[renanfagundes]

Run-NaN:

Every platform manifest now has the fields its listing reads, and the shared values live in one file so they can't drift.

What changed

• Claude Code plugin.json: adds displayName, repository, and the fields Anthropic's directory reads for the listing (icon, documentationUrl, supportUrl, privacyPolicyUrl, termsOfServiceUrl).
• Codex plugin.json: adds repository and drops the empty screenshots list.
• Antigravity plugin.json: gets repository and the shared values from the sync. No category: agy 1.4 rejects it as an unknown field.
• Both marketplace entries: add category.
• One source for shared values: scripts/plugin-metadata.json holds version, author, homepage, repository, license, keywords and category. node scripts/sync-manifests.mts writes them into every manifest and the README sample output. A release now means changing version there and running the script.
• Codex release zip: node scripts/build-codex-zip.mts builds dist/unity-codex-<version>.zip for OpenAI's plugin portal. It refuses to build if the manifests drift, leaves out evals/ and tests/, and prints the version and skill count to check before uploading.
• CI: a new Validate manifests workflow typechecks the scripts with tsc (strict), then runs sync-manifests.mts --check and fails if any manifest drifts. The scripts are TypeScript and run directly on Node 24.

Deliberately not added

• version on the Claude marketplace entry: plugin.json wins at install and claude plugin validate warns when both are set.
• Display fields (author, homepage, license, keywords) on the Claude marketplace entry: entry values override plugin.json, and the relative ./ source already lets Claude Code read plugin.json before install.
• owner and description in .agents/plugins/marketplace.json: the Codex marketplace schema doesn't define them.
• A root plugin.json (the newer Codex layout): Antigravity also reads a root plugin.json, so the Codex settings stay in .codex-plugin/.

Check	Result
claude plugin validate . --strict on a clean checkout (Claude Code 2.1.289)	✅ passes
node scripts/sync-manifests.mts --check	✅ passes
Drift detection: changing only the version in plugin-metadata.json	✅ --check exits 1 and lists the three manifests and the README
agy plugin validate . (Antigravity CLI 1.4.4)	✅ passes. --strict fails on main too: six skills are over the 24,000-byte body limit (see below)
Codex validate_plugin.py (last published version; Codex removed it from the CLI in September)	✅ passes, except requires_local_executor, which is already on main and in the approved 0.1.8-beta listing

Found, not fixed here: Antigravity loads only the first 24,000 bytes of a skill body, so six skills are cut off there: unity-cli, migrate-birp-to-urp, levelplay-unity-integration, physics-3d-collision, optimize-web and localization. The fix is moving detail into references/ in each skill's source repo, not here.

Also worth confirming policy.authentication: "ON_USE" in .agents/plugins/marketplace.json: current OpenAI docs list ON_INSTALL and ON_FIRST_USE. This PR leaves it unchanged.

No version bump here, so installed users see no change until the next release.

🤖 Generated with Claude Code

[ziyiunity]

Looks good, and it fixes the version drift across manifests. I ran it locally: sync-manifests --check passes, and the zip builds with 32 skills and no evals or tests. Two small things: 'C:\Windows' in build-codex-zip.mts is C:Windows at runtime since \W isn't an escape, so it should be 'C:\\Windows'. And sync-manifests rewrites any 0.x.y in .github/README.md, so a mention of another tool's version (the Codex CLI is 0.x) would get overwritten; matching only the sample output lines would be safer.