Agent skill

langchain-chains

LangChain chain composition including SequentialChain, RouterChain, and LCEL patterns

Stars 514
Forks 31

Install this agent skill to your Project

npx add-skill https://github.com/a5c-ai/babysitter/tree/main/library/specializations/ai-agents-conversational/skills/langchain-chains

SKILL.md

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

Expand your agent's capabilities with these related and highly-rated skills.

a5c-ai/babysitter

gsd-tools

Central utility skill for GSD operations. Provides config parsing, slug generation, timestamps, path operations, and orchestrates calls to other specialized skills. Acts as the unified entry point that the original gsd-tools.cjs provided via its lib/ modules (commands, config, core, init).

514 31
Explore
a5c-ai/babysitter

model-profile-resolution

Resolve model profile (quality/balanced/budget) at orchestration start and map agents to specific models. Enables cost/quality tradeoffs by selecting appropriate AI models for each agent role.

514 31
Explore
a5c-ai/babysitter

verification-suite

Plan structure validation, phase completeness checks, reference integrity verification, and artifact existence confirmation. Provides the structured verification layer ensuring GSD artifacts are well-formed and complete.

514 31
Explore
a5c-ai/babysitter

state-management

STATE.md reading, writing, and field-level updates. Provides cross-session state persistence via .planning/STATE.md with structured fields for current task, completed phases, blockers, decisions, and quick tasks.

514 31
Explore
a5c-ai/babysitter

git-integration

Git commit patterns, formats, and conventions for GSD methodology. Provides atomic commits per task, structured commit messages, planning file commits, branch management, and milestone tag operations.

514 31
Explore
a5c-ai/babysitter

frontmatter-parsing

YAML frontmatter parsing and manipulation for .planning/ documents. Provides read, write, update, query, and validation operations on frontmatter blocks in GSD markdown artifacts.

514 31
Explore

Didn't find tool you were looking for?

Be as detailed as possible for better results