rust-call-graph
Visualize Rust function call graphs using LSP. Triggers on: /call-graph, call hierarchy, who calls, what calls, 调用图, 调用关系, 谁调用了, 调用了谁
- Installs
- 3.2K
- Last 24h
- +18
- Trending rank
- #6323
- Security
- Not audited
Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/actionbook/rust-skills --skill rust-call-graph- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads rust-call-graph automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
Rust Call Graph
Visualize function call relationships using LSP call hierarchy.
Usage
/rust-call-graph <function_name> [--depth N] [--direction in|out|both]
Options:
--depth N: How many levels to traverse (default: 3)--direction:in(callers),out(callees),both
Examples:
/rust-call-graph process_request- Show both callers and callees/rust-call-graph handle_error --direction in- Show only callers/rust-call-graph main --direction out --depth 5- Deep callee analysis
LSP Operations
1. Prepare Call Hierarchy
Get the call hierarchy item for a function.
LSP(
operation: "prepareCallHierarchy",
filePath: "src/handler.rs",
line: 45,
character: 8
)
2. Incoming Calls (Who calls this?)
LSP(
operation: "incomingCalls",
filePath: "src/handler.rs",
line: 45,
character: 8
)
3. Outgoing Calls (What does this call?)
LSP(
operation: "outgoingCalls",
filePath: "src/handler.rs",
line: 45,
character: 8
)
Workflow
User: "Show call graph for process_request"
│
▼
[1] Find function location
LSP(workspaceSymbol) or Grep
│
▼
[2] Prepare call hierarchy
LSP(prepareCallHierarchy)
│
▼
[3] Get incoming calls (callers)
LSP(incomingCalls)
│
▼
[4] Get outgoing calls (callees)
LSP(outgoingCalls)
│
▼
[5] Recursively expand to depth N
│
▼
[6] Generate ASCII visualization
Output Format
Incoming Calls (Who calls this?)
## Callers of `process_request`
main
└── run_server
└── handle_connection
└── process_request ◄── YOU ARE HERE
Outgoing Calls (What does this call?)
## Callees of `process_request`
process_request ◄── YOU ARE HERE
├── parse_headers
│ └── validate_header
├── authenticate
│ ├── check_token
│ └── load_user
├── execute_handler
│ └── [dynamic dispatch]
└── send_response
└── serialize_body
Bidirectional (Both)
## Call Graph for `process_request`
┌─────────────────┐
│ main │
└────────┬────────┘
│
┌────────▼────────┐
│ run_server │
└────────┬────────┘
│
┌────────▼────────┐
│handle_connection│
└────────┬────────┘
│
┌────────────────────┼────────────────────┐
│ │ │
┌───────▼───────┐ ┌───────▼───────┐ ┌───────▼───────┐
│ parse_headers │ │ authenticate │ │send_response │
└───────────────┘ └───────┬───────┘ └───────────────┘
│
┌───────┴───────┐
│ │
┌──────▼──────┐ ┌──────▼──────┐
│ check_token │ │ load_user │
└─────────────┘ └─────────────┘
Analysis Insights
After generating the call graph, provide insights:
## Analysis
**Entry Points:** main, test_process_request
**Leaf Functions:** validate_header, serialize_body
**Hot Path:** main → run_server → handle_connection → process_request
**Complexity:** 12 functions, 3 levels deep
**Potential Issues:**
- `authenticate` has high fan-out (4 callees)
- `process_request` is called from 3 places (consider if this is intentional)
Common Patterns
| User Says | Direction | Use Case |
|---|---|---|
| "Who calls X?" | incoming | Impact analysis |
| "What does X call?" | outgoing | Understanding implementation |
| "Show call graph" | both | Full picture |
| "Trace from main to X" | outgoing | Execution path |
Visualization Options
| Style | Best For |
|---|---|
| Tree (default) | Simple hierarchies |
| Box diagram | Complex relationships |
| Flat list | Many connections |
| Mermaid | Export to docs |
Mermaid Export
graph TD
main --> run_server
run_server --> handle_connection
handle_connection --> process_request
process_request --> parse_headers
process_request --> authenticate
process_request --> send_response
Related Skills
| When | See |
|---|---|
| Find definition | rust-code-navigator |
| Project structure | rust-symbol-analyzer |
| Trait implementations | rust-trait-explorer |
| Safe refactoring | rust-refactor-helper |
FAQ
What does the rust-call-graph skill do?
Visualize Rust function call graphs using LSP. Triggers on: /call-graph, call hierarchy, who calls, what calls, 调用图, 调用关系, 谁调用了, 调用了谁
How do I install rust-call-graph?
Run npx skills add https://github.com/actionbook/rust-skills --skill rust-call-graph in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/rust-call-graph/ (personal) or .claude/skills/rust-call-graph/ (project).
Which AI agents can use rust-call-graph?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is rust-call-graph safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains rust-call-graph?
It is published by actionbook in actionbook/rust-skills. It has 3,196 recorded installs.
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