langchain-chains ยท diff
git:20260507.313363d to git:20260507.50823d8
5 added, 0 removed. Audit A to A.
---
name: langchain-chains
description: LangChain chain composition including SequentialChain, RouterChain, and LCEL patterns
allowed-tools:
- Read
- Write
- Edit
- Bash
- Glob
- Grep
graph:
domains: [domain:software-engineering]
+ specializations: [specialization:ai-agents-conversational]
+ skillAreas: [skill-area:natural-language-processing]
+ roles: [role:ml-engineer, role:backend-engineer]
+ workflows: [workflow:feature-development, workflow:ml-model-lifecycle]
+ topics: [topic:design-patterns]
---
# LangChain Chains Skill
## Capabilities
- Compose LangChain chains using LCEL (LangChain Expression Language)
- Implement sequential chain patterns
- Design router chains for conditional logic
- Create parallel execution chains
- Handle chain fallbacks and retries
- Implement streaming chains
## Target Processes
- dialogue-flow-design
- chatbot-design-implementation
## Implementation Details
### Chain Patterns
1. **LCEL Pipelines**: Modern composition with | operator
2. **SequentialChain**: Linear chain execution (legacy)
3. **RouterChain**: Conditional routing based on input
4. **RunnableParallel**: Parallel execution branches
5. **RunnableBranch**: Conditional branching
### Configuration Options
- Input/output key mapping
- Error handling strategies
- Retry configuration
- Streaming settings
- Batch processing options
### Best Practices
- Use LCEL for new implementations
- Implement proper input/output schemas
- Add fallback chains for resilience
- Use streaming for long operations
### Dependencies
- langchain-core
- langchain