code-graph

A searchable map of a codebase built from its program structure. It helps locate symbols such as functions and classes, trace dependencies, and estimate which code may be affected by a change.

In plain words
What is it for?
Use it to find functions or other symbols, inspect dependency paths, and check the likely blast radius of a feature, bug fix, or refactor.
Why use it?
It reduces the need to search files one by one when planning or reviewing a change. You can see related code and likely impact before editing.

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/alinaqi/maggy/code-graph
Any agent
npx skills add alinaqi/maggy --skill code-graph
Clone the repo
git clone --depth 1 https://github.com/alinaqi/maggy

Made for: Claude Code, Codex.

Per session 27 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,810 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 $0.00027 $0.01810
Opus 5 $0.00014 $0.00905
Sonnet 5 $0.00005 $0.00362
Haiku 4.5 $0.00003 $0.00181

Measured 2d ago against content hash 21b68aba71b9, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

code-graph 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 2d 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/code-graph/SKILL.md · 207 lines

How it starts

The opening of the file, as written. The whole thing — 207 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Code Graph Skill

Purpose: Use the code graph (codebase-memory-mcp) for sub-millisecond symbol lookup, function search, dependency analysis, and blast radius detection. This replaces brute-force grep and file reading for code navigation.


Core Principle

Graph first, file second. Before reading files or grepping, query the code graph. Only read full files when you need to modify them or need context beyond what the graph provides.

Consider graph when planning. When planning any change — feature, refactor, bug fix — start by querying the graph to understand scope, dependencies, and blast radius. This applies to thinking and planning phases, not just implementation. Grep is still the right tool for searching string literals, log messages, config values, and content that lives outside code structure.

┌────────────────────────────────────────────────────────────────┐
│  GRAPH FIRST, FILE SECOND                                      │
│  ─────────────────────────────────────────────────────────────│
│  The code graph indexes your entire codebase as a persistent   │
│  knowledge graph. Claude queries it via MCP for instant         │
│  symbol lookup, dependency chains, and blast radius — instead   │
│  of reading hundreds of files.                                 │
│                                                                │
│  14 MCP tools │ 64 languages │ sub-ms queries │ zero deps      │
│  ~99% fewer tokens for navigation vs brute-force file reads    │
├────────────────────────────────────────────────────────────────┤
│  AUTO-UPDATED                                                  │
│  ─────────────────────────────────────────────────────────────│
│  File watcher keeps graph in sync. Post-commit hook ensures    │
│  freshness. No manual rebuild needed.                          │
└────────────────────────────────────────────────────────────────┘

When to Use Graph vs Direct Read

Task Use Graph Tool Use Direct Read?
Find function/class definition search_graph No
Get function signature + docs get_code_snippet No
Find all callers of a function trace_call_path No
Trace dependency chain query_graph No
Determine blast radius of change detect_changes No
Understand project architecture get_architecture No
Search for code patterns search_code No
Read full implementation to modify search_graph to locate, then Read file Yes
Understand business logic context get_code_snippet for overview, then Read Yes

Read the full file on GitHub · 207 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. 2d ago First seen · 207 lines · 27 tokens per session scan A 21b68aba71b9

Subscribe to this mod's changes

code-graph is a skill published in the GitHub repository alinaqi/maggy (705 stars, last pushed 15d ago), licensed MIT. It adds 27 tokens to every session and 1,810 once invoked, about $0.0001 per session on Opus 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 2026-08-30.

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