evidence-ledger

evidence-ledger is a skill for Claude Code, Codex from s977043/PlanGate. It costs 101 tokens per session (3,152 once invoked), scanned A, original, MIT.

An evidence record for completion claims such as “fixed” or “tests passed.” TDD, or test-driven development, is a practice of first seeing a test fail, then making it pass, and checking it again after cleanup.

In plain words
What is it for?
Use it to record test runs, command results, code changes, reviews, and manual checks before handing work to a completion gate.
Why use it?
It prevents completion claims from relying on guesses by recording commands, exit codes, output, and—when required—the separate TDD stages.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents); mentions Codex.

Good fit Use it to record test runs, command results, code changes, reviews, and manual checks before handing work to a completion gate.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/s977043/plangate/evidence-ledger
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add s977043/PlanGate --skill evidence-ledger
Clone the repo
git clone --depth 1 https://github.com/s977043/PlanGate

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for evidence-ledger

README.md
[![agentmods](https://agentmods.dev/badge/skills/s977043/plangate/evidence-ledger/github.svg)](https://agentmods.dev/skills/s977043/plangate/evidence-ledger)
Your own site
<a href="https://agentmods.dev/skills/s977043/plangate/evidence-ledger"><img src="https://agentmods.dev/badge/skills/s977043/plangate/evidence-ledger/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for evidence-ledger

Your own site · 80×15
<a href="https://agentmods.dev/skills/s977043/plangate/evidence-ledger"><img src="https://agentmods.dev/badge/skills/s977043/plangate/evidence-ledger.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 101 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,152 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00101 $0.03152
Opus 5 $0.00051 $0.01576
Sonnet 5 $0.00020 $0.00630
Haiku 4.5 $0.00010 $0.00315

Measured 9d ago against content hash 9961faa353aa, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

evidence-ledger scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.agents/skills/evidence-ledger/SKILL.md · 270 lines

How it starts

The opening of the file, as written. The whole thing — 270 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Evidence Ledger

完了主張を証拠付きで記録し、EvidenceLedger として出力する。

Iron Law

NO COMPLETION CLAIMS WITHOUT FRESH VERIFICATION EVIDENCE

「should work now」「probably fixed」「テスト通るはず」等の推測的完了宣言は禁止。 コマンド実行結果・終了コード・出力抜粋を証拠として記録せよ。

TDD 必須 mode では、単なる「テストが通った」だけでは不十分。 RED(期待通り失敗)→ GREEN(最小実装で成功)→ REFACTOR VERIFY(整理後も成功) の証跡を分けて記録する。

Common Rationalizations

こう思ったら 現実
「CIが通ったから証拠不要」 CI はカバレッジの保証ではない。claim ごとに証拠を記録せよ
「小さな修正だから証拠不要」 規模は関係ない。exitCode=0 を確認して記録せよ
「レビューしたから大丈夫」 review type の EvidenceItem として記録せよ
「テストが通ったからTDD済み」 GREENだけではTDD証跡にならない。REDの失敗理由も記録せよ
「REDは見たがログは残していない」 high-risk / critical では RED 証跡がなければ Completion Gate で block 対象

データスキーマ

EvidenceStatus

"passed" | "failed" | "skipped" | "unknown"

EvidenceType

"command" | "diff" | "test" | "review" | "manual"

EvidencePhase

phase は任意フィールド。ただし type="test" かつ TDD 証跡として使う場合は必須。

"tdd_red" | "tdd_green" | "refactor_verify" | "verification" | "baseline"
phase 用途 期待する exitCode
baseline 実装前の既存テスト確認 0
tdd_red failing test が期待通り失敗することの確認 != 0
tdd_green 最小実装で対象テストが成功することの確認 0
refactor_verify refactor後も対象テスト・関連検証が成功することの確認 0
verification TDD以外の通常検証 0

tdd_redexitCode != 0 は失敗ではなく、期待されたRED証跡として扱う。ただし、conclusion には「なぜ期待通りの失敗と言えるか」を必ず書く。

EvidenceItem

{
  "id": "string(例: ev-001)",
  "type": "command | diff | test | review | manual",
  "phase": "baseline | tdd_red | tdd_green | refactor_verify | verification(任意。TDD証跡では必須)",
  "command": "string(type=command/test の場合)",
  "exitCode": "number(type=command/test の場合)",
  "outputExcerpt": "string(出力の一部抜粋)",
  "filePath": "string(type=diff/test の場合)",
  "reviewer": "string(type=review の場合)",
  "conclusion": "string(必須 - この証拠から何が言えるか)",
  "createdAt": "string(ISO 8601)"
}

EvidenceLedger

{
  "claim": "string(完了したという主張)",
  "status": "EvidenceStatus",
  "evidence": "EvidenceItem[]",
  "missingEvidence": "string[](必須だが欠けている証拠の説明)"
}

Read the full file on GitHub · 270 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago First seen · 270 lines · 101 tokens per session scan A 9961faa353aa

Subscribe to this mod's changes

evidence-ledger is a skill published in the GitHub repository s977043/PlanGate (2 stars, last pushed today), licensed MIT. It adds 101 tokens to every session and 3,152 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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