Release And Publish

Preconditions

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

• Pre-wrapup verification is done (field-test, security-pass, polish-docs-meta as applicable)
• package.json version is bumped
• changelog/<major.minor>.x/<version>.md is authored
• CHANGELOG.md is regenerated
• README and every version-bearing file is in sync
• Release commit (chore(release): <version> — <theme>) is at HEAD
• No tag exists yet — this skill creates it (step 4)
• Working tree is clean
• Release PR mode (see git-wrapup's "Release PR mode"): HEAD is on release/<version>, the branch is pushed, the PR is open, and — in gated mode — the caller has confirmed the review pass is finished. Without that confirmation, halt: this skill never decides on its own that a review is done.

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

Steps 5–9 are network-bound. For those, retry transient failures up to 2 times with short backoff (~5 s before the first retry, ~15 s before the second) before halting. All other steps halt on the first non-zero exit — they're deterministic and a second attempt won't change the outcome.

Retry on transient patterns

Match stderr (case-insensitive) against any of these — if matched, the failure is almost always a network blip; retry:

• integrity check failed / IntegrityCheckFailed — corrupt tarball during download
• ECONNRESET / EAI_AGAIN / ETIMEDOUT / ENOTFOUND — network layer
• connection reset / connection refused — transport blip
• timed out / request timeout — server or network timeout
• HTTP 502 / 503 / 504 — transient registry error

Before retrying docker buildx --push (step 9), run docker builder prune -f to drop any cached corrupt layer. Skip this extra step for other retries.

Never retry on idempotent-success signals

These mean the step already succeeded on a prior run — treat as success and proceed to the next step:

• npm (bun publish): version already exists, You cannot publish over the previously published versions
• MCP Registry (mcp-publisher publish): cannot publish duplicate version
• Tag (git tag -a): already exists with the tag pointing at HEAD — a prior run of this skill already created it; a tag pointing elsewhere is a conflict, not a success (see step 4)
• GitHub Release (gh release create): release already exists — fall back to gh release upload --clobber (see step 8)

Halt fallback

If retries are exhausted, or the failure matches none of the transient patterns, halt and report:

1. Which step failed
2. The exact error output
3. Retry count attempted (0 for terminal errors, 2 for exhausted retries)
4. Which destinations already received the release (npm published? tag pushed? MCP Registry? GitHub Release with .mcpb? GHCR?) — the partial state across destinations

The user fixes locally and re-invokes. On re-invocation, already-published destinations hit the idempotent-success signal and skip naturally — no manual step-skipping required.

Steps

1. Sanity-check wrapup outputs

Read package.json → capture version. Then use your git tools to verify:

• Working tree is clean — no uncommitted changes
• HEAD is the release commit — git log -1 --format=%s starts with chore(release): <version>
• Current branch — main, or release/<version> in release PR mode. Anything else, halt.
• Release PR mode: gh pr view --json number,state,headRefOid shows the PR OPEN with headRefOid equal to local HEAD. A mismatch means the branch has commits the PR doesn't (or the reverse) — halt and report both SHAs. Keep number and headRefOid: the merge check (step 3) and the tag body (step 4) need them after the checkout has moved to main.

If working tree is dirty or HEAD isn't the release commit, halt.

2. Run the verification gate

All must succeed. Check package.json scripts for test:all; if absent, fall back to test:

bun run devcheck
bun run rebuild
bun run test:all        # or `bun run test` if no test:all
bun run test:package    # only if the script exists — NOT part of test:all

test:package is a separate gate wherever a project defines one: it verifies the public-export manifest against what the built subpaths actually export. A release that adds, removes, or renames an export passes test:all and fails here. Regenerate the manifest with the command the failure names rather than editing it by hand.

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

3. Merge the release branch (release PR mode only)

Skip when HEAD is on main.

git switch main
git merge --ff-only release/<version>
git rev-parse HEAD                      # must equal the PR's headRefOid from step 1

Fast-forward only, locally — then tag (step 4) and push (step 5). The stack lands on main byte-identical — same SHAs, same signatures, release commit at the tip. GitHub marks the PR merged on its own once the PR's head commit is reachable from main. Never merge through the GitHub UI or gh pr merge: squash destroys the stack, rebase-and-merge rewrites every SHA (stripping the signatures), and a merge commit breaks the linear history.

If --ff-only refuses, main moved underneath the release branch. Halt and report — nothing has been created yet, and rebasing would change the SHAs the review pass approved and the PR records as its head, so that decision belongs to the caller. A rev-parse that disagrees with the PR's headRefOid after a successful fast-forward is the same halt.

4. Create the annotated tag

The tag goes on HEAD. In release PR mode that is main's tip after step 3 — the commit the PR's headRefOid names — so the tag is created on the branch it stays reachable from.

git tag -a v<version> --cleanup=whitespace -m "<tag message with embedded newlines>"

If v<version> already exists and points at HEAD, a prior run created it — proceed. If it exists and points anywhere else, halt and report the conflict with the version string, the existing tag SHA, and HEAD. Never delete or move a tag without explicit authorization.

Use -m with embedded newlines in the string (plain -m only — no heredoc, no command substitution). The tag message renders as the GitHub Release body via --notes-from-tag. It must be structured markdown, not a flat string.

Release PR mode: the tag body is the PR body's ## Changes bullets plus its final changelog link, verbatim — gh pr view <N> --json body -q .body (<N> from step 1 — on main there is no branch for gh to infer it from), take the theme line as the subject, the bullets under ## Changes, and the last line; drop ## Gates and the headers. That digest was authored at wrapup and reviewed on the PR; re-authoring it here would publish unreviewed words. The one addition: append · release PR #<N> to that final line, so the GitHub Release points at its audit trail (GitHub autolinks the bare #<N>). Without a PR, author it from the changelog entry at changelog/<major.minor>.x/<version>.md — every claim in the tag must appear in that file, and the file's summary: line is the tag's theme.

--cleanup=whitespace is load-bearing. The default cleanup (strip) deletes #-leading lines as comments, so markdown headers silently vanish from the tag body. --cleanup=verbatim is worse: it skips end-of-message normalization, so with tag signing enabled the signature is appended flush against the message's last character — git then can't parse its own signature (the tag reads as unsigned) and the whole -----BEGIN SSH SIGNATURE----- block publishes verbatim into the GitHub Release body.

Format — a headline digest, never a section-by-section changelog mirror:

<theme — omit version number, GitHub prepends v<VERSION>:>

- <notable user-facing change> (#N)
- <notable user-facing change> (#N)
- <ONE compact grouped line for the minor/internal changes — build config, repo hygiene, metadata>
- deps: `@cyanheads/mcp-ts-core` ^0.10.6 → ^0.10.14 (+ dev-dep bumps)

[CHANGELOG v<version>](https://github.com/<OWNER>/<REPO>/blob/main/changelog/<major.minor>.x/<version>.md) · release PR #<N>

( · release PR #<N> only in release PR mode; without a PR the line ends at the changelog link.)

Rules:

• Subject line omits the version number (GitHub prepends v<VERSION>: to the release title)
• Flat bullets only — never Keep-a-Changelog section headers. Added:/Changed:/Fixed:/Dependency bumps: belong in the changelog file; a tag that mirrors the changelog's structure is wrong even when every line is accurate
• Complete at headline granularity — every changelog-worthy change stays visible: notable changes get their own bullet, minor/internal items (build config, repo hygiene, metadata) share ONE grouped compact bullet. Nothing silently dropped, nothing expanded — the changelog carries the depth, the tag carries the existence
• Deps: one line max, naming only what earns it (the framework bump, a major); per-package arrows for the rest live in the changelog entry only
• No gates line — test counts and devcheck status are changelog detail (and PR-body material in release PR mode), not release-body material
• No narrative preamble — bullets under the subject, no paragraph blocks
• No marketing adjectives
• Length is earned — a subject + two bullets + changelog link is a fine tag for a small patch
• Issue backlinks: when changes address GitHub issues, include (#N) references in the relevant bullets — same as the changelog entry. The backlinks render as clickable links in the GitHub Release body.
• Changelog link (final line): end the tag body with a Markdown link to this version's changelog file, so the GitHub Release offers a one-click jump to the full entry — [CHANGELOG v<version>](https://github.com/<OWNER>/<REPO>/blob/main/changelog/<major.minor>.x/<version>.md). Derive <OWNER>/<REPO> from the origin remote; the path mirrors the changelog file (e.g. changelog/0.10.x/0.10.12.md). Keep the blank line above it so it renders as its own paragraph. In release PR mode the same line continues with · release PR #<N> — the release then links both the depth (changelog) and the audit trail (PR).

Verify before moving on:

git show v<version> --stat | head -20   # tag points at HEAD (the release commit)
git tag -l v<version> --format='%(if)%(contents:signature)%(then)signed%(else)unsigned%(end)'   # with tag signing enabled, must print "signed"

unsigned under enabled tag signing means the signature didn't parse (see the cleanup note above) — delete and recreate the tag now, before it leaks the signature block into the GitHub Release body. This is the one tag deletion that needs no authorization: the tag is local, seconds old, and yours.

5. Push to origin

git push origin main
git push origin v<version>

Push main first, then the tag. If the remote rejects either push, halt.

Release PR mode, after both pushes: confirm gh pr view <N> --json state reports MERGED, then delete the remote branch — git push origin --delete release/<version> — and the local one — git branch -d release/<version>. A PR that reports CLOSED or OPEN instead means the pushed main does not contain the PR's head commit — stop and report before publishing anything.

6. 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).

7. Publish to MCP Registry

Only if server.json exists at the repo root (otherwise skip). Note: server.json (MCP Registry metadata) and manifest.json (MCPB bundle manifest, step 8) are independent — a project may have either, both, or neither.

bun run publish-mcp

If publish-mcp isn't defined in package.json, add it permanently (one-time setup, macOS):

"publish-mcp": "mcp-publisher login github -token \"$(security find-generic-password -a \"$USER\" -s mcp-publisher-github-pat -w)\" && mcp-publisher publish"

Prereq: a GitHub PAT with read:org + read:user scopes stored in Keychain under the service name mcp-publisher-github-pat:

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".

8. Create GitHub Release

Pre-flight: --notes-from-tag publishes the tag message as-is. With tag signing enabled, confirm the tag's signature parses — git tag -l v<version> --format='%(contents:signature)' must be non-empty. Empty on a signing-enabled repo (e.g. a tag created with --cleanup=verbatim) means git is treating the signature as message text, and the -----BEGIN SSH SIGNATURE----- block will land in the public release body — the tag is already pushed by now, so halt and report rather than recreating it silently.

For all projects (including those without manifest.json):

bun run release:github

The script (scripts/release-github.ts) handles everything in one command:

• Reads version from package.json
• Derives the tag subject via git for-each-ref refs/tags/v<version>
• Runs gh release create v<version> --verify-tag --notes-from-tag --title "v<version>: <subject>"
• Attaches dist/*.mcpb when manifest.json exists (skip the bun run bundle step first if not already built — see below)
• On "release already exists" (re-invocation after a prior partial run): uploads/clobbers the .mcpb asset (if applicable) and patches the title via gh release edit

If manifest.json exists, build the bundle first so the asset is ready:

bun run bundle              # produces dist/<name>.mcpb (stable filename, no version)
bun run release:github      # attach + release in one step

The stable filename matters: it lets the README "Install in Claude Desktop" badge point at releases/latest/download/<name>.mcpb and always resolve to the most recent release. The bundle script in the templates outputs dist/{{PACKAGE_NAME}}.mcpb for this reason.

Deterministic download URLs (for MCPB projects):

• Pinned to this version: https://github.com/<OWNER>/<REPO>/releases/download/v<VERSION>/<name>.mcpb
• Always latest (powers the install badge): https://github.com/<OWNER>/<REPO>/releases/latest/download/<name>.mcpb

If server.json includes an MCPB packages[] entry, its identifier should match this URL and fileSha256 should match shasum -a 256 <bundle> — keep these in sync during wrapup, not here.

Framework note: mcp-ts-core has no manifest.json — the bundle attach path is skipped automatically. Skip the Docker build/push step too (this framework package is consumed via npm, not as a container image).

Halt on any non-zero exit not handled by the script's built-in fallback.

9. Publish Docker image

Only if Dockerfile exists at the repo root (otherwise skip).

Derive:

• OWNER/REPO from the origin remote URL — use your git tools to read it; strip .git, handle both https://github.com/<owner>/<repo> and git@github.com:<owner>/<repo> forms
• VERSION from package.json (step 1)

docker buildx build --platform linux/amd64,linux/arm64 \
  --build-arg APP_VERSION=<VERSION> \
  -t ghcr.io/<OWNER>/<REPO>:<VERSION> \
  -t ghcr.io/<OWNER>/<REPO>:latest \
  --push .

The build stage in Dockerfile must carry FROM --platform=$BUILDPLATFORM (the templates ship it). Without it the non-native leg of the multi-arch build runs under QEMU, where bun >= 1.4 aborts inside bun run build with a JavaScriptCore allocator assertion (qemu: uncaught target signal 6, exit 134) and no image publishes for either architecture. npm, the MCP Registry, and the GitHub Release have all published by this step, so the recovery is a follow-up patch release rather than a retry — check the flag before building, not after.

If the project uses a non-GHCR registry or a custom image name, respect the project's convention. If push fails with a 401/403, prompt the user to authenticate (echo $GITHUB_TOKEN | docker login ghcr.io -u <OWNER> --password-stdin) and retry. Halt on build failure or non-auth push failure.

10. Report the deployed artifacts

Print clickable URLs for every destination that succeeded:

• npm: https://www.npmjs.com/package/<package.json#name>/v/<version>
• MCP Registry: https://registry.modelcontextprotocol.io/v0.1/servers/<mcpName>/versions/<version> — mcpName is the name field from server.json (URL-encode the / as %2F)
• GitHub Release: https://github.com/<OWNER>/<REPO>/releases/tag/v<VERSION> (with .mcpb asset attached)
• GHCR: ghcr.io/<OWNER>/<REPO>:<VERSION>

Skip any destination that was skipped in its step.

11. Verify artifacts are reachable

Confirm each published artifact is actually live — don't rely on a successful push exit code alone. For each destination that succeeded:

Never disable the sandbox to complete a verification. A verification curl — most often the MCP Registry one — can come back blocked by a sandbox network restriction while npm and GHCR pass. Do not set dangerouslyDisableSandbox or otherwise route around the restriction; report the block and let the orchestrator verify from its own session. A blocked verification is not evidence of a failed publish — when the publish step itself reported success, report the two facts separately rather than treating the block as something to defeat.

• npm: npm view <package.json#name>@<version> version — must return the version string
• MCP Registry: curl -s "https://registry.modelcontextprotocol.io/v0.1/servers/<mcpName>/versions/<version>" — must return HTTP 200 with server.version matching <version> (mcpName is the name field from server.json; URL-encode / as %2F). The search endpoint (/v0.1/servers?search=) paginates and may not include the latest version for packages with many releases — always use the direct version lookup.
• GitHub Release: gh release view v<VERSION> -R <OWNER>/<REPO> --json assets --jq '.assets[].name' — must list the .mcpb file
• GHCR: docker manifest inspect ghcr.io/<OWNER>/<REPO>:<VERSION> — must exit 0 (resolves multi-arch OCI indexes directly with the correct media types; exits non-zero when the tag is genuinely absent)
  • The manifest check is the whole verification available on a single-arch host. Running the published image for a foreign architecture (docker run --platform linux/amd64 on an arm64 host) is emulation and hits the same bun/QEMU assertion the build stage avoids, so a failure there says nothing about the image. Verifying a foreign-arch image by running it requires a native host of that architecture.

If any check fails, halt and report which destination is unreachable. A successful docker push or bun publish exit code does not guarantee the artifact is queryable — registry propagation delays, auth scoping, and partial failures all exist.

Checklist

• Working tree clean; release commit at HEAD; on main or release/<version>; release PR mode: PR head equals local HEAD and the review pass is confirmed finished
• bun run devcheck passes
• bun run rebuild succeeds
• bun run test:all (or test) passes
• bun run test:package passes, when the project defines it
• Release PR mode: git merge --ff-only onto main locally — never the GitHub merge button; HEAD equals the PR's headRefOid afterwards
• Annotated tag v<version> created on HEAD (main's tip in release PR mode) with --cleanup=whitespace, headline-digest body, changelog link as final line, signature parses
• main pushed, then the tag pushed
• Release PR mode: PR reports MERGED; remote and local release/<version> deleted
• bun publish --access public succeeds
• bun run publish-mcp succeeds (if server.json present)
• bun run bundle (if manifest.json present) + bun run release:github succeeds
• Docker buildx multi-arch push succeeds (if Dockerfile present)
• All published artifacts verified reachable (npm, MCP Registry, GH Release asset, GHCR manifest)
• On re-invocation: idempotent-success signals recognized for already-published destinations
• Deployed artifact URLs reported to the user