AgentIndex icon
AgentIndex
butterbase logo
butterbase
★ 3.0k
vs
fastapi_mcp logo
fastapi_mcp
★ 12.0k

butterbase vs fastapi_mcp

butterbase: Butterbase is an open-source, AI-native backend-as-a-service built on Postgres. Each app gets its own database with row-level security, plus auth, file storage, serverless functions, realtime subscriptions, an AI gateway, RAG and an MCP server, so coding agents can operate the backend through tools. It can be self-hosted with Docker Compose or used as a managed cloud.; fastapi_mcp: FastAPI-MCP allows you to expose your existing FastAPI endpoints as Model Context Protocol (MCP) tools. It offers native integration with FastAPI, including built-in authentication using existing dependencies, and preserves schemas and documentation.

01

TL;DR

butterbase logo
butterbaseDev Tooling · ★ 3.0k

Give an AI coding agent a real backend (database, auth, functions) it can provision and deploy through MCP

Read butterbase full review →
fastapi_mcp logo
fastapi_mcpDev Tooling · ★ 12.0k
When to choose:
  • You already have a FastAPI application and want to expose its endpoints as MCP tools while reusing your existing FastAPI authentication dependencies and Swagger schemas.
  • You want to mount the MCP server directly onto your ASGI app or deploy it separately under an MIT license.
When to skip:
  • You are building a standalone MCP server from scratch rather than wrapping a FastAPI app; use FastMCP or the official MCP Python SDK.
  • You need an actively updated repository (last push was November 2025).
Read fastapi_mcp full review →
02

Side-by-Side Comparison

Field
butterbase logobutterbase
fastapi_mcp logofastapi_mcp
Category
Dev Tooling
Dev Tooling
Stars
★ 3.0k
★ 12.0k
License
Apache-2.0
MIT
Install Command
docker compose -f docker-compose.local.yml up -d
uv add fastapi-mcp
Updated
3d ago
11mo ago
Open Source
Yes
Yes
Website
↗ Visit
↗ Visit
GitHub
↗ GitHub
↗ GitHub
Tags
backend-as-a-service, postgres, mcp
FastAPI, MCP, Python
03

Features

butterbase logobutterbase
01Per-app Postgres database with declarative schema, migrations, row-level security and auto-generated REST
02Auth (email and OAuth), S3/R2-backed file storage, key-value store and outbound webhooks
03TypeScript serverless functions on Deno, Durable Objects and WebSocket realtime subscriptions
04AI gateway, managed RAG collections and declarative multi-step agent workflows with human-approval pauses
05Every capability is exposed as MCP tools (HTTP or stdio), plus a Claude Code plugin with guided skills
fastapi_mcp logofastapi_mcp
01Authentication built in, using your existing FastAPI dependencies!
02FastAPI-native: Not just another OpenAPI -> MCP converter
03Zero/Minimal configuration required
04Preserving schemas of your request models and response models
05Flexible deployment - Mount your MCP server to the same app, or deploy separately
04

Use Cases

butterbase logobutterbase
↳Give an AI coding agent a real backend (database, auth, functions) it can provision and deploy through MCP
↳Self-host a Supabase-style backend on your own infrastructure without feature-gated editions
↳Build AI-driven apps that need RAG, an LLM gateway and stateful agents next to the database
fastapi_mcp logofastapi_mcp
↳Integrating FastAPI services as tools for large language models (LLMs) that support MCP.
↳Enabling LLMs to interact with and utilize existing business logic and data exposed via FastAPI.
↳Quickly exposing authenticated FastAPI APIs as discoverable and usable tools within an MCP ecosystem.
05

Best For

butterbase logobutterbase
Trending
fastapi_mcp logofastapi_mcp
Most PopularEssential
FAQ

FAQ

What is the difference between butterbase and fastapi_mcp?
Both butterbase and fastapi_mcp are in the Dev Tooling category. butterbase has 3.0k stars, while fastapi_mcp has 12.0k stars.
Which is better, butterbase or fastapi_mcp?
The best choice depends on your use case. Choose butterbase if Give an AI coding agent a real backend (database, auth, functions) it can provision and deploy through MCP, and fastapi_mcp if Integrating FastAPI services as tools for large language models (LLMs) that support MCP..
Is butterbase free or open source?
Yes, butterbase is open source on GitHub (Apache-2.0).
Is fastapi_mcp free or open source?
Yes, fastapi_mcp is open source on GitHub (MIT).
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Related

Alternatives to butterbase →Alternatives to fastapi_mcp →butterbase details →fastapi_mcp details →