v0.5.4 — MIT
The engine is now MIT licensed — one license for the whole repository (components/ already were). The trademark reservations in TRADEMARKS.md are unchanged. The CLA is retired: MIT in, MIT out, no signature ceremony.
Why: the MCP ecosystem is MIT end to end (the official SDKs, the hosts we bridge into), embedding the engine inside other hosts is exactly how it grows, and several registries reject copyleft outright. Nothing tightens for anyone; everything loosens.
Also in this release: version numbers 0.5.2/0.5.3 were burned by an npm publish incident (npm-side only — GitHub v0.5.2 exists and is fine); the npm package resumes at 0.5.4 as @2nd1st/open-mcp-apps.