Pydantic Logfire launches Agent Sandboxes with millisecond cold starts and snapshots
samuelcolvin · x · 2026-11-12
Samuel Colvin announced Agent Sandboxes in Pydantic Logfire, a different take on sandboxes:
- Just an isolated interpreter with cold starts measured in milliseconds, no firecracker/gVisor/VM infrastructure
- Code can only call the tools you provide and use the directories you mount — a natural fit for programmatic tool calling in agents
- Snapshots let you resume a REPL weeks later at virtually zero cost
- $1,000 of free credit in the first month
Related event: Pydantic Logfire Debuts Agent Sandboxes with Millisecond Cold Starts(3 posts)→
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