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.
npx agentmods add skills/7xuanlu/wenlan/provenpx skills add 7xuanlu/wenlan --skill provegit clone --depth 1 https://github.com/7xuanlu/wenlanWrote 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.
[](https://agentmods.dev/skills/7xuanlu/wenlan/prove)<a href="https://agentmods.dev/skills/7xuanlu/wenlan/prove"><img src="https://agentmods.dev/badge/skills/7xuanlu/wenlan/prove.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00074 | $0.00553 |
| Opus 5 | $0.00037 | $0.00277 |
| Sonnet 5 | $0.00015 | $0.00111 |
| Haiku 4.5 | $0.00007 | $0.00055 |
Grade A, and why
prove 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 2d 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.
What it actually says
/prove [surface] — wenlan verification loops
Run every check through the evidence wrapper (records to .claude/attest.jsonl,
which the weekly sweep audits): bash scripts/attest.sh <command>. That wrapper
ships in the repo and runs on macOS, Linux and Windows (Git Bash); the older
~/.claude/bin/attest.sh is a personal copy that does not exist on every
machine, and a missing wrapper means the run is unrecorded, which the sweep
reads as "the smoke never ran". Sandboxed local runs need TMPDIR=/tmp/claude
prefixed (macOS mktemp gotcha).
| Surface | Command | Proves |
|---|---|---|
daemon |
read references/daemon.md |
HTTP behavior on an isolated daemon |
cli |
attest.sh bash scripts/smoke-cli.sh |
shipped CLI black-box round-trip |
mcp |
attest.sh bash scripts/smoke-mcp.sh |
stdio JSON-RPC round-trip |
plugin |
/wenlan:setup verify path |
plugin → MCP → daemon wiring |
suite |
breadth: cargo mutants -f <file> (auto-generated mutants, lib-test oracle); depth: read references/mutprove.md |
tests can actually go red (mutation audit) |
behaviors |
attest.sh python3 scripts/check-behavior-trace.py <plan.md> <tests...> |
tests trace to intent, both directions |
sweep |
read references/sweep.md |
weekly verify-the-verifier |
No argument → pick the surfaces the current diff touches (server/core → daemon;
cli crate → cli; mcp crate → mcp; new/changed tests → behaviors + suite).
App/UI surface (app/, src/, or anything rendered): rendered evidence
required — drive the running app and look at the screen; unit/build green is
not proof of visible correctness.
Live-smoke legs that need the real GPU model (L7) stay manual:
scripts/live-smoke-*.sh — run before merging features whose e2e stubs the LLM.
What ships with it
4 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.
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.
- 2d ago Changed · +4 lines af3a2921a8be
- 6d ago First seen · 30 lines · 74 tokens per session scan A f5ce9c2e9c7f
prove is a skill published in the GitHub repository 7xuanlu/wenlan (63 stars, last pushed today), licensed Apache-2.0. It adds 74 tokens to every session and 553 once invoked, about $0.0004 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.
Other skills, from other repositories
live-preview
Mid-build visual verification loop. Takes screenshots of components during construction, not just after. Catches visual regressions and invisible features before they compound. Requires Playwright or similar screenshot tool.
brooks-sweep
Full-sweep mode: runs a unified analysis across all quality dimensions — code decay, architecture, tech debt, and test quality — then applies fixes directly to the codebase. Safe changes are auto-applied; risky changes are confirmed before execution. Drawing on twelve classic engineering books. Triggers when: user…
api-testing
HTTP API testing for TypeScript (Supertest) and Python (httpx, pytest). Test REST APIs, GraphQL, request/response validation, authentication, and error handling.
bun-test-mocking
Use for mock functions in Bun tests, spyOn, mock.module, implementations, and test doubles.
verify
Verification loop — lint -> typecheck -> unit -> integration -> e2e.
bun-test-coverage
Use for test coverage with Bun, --coverage flag, lcov reports, thresholds, and CI integration.