# Langgraph Subgraph

> Subgraph composition and modular workflow design for LangGraph

- Skill: `a5c-ai/langgraph-subgraph` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add a5c-ai/langgraph-subgraph`
- Raw SKILL.md: https://api.skillmd.com/api/skills/a5c-ai/langgraph-subgraph/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Productivity
- Author: a5c-ai (https://skillmd.com/u/a5c-ai)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/a5c-ai/langgraph-subgraph

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# LangGraph Subgraph Skill

## Capabilities

- Design modular subgraph components
- Compose subgraphs into parent workflows
- Handle state mapping between graphs
- Implement subgraph reusability patterns
- Design subgraph interfaces and contracts
- Handle subgraph error isolation

## Target Processes

- multi-agent-system
- langgraph-workflow-design

## Implementation Details

### Subgraph Patterns

1. **Compiled Subgraphs**: Pre-compiled reusable components
2. **State Mapping**: Input/output state transformation
3. **Nested Subgraphs**: Multi-level graph composition
4. **Parallel Subgraphs**: Concurrent subgraph execution

### Configuration Options

- State schema alignment
- Input/output key mapping
- Error propagation settings
- Subgraph checkpoint inheritance
- Timeout configurations

### Best Practices

- Clear subgraph interfaces
- Minimal state coupling
- Proper error boundaries
- Reusable component design
- Documentation for subgraph contracts

### Dependencies

- langgraph