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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.

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Showing 1–5 of 5

NameLanguageStarsDownloads / month (approx.)MCPA2AMulti-agent
docx-editor

Browser DOCX editor and document engine built on OOXML, with a Document API that agents reach through SDKs, a CLI and an MCP server.

JavaScript, Python1.1K—Via adapterNot stated—
notte

Browser infrastructure for AI agents: local and cloud Playwright-based browser sessions, scraping and deployable browser functions.

Python, JavaScript, TypeScript2K~2.6KVia adapterNot stated—
python-utcp

Official Python implementation of the Universal Tool Calling Protocol, calling HTTP, CLI, MCP and text-file tools through plugins.

Python653~8.1KVia adapterNot stated—
flint-chart

Visualization language and MCP server that lets AI agents create charts from editable chart specs.

TypeScript4.4K—Via adapterNot stated—
RAGLight

Typed Python toolkit for composing classic and agentic retrieval-augmented generation pipelines with pluggable LLMs and stores.

Python673~330Via adapterNot stated—

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