Blog

Release notes, design decisions and test reports from OpenDsec. Subscribe: RSS

• October 25, 2026DeepSeek's DSec paper: sandbox infrastructure for agentic RL at scale

  DeepSeek's DSec paper explained: how its agentic RL sandbox platform schedules, overcommits, loads images on demand and blocks cheating, and how OpenDsec differs.

• October 25, 2026Self-hosting E2B: run E2B code sandboxes on your own servers

  Two ways to self-host E2B, and a step-by-step E2B-compatible code sandbox with open-source OpenDsec: one-machine install, code interpreter, fork and snapshots.

• October 24, 2026Acceptance-testing the open-source release on fresh machines: 22 issues

  Before the release we followed the README on fresh Ubuntu 24.04 VMs through every feature a user would touch, and found and fixed 22 issues, two of them serious.

• October 24, 2026OpenDsec is open source

  Sandbox infrastructure built from DeepSeek's DSec paper, now open source under AGPL-3.0, with Firecracker microVMs, fork with memory, task-level pause and an E2B-compatible API.