Cyanheads Git MCP Server Git MCP Server

Preconditions

This skill runs after git wrapup. By the time it's invoked:

• package.json version is bumped
• server.json version is bumped (top-level + each package entry)
• CHANGELOG.md has a new entry for this version with a concrete date (never [Unreleased])
• README badges and version-bearing files are in sync
• Release commit (chore: release v<version>) exists
• Annotated tag (v<version>) exists locally
• Working tree is clean

If any are missing, halt and tell the user to finish wrapup first. Do not attempt to redo wrapup work from inside this skill.

Failure Protocol

Stop on the first non-zero exit. No retries, no remediation from inside the skill. Report to the user:

1. Which step failed
2. The exact error output
3. Which destinations already received the release (npm published? tag pushed?) so they know the partial state

The user fixes locally and re-invokes, or runs the remaining steps manually. Publishes hard-fail with "version already exists" if replayed — that's the signal the step already succeeded.

Steps

1. Sanity-check wrapup outputs

Read package.json → capture version. Read server.json → verify top-level version matches and every packages[].version matches. Then verify git state:

git status --porcelain                         # must be empty — clean working tree
git describe --exact-match --tags HEAD 2>&1    # must equal v<version>
git rev-parse --abbrev-ref HEAD                # note the branch name

If working tree is dirty, HEAD isn't on v<version>, or server.json versions drift from package.json, halt.

2. Run the verification gate

All three must succeed:

bun run devcheck
bun run rebuild
bun test

Any non-zero exit → halt with the failing command's output.

devcheck runs lint + format + typecheck + bun audit. rebuild is a clean + bun build to catch build-time regressions devcheck alone can miss.

3. Push to origin

git push
git push --tags

If the remote rejects either push, halt. On a fresh branch, git push may need -u origin <branch> — read the error and re-run if that's the only gap.

4. Publish to npm

bun publish --access public

bun publish uses whatever npm auth the user has configured in ~/.npmrc. If 2FA is enabled on the npm account, the command will prompt for an OTP or open a browser — that's expected; the user completes it interactively.

Friction reducers (optional, configure once):

Halt on publish error other than "version already exists" (which means this step already ran).

5. Publish to MCP Registry

bun run publish-mcp

This repo's publish-mcp script is defined in package.json and runs scripts/validate-mcp-publish-schema.ts before invoking mcp-publisher. Reads server.json at the repo root.

Prereqs:

• A GitHub PAT with read:org + read:user scopes, reachable by the publish-mcp script (conventionally stored in Keychain under service mcp-publisher-github-pat on macOS)
• mcp-publisher CLI installed (npm i -g mcp-publisher or brew install mcp-publisher)

If the Keychain entry doesn't exist:

security add-generic-password -a "$USER" -s mcp-publisher-github-pat -w
# paste PAT at the silent prompt

Halt on any publisher error other than "cannot publish duplicate version".

6. Report the deployed artifacts

Print clickable URLs for every destination that succeeded:

• npm: https://www.npmjs.com/package/@cyanheads/git-mcp-server/v/<version>
• MCP Registry: https://registry.modelcontextprotocol.io/v0/servers?search=io.github.cyanheads/git-mcp-server
• GitHub release tag: https://github.com/cyanheads/git-mcp-server/releases/tag/v<version>

Skip any destination that was skipped or failed in its step.

Optional: Create a GitHub Release

The annotated tag is enough for npm/MCP Registry. A GitHub Release adds a human-readable changelog page and optional assets. Skip unless the project publishes releases to GitHub Releases specifically.

gh release create "v<version>" \
  --title "v<version>" \
  --notes-file <(awk "/^## v<version>/,/^## v/" CHANGELOG.md | sed '$d')

The awk expression extracts just the current version's section from CHANGELOG.md.

Checklist

• Working tree clean; HEAD tagged v<version>
• package.json and server.json versions match
• bun run devcheck passes
• bun run rebuild succeeds
• bun test passes
• git push succeeds
• git push --tags succeeds
• bun publish --access public succeeds
• bun run publish-mcp succeeds
• Deployed artifact URLs reported to the user

Source: cyanheads/git-mcp-server — distributed by TomeVault.