onlyboxes
★ 24
vs
fastmcp
★ 25.4k
onlyboxes vs fastmcp
onlyboxes: Onlyboxes is a self-hosted code execution sandbox platform for individuals and small teams. It uses a control-plane and execution-plane architecture, supports horizontal scaling and multi-language heterogeneous runtimes. It provides REST APIs and MCP tools for executing Python code and stateful terminal sessions.; fastmcp: FastMCP is a standard framework for building Model Context Protocol (MCP) applications, which connect LLMs to tools and data. It simplifies the process by automatically generating schemas, validation, and documentation for tools, and managing transport negotiation and authentication for server connections. FastMCP offers a comprehensive solution for developing, deploying, and scaling MCP-powered systems.
01
TL;DR
Choose onlyboxes if…Safely execute untrusted code in isolated environments for development and testing
Choose fastmcp if…Building LLM applications that interact with custom tools and data sources
02
Side-by-Side Comparison
03
Features
onlyboxes01Self-hosted all components: console and worker
02Separated control and execution planes with horizontal scaling, multi-language heterogeneous implementations, and multiple runtimes
03Full account system with resource isolation (stateful containers, sessions) between accounts
04MCP tools: pythonExec, terminalExec, and readImage
05REST API for all MCP tools with async task support
fastmcp01Automatic schema, validation, and documentation generation for tools
02Managed transport negotiation, authentication, and protocol lifecycle for server connections
03Wraps Python functions into MCP-compliant tools, resources, and prompts (Servers)
04Connects to any MCP server with full protocol support (Clients)
05Provides interactive UIs for tools rendered directly in conversations (Apps)
04
Use Cases
onlyboxes↳Safely execute untrusted code in isolated environments for development and testing
↳Collaborate with small teams by sharing sandboxed execution environments
↳Integrate code execution into AI chat clients via MCP tools
fastmcp↳Building LLM applications that interact with custom tools and data sources
↳Creating interactive conversational UIs for backend functionalities
↳Developing and deploying scalable MCP servers and clients
05
Best For
onlyboxesTrendingAPI Integration
fastmcpMost PopularDev ToolingLLM Infra
FAQ
FAQ
What is the difference between onlyboxes and fastmcp?
Both onlyboxes and fastmcp are in the Dev Tooling category. onlyboxes has 24 stars, while fastmcp has 25.4k stars.
Which is better, onlyboxes or fastmcp?
The best choice depends on your use case. Choose onlyboxes if Safely execute untrusted code in isolated environments for development and testing, and fastmcp if Building LLM applications that interact with custom tools and data sources.
Is onlyboxes free or open source?
Yes, onlyboxes is open source on GitHub (AGPL-3.0).
Is fastmcp free or open source?
Yes, fastmcp is open source on GitHub (Apache-2.0).
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