fix(mcp): report the real installed version in the MCP handshake#329
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serverInfo.version was hardcoded to "0.5.3" and had drifted several releases behind (current: 0.11.0), so every MCP client saw a stale version in the initialize response. Resolve it at runtime from the package.json one directory above the executing file — the same pattern cli.ts already uses for the argent version banner. That resolves to @swmansion/argent's shipped package.json in the published bundle (dist/mcp-server.mjs) and to @argent/mcp's own package.json in the dev workspace; both are bumped in lockstep. Falls back to "unknown" rather than a literal that can drift.
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Summary
serverInfo.versionin the MCPinitializeresponse was hardcoded to"0.5.3"inmcp-server.tsand had drifted several releases behind the actual install (currently 0.11.0). Spotted while driving the MCP server over stdio:Fix
New
getInstalledVersion()inpackages/argent-mcp/src/installed-version.tsresolves the version at runtime from the package.json one directory above the executing file — the same patternpackages/argent/src/cli.tsalready uses for theargent --versionbanner:dist/mcp-server.mjs→ two-up is @swmansion/argent's shipped package.json@argent/mcpoutput → its own package.jsonBoth are version-bumped in lockstep. Falls back to
"unknown"instead of another literal that can drift.Test plan
npm run build,typecheck:tests, prettier clean🤖 Generated with Claude Code