LangChain · Structured output and tool calling

Reference for designing and tuning production LLM prompts: few-shot examples, chain-of-thought, structured outputs, templates and system prompts.

wshobson/agents

Routes LangGraph agents with typed decision models that return probabilities, and finds LLM calls that only exist to produce a routing decision.

langchain-ai/langchain-skills

Design and verify tools that AI agents can actually use — for any framework or language (MCP servers, LangChain/LangGraph, function-calling, raw JSON schema; TypeScript, Python, or otherwise).

agentailor/fullstack-langgraph-nextjs-agent

Framework for building LLM-powered applications with agents, chains, and RAG.

Orchestra-Research/AI-Research-SKILLs

Guide to designing n8n AI agents: choosing between Agent, chain, classifier and extractor nodes, wiring model, memory, tools and parser, plus RAG and human review.

czlonkowski/n8n-skills

Build agents with a prebuilt architecture and integrations for any model or tool.

langchain-ai/docs

Work on the actively maintained LangChain v1 agent package: initchatmodel, createagent, structured output, tools, middleware, embeddings initialization, provider routing, and agent runtime…

VectorSpaceLab/AREX-Skill

Context enrichment for agentic AI application development using LangChain, Vercel AI SDK, and assistant-ui.

rsmdt/the-startup

INVOKE THIS SKILL when you need human-in-the-loop approval, custom middleware, or structured output.

langchain-ai/langchain-skills

Expert in designing and building autonomous AI agents. An agent skill from omer-metin/skills-for-antigravity.

omer-metin/skills-for-antigravity

Design n8n AI agents, chains, classifiers, extractors, tool calling, memory, RAG, structured output, and human-review flows.

sickn33/agentic-awesome-skills

Integrates SAP Cloud SDK for AI into JavaScript/TypeScript and Java applications.

secondsky/sap-skills

Decision protocol for wrapping a REST / GraphQL / RPC API as a tool an LLM agent can call.

agentsope/SkillAlchemy

A production-ready Python AI Agent engine using LangChain. An agent skill from kennyzir/7deer_skills.

kennyzir/7deer_skills

Invoke Claude, GPT-4o, and Gemini through LangChain 1.0 without tripping on the content-block, token-accounting, and structured-output quirks that silently break production code.

jeremylongshore/tons-of-skills-marketplace

Build multimodal AI apps with Pixeltable. An agent skill from hashgraph-online/awesome-codex-plugins.

hashgraph-online/awesome-codex-plugins

Builds AI agents using OpenAI Agents SDK with async/await patterns and multi-agent orchestration.

aiskillstore/marketplace

Integrate applications with RouterBase, the OpenAI-compatible model gateway at https://routerbase.com/v1.

aiskillstore/marketplace