forensics-report

forensics-report is a skill for Claude Code, Codex from event4u-app/agent-config. It costs 44 tokens per session (1,209 once invoked), scanned A, original, MIT.

A release-review report based on Git history that identifies files changed often or with high complexity and files that tend to change together. Its findings guide reviewers but do not pass or fail a release.

In plain words
What is it for?
Use it to investigate release hotspots, study change coupling between files, and support a release review with read-only evidence.
Why use it?
It shows where a release may deserve extra human attention and whether actual change patterns match the intended module boundaries.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to investigate release hotspots, study change coupling between files, and support a release review with read-only evidence.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/event4u-app/agent-config/forensics-report
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 event4u-app/agent-config --skill forensics-report
Clone the repo
git clone --depth 1 https://github.com/event4u-app/agent-config

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 forensics-report

README.md
[![agentmods](https://agentmods.dev/badge/skills/event4u-app/agent-config/forensics-report/github.svg)](https://agentmods.dev/skills/event4u-app/agent-config/forensics-report)
Your own site
<a href="https://agentmods.dev/skills/event4u-app/agent-config/forensics-report"><img src="https://agentmods.dev/badge/skills/event4u-app/agent-config/forensics-report/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 forensics-report

Your own site · 80×15
<a href="https://agentmods.dev/skills/event4u-app/agent-config/forensics-report"><img src="https://agentmods.dev/badge/skills/event4u-app/agent-config/forensics-report.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 44 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,209 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 2 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium MCP Rug Pull · line 40
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 52
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
How audits are shown
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 $0.00044 $0.01209
Opus 5 $0.00022 $0.00605
Sonnet 5 $0.00009 $0.00242
Haiku 4.5 $0.00004 $0.00121

Measured 9d ago against content hash 8baa6cb659a2, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

forensics-report 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.

src/skills/forensics-report/SKILL.md · 115 lines

How it starts

The opening of the file, as written. The whole thing — 115 lines — stays where its author put it; the contents beside it link to each section on GitHub.

forensics-report

When to use

  • Before or during a release review, when machine-derived evidence is wanted alongside the human review: "which files are the risk hotspots in this release", "what changes together", "release forensics".
  • When intended module boundaries should be checked against what the git history actually shows (change-coupling across module lines).
  • The output is advisory, never a gate — it points reviewers at places worth attention; it never passes or fails anything.
  • NOT for IT-security incident forensics (route to incident-commander) and NOT for runtime performance hotspots (route to performance-analysis).

Procedure

  1. Pick the range — the previous release tag to HEAD (vPREV..HEAD) or a released pair (vPREV..vNEW). Pin the range explicitly; a floating range breaks determinism.

  2. Run the report:

    npx tsx node_modules/@event4u/agent-config/src/scripts/forensics_report.ts --range vPREV..vNEW --out report.json
    

    Two deterministic, git-log-based analyzers run, read-only and offline:

    • Hotspot risk = normalized change frequency x normalized complexity per file over the range.
    • Change-coupling = co_changes(A,B) / min(changes(A), changes(B)) per file pair.
  3. Optionally feed the release findings ledger: add --findings-out findings.json, then ingest via

    npx tsx node_modules/@event4u/agent-config/src/scripts/check_finding_dispositions.ts --ingest findings.json --release X.Y.Z
    

    which appends to the existing ledger at agents/evidence/release-findings/<version>.json. Emitted findings are kind: correctness with severity: low|medium — non-blocking for the release gate by construction.

  4. Read the results:

    • hotspots[] — a hotspot is a place for reviewer attention, NEVER a quality verdict. A frequently changed complex file can be exactly right as it is; the score says "look here", not "this is bad".
    • coupling[] — file pairs that habitually change together.
    • boundary_contradictions[] — cross-module coupling above the threshold, i.e. a contradiction between intended and actual boundaries. This is a finding CLASS to discuss, not a failure.

Read the full file on GitHub · 115 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 · 115 lines · 44 tokens per session scan A 8baa6cb659a2

Subscribe to this mod's changes

forensics-report is a skill published in the GitHub repository event4u-app/agent-config (10 stars, last pushed today), licensed MIT. It adds 44 tokens to every session and 1,209 once invoked, about $0.0002 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 2026-09-03.

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