Borrowing it
Nothing to install: this file belongs to deephaven/deephaven-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/deephaven/deephaven-mcp/main/.agents/skills/run-precommit/SKILL.mdgit clone --depth 1 https://github.com/deephaven/deephaven-mcpWrote 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/deephaven/deephaven-mcp/run-precommit)<a href="https://agentmods.dev/skills/deephaven/deephaven-mcp/run-precommit"><img src="https://agentmods.dev/badge/skills/deephaven/deephaven-mcp/run-precommit/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.
<a href="https://agentmods.dev/skills/deephaven/deephaven-mcp/run-precommit"><img src="https://agentmods.dev/badge/skills/deephaven/deephaven-mcp/run-precommit.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00062 | $0.00381 |
| Opus 5.5 | $0.00025 | $0.00152 |
| Sonnet 5.5 | $0.00012 | $0.00076 |
| Haiku 4.5 | $0.00006 | $0.00038 |
Grade A, and why
run-precommit 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 1mo 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
./bin/precommit.sh
Runs in order: isort → black → ruff → mypy → codespell → markdownlint. It modifies files — isort, black, ruff, and markdownlint all apply fixes in place (codespell only reports; fix manually or run uv run codespell -w and review the diff — its auto-fix can rewrite intentional forms). After a successful run, check for modified files and include them in the commit.
It does not run tests. Use the tests-run skill for that.
The script stops at the first failure (set -euo pipefail), so a failure in ruff means mypy, codespell, and markdownlint have not yet run. isort, black, and markdownlint are unlikely to fail since they auto-fix. Ruff may report unfixable lint errors; mypy reports type errors; codespell reports misspellings and British spellings — all require manual fixes before re-running. The spelling rule and its inline-ignore convention are owned by ref-python-coding-practices rule 8 (markdown delta: ref-markdown-documentation-standards Prose conventions).
Ruff/mypy failures need code edits — apply the review-python-file skill (which loads ref-python-coding-practices, ref-logging-standards, and ref-mcp-module-organization) before fixing, so the fix matches project standards rather than only silencing the linter.
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.
- 1mo ago First seen · 17 lines · 62 tokens per session scan A 2072cea4d8fd
run-precommit is a skill published in the GitHub repository deephaven/deephaven-mcp (5 stars, last pushed 2d ago), licensed Apache-2.0. It adds 62 tokens to every session and 381 once invoked, about $0.0002 per session on Opus 5.5. 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.
Other skills, from other repositories
merge-batch
Prepare and merge an owner-selected PR batch with contributor credit and exact-candidate admission. Use for a pasted PR list; combined focused validation is diagnostic, and every actual landing still requires its applicable checks and authorization.
prowler-commit
Creates professional git commits following conventional-commits format. Trigger: When creating commits, after completing code changes, when user asks to commit.
gh-auth-isolation
Safely manage multiple GitHub identities (EMU + personal) in agent workflows.
comet-github
A routing guide for Comet-related GitHub work. It directs requests about pull requests, issues, CI failures, ideas, and fixes to the appropriate review or implementation process.
github-skill
Work with GitHub via the gh CLI — clone repositories, create/list/merge pull requests, create/list issues, and run any other gh command (API calls, workflow runs, releases, repo administration). List operations return parsed JSON.
release-helper
Ensures configuration and code changes are released correctly. Use PROACTIVELY whenever you edit config.json, change any setting, or fix a configuration bug in this project, so the change reaches production.