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  1. Home
  2. Alternatives
  3. Alternatives to FastMCP
FastMCP logo

Best Alternatives to FastMCP

AI Agents · 8 alternatives ranked of 78 in the category

Looking for alternatives to FastMCP? These are the ai agents tools that score highest on adoption, reviews, benchmarks, and public code, with what separates each one from FastMCP.

Guild.ai logo
Guild.ai

AI Agents· guild.ai

Custom

The control plane for AI agents

API available

How each alternative differs from FastMCP

Ranked by adoption, review, benchmark, and repository signals. Each note below is drawn from the two products’ own catalog records, so a product with nothing to separate it from FastMCP carries no note.

  1. 1

    Guild.ai

    Guild.ai is not listed as open source, while FastMCP is, is custom-priced against FastMCP's open source model, and exposes a public API you can build against.

  2. 2

    CrewAI

    CrewAI exposes a public API you can build against and carries 60k GitHub stars to FastMCP's 28k.

  3. 3

    Actian

    Actian is not listed as open source, while FastMCP is, is custom-priced against FastMCP's open source model, and exposes a public API you can build against.

  4. 4

    Replay.io

    Replay.io is not listed as open source, while FastMCP is, is custom-priced against FastMCP's open source model, and exposes a public API you can build against.

  5. 5

    OpenAI Codex CLI

    OpenAI Codex CLI exposes a public API you can build against and carries 129k GitHub stars to FastMCP's 28k.

Frequently asked questions

What is the closest alternative to FastMCP?

Guild.ai ranks highest among the alternatives to FastMCP we track. Guild.ai is not listed as open source, while FastMCP is, is custom-priced against FastMCP's open source model, and exposes a public API you can build against. The control plane for AI agents

Which FastMCP alternatives offer an API?

Guild.ai, CrewAI, Actian, Replay.io, OpenAI Codex CLI, OpenAI Agents SDK, Browser Use, and ComfyUI expose a public API. FastMCP does not publish one in our catalog, so these are the options if you need to build against the product programmatically.

CrewAI logo
CrewAI

AI Agents· crewai.com

Open source

Open-source framework for multi-agent workflows and role-based agents.

59,893
Open source
Actian logo
Actian

AI Agents· actian.com

Custom

Portable vector database for edge AI

API available
Replay.io logo
Replay.io

AI Agents· replay.io

Custom

Drop-in QA for web apps

API available
OpenAI Codex CLI logo
OpenAI Codex CLI

AI Agents· github.com

Open source

Lightweight coding agent that runs in the terminal and helps builders inspect, edit, test, and ship code from a local workspace.

129,265
Open source
OpenAI Agents SDK logo
OpenAI Agents SDK

AI Agents· openai.github.io

Open source

Open-source Python SDK for building, running, tracing, and handoff-driven AI agents with OpenAI models and tools.

30,248
Open source
Browser Use logo
Browser Use

AI Agents· browser-use.com

Freemium

Browser automation framework and managed browser infrastructure for web agents, with an open-source library and hosted cloud execution.

118,909
Open source
ComfyUI logo
ComfyUI

AI Agents· comfy.org

Open source

The modular AI image and workflow backend for builders shipping node-based generation pipelines, custom diffusion apps, and visual automation.

142,998
Open source
  • 6

    OpenAI Agents SDK

    OpenAI Agents SDK exposes a public API you can build against.

  • 7

    Browser Use

    Browser Use is freemium against FastMCP's open source model, exposes a public API you can build against, and carries 119k GitHub stars to FastMCP's 28k.

  • 8

    ComfyUI

    ComfyUI exposes a public API you can build against and carries 143k GitHub stars to FastMCP's 28k.