Create an Environment
Give your agent a persistent Sandbox0 workspace with project files and a writable RootFS.
Sandpi Platform
Coding agents, ready for your API.
Run a real coding-agent harness against a persistent project. Keep files and native agent history across Runs, stream progress, and return to the same Environment after it pauses.
Workflow
Environment → Session → Run.
Choose a harness
Open a Session for Codex, Claude Code, or Pi. Each Session retains its native conversation history.
Submit a Run
Send one task, follow its event stream, and inspect the result and itemized model usage.
Harnesses
Use the agent you need.
Codex
Runs against the official OpenAI API.
Claude Code
Runs against the official Anthropic API.
Pi
Select a supported provider and model when you create a Session and submit a Run.
Usage-based pricing
Official model token rates.
Platform supplies the upstream API keys. Model tokens are billed at official provider prices. A 5% fee applies only when topping up prepaid credits, with no separate Sandbox charge.