Tier 4 · Open-source coding agents Coding agents · fetched 2026-07-02

OpenHands

A leading open platform for software-development agents that execute long-horizon tasks in sandboxed environments (Docker) with browser and terminal access - the reference for agent-computer interface design and safe execution.

View source on GitHub

Key takeaways

01
Sandboxed execution environments are the safety foundation
02
Long-horizon tasks need explicit state and event streams
03
The agent-computer interface is a designed surface, not an accident

Flows built on this research

Agent Architecture

Design the Agent-Computer Interface (ACI)

Apply SWE-agent's key finding: agents perform dramatically better when their commands, viewers, and feedback are designed for models, not humans.

5 steps · 90-120 minutes

Harness Engineering

Sandbox Untrusted Code Execution

Contain what your agent runs: isolated execution environments with resource limits, network policy, and workspace mounting done right.

4 steps · 120-180 minutes