codehub-guide

A reference guide for OpenCodeHub, a system that indexes a codebase so an assistant can query its structure, symbols, and execution flows. It documents the available tools, resources, and database schema.

In plain words
What is it for?
Use it to find available OpenCodeHub tools, confirm indexed repositories, check index freshness, query the code graph, and choose a workflow for a specific investigation.
Why use it?
It gives you the starting point and workflow for answering code-understanding, debugging, refactoring, and pull-request questions with OpenCodeHub.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/theagenticguy/opencodehub/codehub-guide
Any agent
npx skills add theagenticguy/opencodehub --skill codehub-guide
Clone the repo
git clone --depth 1 https://github.com/theagenticguy/opencodehub

Made for: Claude Code, Codex.

Per session 54 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,475 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 86% copy Near-identical to another mod 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 $0.00054 $0.03475
Opus 5 $0.00027 $0.01737
Sonnet 5 $0.00011 $0.00695
Haiku 4.5 $0.00005 $0.00347

Measured yesterday against content hash d229389f1118, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

codehub-guide 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 yesterday.

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.

Origin

This is a copy

86% identical to opencodehub-guide — 126 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

plugins/opencodehub/skills/codehub-guide/SKILL.md · 248 lines

How it starts

The opening of the file, as written. The whole thing — 248 lines — stays where its author put it; the contents beside it link to each section on GitHub.

OpenCodeHub Guide

Quick reference for every OpenCodeHub MCP tool, MCP resource, and the single-file store.sqlite schema.

Always Start Here

For any task that touches code understanding, debugging, impact analysis, refactoring, or PR review:

  1. Call mcp__codehub__list_repos — confirm the repo is indexed and pick a repo name.
  2. Read codehub://repo/{name}/context — codebase stats and a staleness envelope.
  3. Match the task to a skill below and follow that skill's checklist.

If the context envelope reports the index is stale, run codehub analyze in the terminal first. If it says weights are missing, run codehub setup --embeddings to fetch the 320d F2LLM-v2-80M ONNX weights.

Skills · analysis

Task Skill to read
Understand architecture / "How does X work?" codehub-exploring
Blast radius / "What breaks if I change X?" codehub-impact-analysis
Trace bugs / "Why is X failing?" codehub-debugging
Plan a rename / extract / move (analysis only) codehub-refactoring
Review a PR / "Is this safe to merge?" codehub-pr-review
Tools, resources, schema reference codehub-guide (here)

Skills · artifact factory (spec 001)

These skills produce committed Markdown artifacts — the durable output Principal engineers ship. See ADR 0007 for the scope rationale.

Task Skill to invoke Trigger phrase
Generate the full doc tree (single or group) codehub-document "document this repo", "regenerate architecture docs"
Draft a PR description from the current diff codehub-pr-description "write the PR description", "summarize this branch"
Write an onboarding guide with reading order codehub-onboarding "write ONBOARDING.md", "what should a new hire read first"
Map inter-repo contracts for a group codehub-contract-map "map the contracts", "show the contract matrix for "
Build a deterministic 9-item code-pack BOM codehub-code-pack "pack this repo for an LLM", "deterministic code pack", "pack the platform group"
Draft an ADR (P1 — not yet shipped) codehub-adr (P1 backlog)

Read the full file on GitHub · 248 lines

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. yesterday First seen · 248 lines · 54 tokens per session scan A d229389f1118

Subscribe to this mod's changes

codehub-guide is a skill published in the GitHub repository theagenticguy/opencodehub (3 stars, last pushed 20d ago), licensed Apache-2.0. It adds 54 tokens to every session and 3,475 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 86% identical to opencodehub-guide, differing in 126 lines, and is treated as a copy.

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