vouch-propose-from-pr

A command that reads a merged GitHub pull request and turns its meaningful behaviour changes into proposed, cited facts for the vouch knowledge base. A pull request is a request to add reviewed code changes to a project.

In plain words
What is it for?
It helps document up to five behavioural decisions from a merged pull request, using the merge commit and its code changes as evidence. The resulting claims still require human approval.
Why use it?
It preserves the reasons and rules introduced by accepted code changes instead of letting them disappear into a merge record.

Command for Claude Code

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.

agentmods
npx agentmods add commands/vouchdev/vouch/vouch-propose-from-pr
Clone the repo
git clone --depth 1 https://github.com/vouchdev/vouch

Made for: Claude Code.

Per session 10 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 251 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00010 $0.00251
Opus 5 $0.00005 $0.00125
Sonnet 5 $0.00002 $0.00050
Haiku 4.5 $0.00001 $0.00025

Measured 3d ago against content hash baac97b21b2f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

vouch-propose-from-pr 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 3d 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.

adapters/claude-code/.claude/commands/vouch-propose-from-pr.md · 26 lines

What it actually says

/vouch-propose-from-pr

A PR is a decision: someone proposed a change, the team accepted it. The "why" gets compressed into the merge message and forgotten. This command preserves the why as cited claims in the KB.

Steps:

  1. Parse $ARGUMENTS as a PR URL or <owner>/<repo>#<num>; default to the most-recently-merged PR you authored.
  2. Fetch the PR title, body, and the merged-commit SHA via gh.
  3. Register the merge commit as a kb_register_source so subsequent claims can cite it.
  4. Read the diff. For each behavioural change (not formatting / renaming), draft one kb_propose_claim whose text summarises the new invariant the code now upholds, citing the source from step 3.
  5. Propose at most five claims per PR. If a PR is that big, suggest the contributor split it next time.

Do not auto-approve. The KB's review gate is intentional; this command only fills the queue.

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. 3d ago First seen · 26 lines · 10 tokens per session scan A baac97b21b2f

Subscribe to this mod's changes

vouch-propose-from-pr is a command published in the GitHub repository vouchdev/vouch (91 stars, last pushed 10d ago), licensed MIT. It adds 10 tokens to every session and 251 once invoked, about $0.0001 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 2026-08-30.