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/deephaven/deephaven-mcp/run-precommitnpx skills add deephaven/deephaven-mcp --skill run-precommitgit clone --depth 1 https://github.com/deephaven/deephaven-mcpWhat 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 | $0.00062 | $0.00381 |
| Opus 5 | $0.00031 | $0.00191 |
| Sonnet 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 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
./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.
- 2d 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 4d ago), licensed Apache-2.0. It adds 62 tokens to every session and 381 once invoked, about $0.0003 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 2026-08-31.
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