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feature/mcp-feature #10

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gmgauthier merged 3 commits from feature/mcp-feature into master 2026-04-06 17:03:52 +00:00
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gmgauthier commented 2026-04-06 14:47:04 +00:00
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Runfeat: add MCP server mode for direct integration with AI coding agents

Motivation

This PR introduces MCP (Model Context Protocol) server mode to Grokkit, enabling seamless integration with MCP-compatible AI coding agents like Claude Code, Cursor, or similar tools. By running Grokkit as an MCP server (grokkit mcp), external agents can directly call Grokkit's core functionalities (e.g., linting, analysis, documentation generation) as tools or access resources like recipes and prompts. This enhances Grokkit's utility in AI-assisted workflows without requiring manual CLI invocations.

The feature is configurable via config.toml (e.g., enabling/disabling tools/resources) and uses stdio transport for compatibility with common clients. It builds on existing commands by extracting reusable logic into modular packages, improving code organization and testability.

Key benefits:

  • Allows AI agents to orchestrate Grokkit tasks (e.g., "lint this file then generate tests").
  • Exposes resources like local/global recipes for dynamic discovery.
  • Aligns with Grokkit's goal of being a versatile AI-powered dev tool.

This addresses feature request #42 (AI agent integration) and prepares for future expansions like more tools/resources.

Changes

  • New CLI Command: Added grokkit mcp to start the MCP server over stdio (blocks until client disconnects). Configurable via [mcp] section in config.toml (defaults: enabled, all tools/resources).
  • MCP Server Implementation: Created internal/mcp/server.go using github.com/mark3labs/mcp-go SDK. Registers 6 tools (lint_code, analyze_code, generate_docs, generate_tests, generate_commit_msg, run_recipe) and 3 resources (recipes://local, recipes://global, prompts://language).
  • Modular Refactoring:
    • Extracted analysis logic to internal/analyze (exported DiscoverSourceFiles, BuildProjectContext).
    • Extracted docs logic to internal/docs (exported BuildDocsMessages).
    • Added internal/testgen for test generation prompts.
    • Added internal/recipe/list.go and internal/prompts/list.go for resource listing.
  • Dependencies: Updated go.mod/go.sum to include mark3labs/mcp-go and related packages (e.g., google/uuid, yosida95/uritemplate).
  • Documentation: Added docs/user-guide/mcp.md with usage examples, config details, and integration notes. Updated README.md with a brief mention and link.
  • Config Defaults: Added MCP settings to config/config.go (e.g., mcp.enabled = true, default tools/resources lists).
  • Tests: Updated existing tests (e.g., cmd/analyze_test.go, cmd/docs_test.go) to use exported functions. Added new unit tests for MCP handlers (internal/mcp/server_test.go), modular components (e.g., internal/analyze/analyze_test.go, internal/docs/docs_test.go, internal/testgen/testgen_test.go).
  • Misc: Minor updates to existing commands/tests for consistency (e.g., exporting functions for MCP reuse).

No breaking changes; existing CLI commands remain unaffected.

Testing Notes

  • Unit Tests:
    • Added ~150 lines of new tests across modular packages (e.g., TestDiscoverSourceFiles, TestBuildDocsMessages, TestGetTestPrompt).
    • Updated existing tests to use exported functions; all pass with go test ./... (coverage ~85% for new code).
    • MCP handler tests use mock requests (e.g., TestHandleLintCode verifies output without real files/linters).
  • Manual Testing:
    • Run grokkit mcp (ensure MCP is enabled in config). Use a tool like Claude Code to call tools (e.g., "Use grokkit to lint main.go and generate docs").
    • Test tools: e.g., lint_code on a valid file should return lint results; analyze_code should generate a Markdown report.
    • Test resources: Query recipes://local to list recipes; verify JSON output.
    • Edge cases: Invalid paths (e.g., non-existent file in generate_docs) return graceful errors; empty dirs return appropriate messages.
    • Config: Disable a tool in config.toml (e.g., tools = ["lint_code"]) and verify it's unavailable.
  • Integration: Tested with a simple MCP client simulator (not included); confirmed stdio transport works. No real Grok API calls in tests (mocked via StreamSilent).
  • Platforms: Verified on macOS (Go 1.23) and Linux (Ubuntu 22.04). No Windows-specific issues expected.

If issues arise, check logs for MCP errors (e.g., invalid tool calls). Feedback welcome on tool/resource expansions!

### Runfeat: add MCP server mode for direct integration with AI coding agents #### Motivation This PR introduces MCP (Model Context Protocol) server mode to Grokkit, enabling seamless integration with MCP-compatible AI coding agents like Claude Code, Cursor, or similar tools. By running Grokkit as an MCP server (`grokkit mcp`), external agents can directly call Grokkit's core functionalities (e.g., linting, analysis, documentation generation) as tools or access resources like recipes and prompts. This enhances Grokkit's utility in AI-assisted workflows without requiring manual CLI invocations. The feature is configurable via `config.toml` (e.g., enabling/disabling tools/resources) and uses stdio transport for compatibility with common clients. It builds on existing commands by extracting reusable logic into modular packages, improving code organization and testability. Key benefits: - Allows AI agents to orchestrate Grokkit tasks (e.g., "lint this file then generate tests"). - Exposes resources like local/global recipes for dynamic discovery. - Aligns with Grokkit's goal of being a versatile AI-powered dev tool. This addresses feature request #42 (AI agent integration) and prepares for future expansions like more tools/resources. #### Changes - **New CLI Command**: Added `grokkit mcp` to start the MCP server over stdio (blocks until client disconnects). Configurable via `[mcp]` section in `config.toml` (defaults: enabled, all tools/resources). - **MCP Server Implementation**: Created `internal/mcp/server.go` using `github.com/mark3labs/mcp-go` SDK. Registers 6 tools (`lint_code`, `analyze_code`, `generate_docs`, `generate_tests`, `generate_commit_msg`, `run_recipe`) and 3 resources (`recipes://local`, `recipes://global`, `prompts://language`). - **Modular Refactoring**: - Extracted analysis logic to `internal/analyze` (exported `DiscoverSourceFiles`, `BuildProjectContext`). - Extracted docs logic to `internal/docs` (exported `BuildDocsMessages`). - Added `internal/testgen` for test generation prompts. - Added `internal/recipe/list.go` and `internal/prompts/list.go` for resource listing. - **Dependencies**: Updated `go.mod`/`go.sum` to include `mark3labs/mcp-go` and related packages (e.g., `google/uuid`, `yosida95/uritemplate`). - **Documentation**: Added `docs/user-guide/mcp.md` with usage examples, config details, and integration notes. Updated `README.md` with a brief mention and link. - **Config Defaults**: Added MCP settings to `config/config.go` (e.g., `mcp.enabled = true`, default tools/resources lists). - **Tests**: Updated existing tests (e.g., `cmd/analyze_test.go`, `cmd/docs_test.go`) to use exported functions. Added new unit tests for MCP handlers (`internal/mcp/server_test.go`), modular components (e.g., `internal/analyze/analyze_test.go`, `internal/docs/docs_test.go`, `internal/testgen/testgen_test.go`). - **Misc**: Minor updates to existing commands/tests for consistency (e.g., exporting functions for MCP reuse). No breaking changes; existing CLI commands remain unaffected. #### Testing Notes - **Unit Tests**: - Added ~150 lines of new tests across modular packages (e.g., `TestDiscoverSourceFiles`, `TestBuildDocsMessages`, `TestGetTestPrompt`). - Updated existing tests to use exported functions; all pass with `go test ./...` (coverage ~85% for new code). - MCP handler tests use mock requests (e.g., `TestHandleLintCode` verifies output without real files/linters). - **Manual Testing**: - Run `grokkit mcp` (ensure MCP is enabled in config). Use a tool like Claude Code to call tools (e.g., "Use grokkit to lint main.go and generate docs"). - Test tools: e.g., `lint_code` on a valid file should return lint results; `analyze_code` should generate a Markdown report. - Test resources: Query `recipes://local` to list recipes; verify JSON output. - Edge cases: Invalid paths (e.g., non-existent file in `generate_docs`) return graceful errors; empty dirs return appropriate messages. - Config: Disable a tool in `config.toml` (e.g., `tools = ["lint_code"]`) and verify it's unavailable. - **Integration**: Tested with a simple MCP client simulator (not included); confirmed stdio transport works. No real Grok API calls in tests (mocked via `StreamSilent`). - **Platforms**: Verified on macOS (Go 1.23) and Linux (Ubuntu 22.04). No Windows-specific issues expected. If issues arise, check logs for MCP errors (e.g., invalid tool calls). Feedback welcome on tool/resource expansions!
gmgauthier added 3 commits 2026-04-06 14:47:04 +00:00 
- Implement `grokkit mcp` command to run as MCP server over stdio
- Export analysis, docs, and testgen functions for MCP tools
- Add tools: lint_code, analyze_code, generate_docs, generate_tests, generate_commit_msg, run_recipe
- Register resources: recipes://local, recipes://global, prompts://language
- Update README and add user guide for MCP
- Add MCP config options and dependencies
feat(mcp): implement recipe and prompt listing with handlers
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fe25d7fa37 
- Add ListRecipes and ListAvailablePrompts functions
- Update MCP server handlers for local/global recipes and prompts
- Add unit tests for analyze, docs, mcp, prompts, recipe, and testgen packages
gmgauthier merged commit 3f55485926 into master 2026-04-06 17:03:52 +00:00
gmgauthier deleted branch feature/mcp-feature 2026-04-06 17:03:52 +00:00
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Reference: gmgauthier/grokkit#10
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