June 2026 monthly summary for modelcontextprotocol/registry: - Key features delivered: Implemented first-class Cargo Registry Integration by adding support for registryType: cargo. This enables Rust MCP servers published to crates.io to register through the documented validation flow, aligning with the ecosystem and reducing packaging friction. - Major bugs fixed: Resolved runtime-model questions related to cargo vs. other registry types; updated and clarified cargo-related docs to remove stale references; ensured the validator tests cover cargo edge cases and that the full test suite passes. - Overall impact and accomplishments: Enabled crates.io-based MCP servers to register seamlessly in day-one scenarios (two real-world servers queued for day-one register: rust-faf-mcp v0.3.1 and perfetto-mcp-rs). Added live/test anchors and hermetic validation to guarantee end-to-end reliability. No breaking changes; additive enhancement to existing registry types. - Technologies/skills demonstrated: Go test suite and validator patterns, two-call readme URL retrieval in the validator, hermetic mocks and live anchors, comprehensive CI-ready tests, and documentation improvements (docs/modelcontextprotocol-io/package-types.mdx and generic-server-json.md).

October 2025 delivered key MCP capability improvements and documentation across two repositories. Implemented a dedicated MCP server for the .faf format featuring a context scoring engine and project context management, and added a README entry documenting claude-faf-mcp as a persistent project context MCP with tools and scoring. No major bugs reported this period. Impact: enables scalable, context-aware processing for .faf data, improves tooling and onboarding for persistent project contexts, and strengthens cross-repo collaboration.