langchain-ai

146 mods across 21 repositories, 254k stars between them.

langgraph-cli

73

langchain-ai/langchain-skills

Skill Claude CodeCodex

INVOKE THIS SKILL when using the langgraph CLI to scaffold, develop, build, or deploy LangGraph applications. Covers langgraph new, dev, build, up, deploy, and langgraph.json configuration.

1.2k 3d ago A 48 tokens

langchain-ai/langchain-skills

Skill Claude CodeCodex

INVOKE THIS SKILL when writing ANY LangGraph code. Covers StateGraph, state schemas, nodes, edges, Command, Send, invoke, streaming, and error handling.

1.2k 3d ago A 43 tokens

langchain-ai/langchain-skills

Skill Claude CodeCodex

INVOKE THIS SKILL when implementing human-in-the-loop patterns, pausing for approval, or handling errors in LangGraph. Covers interrupt(), Command(resume=...), approval/validation workflows, and the 4-tier error handling strategy.

1.2k 3d ago A 55 tokens

langchain-ai/langchain-skills

Skill Claude CodeCodex

INVOKE THIS SKILL when your LangGraph needs to persist state, remember conversations, travel through history, or configure subgraph checkpointer scoping. Covers checkpointers, threadid, time travel, Store, and subgraph persistence modes.

1.2k 3d ago A 55 tokens

langchain-ai/langchain-skills

Skill Claude CodeCodex

Scaffold a minimal local LangGraph agent in Python by following the official quickstart. Use when the user wants to quickly build or try a LangGraph agent locally.

1.2k 3d ago A 40 tokens

langchain-ai/langchain-skills

Skill Claude CodeCodex

Iteratively inspect traces, interview the user, and create LangSmith online evaluators one at a time. Use specifically for creating online evaluators for use within LangSmith -- use "eval-engineering" for Harbor-style online evaluations.

1.2k 3d ago A 54 tokens

managed-deep-agents

80

langchain-ai/langchain-skills

Skill Claude CodeCodex

INVOKE THIS SKILL when building, testing, or deploying Managed Deep Agents in LangSmith with the mda CLI. Walks a user through their first agent end to end — interviewing them about what they want to build, mapping it onto what MDA can actually do, then scaffolding and deploying it. Covers the file-based project…

1.2k 3d ago A 123 tokens

swarm

81

langchain-ai/langchain-skills

Skill Claude CodeCodex

Dispatches many independent items in parallel: create a table, fan out to subagents, aggregate results. One row = one unit of work.

1.2k 3d ago A 32 tokens

linkedin-post

83

langchain-ai/langgraph-101

Skill Claude CodeCodex

Write a LinkedIn post based on research findings or a given topic. Use this skill when asked to create LinkedIn content, professional posts, or thought leadership pieces.

596 27d ago A 36 tokens original MIT

twitter-post

84

langchain-ai/langgraph-101

Skill Claude CodeCodex

Write a Twitter/X post or thread based on research findings or a given topic. Use this skill when asked to create tweets, X posts, or social media threads.

596 27d ago A 36 tokens original MIT

docs-langchain

85

langchain-ai/langchain-aws

MCP server Claude CodeCodexCursor +2

MCP server "docs-langchain", hosted remotely at docs.langchain.com, as configured in langchain-ai/langchain-aws.

346 3d ago A tokens not measured copy · 100% MIT

reference-langchain

86

langchain-ai/langchain-aws

MCP server Claude CodeCodexCursor +2

MCP server "reference-langchain", hosted remotely at reference.langchain.com, as configured in langchain-ai/langchain-aws.

346 3d ago A tokens not measured copy · 100% MIT

langchain-ai/langchain-aws

Instructions file CodexOpenCode

Instructions for langchain-ai/langchain-aws, covering global development guidelines for the langchain monorepo, project architecture and context, langchain-aws structure, key components and langgraph-checkpoint-aws structure.

346 3d ago A 1,740 tokens original MIT

langchain-ai/langchain-aws

Instructions file

Instructions for langchain-ai/langchain-aws, covering global development guidelines for the langchain monorepo, project architecture and context, langchain-aws structure, key components and langgraph-checkpoint-aws structure.

346 3d ago A 1,740 tokens copy · 100% MIT

langsmith-dataset

91

langchain-ai/langsmith-skills

Skill Claude CodeCodex

INVOKE THIS SKILL when creating evaluation datasets, uploading datasets to LangSmith, or managing existing datasets. Covers dataset types (finalresponse, singlestep, trajectory, RAG), CLI management commands, SDK-based creation, and example management. Uses the langsmith CLI tool.

153 15d ago C 61 tokens

langsmith-evaluator

92

langchain-ai/langsmith-skills

Skill Claude CodeCodex

INVOKE THIS SKILL when building evaluation pipelines for LangSmith. Covers three core components: (1) Creating Evaluators - LLM-as-Judge, custom code; (2) Defining Run Functions - how to capture outputs and trajectories from your agent; (3) Running Evaluations - locally with evaluate() or auto-run via LangSmith. Uses…

153 15d ago C 83 tokens

langsmith-trace

93

langchain-ai/langsmith-skills

Skill Claude CodeCodex

INVOKE THIS SKILL when working with LangSmith tracing OR querying traces. Covers adding tracing to applications and querying/exporting trace data. Uses the langsmith CLI tool.

153 15d ago C 40 tokens

langchain-ai/langsmith-mcp-server

Instructions file

Instructions for langchain-ai/langsmith-mcp-server, covering ⚠️ important: keeping this document updated, project overview, what is langsmith?, what is mcp? and architecture deep dive.

131 21d ago A 6,401 tokens original MIT archived

langchain-ai/skills-benchmarks

Instructions file

Instructions for langchain-ai/skills-benchmarks, covering skills project guidelines, python/typescript parity, skill markdown file parity, task structure and benchmark validation principles.

116 14d ago A 1,324 tokens original MIT