code-graph-cli-3.0.2 is not a library.

code-graph

High-performance code intelligence engine that indexes TypeScript, JavaScript, Rust, Python, and Go codebases into a queryable dependency graph. Built in Rust, designed for AI agents.

Gives Claude Code direct access to your codebase's structure via hooks-based integration -- no source file reading needed. One code-graph setup command installs transparent PreToolUse hooks that auto-approve CLI calls and enrich search queries with structural graph data.

Features

Multi-language parsing -- TypeScript, TSX, JavaScript, JSX, Rust, Python, and Go via tree-sitter with full symbol extraction (functions, classes, interfaces, types, enums, components, methods, properties, structs, traits, impl blocks, macros, pub visibility, async/sync functions, decorators, type aliases, struct tags)
Python parsing -- functions (sync/async), classes, variables, type aliases (PEP 695), decorators with framework detection (Flask, FastAPI, Django)
Go parsing -- functions, methods, type specs, struct tags, //go: directives as decorators, visibility by export convention, go.mod resolution
Decorator/attribute extraction -- unified across all 5 languages with framework inference (NestJS, Flask, FastAPI, Actix, Angular)
Dependency graph -- file-level and symbol-level edges: imports, calls, extends, implements, type references, has-decorator, child-of, embeds
Import resolution -- TypeScript path aliases (tsconfig.json), barrel files (index.ts re-exports), monorepo workspaces, Rust crate-root module resolution with Cargo workspace discovery, Python package resolution, Go module resolution
25 CLI commands -- find definitions, trace references, blast radius analysis, circular dependency detection, 360-degree symbol context, project statistics, graph export, file structure, file summaries, import analysis, dead code detection, clone detection, graph diff, decorator search, clustering, call chain tracing, rename planning, diff impact, project registry management, daemon control, hooks setup
Hooks-based Claude Code integration -- code-graph setup installs PreToolUse hooks that transparently intercept tool calls, auto-approve CLI invocations, and enrich Grep/Glob searches with structural graph data
Background daemon -- code-graph daemon start launches a persistent background process that watches for file changes and keeps the graph index up to date automatically
Multi-project registry -- code-graph project add registers project aliases for cross-project queries with --project flag on any query command
Interactive web UI -- code-graph serve launches an Axum backend + Svelte frontend with WebGL graph visualization, file tree, code panel, search, and real-time WebSocket updates
RAG conversational agent -- hybrid retrieval (structural graph + vector embeddings), multi-provider LLM support (Claude, OpenAI, Ollama), session memory, source citations
BM25 hybrid search -- tiered pipeline: exact match, trigram fuzzy, BM25, Reciprocal Rank Fusion
Confidence scoring -- High/Medium/Low confidence tiers on impact analysis based on graph distance
Token-optimized output -- compact prefix-free format with context-aware next-step hints, designed for AI agent consumption (60-90% savings per session)
Trigram fuzzy matching -- Jaccard similarity for typo-tolerant symbol search with score-ranked suggestions
Clone detection -- clones finds structurally similar code via signature hashing (symbol kind, body size, edge counts, decorators)
Dead code detection -- dead-code identifies unreferenced symbols with entry-point exclusions
Graph snapshot/diff -- create named snapshots and compare current graph state against baselines
Section-scoped context -- context with targeted sections for 60-80% token savings per query
Graph export -- DOT and Mermaid formats at symbol, file, or package granularity
Non-parsed file awareness -- config files, docs, and assets visible in the graph
Project auto-detection -- most commands auto-detect the project root from the current working directory when no path is given
File watcher -- incremental re-indexing on file changes with 75ms debounce
Disk cache -- bincode serialization for instant cold starts
Feature flags -- --features web for web UI, --features rag for RAG agent

Install

cargo install code-graph-cli

This installs the code-graph binary to ~/.cargo/bin/.

To include the web UI or RAG agent, enable feature flags:

cargo install code-graph-cli --features web    # Web UI
cargo install code-graph-cli --features rag    # RAG agent (includes web)

From source

git clone https://github.com/MonsieurBarti/code-graph-ai.git
cd code-graph-ai
cargo install --path .

Build manually

git clone https://github.com/MonsieurBarti/code-graph-ai.git
cd code-graph-ai
cargo build --release
# Binary at target/release/code-graph

Requires Rust 1.85+ (edition 2024). No runtime dependencies -- tree-sitter grammars are statically linked.

Quick start

# Set up Claude Code integration (installs hooks)
code-graph setup

# Index a project
code-graph index .

# Find a symbol
code-graph find "UserService" .

# What breaks if I change this?
code-graph impact "DatabaseConfig" .

# Start the background daemon for live re-indexing
code-graph daemon start

# Launch the interactive web UI
code-graph serve

# Find structurally similar code (clone detection)
code-graph clones .

# Export dependency graph as Mermaid at package granularity
code-graph export . --format mermaid --granularity package

# Create a named graph snapshot for later comparison
code-graph snapshot create baseline .

CLI reference

Usage: code-graph <COMMAND>

Commands:
  index         Index a project directory
  find          Find a symbol's definition (file:line location)
  refs          Find all references to a symbol across the codebase
  impact        Show the transitive blast radius of changing a symbol
  circular      Detect circular dependencies in the import graph
  stats         Project statistics overview
  context       360-degree view of a symbol: definition, references, callers, callees
  watch         Start a file watcher for incremental re-indexing
  export        Export dependency graph to DOT or Mermaid format
  snapshot      Create, list, or delete named graph snapshots
  setup         Install Claude Code hooks for transparent integration
  serve         Launch the interactive web UI (requires --features web)
  structure     Show file/directory tree with symbol outlines
  file-summary  Summarize a single file: role, symbols, imports, dependents
  imports       List all imports of a file, categorized by type
  clones        Detect structurally similar code (clone detection)
  dead-code     Detect dead code: unreachable files and unreferenced symbols
  diff          Compare two graph snapshots and show structural differences
  diff-impact   Analyze impact of git-changed files on the dependency graph
  decorators    Find symbols by decorator/attribute pattern
  clusters      Discover functional clusters via graph analysis
  flow          Trace data/call flow paths between two symbols
  project       Manage the project registry (add, remove, list, show)
  daemon        Manage the background daemon (start, stop, status)
  rename        Plan a symbol rename with impact analysis

index

Index a project, discovering and parsing all TypeScript/JavaScript, Rust, Python, and Go files.

code-graph index . --verbose    # Print each discovered file
code-graph index . --json       # Output as JSON

find

Find symbol definitions by name or regex pattern. Supports trigram fuzzy matching for typo-tolerant search.

code-graph find "UserService" .
code-graph find "User.*Service" . -i            # Case-insensitive regex
code-graph find "authenticate" . --kind function # Filter by kind
code-graph find "Button" . --file src/components # Scope to directory
code-graph find "Config" --project my-api        # Query a registered project

Symbol kinds: function, class, interface, type, enum, variable, component, method, property, struct, trait, impl, macro

refs

Find all files and call sites that reference a symbol.

code-graph refs "UserService" .
code-graph refs "useAuth" . --format table    # Human-readable table

impact

Show the transitive blast radius -- everything affected if a symbol changes.

code-graph impact "DatabaseConfig" .
code-graph impact "API" . --tree              # Hierarchical dependency chain

circular

Detect circular dependency cycles in the import graph (file-level).

code-graph circular .
code-graph circular . --format json

stats

Project overview: file count, symbol breakdown by kind, import summary.

code-graph stats .
code-graph stats . --format json

context

360-degree view combining definition, references, callers, and callees. Supports section scoping for targeted queries with 60-80% token savings.

code-graph context "Logger" .

watch

Start a standalone file watcher that re-indexes incrementally on changes.

code-graph watch .

export

Export the dependency graph to DOT or Mermaid format at symbol, file, or package granularity.

code-graph export . --format dot --granularity symbol
code-graph export . --format mermaid --granularity package
code-graph export . --format dot --granularity file --max-nodes 200 --max-edges 500

snapshot

Create, list, or delete named graph snapshots for change tracking and comparison.

code-graph snapshot create baseline .    # Create a snapshot named "baseline"
code-graph snapshot list .               # List all snapshots
code-graph snapshot delete baseline .    # Delete the "baseline" snapshot

setup

Install Claude Code hooks for transparent code-graph integration.

code-graph setup              # Install hooks in .claude/ (project-level)
code-graph setup --global     # Install hooks in ~/.claude/ (all projects)
code-graph setup --uninstall  # Remove code-graph hooks and permissions

See Claude Code integration for details on what this configures.

serve

Launch the interactive web UI with graph visualization.

code-graph serve                        # Default port 7070
code-graph serve --port 8080            # Custom port
code-graph serve --ollama               # Enable Ollama for local RAG

Requires building with --features web. Add --features rag for the conversational agent.

structure

Show the file/directory tree with symbol counts and outlines.

code-graph structure .                          # Full tree (depth 3)
code-graph structure . --path src/query --depth 5

file-summary

Compact summary of a single file: role, symbols, imports, and dependents.

code-graph file-summary src/main.rs .

imports

List all imports of a file, categorized by type (internal, external, builtin).

code-graph imports src/lib.rs .

clones

Detect structurally similar code via signature hashing. Groups symbols with identical structural fingerprints (kind, body size, edge counts, decorator count).

code-graph clones .
code-graph clones . --min-group 3          # Only groups with 3+ clones
code-graph clones . --scope src/query      # Scope to a directory
code-graph clones --project my-api         # Query a registered project

dead-code

Detect unreferenced symbols and unreachable files with entry-point exclusions.

code-graph dead-code .
code-graph dead-code . --scope src/utils

diff

Compare two graph snapshots and show structural differences (added/removed symbols, changed edges).

code-graph diff . --from baseline
code-graph diff . --from v1 --to v2

diff-impact

Analyze the dependency graph impact of git-changed files. Takes a git ref to diff against.

code-graph diff-impact HEAD~1 .
code-graph diff-impact main .

decorators

Find symbols by decorator/attribute pattern across all languages.

code-graph decorators "@Component" .
code-graph decorators "derive(Debug)" . --language rust
code-graph decorators "@app.route" . --framework fastapi

clusters

Discover functional clusters (groups of highly-coupled symbols) via graph analysis.

code-graph clusters .
code-graph clusters . --scope src/query

flow

Trace call/data flow paths between two symbols.

code-graph flow "parse_file" "build_graph" .
code-graph flow "handleRequest" "sendResponse" . --max-paths 5

project

Manage the multi-project registry for cross-project queries.

code-graph project add my-api /path/to/api      # Register with alias
code-graph project add frontend /path/to/web     # Register another
code-graph project list                          # List all registered
code-graph project show my-api                   # Show details
code-graph project remove my-api                 # Unregister

Once registered, use --project on any query command:

code-graph find "UserService" --project my-api
code-graph impact "Config" --project frontend

daemon

Manage the background daemon that watches for file changes and keeps the index up to date.

code-graph daemon start           # Start for current project
code-graph daemon start /path     # Start for specific project
code-graph daemon status          # Check if running
code-graph daemon stop            # Stop the daemon

rename

Plan a symbol rename: lists all files and lines that reference the symbol, with the proposed changes.

code-graph rename "oldName" "newName" .
code-graph rename "Config" "AppConfig" --project my-api

Output formats

All query commands support --format:

Format	Description
`compact`	One-line-per-result, token-optimized (default)
`table`	Human-readable columns with ANSI colors
`json`	Structured JSON for programmatic use

Claude Code integration

code-graph integrates with Claude Code via PreToolUse hooks -- shell scripts that run before Claude executes tool calls. This approach is transparent, requires no background server, and works with any Claude Code version.

How it works

code-graph setup installs two hook scripts into .claude/hooks/:
- codegraph-pretool-bash.sh -- intercepts Bash tool calls. When the command starts with code-graph, the hook auto-approves it (no permission prompt). All other commands pass through untouched.
- codegraph-pretool-search.sh -- intercepts Grep and Glob tool calls. When the search pattern looks like a code symbol (PascalCase, snake_case, camelCase), the hook enriches the response with code-graph find results as additional context. String literals, file paths, TODOs, and regex patterns pass through to native search.
Setup also configures .claude/settings.json:
- Adds hook entries under hooks.PreToolUse
- Adds Bash(code-graph *) to permissions.allow for auto-approval
- Cleans up any stale configuration from previous versions
The result: Claude Code transparently uses code-graph for structural queries while keeping native Grep/Glob for text searches. No manual tool selection needed.

Setup

# Project-level (recommended): hooks in .claude/hooks/
code-graph setup

# Global: hooks in ~/.claude/hooks/ (available in all projects)
code-graph setup --global

# Remove hooks and permissions
code-graph setup --uninstall

Recommended CLAUDE.md instructions

To maximize Claude Code's use of code-graph for navigation, add the following to your project's CLAUDE.md:

## Code navigation -- MANDATORY

NEVER use Grep or Glob to find symbol definitions, trace references, or analyze dependencies.
ALWAYS use code-graph CLI commands instead -- they are faster, more accurate, and understand the full AST.

| Task | Command | NOT this |
|------|---------|----------|
| Find where something is defined | `code-graph find <symbol>` | ~~Grep for `class X`, `function X`, `fn X`~~ |
| Find what uses/imports something | `code-graph refs <symbol>` | ~~Grep for `import`, `require`, identifier~~ |
| Understand a symbol fully | `code-graph context <symbol>` | ~~Multiple Grep + Read calls~~ |
| Check what breaks if I change X | `code-graph impact <symbol>` | ~~Manual file-by-file tracing~~ |
| Detect circular deps | `code-graph circular` | ~~Grep for import cycles~~ |
| Project overview | `code-graph stats` | ~~Glob + count files~~ |

Use Read/Grep/Glob ONLY for:
- Reading full file contents before editing
- Searching for string literals, comments, TODOs, error messages
- Non-structural text searches that have nothing to do with code navigation

Configuration

Optional code-graph.toml in your project root:

# Additional path patterns to exclude from indexing (beyond .gitignore and node_modules).
exclude = ["vendor/", "dist/", "build/"]

# Impact analysis thresholds for risk tier classification.
[impact]
high_threshold = 20     # Files above this count are HIGH risk (default: 20)
medium_threshold = 5    # Files above this count are MEDIUM risk (default: 5)

By default, code-graph respects .gitignore patterns and always excludes node_modules/ and target/.

How it works

Walk -- discovers TS/JS, Rust, Python, and Go files respecting .gitignore and exclusion rules
Parse -- tree-sitter extracts symbols, imports, exports, and relationships from each file. TypeScript/JavaScript parsing covers functions, classes, interfaces, type aliases, enums, and components. Rust parsing covers functions, structs, enums, traits, impl blocks, type aliases, constants, statics, and macro definitions with visibility tracking. Python parsing covers functions (sync/async), classes, variables, type aliases (PEP 695), and decorators. Go parsing covers functions, methods, type specs, struct tags, and //go: directives.
Resolve -- maps import specifiers to actual files. For TypeScript/JavaScript: oxc_resolver handles path aliases, barrel files, and workspaces. For Rust: crate-root module tree walk with use-path classification (crate/super/self/external/builtin) and Cargo workspace discovery. For Python: package resolution with __init__.py detection and relative imports. For Go: go.mod module resolution with package path mapping.
Build graph -- constructs a petgraph with file nodes, symbol nodes, and typed edges (imports, calls, extends, implements, type references, has-decorator, child-of, embeds)
Cache -- serializes the graph to disk with bincode for fast reloads
Query -- traverses the graph to answer structural questions without reading source files
Watch -- monitors filesystem events and incrementally updates the graph (re-parses only changed files)

Project stats

Metric	Value
Languages supported	TypeScript, JavaScript, Rust, Python, Go
Lines of Rust code	~39,000
Tests	551
CLI commands	25
Rust edition	2024
Binary size	~12 MB (static, zero runtime deps)

License

MIT

code-graph-cli 3.0.2

code-graph

Features

Install

From source

Build manually

Quick start

CLI reference

index

find

refs

impact

circular

stats

context

watch

export

snapshot

setup

serve

structure

file-summary

imports

clones

dead-code

diff

diff-impact

decorators

clusters

flow

project

daemon

rename

Output formats

Claude Code integration

How it works

Setup

Recommended CLAUDE.md instructions

Configuration

How it works

Project stats

License