{
  "slug": "io-github-icyhot09-opengrok-mcp-server",
  "name": "io.github.IcyHot09/opengrok-mcp-server",
  "title": "OpenGrok MCP Server",
  "description": "MCP server bridging OpenGrok search engine with AI for instant context across massive codebases.",
  "version": "9.6.0",
  "publishedAt": "2026-09-16T07:02:40.419221Z",
  "updatedAt": "2026-09-16T07:02:40.419221Z",
  "repoUrl": "https://github.com/IcyHot09/opengrok-mcp-server",
  "websiteUrl": "https://github.com/IcyHot09/opengrok-mcp-server",
  "namespace": {
    "type": "github",
    "owner": "IcyHot09"
  },
  "kind": "local",
  "packages": [
    {
      "registryType": "npm",
      "identifier": "opengrok-mcp-server",
      "version": "9.6.0",
      "transport": "stdio",
      "runtimeHint": "npx"
    }
  ],
  "remotes": [],
  "envVars": [
    {
      "name": "OPENGROK_BASE_URL",
      "isSecret": false,
      "isRequired": true,
      "description": "OpenGrok server base URL (e.g. https://opengrok.example.com/source/)"
    },
    {
      "name": "OPENGROK_USERNAME",
      "isSecret": false,
      "isRequired": false,
      "description": "OpenGrok authentication username. Leave unset for anonymous access."
    },
    {
      "name": "OPENGROK_PASSWORD",
      "isSecret": true,
      "isRequired": false,
      "description": "OpenGrok authentication password. Prefer storing via OS keychain using 'npx opengrok-mcp-server setup'."
    },
    {
      "name": "OPENGROK_VERIFY_SSL",
      "isSecret": false,
      "isRequired": false,
      "description": "Verify TLS certificates. Set to false for self-signed or internal CA certs."
    },
    {
      "name": "OPENGROK_CODE_MODE",
      "isSecret": false,
      "isRequired": false,
      "description": "Enable Code Mode: 2-tool sandbox interface with env.opengrok.* JavaScript API. Reduces AI token usage by ~90%."
    },
    {
      "name": "OPENGROK_ENABLE_MEMORY_TOOLS",
      "isSecret": false,
      "isRequired": false,
      "description": "Register the 3 memory tools in Code Mode (memory status, read, update). Off = api + execute only."
    },
    {
      "name": "OPENGROK_DEFAULT_PROJECT",
      "isSecret": false,
      "isRequired": false,
      "description": "Default project to scope all searches. Can be overridden per call."
    },
    {
      "name": "OPENGROK_CONTEXT_BUDGET",
      "isSecret": false,
      "isRequired": false,
      "description": "Response size tier controlling token usage."
    },
    {
      "name": "OPENGROK_API_VERSION",
      "isSecret": false,
      "isRequired": false,
      "description": "OpenGrok REST API version. Use v2 for call graph features (requires OpenGrok 1.12+)."
    },
    {
      "name": "HTTP_PROXY",
      "isSecret": false,
      "isRequired": false,
      "description": "HTTP/HTTPS proxy URL for all OpenGrok API requests (e.g. http://proxy.company.com:8080). Also set as HTTPS_PROXY."
    },
    {
      "name": "OPENGROK_RESPONSE_FORMAT_OVERRIDE",
      "isSecret": false,
      "isRequired": false,
      "description": "Force a specific response format for all tools. Leave unset for per-tool auto-selection (recommended)."
    },
    {
      "name": "OPENGROK_MEMORY_BANK_DIR",
      "isSecret": false,
      "isRequired": false,
      "description": "Directory where the AI stores investigation notes (active-task.md, investigation-log.md). Defaults to ~/.config/opengrok-mcp/memory-bank/ or workspace-relative when set by the VS Code extension."
    },
    {
      "name": "OPENGROK_LOCAL_COMPILE_DB_PATHS",
      "isSecret": false,
      "isRequired": false,
      "description": "Comma-separated paths to compile_commands.json for C/C++ compiler flag and include-path extraction. Leave unset for automatic workspace discovery."
    },
    {
      "name": "OPENGROK_ENABLE_ELICITATION",
      "isSecret": false,
      "isRequired": false,
      "description": "Interactive AI Prompts — the AI pauses to ask questions during investigations (project selection, file disambiguation). Requires Claude Code v2.1.76+ or a client that supports MCP Elicitation."
    },
    {
      "name": "OPENGROK_ENABLE_SAMPLING",
      "isSecret": false,
      "isRequired": false,
      "description": "AI Sampling — allow the server to request LLM completions for error explanations and summaries. Off by default to avoid consuming premium requests (e.g. GitHub Copilot)."
    },
    {
      "name": "OPENGROK_SAMPLING_MODEL",
      "isSecret": false,
      "isRequired": false,
      "description": "Model preference for MCP Sampling (used for error explanation and query reformulation)."
    },
    {
      "name": "OPENGROK_ENABLE_FILES_API",
      "isSecret": false,
      "isRequired": false,
      "description": "Files API Cache — avoids re-uploading unchanged investigation notes. Requires Files API support in the MCP client."
    },
    {
      "name": "OPENGROK_ENABLE_OBSERVATION_MASKER",
      "isSecret": false,
      "isRequired": false,
      "description": "Observation Masker — prepend compact history summaries to opengrok_execute results after N turns. Disabled by default; has no benefit for clients that retain full context (Claude Code, Cursor)."
    },
    {
      "name": "OPENGROK_OBSERVATION_MASKER_TURNS",
      "isSecret": false,
      "isRequired": false,
      "description": "Number of most-recent opengrok_execute results to keep as full text before masking older ones. Default: 10."
    },
    {
      "name": "OPENGROK_SAMPLING_MAX_TOKENS",
      "isSecret": false,
      "isRequired": false,
      "description": "Maximum tokens for AI sampling responses (error explanation, query reformulation). Range: 64–4096."
    },
    {
      "name": "OPENGROK_AUDIT_LOG_FILE",
      "isSecret": false,
      "isRequired": false,
      "description": "Path to write structured audit events (CSV/JSON). Appends tool invocations, elicitation events, and errors. Leave unset to disable."
    },
    {
      "name": "OPENGROK_RATELIMIT_RPM",
      "isSecret": false,
      "isRequired": false,
      "description": "Maximum requests per minute to the OpenGrok server. Default: 60."
    },
    {
      "name": "OPENGROK_PER_TOOL_RATELIMIT",
      "isSecret": false,
      "isRequired": false,
      "description": "Per-tool rate limits in requests per minute, as comma-separated tool:rpm pairs (e.g. opengrok_execute:15,opengrok_search_code:30). Overrides OPENGROK_RATELIMIT_RPM for specific tools."
    },
    {
      "name": "OPENGROK_TIMEOUT",
      "isSecret": false,
      "isRequired": false,
      "description": "HTTP request timeout in seconds for OpenGrok API calls. Increase for slow servers. Default: 30."
    },
    {
      "name": "OPENGROK_DEFAULT_MAX_RESULTS",
      "isSecret": false,
      "isRequired": false,
      "description": "Default maximum number of results returned per search query. Default: 25."
    },
    {
      "name": "OPENGROK_PASSWORD_FILE",
      "isSecret": false,
      "isRequired": false,
      "description": "Path to a file containing the OpenGrok password (file-mounted secret for containers). Takes precedence over the OS keychain when OPENGROK_PASSWORD is unset."
    },
    {
      "name": "OPENGROK_MAX_RESPONSE_BYTES",
      "isSecret": false,
      "isRequired": false,
      "description": "Hard cap on response payload size in bytes. Overrides the context-budget default. Non-positive values are ignored."
    },
    {
      "name": "OPENGROK_SEARCH_AND_READ_CAP",
      "isSecret": false,
      "isRequired": false,
      "description": "Cap for the search_and_read compound tool in bytes. Overrides the context-budget default (2–8 KB depending on tier). Non-positive values are ignored."
    },
    {
      "name": "OPENGROK_STRICT_SSRF",
      "isSecret": false,
      "isRequired": false,
      "description": "When true, reject OPENGROK_BASE_URL values pointing at private/loopback IPs at startup. Default: false (warn only; per-request guards still apply)."
    },
    {
      "name": "OPENGROK_JWT_ISSUER",
      "isSecret": false,
      "isRequired": false,
      "description": "Expected JWT issuer (iss claim) for HTTP transport OAuth. When set, JWTs from other issuers are rejected."
    },
    {
      "name": "OPENGROK_GRAMMAR_DIR",
      "isSecret": false,
      "isRequired": false,
      "description": "Directory containing tree-sitter WASM grammars. Overrides the bundled grammar lookup."
    }
  ],
  "category": "search-web",
  "subcategory": "search",
  "company": "",
  "categoryAuto": true,
  "checks": [
    {
      "id": "source-linked",
      "label": "Source repository linked",
      "result": "pass",
      "detail": "https://github.com/IcyHot09/opengrok-mcp-server"
    },
    {
      "id": "version-pinned",
      "label": "Version pinned",
      "result": "pass",
      "detail": "Every package has an explicit version"
    },
    {
      "id": "secrets-requested",
      "label": "Secrets requested",
      "result": "info",
      "detail": "Asks for 1 secret: OPENGROK_PASSWORD"
    },
    {
      "id": "known-registry",
      "label": "Known package registry",
      "result": "pass",
      "detail": "All packages come from npm, PyPI, OCI, NuGet or MCPB"
    },
    {
      "id": "namespace",
      "label": "Namespace ownership",
      "result": "info",
      "detail": "Name verified via GitHub account IcyHot09"
    },
    {
      "id": "meta-text",
      "label": "Registry text aimed at the AI",
      "result": "pass",
      "detail": "Description and settings contain no hidden characters or instructions to the AI"
    },
    {
      "id": "install-scripts",
      "label": "Install scripts",
      "result": "pass",
      "detail": "opengrok-mcp-server@9.6.0 runs nothing at install"
    },
    {
      "id": "code-flags",
      "label": "Code red flags",
      "result": "warn",
      "detail": "Very long encoded blob in code (out/server/main.js:5: \"\"AGFzbQEAAAABJwdgAX8Bf2ADf39/AX9gAn9/AGABfwBgBH9/f38Bf2AAAGADf39/AALLAQgDZW52GHdhc21fb25faGVhZGVyc19\")"
    },
    {
      "id": "ai-text",
      "label": "Text aimed at the AI",
      "result": "pass",
      "detail": "No hidden characters or instructions to the AI in 5 files, including comments and the README"
    }
  ],
  "scannedAt": "2026-10-29",
  "level": "Scanned",
  "install": [
    {
      "label": "Claude Desktop (npm)",
      "kind": "claude_desktop_json",
      "text": "{\n  \"mcpServers\": {\n    \"opengrok-mcp-server\": {\n      \"command\": \"npx\",\n      \"args\": [\n        \"-y\",\n        \"opengrok-mcp-server@9.6.0\"\n      ],\n      \"env\": {\n        \"OPENGROK_BASE_URL\": \"<your value>\"\n      }\n    }\n  }\n}"
    }
  ],
  "curated": true,
  "stars": 10,
  "archived": false,
  "pushedAt": "2026-09-25T06:47:46Z",
  "health": {
    "score": 52,
    "parts": {
      "popularity": 0.3309565241264337,
      "activity": 0.6148904789516009,
      "issues": null,
      "security": 0.8
    },
    "fail": 0,
    "warn": 1,
    "raw": {
      "stars": 10,
      "forks": 3,
      "downloads": 167,
      "hn": null,
      "issuesOpen": 0,
      "issuesClosed": 0,
      "prsMerged": 1,
      "commits90": 3,
      "release": "2026-09-16T08:22:03Z",
      "pushed": "2026-09-25T06:47:46Z",
      "growth": null,
      "growthDays": null,
      "archived": false
    },
    "at": "2026-10-31T07:42:38.200Z"
  }
}