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Skill
/langchain-chains
LangChain chain composition including SequentialChain, RouterChain, and LCEL patterns
Claude Code
$ npx -y skills add a5c-ai/babysitter --skill langchain-chains --agent claude-code
Codex
$ npx skills add a5c-ai/babysitter --skill langchain-chains -a codex -y
Cursor
$ npx skills add a5c-ai/babysitter --skill langchain-chains -a cursor -y
Gemini CLI
$ npx skills add a5c-ai/babysitter --skill langchain-chains -a gemini-cli -y
GitHub Copilot
$ npx skills add a5c-ai/babysitter --skill langchain-chains -a github-copilot -y
OpenCode
$ npx skills add a5c-ai/babysitter --skill langchain-chains -a opencode -y
Windsurf
$ npx skills add a5c-ai/babysitter --skill langchain-chains -a windsurf -y
SKILL.md
langchain-chains.SKILL.mdname: 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:chain-of-thought-multistep-orchestration, skill-area:tool-service-integration-agents]
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
Read more
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:chain-of-thought-multistep-orchestration, skill-area:tool-service-integration-agents] 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
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Questions about langchain-chains.
- Which coding agents can use langchain-chains?
- langchain-chains installs in Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot, OpenCode and Windsurf with the skills CLI, using each agent's flag shown on this page. Flowy's auto-invocation, which fires a skill when your prompt matches, runs in Claude Code only.