Openharness Daily: PRD Efficiency Trials and Sandbox Hardening
Eighteen merged PRs were dominated by rigorous, isolated experiments to cut PRD and delegate cost without losing quality, plus sandbox and tool reliability fixes. The paired low-effort run held pass rates while cutting cost to 71 percent, and a failed delegate candidate was reverted.
Duration: PT2M19S
Episode overview
This episode is a short developer briefing from Openharness Daily.
It explains recent repository work in plain language.
- Show: Openharness Daily
- Published: 2026-09-27T12:00:04Z
- Audio duration: PT2M19S
Transcript excerpt
This excerpt keeps the crawler page concise. Listen to the episode or use the RSS feed for the full update.
Good morning, it's Sunday, September 27th, 2026.
The clear pattern this cycle is measurement before modification: nine of eighteen pull requests build or repair isolated experiment harnesses for A I skills, with sandbox reliability as the second focus.
First, the P R D efficiency program matured. P R 1189 froze a corpus of ten closed issues and built a grounding verifier, while P R 1196 did the same for git conventions, blocking push and outside access from test episodes. Both enforce the same rule: freeze only when pass rates fall below seventy-five percent. On…
Second, sandbox and tooling got safer. P R 1209 moved sandbox list behind a single controller with explicit image selection and retired the old plans directory, while P R 1218 ensures a failed upgrade of an unpinned sandbox restores its prior image. P R 1203 fixes root-level tool receipts so uninstall fails with a…
What's next: watch the operator decision on the turn-reduction edits after the rescore, and expect further cost screens — a new seven-day skill spend report in P R 1223 gives the baseline.
That's it for today — thank you for listening.
Nearby episodes from Openharness Daily
- Slack Approvals Harden and Experiments Freeze
- Planning Consolidation and Double Release
- Version 0.13 Cutover and Sandbox Fix
- Tracing Fix and Harness Simplification
- Weekly Recap - Host Installs Mature, Memory Streamlined
- Evidence Over Scores and Preserve Over Retire
- Cutting Docs Clutter and Fixing the Sandbox
- Cleaning Up Agent Memory