{"generatedAt":"2026-10-24T12:11:27.697Z","canonicalUrl":"https://agentbreakwatch.vercel.app/p/mcp-handler","llmsTxtUrl":"https://agentbreakwatch.vercel.app/p/mcp-handler/llms.txt","categoryHub":{"slug":"mcp-bridges-devtools","title":"MCP Bridges, Transports, Inspectors & Developer Tools","url":"https://agentbreakwatch.vercel.app/c/mcp-bridges-devtools"},"tldrVerdict":"MCP Handler (mcp-handler) is currently at v2.3.0 on NPM (published 2026-10-07), with a 90-day Stability Score of 86/100 (B+) and MEDIUM schema drift risk. recent release v2.3.0 (up from v2.2.0) updates MCP Bridge & Transport tool schemas and transport handling (8 releases in last 90d). Pin exact version v2.3.0 in .mcp.json to avoid silent parameter drift.","package":{"slug":"mcp-handler","packageName":"mcp-handler","registry":"npm","kind":"mcp","subcategory":"MCP Bridge & Transport","displayName":"MCP Handler","vendor":"vercel-labs","githubRepo":"vercel-labs/mcp-handler","breakingSummary":"recent release v2.3.0 (up from v2.2.0) updates MCP Bridge & Transport tool schemas and transport handling (8 releases in last 90d). Pin exact version v2.3.0 in .mcp.json to avoid silent parameter drift.","schemaDriftRisk":"medium","affectedSymbols":["mcp-adapter","mcp-handler","tools/list","tools/call"],"migrationBefore":"\"mcp-handler\": {\n  \"command\": \"npx\",\n  \"args\": [\"-y\", \"mcp-handler@latest\"]\n}","migrationAfter":"\"mcp-handler\": {\n  \"command\": \"npx\",\n  \"args\": [\"-y\", \"mcp-handler@2.3.0\"]\n}","description":"Framework-agnostic HTTP adapter for Model Context Protocol servers","latestVersion":"2.3.0","latestPublishedAt":"2026-10-07T20:16:41.837Z","recentVersions":[{"version":"2.3.0","publishedAt":"2026-10-07T20:16:41.837Z"},{"version":"2.2.0","publishedAt":"2026-09-18T19:13:33.818Z"},{"version":"2.1.2","publishedAt":"2026-09-18T17:26:48.725Z"},{"version":"2.1.1","publishedAt":"2026-08-13T22:03:43.058Z"},{"version":"2.1.0","publishedAt":"2026-07-30T16:09:24.857Z"},{"version":"2.0.1","publishedAt":"2026-07-29T23:38:14.582Z"}],"releasesLast90d":8,"dependenciesCount":2,"license":"Apache-2.0","registryUrl":"https://www.npmjs.com/package/mcp-handler","githubUrl":"https://github.com/vercel-labs/mcp-handler","installCommand":"npx -y mcp-handler@2.3.0","stabilityScore":86,"stabilityGrade":"B+"}}