Verifiers v0.1.10 Release Notes

Date: 02/10/2026

Full Changelog: v0.1.9...v0.1.10

Highlights since v0.1.9

• Expanded environment support with OpenEnv and BrowserEnv integrations, env worker plumbing, and continued improvements to CliAgentEnv/RLMEnv sandbox reliability and customization hooks.
• Upgraded evaluation ergonomics with resumed evals, improved TUI info/log presentation, better rollout/token tracking, and non-TUI overflow rendering fixes.
• Improved reliability across model/runtime boundaries with timeout hardening, safer sandbox lifecycle behavior, and richer error/metadata handling.
• Modernized workspace setup and contributor workflows (vf-setup endpoint/config updates, GEPA config support, Prime CLI refactor, skills scaffolding, and AGENTS guidance updates).
• Added opencode harbor enhancements, including TITO support, tunnel sync stop behavior, and terminal-bench task coverage.

Changes included in v0.1.10 (since v0.1.9)

Environment, rollout, and runtime improvements

• openenv integration (#829)
• Add Browser Env Integration (#732)
• resume evals (#803)
• add Client Pool (#815)
• RLM: Eager sandbox creation, conditional pip install (#834)
• RLM: Add RLMEnv sandbox hooks for safer customization (#849)
• RLM: Make FIFO IO non-blocking (#850)
• CliAgentEnv: add SandboxMixin, refactor InterceptionServer (#847)
• rlm: migrate sandbox executor to SandboxMixin (#875)
• env worker integration (#832)
• track vf + env version in metadata (#881)
• handle empty metrics (#855)
• move sanitize_metadata out of save_metadata (#852)
• improve env client timeouts (#872)
• Fix ty logger protocol typing in sandbox retry setup (#835)
• Fix vf-eval concurrent rollout label to use effective cap (#836)

Evaluation UX, logging, and metrics

• Add robust token usage tracking (#858)
• Tighten vf-tui info preview formatting and typing checks (#830)
• Add subtle --debug hint beneath Logs panel (#824)
• Fix vf-eval non-TUI live overflow rendering (#883)
• misc logging improvs (#882)

Setup, CLI, and configuration

• vf-setup: prefer endpoints.toml, rename configs/lab->configs/rl, add GEPA configs, deprecate --vf-rl (#859)
• Support long endpoint field names in TOML registries (#861)
• prime CLI refactor (vf) (#870)
• refactor: split RL trainer into optional in-repo verifiers-rl package (#843)
• move rlm secrets out of vf and into research-environments (#856)

Documentation, workflows, and skills

• Compile AGENTS docs from modular assets and make guidance concrete (#857)
• skills setup (#873)
• Strengthen lab AGENTS env-development guardrails (#876)
• Clarify MCPEnv is for global read-only MCP servers (#838)
• docs: remove parser-centric guidance from environment READMEs (#839)
• docs: remove parser field from env init README template (#840)
• chore: enforce ruff formatting and improve dev tooling docs (#845)

Integrations and environment packages

• openenv: default template proj/ path and simplify prompt renderer signatures (#853)
• remove vf pin in opencode_harbor (#844)
• opencode env: TITO support, tunnel sync stop, add terminal-bench (#874)
• ci: skip terminus_harbor in test-envs (#846)
• fix math rubric timeouts (#831)
• Fix for dir resolutions (#879)
• Update browse-environments freshness and quality priorities (#884)
• Clarify agent skill handling (#886)