Sandbox Agent SDK – unified API for automating coding agents
We’ve been working with automating coding agents in sandboxes as of late. It’s bewildering how poorly standardized and difficult to use each agent varies between each other. We open-sourced the Sandbox Agent SDK based on tools we built internally to solve 3 problems: 1. Universal agent API: interact with any coding agent using the same API 2. Running agents inside the sandbox: Agent Sandbox provides a Rust binary that serves the universal agent API over HTTP, instead of having to futz with undocumented interfaces 3. Universal session schema: persisting sessions is always problematic, since…
In plain words
Sandbox Agent SDK provides a unified API for interacting with different coding agents in sandboxed environments. Developers use it to work with any coding agent through a consistent interface instead of learning each agent's proprietary setup. The SDK runs as either an HTTP server or TypeScript library and standardizes session persistence and agent communication, solving compatibility and integration challenges that arise from the lack of standardization across coding agents.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
We’ve been working with automating coding agents in sandboxes as of late. It’s bewildering how poorly standardized and difficult to use each agent varies between each other. We open-sourced the Sandbox Agent SDK based on tools we built internally to solve 3 problems: 1. Universal agent API: interact with any coding agent using the same API 2. Running agents inside the sandbox: Agent Sandbox provides a Rust binary that serves the universal agent API over HTTP, instead of having to futz with undocumented interfaces 3. Universal session schema: persisting sessions is always problematic, since we don’t want the source of truth for the conversation to live inside the container in a schema we don’t control Agent Sandbox SDK has: - Any coding agent: Universal API to interact with all agents with full feature coverage - Server or SDK mode: Run as an HTTP server or with the TypeScript SDK - Universal session schema: Universal schema to store agent transcripts - Supports your sandbox provider: Daytona, E2B, Vercel Sandboxes, and more - Lightweight, portable Rust binary: Install anywhere with 1 curl command - OpenAPI spec: Well documented and easy to integrate We will be adding much more in the coming weeks – would love to hear any feedback or questions.
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