WORK-169
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ID:WORK-169Status:draft

Scaffold @refrakt-md/mcp package with stdio entry, auto-detect, and core tools

Create the @refrakt-md/mcp package: stdio MCP server entry point, auto-detection of plan and site contexts from the unified config and the filesystem, and the initial set of core CLI-mirroring tools (refrakt.inspect, refrakt.contracts, refrakt.validate, refrakt.reference, refrakt.package_validate).

Priority:highComplexity:complexMilestone:v0.11.0Source:SPEC-043
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Criteria completion

Criteria completion: 0 of 9 (0%) checked; tracking started on May 1, no incremental history yet0%25%50%75%100%May 1Jun 15

Tracking started May 1 — check back for trends.

Relationships

Implements 1
Related 8
Branches 3
main current draft
claude/v0.11.0-config-foundation doneclaude/mcp-cli-wrapper-design-LsEXZ draftmain draft

Acceptance Criteria

  • New package @refrakt-md/mcp published with bin: { "refrakt-mcp": "./dist/bin.js" } runnable as npx @refrakt-md/mcp
  • Stdio transport using @modelcontextprotocol/sdk server primitives; handshake works in Claude Desktop and Claude Code with the documented mcpServers config
  • detect() reads refrakt.config.json (via loadRefraktConfigFile) and the filesystem to determine plan and site contexts; returns { plan, sites, plugins }
  • Core tools registered: refrakt.inspect, refrakt.inspect_list, refrakt.inspect_audit, refrakt.contracts, refrakt.contracts_check, refrakt.validate, refrakt.reference, refrakt.package_validate
  • Each core tool delegates to the underlying CLI handler (imported from @refrakt-md/cli) rather than re-implementing logic
  • Site-scoped tools accept a site input; required when multiple sites are declared, optional otherwise (input schema reflects this)
  • --cwd <path> server arg overrides the inherited cwd for clients that launch the server outside the project
  • Errors return the structured envelope from SPEC-043: { isError: true, content, errorCode, hint }
  • Tests cover: detection in plan-only / site-only / both / multi-site / neither repos, each core tool's input validation and dispatch, error envelope shape

Approach

  1. New package skeleton at packages/mcp/ mirroring the layout from SPEC-043's "Package Structure" section (bin.ts, server.ts, detect.ts, tools/core.ts, resources/ for later work items).

  2. Use @modelcontextprotocol/sdk (TypeScript MCP SDK). Wire up tool registration, request handling, and error mapping.

  3. Each core tool's handler imports the corresponding command function from @refrakt-md/cli (may require exposing some commands as functions if they are currently only argv-driven — small refactors accepted).

  4. detect() runs once at server start; results cached for the lifetime of the process. Re-detection on filesystem change is out of scope for v1.

  5. --cwd parsed in bin.ts before server bootstrap; affects all subsequent loadRefraktConfigFile calls.

Dependencies

  • WORK-159, WORK-160, WORK-161, WORK-162 — all foundation items
  • WORK-164 — --site resolution helper for site-scoped tools

References

  • SPEC-043 — Refrakt MCP Server
  • ADR-010 — Unified root-level refrakt config
  • @modelcontextprotocol/sdk — MCP TypeScript SDK
  • packages/cli/src/commands/ — handlers to delegate to