opengrok

opengrok is a skill for Claude Code, Codex from IcyHot09/opengrok-mcp-server. It costs 158 tokens per session (5,860 once invoked), scanned A, original, no licence file.

A source-code search and navigation skill for large codebases, including finding definitions, references, remote files, and line history.

In plain words
What is it for?
Use it to locate functions or classes, trace where code is used, read remote source files, and see who last changed a line.
Why use it?
It helps developers understand unfamiliar code without searching through a large repository manually.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it to locate functions or classes, trace where code is used, read remote source files, and see who last changed a line.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/icyhot09/opengrok-mcp-server/opengrok
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add IcyHot09/opengrok-mcp-server --skill opengrok
Clone the repo
git clone --depth 1 https://github.com/IcyHot09/opengrok-mcp-server

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for opengrok

README.md
[![agentmods](https://agentmods.dev/badge/skills/icyhot09/opengrok-mcp-server/opengrok/github.svg)](https://agentmods.dev/skills/icyhot09/opengrok-mcp-server/opengrok)
Your own site
<a href="https://agentmods.dev/skills/icyhot09/opengrok-mcp-server/opengrok"><img src="https://agentmods.dev/badge/skills/icyhot09/opengrok-mcp-server/opengrok/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for opengrok

Your own site · 80×15
<a href="https://agentmods.dev/skills/icyhot09/opengrok-mcp-server/opengrok"><img src="https://agentmods.dev/badge/skills/icyhot09/opengrok-mcp-server/opengrok.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 158 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,860 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00158 $0.05860
Opus 5.5 $0.00063 $0.02344
Sonnet 5.5 $0.00032 $0.01172
Haiku 4.5 $0.00016 $0.00586

Measured 1mo ago against content hash 66ca2cd74d3c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

opengrok scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/opengrok/SKILL.md · 446 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago Changed · +50 lines 66ca2cd74d3c
  2. 1mo ago First seen · 396 lines · 158 tokens per session scan A 74ab6c15065e

Subscribe to this mod's changes

opengrok is a skill published in the GitHub repository IcyHot09/opengrok-mcp-server (10 stars, last pushed 1mo ago), with no licence file. It adds 158 tokens to every session and 5,860 once invoked, about $0.0006 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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