time with: precc telemetry revoke

Afskráning

$ precc telemetry revoke
[precc] Telemetry disabled. No further data will be sent.

Stöðuathugun

$ precc telemetry status
Telemetry: disabled
Last sent: never

Forskoðun gagna sem yrðu send

Áður en þú skráir þig geturðu séð nákvæmlega hvaða gögn yrðu safnað:

$ precc telemetry preview
Telemetry payload (this session):
{
  "version": "0.3.0",
  "os": "linux",
  "arch": "x86_64",
  "skills_activated": 12,
  "commands_intercepted": 87,
  "pillars_used": [1, 4],
  "avg_hook_latency_ms": 2.3,
  "session_count": 1
}

Hvað er safnað

• PRECC útgáfa, stýrikerfi og arkitektúr
• Samanlögð teljari: fangaðar skipanir, virkjuð þekking, notaðir stoðar
• Meðal hook-leynd
• Lotufjöldi

Hvað er EKKI safnað

• Enginn skipunatexti eða viðföng
• Engar skráarslóðir eða möppuheiti
• Engin verkefnaheiti eða geymslu-URL
• Engar persónugreinanlegar upplýsingar (PII)
• Engin IP-tölur (þjónninn skráir þær ekki)

Umhverfisbreyta-yfirstjórnun

Til að slökkva á fjarmælingu án þess að keyra skipun (gagnlegt í CI eða samnýttum umhverfum):

export PRECC_NO_TELEMETRY=1

Þetta hefur forgang yfir samþykkisstillinguna.

Gagnaafsetur

Fjarmælingargögn eru send á https://telemetry.peria.ai/v1/precc yfir HTTPS. Gögnin eru einungis notuð til að skilja notkunarmynstur og forgangsraða þróun.

Mindmap

This page is auto-generated from mindmap.db — a SQLite snapshot of all recorded PRECC development sessions and git commits. Every row traces back to its source (commit:<sha>, session:<id>, or doc:<path>).

Overview

• Sessions analyzed: 22
• Messages: 14023
• Tool invocations: 5072
• Commits: 205
• Time range: 2026-03-20T07:04:14.787Z → 2026-04-19T11:50:10.153Z
• Effort (tokens):
  • input: 27928
  • output: 2750669
  • cache writes: 43349705
  • cache reads: 1936351239

Features

Dependencies (precc-core modules)

• advisor → db, promote, skills
• diet → lean_ctx
• metrics → db
• mining → skills
• mode_selector → db, mode
• multi_probe → diet, lean_ctx, mode, nushell, post_observe, rtk
• nushell → lean_ctx, mining, rtk
• promote → db, skills
• rtk → lean_ctx
• sharing → db, license, skills
• skill_advisor → mining, nushell
• skills → db
• telemetry → db, license, mining

Plans & Tasks

Plans (prompts requesting design/architecture)

• [proposed] indeed the measurement needs to be based on precc-cc’s established KPI’s. If the two ideas are so close, perhaps you can draft a plan to integrate them (algorithmatically) step-by-step, then start to use Rust (consistent with Precc) to impl… — session:905ff169 (2026-04-18)
• [proposed] 西班牙语网站上有人评价：中文翻譯（繁體）： — session:781fe484 (2026-04-16)
• [proposed] That’s a really solid framing — using pre-tool-call hooks as quality gates instead of just optimization is a big shift in mindset. You’re essentially moving from “make the model cheaper” to “make the system more correct,” whic… — session:ebd81938 (2026-04-05)
• [proposed] Plan the integration of both tools, make sure we don’t take their credit and maintain a clear interface so that once it evolves, we can get smaller changes to integrate with their future changes — session:43541885 (2026-03-31)
• [proposed] for the benchmark, we need to prepare a table to record the comparison for existing historical scenarios, as a “what-if” analysis because there is no way to measure the results for future usages. For this requirement, plan out a step-by-ste… — session:5761d7ca (2026-03-27)
• [proposed] while bash could be improved using RTK, would its replacement with nushell a better choice for Claude Code? If so, plan an option for replacing bash with nushell to gain better accuracy and hence potentially more token savings by some small… — session:5761d7ca (2026-03-27)

Tasks (TaskCreate / TodoWrite entries)

• completed: 89
• in_progress: 3
• deleted: 2

Most recent 30 tasks:

• [completed] Re-ingest and review residual pending — Run precc mindmap build after the fix, then classify the actually-pending tasks (done-but-unclosed vs genuinely-unfinished). — session:0925455d (2026-04-19)
• [completed] Fold TaskCreate/TaskUpdate + dedupe TodoWrite — Replay TaskCreate/TaskUpdate events per (session_id, taskId) to derive final status. For TodoWrite, keep only the last call per session. — session:0925455d (2026-04-19)
• [completed] Run ingest and produce MINDMAP.md — Execute ingest on local sessions + git, then render output to docs/MINDMAP.md. — session:0925455d (2026-04-19)
• [completed] Wire precc mindmap CLI subcommand — Add ingest/render subcommands to precc-cli. — session:0925455d (2026-04-19)
• [completed] Write mindmap render module — Query DB and render nested markdown mindmap with KPIs, features, plans, blockers. — session:0925455d (2026-04-19)
• [completed] Write mindmap ingest module — Parse JSONL sessions + git log, extract messages/tokens/commands/decisions into SQLite. — session:0925455d (2026-04-19)
• [completed] Design SQLite mindmap schema — Tables: sessions, messages, commands, features, plans, tasks, kpis, decisions, dependencies. Every row traces to source (session_id+uuid or commit sha). — session:0925455d (2026-04-19)
• [in_progress] Step 4: HeaderSlicePass + kernel corpus — Shallow-clone Linux kernel, adapt filter for kernel conventions (Fixes: tag, selftests/ and kunit test-surface detection, .c/.h classification). Measure how many recent fix commits ship with a test an… — session:905ff169 (2026-04-19)
• [completed] Step 6: concurrency extraction — Add Pipeline::run_parallel_applies that parallelizes applies() via std::thread::scope when pass count ≥ threshold. Falls back to serial below threshold (thread-spawn overhead > savings). Benchmark s… — session:905ff169 (2026-04-19)
• [completed] [parallel] AST-aware #[test] extractor — Use syn (Rust) or tree-sitter-rust (Python) to detect added #[test] fns in a commit diff and emit a test-only patch. Gates fail→pass verification on this repo. Not blocking; parallel work for the Ru… — session:905ff169 (2026-04-19)
• [completed] Step 7: precc skvm report tooling — Wire had_solid_hit into metrics log. Add precc skvm report that surfaces pass activation counts, cache hit rate, hook-latency percentiles. Read from metrics.db + skvm_solid_cache. Closes the observa… — session:905ff169 (2026-04-19)
• [completed] Wire SolidificationPass into live hook — Add stage_solidification_lookup (front, short-circuits on hit) and stage_solidification_record (end) to Pipeline. Gate behind PRECC_SOLIDIFY. Add had_solid_hit flag. Open cache via db::open_metrics fo… — session:905ff169 (2026-04-19)
• [completed] Step 3: solidification cache — skvm::solid module: Cache (SQLite-backed) with lookup/record, Key with normalization, SolidificationPass at pipeline front. Gated by PRECC_SOLIDIFY=1. Tests with in-memory DB. No wiring into live hook… — session:905ff169 (2026-04-19)
• [completed] Wire CdPrependPass into hook’s stage_context — Replace the direct context::resolve/apply calls in precc-hook::Pipeline::stage_context with CdPrependPass via HookIR. Verify no hook tests regress; full cargo test green. — session:905ff169 (2026-04-19)
• [completed] Step 2: migrate cd_prepend through Pass trait — Re-express the existing cd-prepend stage as a Pass impl that reuses the current context resolution. Diff-test: on a fixture corpus, the new pass must produce byte-identical output to the legacy path. … — session:905ff169 (2026-04-19)
• [completed] Step 5 preview: CrateSlicePass sketch — Implement CrateSlicePass in precc-core::skvm::passes::crate_slice. Detects cargo <build\|test\|check\|clippy> without -p, reads cached cargo metadata, narrows to -p when unambiguous. Wire a minimal K… — session:905ff169 (2026-04-19)
• [completed] Step 1: Pass trait + HookIR — precc-core::skvm::{pass, ir}. Pass trait with name/capability/applies/run. HookIR holds command, cwd, and mutable output. Capability enum: Detect|Rewrite|Slice|Verify. No behavior change; no passes re… — session:905ff169 (2026-04-19)
• [completed] Step 0: baseline harness — Add precc-core::skvm::baseline module + precc report --skvm-baseline subcommand. Snapshots K1 (hook latency p50/p99), K3 (token savings total), activation counts from metrics.db into a named baselin… — session:905ff169 (2026-04-19)
• [completed] Build K3-only replay corpus — For each of the 82 fix-surface commits, derive ground-truth set of changed crates and emit realistic cargo commands. CrateSlicePass evaluation will read this corpus and measure narrowing precision/rec… — session:905ff169 (2026-04-18)
• [deleted] Run verifier over 33 candidates — Execute verifier, collect verdicts. Apply size gate to verified set. Emit precc_self_corpus.jsonl. — session:905ff169 (2026-04-18)
• [deleted] Write fail-at-parent verifier — Per candidate: git worktree at parent, apply only test-file diff, cargo test (expect added tests FAIL), reset + apply full commit, cargo test (expect PASS). Per-worktree CARGO_TARGET_DIR to avoid tras… — session:905ff169 (2026-04-18)
• [completed] Classify test surface of 33 candidates — Split candidates into pure_test_path (tests/ only) vs mixed_file_test (production + #[test] in same file). Reports count by class. Cheap, no cargo. — session:905ff169 (2026-04-18)
• [completed] Run first Terminal-bench batch (5 tasks) — Execute scripts/benchmark.sh –tasks 5 using OAuth token from subscription as ANTHROPIC_API_KEY. Verify arm A (vanilla) works, then arm B (PRECC), then compare.json. — session:781fe484 (2026-04-17)
• [completed] Add precc explain and precc undo — explain –since 1h: lists recent rewrites with diff + skill + confidence (reads stash + rewrite_log). undo <id>: re-disables the skill that produced rewrite id. — session:781fe484 (2026-04-16)
• [completed] Confidence decay on retry-after-rewrite — post_observe: if same command class is retried within 60s after a PRECC rewrite, decrement skill confidence by 0.05 (or count as false-correction event). Below SUGGEST_THRESHOLD (0.3) skill auto-disab… — session:781fe484 (2026-04-16)
• [completed] Add precc skills disable/enable per-project — CLI commands to disable a skill in the current project (writes to .precc/disabled-skills file at project root). Hook reads this list and skips matching skills. — session:781fe484 (2026-04-16)
• [completed] Make every rewrite visible via additionalContext — In precc-hook, whenever the pipeline produces a non-trivial rewrite (cd-prepend, skill, RTK, lean-ctx, nushell, diet), append a one-line summary “PRECC rewrote: <orig> -> <new> [reason]” to additional… — session:781fe484 (2026-04-16)
• [completed] Soften overstated claims in intro — Replace “Claude never sees the error. No tokens wasted.” with measured language matching README. Update strings_intro.sql and re-translate the new key for all 28 langs. — session:781fe484 (2026-04-16)
• [completed] Fix per-language html lang and dir — build-book.sh must rewrite book.toml language= and text-direction= per language so generated pages have correct lang/dir attributes. RTL for ar, fa. — session:781fe484 (2026-04-16)
• [completed] Rebuild book and verify — Run scripts/build-book.sh to regenerate introduction.md per language, verify first lines now show translations — session:781fe484 (2026-04-16)

Blockers (user-reported failure/stuck signals)

• look at all the historical session logs and executed commands to summarize a mark down document like Mindmap showing (1) the features, status, decisions, dependencies, and effort (tokens releated to its development); (2) the plans, tasks, s… — session:0925455d (2026-04-19)
• check if it is working? why precc savings –all doesn’t work? — session:ebd81938 (2026-04-13)
• i tried that url it doesn’t work? — session:ebd81938 (2026-04-08)
• why I can’t see the “last: “ messages? — session:ebd81938 (2026-04-08)
• not yet. I would wait to get more data from telemetry to update the website. But now you need to investigate on those “unmeasured” cases, why we cannot measure them? — session:ebd81938 (2026-04-07)
• regarding the live usage statistics https://precc.cc/en/#live-usage-statistics, we need to report the percentages based on the duration of releases, i.e., how much saving was made by which release (otherwise it is easy to mislead readers to… — session:ebd81938 (2026-04-06)
• https://precc.cc cannot find the server — session:ebd81938 (2026-04-05)
• can see key_id mk_1TDiUmFxhHEidPnDw5esdOMa, but cannot reveal or see the sk_live_… — session:d65ad15f (2026-04-01)
• PS C:\Users\y00577373> iwr -useb https://raw.githubusercontent.com/peria-ai/precc-cc/main/scripts/install.ps1 | iex — session:10175339 (2026-03-30)
• why can’t you create peria-ai or peri-a-i organizations — session:10175339 (2026-03-28)
• the hello_world_do example has the following errors: NPU run failed. — session:3b5e2947 (2026-03-22)

Decisions & Rationale

• feat(bench): clean-subset metrics (exclude timeouts & infra failures) — When one arm times out or the agent fails to install, the resulting tokens/pass numbers aren’t measuring PRECC — they’re measuring tb’s source: commit:5bdd027d (commit 2026-04-17)
• fix(bench): drop –include-hook-events (causes 401 Invalid API key) — Adding --include-hook-events to the tb agent command caused Claude Code to return api_error_status=401 on first turn, even though the source: commit:025995d9 (commit 2026-04-17)
• feat: PRECC_MODE=benchmark toggle + pairwise benchmark harness — Problem (from reviewer): the “trivial vs semantic” error-shaping claim is rhetoric without a measurable boundary. A rewriter that saves tokens source: commit:50c5a30f (commit 2026-04-17)
• docs: update savings.md.tpl + README to match new statusline labels — - Σ → meas: throughout - New ‘bash X% of total’ segment row in segment table source: commit:2d366031 (commit 2026-04-08)
• feat: clearer statusline labels — meas:, drop confusing %, add bash share — Three statusline UX changes from user feedback: 1. Lifetime segment renamed from ‘Σ 8.9K (22% over 217)’ to source: commit:4cd837b7 (commit 2026-04-08)
• docs: explain statusline cost vs token semantics in book + README — Adds a ‘Status Bar’ section to docs/book/templates/savings.md.tpl and README.md explaining: source: commit:6028b64c (commit 2026-04-08)
• feat: v0.3.3 — companion tools default-on, install-script clarity — The single biggest change: install.sh now installs companion tools (lean-ctx, RTK, nushell, cocoindex-code) BY DEFAULT instead of source: commit:48fca046 (commit 2026-04-07)
• feat: quote-aware chain split + sysadmin tool whitelist (54.2% → 55.5%) — Three improvements that increase measurable Bash invocation coverage: 1. Quote-aware top-level chain split source: commit:f6580598 (commit 2026-04-07)
• fix: command_class env stripping, skill validation, ssh/journalctl/kubectl diet rules — 1. command_class strips env prefixes and noise: - RUST_BACKTRACE=1 cargo test → “cargo test” source: commit:f4220343 (commit 2026-04-07)
• feat: multi-mode adaptive compression with failure learning — New modules: - mode.rs: CompressionMode enum (basic/diet/nushell/lean-ctx/rtk/adaptive-expand) source: commit:81475afc (commit 2026-04-07)
• test: comprehensive tests for ccc and compress modules (319 → 386 tests) — ccc.rs: +20 tests covering edge cases for is_eligible (flags, whitespace, empty input), extract_pattern (no path, multiple flags, boundary length), source: commit:448430e2 (commit 2026-03-20)
• feat(gdb): re-enable Pillar 2 GDB hook suggestion — - Add open_history_readonly() to db.rs (same pattern as heuristics) - Add count_recent_failures() to gdb.rs: queries failure_fix_pairs for source: commit:a8428025 (commit 2026-02-26)
• fix(mining): correct summary counters and orphaned events on –force re-mine — Three bugs fixed: 1. mine_session returned Skipped for sessions with no Bash events even source: commit:3ef089d8 (commit 2026-02-22)
• 1. Compiled Rust Binary vs Shell Script — Decision: Replace the rtk-rewrite.sh shell script hook with a compiled Rust binary (precc-hook). Alternatives considered: source: doc:ALTERNATIVES.md
• 2. SQLite vs Key-Value Store — Decision: Use SQLite for both history.db and heuristics.db. Alternatives considered: source: doc:ALTERNATIVES.md
• 3. Workspace of 4 Crates vs Monolith — Decision: Structure the project as a Cargo workspace with 4 crates: precc-core, precc-hook, precc-cli, precc-learner. Alternatives considered: source: doc:ALTERNATIVES.md
• 4. GDB Hook Integration vs Standalone CLI — Decision: Implement GDB debugging as a CLI command (precc debug) rather than as an automatic hook rewrite. Alternatives considered: source: doc:ALTERNATIVES.md
• 5. Background Daemon vs On-Demand Mining — Decision: Support both modes — precc-learner daemon for continuous mining, precc ingest for on-demand. Alternatives considered: source: doc:ALTERNATIVES.md
• 6. Confidence Thresholds — Decision: Three-tier confidence system: auto-apply (≥ 0.7), suggest (0.3-0.7), hidden (< 0.3). Alternatives considered: source: doc:ALTERNATIVES.md
• 7. RTK Subsumption Strategy — Decision: Port RTK’s rewriting logic into precc-core as the final pipeline stage, rather than running both hooks in sequence. Alternatives considered: source: doc:ALTERNATIVES.md
• 8. Skill Storage Format — Decision: TOML files for built-in skills, SQLite rows for mined/user skills. Alternatives considered: source: doc:ALTERNATIVES.md
• 9. Session Log Format — Decision: Read Claude Code’s native JSONL format directly rather than converting to a custom format. Rationale: Claude Code already writes detailed session logs in JSONL format at ~/.claude/projects/*/. Creating a custom format would mean: source: doc:ALTERNATIVES.md

KPIs over time

Effort by session (top 10 by tokens)

Skipanaviðmið

Tæmandi viðmið fyrir allar PRECC-skipanir.

precc init

Ræsa PRECC og skrá hook í Claude Code.

precc init

Options:
  (none)

Effects:
  - Registers PreToolUse:Bash hook with Claude Code
  - Creates ~/.local/share/precc/ data directory
  - Initializes heuristics.db with built-in skills
  - Prompts for telemetry consent

precc ingest

Greina lotunarskrár fyrir villu-lagfæringar mynstur.

precc ingest [FILE] [--all] [--force]

Arguments:
  FILE            Path to a session log file (.jsonl)

Options:
  --all           Ingest all session logs from ~/.claude/logs/
  --force         Re-process files that were already ingested

Examples:
  precc ingest session.jsonl
  precc ingest --all
  precc ingest --all --force

precc skills

Stjórna sjálfvirkniþekkingu.

precc skills list

precc skills list

List all active skills (built-in and mined).

precc skills show

precc skills show NAME

Show detailed information about a specific skill.

Arguments:
  NAME            Skill name (e.g., cargo-wrong-dir)

precc skills export

precc skills export NAME

Export a skill definition as TOML.

Arguments:
  NAME            Skill name

precc skills edit

precc skills edit NAME

Open a skill definition in $EDITOR.

Arguments:
  NAME            Skill name

precc skills advise

precc skills advise

Analyze recent sessions and suggest new skills based on repeated patterns.

precc skills cluster

precc skills cluster

Group similar mined skills to identify redundant or overlapping patterns.

precc report

Búa til greiningarskýrslu.

precc report [--email]

Options:
  --email         Send the report via email (requires mail setup)

precc savings

Sýna táknasparnað.

precc savings [--all]

Options:
  --all           Show detailed per-command breakdown (Pro)

precc compress

Þjappa samhengsskrám til að minnka táknanotkun.

precc compress [DIR] [--dry-run] [--revert]

Arguments:
  DIR             Directory or file to compress (default: current directory)

Options:
  --dry-run       Preview changes without modifying files
  --revert        Restore files from backup

precc license

Stjórna PRECC-leyfinu þínu.

precc license activate

precc license activate KEY --email EMAIL

Arguments:
  KEY             License key (XXXX-XXXX-XXXX-XXXX)

Options:
  --email EMAIL   Email address associated with the license

precc license status

precc license status

Display current license status, plan, and expiration.

precc license deactivate

precc license deactivate

Deactivate the license on this machine.

precc license fingerprint

precc license fingerprint

Display the device fingerprint for this machine.

precc mail

Tölvupóstvirkni.

precc mail setup

precc mail setup

Interactive SMTP configuration. Saves to ~/.config/precc/mail.toml.

precc mail report

precc mail report EMAIL

Send a PRECC analytics report to the specified email address.

Arguments:
  EMAIL           Recipient email address

precc mail send

precc mail send EMAIL FILE

Send a file as an email attachment.

Arguments:
  EMAIL           Recipient email address
  FILE            Path to the file to send

precc update

Uppfæra PRECC í nýjustu útgáfu.

precc update [--force] [--version VERSION] [--auto]

Options:
  --force             Force update even if already on latest
  --version VERSION   Update to a specific version
  --auto              Enable automatic updates

precc telemetry

Stjórna nafnlausri fjarmælingu.

precc telemetry consent

precc telemetry consent

Opt in to anonymous telemetry.

precc telemetry revoke

precc telemetry revoke

Opt out of telemetry. No further data will be sent.

precc telemetry status

precc telemetry status

Show current telemetry consent status.

precc telemetry preview

precc telemetry preview

Display the telemetry payload that would be sent (without sending it).

precc geofence

IP-landsvæðaeftirlit (Pro).

precc geofence check

precc geofence check

Check if the current machine is in an allowed region.

precc geofence refresh

precc geofence refresh

Refresh the IP geolocation cache.

precc geofence clear

precc geofence clear

Clear the geofence cache.

precc geofence info

precc geofence info

Display geofence configuration and current status.

precc gif

Taka upp hreyfimynda-GIF úr bash-skriftum (Pro).

precc gif SCRIPT LENGTH [INPUTS...]

Arguments:
  SCRIPT          Path to a bash script
  LENGTH          Maximum recording duration (e.g., 30s, 2m)
  INPUTS...       Optional input lines for interactive prompts

Examples:
  precc gif demo.sh 30s
  precc gif interactive.sh 60s "yes" "my-project"

precc gha

Greina misheppnaðar GitHub Actions keyrslur (Pro).

precc gha URL

Arguments:
  URL             GitHub Actions run URL

Example:
  precc gha https://github.com/org/repo/actions/runs/12345678

precc cache-hint

Birta upplýsingar um skyndiminnisvísanir fyrir núverandi verkefni.

precc cache-hint

precc trial

Byrja Pro-prufuáskrift.

precc trial EMAIL

Arguments:
  EMAIL           Email address for the trial

precc nushell

Ræsa Nushell-lotu með PRECC-samþættingu.

precc nushell

Algengar spurningar

Er PRECC öruggt í notkun?

Já. PRECC notar opinbera Claude Code PreToolUse hook-kerfi – sama viðbótarstað og Anthropic hannaði einmitt í þessum tilgangi. Hook:

• Keyrir algjörlega ónettengd (engin netköll á skiptu leiðinni)
• Lýkur á undir 5 millisekúndum
• Er fail-open: ef eitthvað fer úrskeiðis keyrir upprunalega skipunin óbreytt
• Breytir aðeins skipunum, keyrir þær aldrei sjálf
• Geymir gögn staðbundið í SQLite-gagnagrunnum

Virkar PRECC með öðrum AI-forritunartólum?

PRECC er hannað sérstaklega fyrir Claude Code. Það byggir á PreToolUse hook samskiptareglum sem Claude Code veitir. Það virkar ekki með Cursor, Copilot, Windsurf eða öðrum AI-forritunartólum.

Hvaða gögn sendir fjarmælingin?

Fjarmæling er aðeins á opt-in grundvelli. Þegar virkjuð sendir hún:

• PRECC útgáfu, stýrikerfi og arkitektúr
• Samanlögð teljari (fangaðar skipanir, virkjuð þekking)
• Meðal hook-leynd

Hún sendir ekki skipunatexta, skráarslóðir, verkefnaheiti eða persónugreinanlegar upplýsingar. Þú getur forskoðað nákvæmlega hvaða gögn væru send með precc telemetry preview áður en þú skráir þig. Sjá Telemetry fyrir frekari upplýsingar.

Hvernig fjarlægi ég PRECC?

??faq_uninstall_a_intro??

1. Fjarlægðu hook-skráninguna:

   # Delete the hook entry from Claude Code's settings
   # (precc init added it; removing it disables PRECC)
   

2. Fjarlægðu keyrsluskrána:

   rm ~/.local/bin/precc ~/.local/bin/precc-hook ~/.local/bin/precc-learner
   

3. Fjarlægðu gögn (valfrjálst):

   rm -rf ~/.local/share/precc/
   rm -rf ~/.config/precc/
   

Leyfið mitt er útrunnið. Hvað gerist?

PRECC snýr aftur í Community-stig. Öll grunnvirkni heldur áfram að virka:

• Innbyggð þekking helst virk
• Hook pipeline keyrir eðlilega
• precc savings sýnir yfirlitsyfirlitið
• precc ingest og lotugreining virka

Pro-eiginleikar verða ekki aðgengilegir þar til þú endurnýjar:

• precc savings --all (ítarleg sundurliðun)
• precc compress
• precc gif
• precc gha
• precc geofence
• Tölvupóstsskýrslur

Hook virðist ekki vera í gangi. Hvernig kemst ég að villunni?

??faq_debug_a_intro??

1. Athugaðu hvort hook sé skráð:

   precc init
   

2. Prófaðu hook handvirkt:

   echo '{"tool_input":{"command":"cargo build"}}' | precc-hook
   

3. Athugaðu hvort keyrsluskráin sé í PATH:

   which precc-hook
   

4. Athugaðu hook-stillingar Claude Code í ~/.claude/settings.json.

Hægir PRECC á Claude Code?

Nei. Hook lýkur á undir 5 millisekúndum (p99). Þetta er ógreinanlegt miðað við þann tíma sem Claude ver í rökhugsun og svaragerð.

Get ég notað PRECC í CI/CD?

PRECC er hannað fyrir gagnvirkar Claude Code lotur. Í CI/CD er engin Claude Code tilvik til að tengja við. Hins vegar getur precc gha greint misheppnaðar GitHub Actions keyrslur úr hvaða umhverfi sem er.

Hvernig er lærð þekking frábrugðin innbyggðri?

Innbyggð þekking fylgir PRECC og nær yfir algeng röng-möppu mynstur. Lærð þekking er unnin úr þínum sérstöku lotuskrám – hún fangar mynstur einstök fyrir þitt verkflæði. Bæði er geymt í SQLite og metið eins af hook pipeline.

Get ég deilt þekkingu með teyminu mínu?

Já. Flyttu út hvaða þekkingu sem er í TOML með precc skills export NAME og deildu skránni. Liðsfélagar geta sett hana í sína skills/ möppu eða flutt inn í eigin þekkingargagnagrunn.

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