OpenGrok MCP Server
NPM · OPENGROK-MCP-SERVER · SCANNED SEP 20
MCP server bridging OpenGrok search engine with AI for instant context across massive codebases.
Available components
Deprecated
This server is marked deprecated in the MCP registry.
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →
Supply Chain Security98
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- No install/post-install scripts declared.Pass
- 32 of 109 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency35
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- License check failed: the license (PolyForm-Noncommercial-1.0.0) isn't a recognized OSI-approved license. See how to fix → Fail
- Actively maintained (last published 3 days ago).Pass
- Publishes a security disclosure policy (SECURITY.md).Pass
Schema Quality & AI Usability66
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 681 tokens (~48/item across 14 items; 14 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management97
- Stability observed for 29 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
Tool Safety75
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- 0 of 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation; "batch_search" implies "execute" and declares no destructiveHint at all, which the MCP spec reads as destructive by default. See how to fix → Fail
- An AI judge read all 15 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
How do I install the OpenGrok MCP Server server?
OpenGrok MCP Server runs locally as an npm package, launched with npx -y opengrok-mcp-server. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
npm · opengrok-mcp-server
claude mcp add icyhot09-opengrok -- npx -y opengrok-mcp-server
{
"mcpServers": {
"icyhot09-opengrok": {
"command": "npx",
"args": [
"-y",
"opengrok-mcp-server"
]
}
}
} {
"servers": {
"icyhot09-opengrok": {
"command": "npx",
"args": [
"-y",
"opengrok-mcp-server"
]
}
}
} codex mcp add icyhot09-opengrok -- npx -y opengrok-mcp-server
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"icyhot09-opengrok": {
"type": "local",
"command": [
"npx",
"-y",
"opengrok-mcp-server"
],
"enabled": true
}
}
} openclaw mcp add icyhot09-opengrok --command npx --arg -y --arg opengrok-mcp-server
mcp_servers:
icyhot09-opengrok:
command: "npx"
args: ["-y", "opengrok-mcp-server"] {
"McpServers": {
"icyhot09-opengrok": {
"Transport": "stdio",
"Command": "npx",
"Arguments": [
"-y",
"opengrok-mcp-server"
]
}
}
} assistant mcp add icyhot09-opengrok -t stdio -c npx -a -y opengrok-mcp-server
{
"mcpServers": {
"icyhot09-opengrok": {
"command": "npx",
"args": [
"-y",
"opengrok-mcp-server"
]
}
}
} Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 19 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 90 to 93. That category is still filling its 30-day observation window: 27 days of observed history at the previous scan, 28 at this one. The score rises as the window fills, whether or not the server changes.
- 17 Sept 26 +1
- Security disclosure: fail → pass ▲ functional
- 16 Sept 26 −2
- Stability: pass → 0.83 functional
- 15 Sept 26 0
- Stability: 0.97 → pass security
- 14 Sept 26 +1
- Security disclosure: unverified → fail ▼ functional
- 13 Sept 26 0
- Security disclosure: fail → unverified ▼ functional
- 12 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 87 to 90. That category is still filling its 30-day observation window: 26 days of observed history at the previous scan, 27 at this one. The score rises as the window fills, whether or not the server changes.
- 10 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 80 to 83. That category is still filling its 30-day observation window: 24 days of observed history at the previous scan, 25 at this one. The score rises as the window fills, whether or not the server changes.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 20 Sept 2026 · Analysed npm/opengrok-mcp-server@3.3.5
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | npm |
Background: How many MCP packages publish verified provenance →
Dependencies 109 packages
| Packages resolved | 109 |
|---|---|
| Stale | 32 |
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
batch_search ~33
Execute up to 5 searches in parallel in one call. Always prefer this over multiple search_code calls for the same investigation.
No input parameters.
No output schema declared.
No examples provided.
browse_directory ~16
List files/subdirectories at a path.
No input parameters.
No output schema declared.
No examples provided.
find_file ~19
Find files by name/path pattern across the codebase.
No input parameters.
No output schema declared.
No examples provided.
get_compile_info ~41
Get compilation details for a source file: compiler, include paths, preprocessor defines, and language standard. Requires compile_commands.json to be present in the workspace.
No input parameters.
No output schema declared.
No examples provided.
get_file_annotate ~29
Blame annotations (who changed each line). Use start_line/end_line to limit output.
No input parameters.
No output schema declared.
No examples provided.
get_file_content ~43
Get file contents. ALWAYS pass start_line/end_line — never fetch full files. Use search_code first to find line numbers. For full symbol context use get_symbol_context.
No input parameters.
No output schema declared.
No examples provided.
get_file_history ~15
Commit history for a file.
No input parameters.
No output schema declared.
No examples provided.
get_file_symbols ~42
List all symbols defined in a file: functions, classes, structs, macros with line numbers and signatures. Use this to understand a file's structure before reading it.
No input parameters.
No output schema declared.
No examples provided.
get_symbol_context ~37
Complete symbol investigation in one call: definition with context + corresponding header + references. Use this first for any unknown C++ symbol or function.
No input parameters.
No output schema declared.
No examples provided.
index_health ~25
OpenGrok server connection status and diagnostics. Call if results seem stale or incomplete.
No input parameters.
No output schema declared.
No examples provided.
list_projects ~15
List indexed OpenGrok projects.
No input parameters.
No output schema declared.
No examples provided.
search_and_read ~37
Search and return matching code with surrounding context in one call. Use instead of search_code + get_file_content. Never fetches full files.
No input parameters.
No output schema declared.
No examples provided.
search_code ~53
Search OpenGrok. Types: full (text), defs (definitions), refs (references), path (filenames), hist (commit messages). Prefer defs/refs for known symbol names. Use batch_search for multiple queries.
No input parameters.
No output schema declared.
No examples provided.
search_suggest ~17
Autocomplete suggestions for a partial query.
No input parameters.
No output schema declared.
No examples provided.
What is the OpenGrok MCP Server server?
OpenGrok MCP Server is listed in the public MCP registry as io.github.IcyHot09/opengrok. MCP server bridging OpenGrok search engine with AI for instant context across massive codebases. This page covers its npm package (opengrok-mcp-server).
Is the OpenGrok MCP Server server safe to use?
OpenGrok MCP Server scores 78 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 20 September 2026. It declares no install or post-install scripts. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the OpenGrok MCP Server server expose?
OpenGrok MCP Server exposes 14 tools: search_code, find_file, get_file_content, get_file_history, browse_directory, and 9 more. Their descriptions and schemas cost roughly 422 tokens of context every time the server is loaded.
Is the OpenGrok MCP Server server still maintained?
OpenGrok MCP Server is marked deprecated in the MCP registry. We last reached this channel on 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.
What licence is the OpenGrok MCP Server server under?
OpenGrok MCP Server declares the PolyForm-Noncommercial-1.0.0 licence, which is not on the OSI-approved list. Read the terms before using it at work, and note this covers the source only, not the cost of any service it calls.