Verifiers v0.1.15.dev0 Release Notes

Date: 05/12/2026

Highlights since v0.1.14

v1 taskset/harness follow-through. Refreshes the docs and examples around the v1 taskset/harness path, completes the opencode_harbor migration, adds setup-state compatibility for environments, and makes sandbox worker caps configurable.
Agent and SWE environment updates. Adds the experimental SWE debug environment, moves OpenCode configuration into reusable harness code, refactors the LangChain Deep Agents example to a v1 Wikispeedia taskset, and removes the direct prime-sandboxes dependency from rlm_swe_v1.
Interception, sandbox, and renderer hardening. Requires auth for interception endpoints, surfaces swallowed interception response errors, fixes keepalive configuration, avoids holding sandbox workers while background jobs run, retries transient file-read timeouts, and aligns renderer tool envelopes with the training distribution.

feat(composable): render pre-compaction branches via harness hook (#1291)
Make sandbox worker caps configurable (#1305)
Support setup_state return-state compatibility (#1308)
Update v1 Taskset/Harness docs and opencode_harbor migration (#1309)
Refactor deep-agents envs to v1 taskset-harness and add Wikispeedia example (#1317)
Add SWE debug environment (#1306)
Move OpenCode config into reusable harness package (#1318)
Remove direct prime-sandboxes dependency from rlm_swe_v1 (#1316)
Install sandbox fn program packages (#1319)
opencode: write config under XDG_CONFIG_HOME (#1320)
feat: surface swallowed response_future errors in interception proxy (#1196)
opencode: pin small_model to the intercepted provider (#1323)
Avoid holding sandbox workers with run_background_job() (#1328)
Skip OpenCode install when binary is pre-baked (#1176)

Require auth for interception endpoints (#1304)
fix: mute httpcore/httpx DEBUG when env-worker json_logging sets root level (#1234)
bump interception client size to handle trajectories with images (#1310)
Fix eval summary for heterogeneous metrics (#1295)
apt: harden sandbox bootstrap against transient archive.ubuntu.com flakes (#1284)
fix(renderer-client): wrap tools in OpenAI envelope to match training distribution (#1307)
fixes rlm compaction prompt so we still get tito hit (#1322)
Fix interception keepalive env override (#1321)
fix: narrow send_cancel BaseException catch to Exception (#1198)
Fix Harbor Hub task root handling (#1345)
Pin OpenCode small model in legacy configs (#1327)
Remove local training config scaffolding from Verifiers (#1348)
retry Read file timed out (#1350)

Full Changelog: v0.1.14...v0.1.15.dev0