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AI tools for building AI agents
107 frameworks, browser agents, MCP servers and model APIs for agents. Frameworks, browser agents, MCP tooling and model APIs for building agent-style applications.
How to read this page. The tools are grouped by category and are not ranked. Pricing labels come from vendors' own pages when we could confirm them. Always verify plans and limits on the vendor's site.
AI Agents & Frameworks (31)
| Tool | What it does | Pricing | Link |
|---|---|---|---|
| AgentOps | Observability and monitoring for AI agents. | See site | Official site |
| Agno | Framework and runtime for building multi-agent systems. | Freemium | Official site |
| Amazon Bedrock AgentCore | AWS services for deploying and operating AI agents at scale. | See site | Official site |
| AutoGen | Microsoft's open-source framework for building multi-agent applications. | Free | Official site |
| AutoGPT | Open-source platform for building and running autonomous AI agents. | See site | Official site |
| BeeAI | Open-source platform for discovering and running AI agents. | See site | Official site |
| CAMEL-AI | Open-source community and framework for multi-agent research. | Free | Official site |
| Composio | Tool integration platform that connects AI agents to apps and APIs. | Freemium | Official site |
| CopilotKit | Open-source framework for adding in-app AI copilots and agentic UIs. | Freemium | Official site |
| CrewAI | Framework and platform for orchestrating teams of role-playing AI agents. | See site | Official site |
| DSPy | Framework for programming rather than prompting language models. | Free | Official site |
| Google Agent Development Kit | Google's open-source toolkit for building and deploying AI agents. | Free | Official site |
| Griptape | Framework and cloud for building AI agents and workflows. | See site | Official site |
| Haystack | Open-source framework from deepset for building search, RAG and agent pipelines. | Free | Official site |
| LangChain | Open-source framework and company for building LLM-powered applications and agents. | Freemium | Official site |
| LangGraph | Framework for building stateful, controllable multi-step agents. | See site | Official site |
| Letta | Platform for building stateful agents with long-term memory. | Freemium | Official site |
| LlamaIndex | Framework and cloud services for building agents over your own data. | Freemium | Official site |
| Manus | General-purpose autonomous AI agent. | See site | Official site |
| Mastra | TypeScript framework for building AI agents and workflows. | Freemium | Official site |
| Mem0 | Memory layer for AI agents and applications. | See site | Official site |
| Microsoft Copilot Studio | Low-code platform for building custom copilots and agents. | See site | Official site |
| OpenAI Agents SDK | OpenAI's lightweight Python framework for multi-agent workflows. | Free | Official site |
| Pydantic AI | Python agent framework from the Pydantic team focused on type safety. | Free | Official site |
| Relevance AI | Platform for building and managing teams of AI agents without code. | See site | Official site |
| Salesforce Agentforce | Salesforce's platform for building and deploying AI agents on CRM data. | See site | Official site |
| Semantic Kernel | Microsoft's SDK for integrating AI models and agents into applications. | Free | Official site |
| Sim | Open-source visual builder for AI agent workflows. | Freemium | Official site |
| smolagents | Hugging Face's minimal library for building agents that write code. | Free | Official site |
| Vercel AI SDK | TypeScript toolkit for building AI-powered applications and agents. | See site | Official site |
| Zep | Context engineering and memory platform for AI agents. | Freemium | Official site |
Browser Agents (19)
| Tool | What it does | Pricing | Link |
|---|---|---|---|
| Airtop | Cloud browser automation platform for AI agents. | Freemium | Official site |
| Anchor Browser | Cloud browser platform for AI agents with persistent sessions. | Freemium | Official site |
| Apify | Platform for web scraping, browser automation and AI agent tools. | Freemium | Official site |
| Bright Data | Web data platform offering scraping, proxies and browser infrastructure for AI. | Freemium | Official site |
| Browser Use | Open-source library and cloud for letting AI agents control a web browser. | See site | Official site |
| Browserbase | Cloud headless browser infrastructure for AI agents and web automation. | Freemium | Official site |
| Browserless | Hosted headless browsers and automation APIs. | Freemium | Official site |
| BrowserOS | Open-source browser with built-in AI agents. | See site | Official site |
| Dia | AI-first web browser from The Browser Company. | Freemium | Official site |
| Fellou | Agentic browser that automates research and web tasks. | Freemium | Official site |
| Hyperbrowser | Cloud browser infrastructure for running AI web agents at scale. | Freemium | Official site |
| Kernel | Cloud browser infrastructure for AI agents. | Freemium | Official site |
| Lightpanda | Lightweight headless browser built for automation and AI agents. | Freemium | Official site |
| Nanobrowser | Open-source Chrome extension for running multi-agent web automation. | Free | Official site |
| Opera Neon | Opera's agentic AI browser. | See site | Official site |
| Perplexity Comet | Perplexity's AI-powered web browser. | See site | Official site |
| Skyvern | Automates browser-based workflows using LLMs and computer vision. | See site | Official site |
| Stagehand | Open-source SDK from Browserbase for browser automation with natural language. | See site | Official site |
| Steel | Open-source browser API for AI agents. | Freemium | Official site |
MCP Servers & Registries (24)
| Tool | What it does | Pricing | Link |
|---|---|---|---|
| Browserbase MCP | MCP server that gives AI assistants cloud browser control through Browserbase. | See site | Official site |
| Cloudflare MCP Servers | Cloudflare's documentation and servers for building and hosting remote MCP servers. | See site | Official site |
| Context7 | MCP server that provides up-to-date library documentation to coding assistants. | See site | Official site |
| Docker MCP Catalog and Toolkit | Docker's catalog and toolkit for running containerized MCP servers. | See site | Official site |
| Exa MCP | Exa's MCP server for web search from AI assistants. | See site | Official site |
| FastMCP | Python framework for building MCP servers and clients. | See site | Official site |
| Figma MCP Server | Figma's MCP server that gives AI coding tools access to design context. | See site | Official site |
| GitHub MCP Server | GitHub's official MCP server for repositories, issues and pull requests. | Free | Official site |
| Glama | Directory of MCP servers with search and details. | See site | Official site |
| Linear MCP | Linear's MCP server for accessing issues and projects from AI tools. | See site | Official site |
| MCP Inspector | Interactive developer tool for testing and debugging MCP servers. | See site | Official site |
| MCP Reference Servers | Repository of reference and community MCP server implementations. | See site | Official site |
| MCP Registry | Official community registry of Model Context Protocol servers. | See site | Official site |
| mcp.so | Community directory of MCP servers. | See site | Official site |
| Model Context Protocol | Open protocol for connecting AI applications to tools and data sources. | See site | Official site |
| Notion MCP | Notion's MCP server for connecting AI tools to a workspace. | See site | Official site |
| Pipedream MCP | Hosted MCP servers for thousands of apps from Pipedream. | See site | Official site |
| Playwright MCP | Microsoft's MCP server that lets agents drive a browser with Playwright. | Free | Official site |
| PulseMCP | Directory and news about MCP servers and clients. | See site | Official site |
| Sentry MCP | Sentry's MCP server for giving AI tools access to error and performance data. | See site | Official site |
| Smithery | Registry and hosting platform for MCP servers. | See site | Official site |
| Stripe MCP | Stripe's MCP server and tools for working with the Stripe API from AI agents. | See site | Official site |
| Supabase MCP | Guide to connecting AI assistants to Supabase projects with MCP. | See site | Official site |
| Zapier MCP | Connects AI assistants to thousands of apps via Zapier through MCP. | See site | Official site |
LLM APIs & Model Providers (33)
| Tool | What it does | Pricing | Link |
|---|---|---|---|
| AI21 Labs | AI lab offering the Jamba models and enterprise AI tools. | See site | Official site |
| Alibaba Cloud Model Studio | Alibaba Cloud's platform for accessing and building on Qwen and other models. | See site | Official site |
| Amazon Bedrock | AWS service offering foundation models from multiple providers through one API. | See site | Official site |
| Anthropic API | Anthropic's developer API for the Claude family of models. | See site | Official site |
| Anyscale | Managed platform for running Ray-based AI workloads. | See site | Official site |
| Azure AI Foundry | Microsoft's platform for building and managing AI apps and agents with a catalog of models. | See site | Official site |
| Baseten | Inference platform for deploying and serving AI models. | See site | Official site |
| Cerebras | AI hardware company offering high-speed inference for open models. | See site | Official site |
| Cloudflare Workers AI | Run AI models on Cloudflare's network via serverless APIs. | See site | Official site |
| Cohere | Enterprise AI company offering language models, embeddings and rerank APIs. | See site | Official site |
| Databricks Mosaic AI | Databricks' tools for building, serving and governing AI models and agents. | See site | Official site |
| DeepInfra | Hosted inference for open-source models via API. | See site | Official site |
| DeepSeek API | Developer documentation for the DeepSeek model API. | See site | Official site |
| Fireworks AI | Inference platform for open and fine-tuned generative models. | See site | Official site |
| Google AI Studio | Google's web tool and API gateway for prototyping with Gemini models. | See site | Official site |
| Groq | Fast inference platform that runs open models on custom LPU hardware. | See site | Official site |
| Hugging Face | Hub for open models, datasets and apps, with hosted inference. | See site | Official site |
| LiteLLM | Open-source gateway for calling many LLM providers through one OpenAI-style interface. | See site | Official site |
| Llama | Meta's family of open-weight models with downloads and developer resources. | See site | Official site |
| Modal | Serverless cloud for running AI workloads and model inference. | Freemium | Official site |
| Nebius | AI cloud with GPU infrastructure and managed inference. | See site | Official site |
| Novita AI | Cloud platform offering model APIs and GPU instances. | See site | Official site |
| NVIDIA NIM | NVIDIA's catalog of model endpoints and microservices for inference. | See site | Official site |
| OpenAI API | OpenAI's developer platform for its language, image, audio and agent APIs. | See site | Official site |
| OpenRouter | Unified API that routes requests to many model providers. | See site | Official site |
| Perplexity API | Perplexity's API for search-grounded answers. | See site | Official site |
| Portkey | AI gateway for routing, observing and governing LLM requests. | Freemium | Official site |
| Reka | AI lab offering multimodal models and APIs. | See site | Official site |
| Replicate | Run and deploy machine learning models through a simple API. | See site | Official site |
| SambaNova | AI infrastructure and inference cloud for open and custom models. | See site | Official site |
| Together AI | Cloud for running, fine-tuning and deploying open-source models. | See site | Official site |
| Vertex AI | Google Cloud's platform for building and deploying generative AI and ML models. | See site | Official site |
| xAI API | xAI's developer API for its Grok language, image and voice models, billed by usage. | Paid | Official site |