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href=\"README.zh-CN.md\"\u003e简体中文\u003c/a\u003e\n\u003c/p\u003e\n\n# Unofficial Relace MCP Server\n\n[![PyPI](https://img.shields.io/pypi/v/relace-mcp.svg)](https://pypi.org/project/relace-mcp/)\n[![Python 3.11+](https://img.shields.io/badge/python-3.11+-blue.svg)](https://www.python.org/downloads/)\n[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](LICENSE)\n![100% AI-Generated](https://img.shields.io/badge/100%25%20AI-Generated-ff69b4.svg)\n[![OpenSSF Scorecard](https://api.scorecard.dev/projects/github.com/possible055/relace-mcp/badge)](https://scorecard.dev/viewer/?uri=github.com/possible055/relace-mcp)\n\n\u003e **Unofficial** — Personal project, not affiliated with Relace.\n\u003e\n\u003e **Built with AI** — Developed entirely with AI assistance (Antigravity, Codex, Cursor, Github Copilot, Windsurf).\n\nMCP server providing AI-powered code editing and intelligent codebase exploration tools.\n\n| Without | With `fast_search` + `fast_apply` |\n|:--------|:----------------------------------|\n| Manual grep, misses related files | Ask naturally, get precise locations |\n| Edits break imports elsewhere | Traces imports and call chains |\n| Full rewrites burn tokens | Describe changes, no line numbers |\n| Line number errors corrupt code | 10,000+ tokens/sec merging |\n\n## Features\n\n- **Fast Apply** — Apply code edits at 10,000+ tokens/sec via Relace API\n- **Fast Search** — Agentic codebase exploration with natural language queries\n- **Cloud Sync** — Upload local codebase to Relace Cloud for semantic search\n- **Cloud Search** — Semantic code search over cloud-synced repositories\n- **Dashboard** — Real-time terminal UI for monitoring operations\n\n## Quick Start\n\n**Prerequisites:** [uv](https://docs.astral.sh/uv/), [git](https://git-scm.com/), [ripgrep](https://github.com/BurntSushi/ripgrep) (recommended)\n\nGet your API key from [Relace Dashboard](https://app.relace.ai/settings/billing), then add to your MCP client:\n\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eCursor\u003c/strong\u003e\u003c/summary\u003e\n\n`~/.cursor/mcp.json`\n\n```json\n{\n  \"mcpServers\": {\n    \"relace\": {\n      \"command\": \"uv\",\n      \"args\": [\"tool\", \"run\", \"relace-mcp\"],\n      \"env\": {\n        \"RELACE_API_KEY\": \"rlc-your-api-key\",\n        \"MCP_BASE_DIR\": \"/absolute/path/to/your/project\"\n      }\n    }\n  }\n}\n```\n\n\u003c/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eClaude Code\u003c/strong\u003e\u003c/summary\u003e\n\n```bash\nclaude mcp add relace \\\n  --env RELACE_API_KEY=rlc-your-api-key \\\n  --env MCP_BASE_DIR=/absolute/path/to/your/project \\\n  -- uv tool run relace-mcp\n```\n\n\u003c/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eWindsurf\u003c/strong\u003e\u003c/summary\u003e\n\n`~/.codeium/windsurf/mcp_config.json`\n\n```json\n{\n  \"mcpServers\": {\n    \"relace\": {\n      \"command\": \"uv\",\n      \"args\": [\"tool\", \"run\", \"relace-mcp\"],\n      \"env\": {\n        \"RELACE_API_KEY\": \"rlc-your-api-key\",\n        \"MCP_BASE_DIR\": \"/absolute/path/to/your/project\"\n      }\n    }\n  }\n}\n```\n\n\u003c/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eVS Code\u003c/strong\u003e\u003c/summary\u003e\n\n`.vscode/mcp.json`\n\n```json\n{\n  \"mcp\": {\n    \"servers\": {\n      \"relace\": {\n        \"type\": \"stdio\",\n        \"command\": \"uv\",\n        \"args\": [\"tool\", \"run\", \"relace-mcp\"],\n        \"env\": {\n          \"RELACE_API_KEY\": \"rlc-your-api-key\",\n          \"MCP_BASE_DIR\": \"${workspaceFolder}\"\n        }\n      }\n    }\n  }\n}\n```\n\n\u003c/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eCodex CLI\u003c/strong\u003e\u003c/summary\u003e\n\n`~/.codex/config.toml`\n\n```toml\n[mcp_servers.relace]\ncommand = \"uv\"\nargs = [\"tool\", \"run\", \"relace-mcp\"]\n\n[mcp_servers.relace.env]\nRELACE_API_KEY = \"rlc-your-api-key\"\nMCP_BASE_DIR = \"/absolute/path/to/your/project\"\n```\n\n\u003c/details\u003e\n\n## Configuration\n\n| Variable | Required | Description |\n|----------|----------|-------------|\n| `RELACE_API_KEY` | ✅ | API key from [Relace Dashboard](https://app.relace.ai/settings/billing) |\n| `RELACE_CLOUD_TOOLS` | ❌ | Set to `1` to enable cloud tools |\n| `MCP_BASE_DIR` | ❌ | Project root (auto-detected via MCP Roots → Git → CWD) |\n| `MCP_LOGGING` | ❌ | Set to `1` to enable file logging |\n| `MCP_DOTENV_PATH` | ❌ | Path to `.env` file for centralized config |\n\nFor `.env` usage, encoding settings, custom LLM providers, and more, see [docs/advanced.md](docs/advanced.md).\n\n## Tools\n\nCore tools (`fast_apply`, `fast_search`) are always available. Cloud tools require `RELACE_CLOUD_TOOLS=1`.\n\nFor detailed parameters, see [docs/tools.md](docs/tools.md).\n\n## Dashboard\n\nReal-time terminal UI for monitoring operations.\n\n```bash\npip install relace-mcp[tools]\nrelogs\n```\n\nFor detailed usage, see [docs/dashboard.md](docs/dashboard.md).\n\n## Platform Support\n\n| Platform | Status | Notes |\n|----------|--------|-------|\n| Linux | ✅ Fully supported | Primary development platform |\n| macOS | ✅ Fully supported | All features available |\n| Windows | ⚠️ Partial | `bash` tool unavailable; use WSL for full functionality |\n\n## Troubleshooting\n\n| Error | Solution |\n|-------|----------|\n| `RELACE_API_KEY is not set` | Set the key in your environment or MCP config |\n| `NEEDS_MORE_CONTEXT` | Include 1–3 anchor lines before/after target block |\n| `FILE_TOO_LARGE` | File exceeds 1MB; split or increase limit |\n| `ENCODING_ERROR` | Set `RELACE_DEFAULT_ENCODING` explicitly |\n| `AUTH_ERROR` | Verify API key is valid and not expired |\n| `RATE_LIMIT` | Too many requests; wait and retry |\n\n## Development\n\n```bash\ngit clone https://github.com/possible055/relace-mcp.git\ncd relace-mcp\nuv sync --extra dev\nuv run pytest\n```\n\n## License\n\nMIT\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fpossible055%2Frelace-mcp","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fpossible055%2Frelace-mcp","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fpossible055%2Frelace-mcp/lists"}