Verifiers v0.1.15.dev3 Release Notes

Date: 05/13/2026

Highlights since v0.1.15.dev2

• OverlongPromptError no longer surfaces as a spurious interception error. CliAgentEnv / ComposableEnv rollouts that overflow the model context now report a clean stop=prompt_too_long without an accompanying InterceptionError in the eval errors summary. The interception server's first-error-wins guard now also short-circuits once the rollout loop has finalized via state["prompt_too_long"], so tail-end failures (e.g. write_eof to an agent that already closed its transport) can no longer re-attach a spurious StreamInterrupted on top of the real stop signal.
• v1 sandbox commands run as background jobs. v1 sandbox program commands and Harbor verifier tests now run through run_background_job instead of foreground execute_command, preserving configured command/test timeouts as the background-job budget.

Changes included in v0.1.15.dev3 (since v0.1.15.dev2)

Fixes and maintenance

• fix: treat OverlongPromptError as stop condition in interception proxy (#1365)
• Use background jobs for v1 sandbox commands (#1364)

Full Changelog: v0.1.15.dev2...v0.1.15.dev3