collab-proof

collab-proof is a skill for Claude Code, Codex from bestagentkits/agency-skills. It costs 46 tokens per session (3,675 once invoked), scanned A, original, MIT.

A session review that identifies what an AI assistant contributed compared with what the developer decided or completed.

In plain words
What is it for?
Use it to review a coding session, document decisions and work history, and produce an account of the AI’s contribution.
Why use it?
It helps recover collaboration evidence that was not recorded during the work, especially when the session involved decisions, diagnosis, or several file changes.

Skill for Claude CodeCodex

Written for Claude Code and Codex: PreCompact hook event, but also agents/openai.yaml present.

Good fit Use it to review a coding session, document decisions and work history, and produce an account of the AI’s contribution.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/bestagentkits/agency-skills/collab-proof
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 bestagentkits/agency-skills --skill collab-proof
Clone the repo
git clone --depth 1 https://github.com/bestagentkits/agency-skills

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 collab-proof

README.md
[![agentmods](https://agentmods.dev/badge/skills/bestagentkits/agency-skills/collab-proof/github.svg)](https://agentmods.dev/skills/bestagentkits/agency-skills/collab-proof)
Your own site
<a href="https://agentmods.dev/skills/bestagentkits/agency-skills/collab-proof"><img src="https://agentmods.dev/badge/skills/bestagentkits/agency-skills/collab-proof/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 collab-proof

Your own site · 80×15
<a href="https://agentmods.dev/skills/bestagentkits/agency-skills/collab-proof"><img src="https://agentmods.dev/badge/skills/bestagentkits/agency-skills/collab-proof.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 46 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,675 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 $0.00046 $0.03675
Opus 5 $0.00023 $0.01837
Sonnet 5 $0.00009 $0.00735
Haiku 4.5 $0.00005 $0.00367

Measured 9d ago against content hash 9e4e7c0c0ef6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

collab-proof 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.

skills/claude-skills/collab-proof/SKILL.md · 384 lines

How it starts

The opening of the file, as written. The whole thing — 384 lines — stays where its author put it; the contents beside it link to each section on GitHub.

collab-proof

Surfaces AI collaboration evidence the developer didn't consciously record. Vela 3-layer pipeline × ADHD 4-frame reasoning — prompt-native, zero dependencies.


Layer 01 — Signal detection

Run git log --oneline -10 and git diff --stat HEAD~3..HEAD first.

Classify signal level using this rubric (pick the highest that matches):

HIGH → full artifacts (DECISIONS.md + session-history + WORKLOG + HTML)

  • New file created, OR
  • 4+ files modified, OR
  • Explicit option comparison in conversation ("vs", "instead of", "chose X over Y"), OR
  • Design discussion lasted 15+ exchanges, OR
  • Bug with root cause diagnosis — conversation contains WHY the bug happened (not just "fixed X" but "the bug was caused by Y because Z")

BUG_FIXING special rule — override file count: Even if only 1 file changed, classify as HIGH if the conversation contains:

  • Root cause explanation ("the bug was...", "this happened because...", "the issue is...")
  • Diagnosis process ("I checked...", "turned out...", "the problem was...")
  • Fix rationale ("chose this approach because...", "instead of X, used Y because...") File count doesn't matter for bugs — a well-diagnosed single-file fix is more valuable than a 10-file feature with no discussion.

MEDIUM → WORKLOG only

  • 1–3 files modified with no root cause discussion, OR
  • Minor feature added, no tradeoffs discussed

LOW → silence, tell user "Routine session — nothing recorded."

  • No code changes, only planning/discussion, OR
  • Single trivial change with no context ("change this text", "fix typo", "rename variable")

Show the user: Signal: HIGH / MEDIUM / LOW — [one-line reason]


Layer 02 — WorkIntentClassifier

Run all four frames simultaneously against conversation context + git diff. Score each frame 0.0–1.0 using the rubric below. Then apply pruning and classification rules.

Frame scoring rubric

Frame A — Technical (code churn complexity)

  • 1.0 New module/file created, complex logic added (state machine, Lua script, novel algorithm)
  • 0.5 Existing function logic modified, simple API endpoint added
  • 0.1 Typo fix, comment change, plain text edit

Read the full file on GitHub · 384 lines

Files

What ships with it

5 files 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 · 384 lines · 46 tokens per session scan A 9e4e7c0c0ef6

Subscribe to this mod's changes

collab-proof is a skill published in the GitHub repository bestagentkits/agency-skills (12 stars, last pushed 2mo ago), licensed MIT. It adds 46 tokens to every session and 3,675 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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