chess-uci-mcp: Skill for Claude Code

.claude/skills/releasing/SKILL.md

releasing is a skill for Claude Code from AnglerfishChess/chess-uci-mcp. It costs 104 tokens per session (1,680 once invoked), scanned A, original, MIT.

A release procedure for publishing chess-uci-mcp, an MCP server for communicating with chess engines, to PyPI and the MCP registry. It covers version checks, tests, tagging, and the publishing workflow.

In plain words
What is it for?
Bumping and checking a version, verifying release prerequisites, running meaningful tests, creating a Git tag and GitHub release, and confirming publication.
Why use it?
It helps prevent incomplete or misleading releases, including releases whose tests passed without actually using a chess engine.

Skill for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter. Also seen: positional $N argument.

This is AnglerfishChess/chess-uci-mcp's own configuration. It tells Claude Code how to work on chess-uci-mcp itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything chess-uci-mcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to AnglerfishChess/chess-uci-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.

Copy the file
curl -O https://raw.githubusercontent.com/AnglerfishChess/chess-uci-mcp/main/.claude/skills/releasing/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/AnglerfishChess/chess-uci-mcp

Made for: Claude Code.

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 releasing

README.md
[![agentmods](https://agentmods.dev/badge/skills/anglerfishchess/chess-uci-mcp/releasing/github.svg)](https://agentmods.dev/skills/anglerfishchess/chess-uci-mcp/releasing)
Your own site
<a href="https://agentmods.dev/skills/anglerfishchess/chess-uci-mcp/releasing"><img src="https://agentmods.dev/badge/skills/anglerfishchess/chess-uci-mcp/releasing/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 releasing

Your own site · 80×15
<a href="https://agentmods.dev/skills/anglerfishchess/chess-uci-mcp/releasing"><img src="https://agentmods.dev/badge/skills/anglerfishchess/chess-uci-mcp/releasing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 104 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,680 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00104 $0.01680
Opus 5 $0.00052 $0.00840
Sonnet 5 $0.00021 $0.00336
Haiku 4.5 $0.00010 $0.00168

Measured 11d ago against content hash f2f53663090b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

releasing scanned grade A with 1 finding 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 11d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/sync_version.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

Then confirm PyPI serves it — `curl -s https://pypi.org/pypi/chess-uci-mcp/json` should report `info.version` as
.claude/skills/releasing/SKILL.md · 124 lines

How it starts

The opening of the file, as written. The whole thing — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Release chess-uci-mcp

Release $1 — a bare semver such as 0.2.0, with no leading v, since the tag adds it.

The pipeline is: GitHub release → .github/workflows/publish.yml → PyPI via trusted publisher (OIDC, no tokens anywhere) → the MCP registry, which the same workflow republishes. Everything below is what happens around that trigger. Work through the steps in order and stop at the first failure instead of improvising past it: most of these steps are cheap to retry, and the two that are not — the tag and the release — come last for that reason.

1. Check the preconditions

  • git status -sb — clean tree, on main, in sync with origin/main. Unpushed work either joins the release deliberately or waits; it must not ride along unnoticed.
  • $1 is unreleased: absent from git tag, and from https://pypi.org/pypi/chess-uci-mcp/json.
  • Confirm a UCI engine is on PATH before trusting the tests: command -v stockfish. This matters more here than in most projects, because tests/test_engines.py skips itself at module level when no engine is found — so uv run pytest passes having exercised nothing at all. A green run without that check is not evidence.
  • Then run them: uv run pytest.
  • gh run list --branch main --limit 1 — CI green on HEAD. That job installs Stockfish itself, so it is the run that genuinely drove an engine, on a platform you do not develop on.

2. Bump the version

pyproject.toml holds the version; every other occurrence is a copy. Set version = "$1" there, let the lockfile follow, then propagate it to chess_uci_mcp/__init__.py and to both version fields in server.json:

uv sync --extra=dev
uv run python ${CLAUDE_SKILL_DIR}/scripts/sync_version.py

Keep --extra=dev on that sync. A bare uv sync prunes the extras, quietly uninstalling pytest and ruff — which step 1 just relied on, and which you will want again if anything below sends you back.

Commit it all as one change. The version in the code, in server.json and on the tag has to be a single string: a wheel reporting a version its tag never had is a support puzzle, and a server.json naming a package version PyPI does not serve is rejected by the registry outright.

Read the full file on GitHub · 124 lines

Files

What ships with it

1 file 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. 11d ago First seen · 124 lines · 104 tokens per session scan A f2f53663090b

Subscribe to this mod's changes

releasing is a skill published in the GitHub repository AnglerfishChess/chess-uci-mcp (2 stars, last pushed 6d ago), licensed MIT. It adds 104 tokens to every session and 1,680 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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