175 listed
Harnesses & SDKs
Frameworks and SDKs for building agents: the Claude Agent SDK, OpenAI Agents SDK, LangGraph, CrewAI and many more. Each page lists languages, packages, MCP and A2A support and how it orchestrates agents, with a link to the page every fact came from.
Showing 49–58 of 58
| Name | Language | Stars | Downloads / month (approx.) | MCP | A2A | Multi-agent |
|---|---|---|---|---|---|---|
| Agent SDK Go Go framework for AI agents with memory, tool execution, MCP, agent skills, multi-agent patterns and evaluation. | Go | 640 | — | Built in | Not stated | Yes |
| Swiftide Rust framework with an agent harness, typed task graphs and streaming indexing and RAG pipelines for LLM applications. | Rust | 795 | ~806 | Built in | Not stated | — |
| Julep Python framework for durable AI agents built as dataflows that resume after crashes, retry safely and record each step. | Python | 6.6K | ~1.6K | Built in | Not stated | — |
| dexto Open agent harness for AI applications, with a YAML-configured coding agent, sessions, tools, MCP support and a CLI. | TypeScript | 657 | — | Built in | Not stated | Yes |
| LightAgent Python agent framework for OpenAI-compatible agents with tools, memory, MCP connections, multi-agent collaboration and workflows. | Python | 1.2K | ~261 | Built in | Not stated | Yes |
| Inngest AgentKit Framework for AI agents and multi-agent networks where a router picks which agent runs, with tools and MCP support. | TypeScript | 956 | ~52K | Built in | Not stated | Yes |
| Qwen-Agent Python framework for LLM applications built on Qwen models, with function calling, MCP, a code interpreter and RAG options. | Python | 17.2K | ~90K | Built in | Not stated | — |
| Upsonic Python framework for autonomous agents that work in a sandboxed workspace, and task agents with tools and MCP support. | Python | 8K | ~1K | Built in | Not stated | Yes |
| mcp-agent Python framework for MCP-based agents with composable workflow patterns, MCP server creation and Temporal-backed durable execution. | Python | 8.6K | ~65.2K | Built in | Not stated | Yes |
| Azure AI Foundry Agents SDK Managed Microsoft Foundry service for building, deploying and scaling AI agents, with a Python client library on PyPI. | Python | — | ~4.7M | Built in | Not stated | — |