Python · Building AI agents

Patterns and tested examples for building agents with Pydantic AI: tools, capabilities, structured output, dependency injection, hooks, YAML specs, streaming and testing.

docling-project/docling

Teaches the Swarms Python framework: the Agent class, tools, loops, memory and multi-agent structures such as sequential, concurrent and graph workflows.

kyegomez/swarms

Adds optional capabilities to Pydantic AI agents from pydantic-ai-harness, led by Code Mode, which runs many tool calls as one sandboxed Python script.

pydantic/pydantic-ai

Creates a new sample agent in the ADK Python repository — the sample directory, its agent.py, and its README.md — following the conventions the existing samples already use.

google/adk-python

Answers questions about Mobilerun, the LLM-agent framework for automating Android and iOS devices, by pointing the agent to the right page of its v5 documentation.

droidrun/mobilerun

Map of the agent-squad Python framework for async multi-agent orchestration: which agent, classifier, storage and tool provider to pick, and the pitfalls to avoid.

2FastLabs/agent-squad

Reference for building on Microsoft Foundry with the azure-ai-projects Python SDK: project clients, versioned agents, evaluations, connections, datasets and indexes.

microsoft/skills

Add a new self-contained example agent under examples/. An agent skill from GetBindu/Bindu.

GetBindu/Bindu

Helps instrument a custom Python or TypeScript agent to record events for Failproof AI, verify what gets written, and run an evaluator worker that scores the runs.

FailproofAI/failproofai

Polymarket integration for prediction market trading on Polygon.

Polymarket/agent-skills

Guides Stripe integration decisions — API selection (Checkout Sessions vs PaymentIntents), Connect platform setup (Accounts v2, controller properties), billing/subscriptions, Treasury financial…

kanchengw/cnllm

Scans Python agent code for framework imports and recommends the matching Omnigent executor type, or says when the framework is not natively supported yet.

omnigent-ai/omnigent

Provides reference guides and Python scripts for prompt optimization, RAG evaluation, and agent orchestration when building or tuning LLM systems.

maslennikov-ig/claude-code-orchestrator-kit

Guide for upgrading Stripe API versions and SDKs. An agent skill from kanchengw/cnllm.

kanchengw/cnllm

Helps design and build AI agents for any domain around a minimal loop of capabilities, knowledge and context, adding planning or subagents only when needed.

shareAI-lab/lab-skills

This skill should be used when the user wants to "write agent code", "build an agent with ADK", "add a tool", "create a callback", "define an agent", "use state management", or needs ADK (Agent…

pifferologo/cloud-agents-cli

Explains the n8n Custom Code Tool's actual runtime contract so an AI-agent-callable tool doesn't get written like a regular workflow Code node.

czlonkowski/n8n-skills

Builds ADK (Agent Development Kit) Python agents: LLM agents with tools, graph workflows of function and agent nodes, conditional routing, fan-out and join, schema-validated delegation between…

google/adk-python

Authoring playbook for building agents that write, edit, review, or refactor code.

mastra-ai/mastra

Build production-ready AI agent backends using the CloudBase Agent Python SDK — create agents with LangGraph/CrewAI/LlamaIndex, serve them via FastAPI with AG-UI protocol streaming +…

TencentCloudBase/CloudBase-AI-Toolkit

INVOKE THIS SKILL when implementing human-in-the-loop patterns, pausing for approval, or handling errors in LangGraph.

langchain-ai/langchain-skills

Grounding, architectural standards, Python best practices, package facade conventions, testing, and verification workflows for developing any Python code across the entire A2UI repository (core…

a2ui-project/a2ui

Gives patterns, a tool design checklist and an architecture decision tree for building agent harnesses, tools and multi-agent setups around a model.

FareedKhan-dev/claude-code-from-scratch

PostHog AI Observability integration for LangChain (Python). An agent skill from Jwuthri/Tracely-ai.

Jwuthri/Tracely-ai

Generate synthetic data using sdghub with composable blocks and YAML flows.

Red-Hat-AI-Innovation-Team/sdg_hub

Teaches an agent to build LM pipelines, RAG systems and agents in DSPy using signatures, modules and optimizers instead of hand-tuned prompts.

Orchestra-Research/AI-Research-SKILLs

Releases the Python SDKs (a2ui-core, a2ui-agent-sdk) to PyPI by running preflight checks, dispatching the release workflow as a dry run, confirming with the maintainer, publishing, and following the…

a2ui-project/a2ui

Migrates Python LangChain Deep Agents applications to Pydantic AI and Pydantic AI Harness while preserving the application's observed behavior.

pydantic/pydantic-ai

Add, move, rename, or delete a page on the LangChain docs site.

langchain-ai/docs

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

PenShot 项目开发 Skill。用于修改或审查 Agent、LangGraph 工作流、任务生命周期、记忆/RAG、配置、REST、MCP、CLI、测试和项目文档；先核实源码与工具配置，再按现有架构实施并验证。

neopen/story-shot-agent

Maps the /ai/ subsystem of flowfile_core, its three agent tiers, litellm seam, BYOK keys and rate limits, and sets rules for extending or debugging it safely.

Edwardvaneechoud/Flowfile

Explains how to build agents with the Deep Agents framework: create_deep_agent, the built-in middleware, the harness, SKILL.md format and configuration options.

langchain-ai/langchain-skills

Python style and codebase conventions for ADK (Agent Development Kit): private-by-default file visibility, imports, type hints, Pydantic v2 models, formatting, docstrings, logging, async I/O, file…

google/adk-python

Migrate Python LangChain, LangGraph, or Deep Agents applications to Pydantic AI and, when the source uses harness features, Pydantic AI Harness.

pydantic/pydantic-ai

A developer guide to adding compact memory to an agent: when to trigger compaction, how to fork a compactor sub-agent, what the summary holds, and how to restore it.

simbajigege/book2skills

Delegates click-through web tasks, games and quizzes to S1A through its s1a command, or asks a fast decision model to pick one option from a list you provide.

ThinkFlowLab/system1-agents

Execute code in E2B sandboxes and integrate with LLMs for tool calling.

agent-sandbox/agent-sandbox

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

INVOKE THIS SKILL when setting up a new project or when asked about package versions, installation, or dependency management for LangChain, LangGraph, LangSmith, or Deep Agents.

langchain-ai/langchain-skills

How to reference code from sample repos in Agent Framework docs pages using :::code directives, snippet tags, zone pivots, and highlight attributes.

MicrosoftDocs/semantic-kernel-docs

Run EvalView regression checks against golden baselines to detect regressions in AI agent behavior after code, prompt, or model changes.

hidai25/eval-view

Initialize, validate, and troubleshoot Deep Agents projects in Python or JavaScript using the deepagents package.

soba-labs/langchain-agent-skills

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

langchain-ai/langchain-skills

UiPath Coded Functions — deterministic Python or TypeScript/JavaScript units built with the uip function CLI (new -l py|ts|js, init, serve, run, pack, publish); the functions map in uipath.json…

UiPath/skills

Build, extend, evaluate, or migrate applications with Strands Agents in Python or TypeScript.

strands-agents/harness-sdk

INVOKE THIS SKILL when building ANY retrieval-augmented generation (RAG) system.

langchain-ai/langchain-skills

Helps define agent tools with a fail-closed pattern: one class holding name, schema, security flags and a validate, permission and call execution chain.

simbajigege/book2skills