codegraph

A persistent map of a codebase that records how files, modules, and named pieces of code relate to one another.

In plain words
What is it for?
Use it to find symbols, trace callers, assess refactoring impact, gather editing context, summarize modules, review pull requests, and investigate bugs.
Why use it?
It answers questions such as who calls a function and what a change may affect without manually searching and reading many files.

Command for Codex

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 commands/codegraph-ai/codegraph-rules-for-agents/codegraph
Clone the repo
git clone --depth 1 https://github.com/codegraph-ai/codegraph-rules-for-agents

Made for: Codex.

Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 579 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original 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 $0.00000 $0.00579
Opus 5 $0.00000 $0.00290
Sonnet 5 $0.00000 $0.00116
Haiku 4.5 $0.00000 $0.00058

Measured yesterday against content hash caf796517fa9, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

codegraph 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.

.codex/prompts/codegraph.md · 44 lines

How it starts

The opening of the file, as written. The whole thing — 44 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CodeGraph — local code intelligence

Persistent semantic graph of your codebase. Resolves references — "who calls X?" is a single tool call, not multi-file grep.

First time? Run codegraph_reindex_workspace once (5-30s). Index persists across sessions.

Top 5 tools (use these first)

When you need Call this NOT this
Who calls function X? codegraph_get_callers grep for the function name
What breaks if I change X? codegraph_analyze_impact reading every importing file
Context for editing a file codegraph_get_edit_context reading 5+ files manually
Find a symbol by name codegraph_symbol_search grep -r across the project
Module structure overview codegraph_get_module_summary ls + reading each file

URI format: file:///absolute/path. Use paths from symbol_search results directly. Compact mode: pass compact: true for shorter output when scanning.

Common workflows

  • PR review: pr_context — one call: blast radius, test gaps, stale docs, reviewers
  • Refactoring: symbol_searchanalyze_impactget_edit_context
  • Bug triage: search_by_errorget_callersget_ai_context(intent: "debug")
  • Onboarding: get_module_summaryfind_entry_pointsget_call_graph

Decision rule

  1. Structural question? (callers, deps, impact) → codegraph tools
  2. Text question? (exact string, regex) → grep/read
  3. Not sure? → Try codegraph_symbol_search first. Empty → run codegraph_reindex_workspace.

More tools

Navigation: get_callees, get_call_graph, get_dependency_graph, traverse_graph, find_by_imports, find_entry_points Quality: analyze_complexity, find_hot_paths, find_circular_deps, find_dead_imports PR review: pr_context (blast radius, test gaps, stale docs, commit hint, reviewers) Docs: index_markdown, search_docs, verify_design, design_gaps, generate_architecture_doc Memory: memory_store (pass agentSource: "codex"), memory_search, memory_context

Read the full file on GitHub · 44 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 · 44 lines · 0 tokens per session scan A caf796517fa9

Subscribe to this mod's changes

codegraph is a command published in the GitHub repository codegraph-ai/codegraph-rules-for-agents (4 stars, last pushed 3mo ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 579 tokens. 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.