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Dev & Sandbox

Code execution, hosting, databases and observability for agent infrastructure.

JSON: /api/v1/directory.json (filter on category=dev-sandbox)

GitHub REST API

Programmatic access to repos, issues, pull requests and Actions, with token or app authentication.

FreeAPI key

E2B

Secure cloud sandboxes where agents can run code and shell commands in isolation.

Free tierAPI key

Cloudflare Workers

Run JavaScript and WebAssembly at the edge, with free daily requests and KV, D1 and R2 bindings.

Free tierAPI key

Modal

Serverless Python compute with GPUs and sandboxes, defined entirely in code.

Free tierAPI key

Daytona

Fast, secure infrastructure for running AI-generated code in disposable sandboxes.

Free tierAPI key

Vercel

Platform for deploying frontends and serverless functions, with a REST API and sandbox product.

Free tierAPI key

Docker

Container tooling that is the usual way to isolate and reproduce agent runtime environments.

Free tierNo auth

Judge0

Open-source code execution service supporting dozens of languages through a simple API.

Free tierAPI key

Supabase

Open-source Postgres backend with auth, storage and edge functions, handy for agent app state.

Free tierAPI key

Neon

Serverless Postgres with instant branching, popular for giving agents disposable databases.

Free tierAPI key

Fly.io

Run containers close to users on fast-booting microVMs, with an API for machines.

PaidAPI key

Langfuse

Open-source observability for LLM apps: traces, evals, prompt management and cost tracking.

Free tierAPI key

LangSmith

Tracing, evaluation and monitoring platform for LLM applications and agents.

Free tierAPI key