Skip to Main Content

Vespera Day Agent

Built at Meta Global AI Developer Hackathon · Oct 26, 2026 · Remote

Demo video · vespera-day-agent.ericmaster.workers.dev/…

Agents write most of the code now, so the developer's job is review, and the review queue keeps growing while every ping pulls you out of the PR. Faros (22,000 developers) reports time in PR review up 441% and 31% more PRs merged with no review; LinearB finds agent PRs wait 5.3x longer for a reviewer. Existing tools measure hours or apps, not whether work was actually reviewed. Vespera Day Agent is a dev-owned monitor. From sources the developer grants (chat, email, coding-agent sessions, GitHub PRs and commits), deterministic detectors build a context-switch timeline and track one number: items closed with proper review. They flag rubber-stamp reviews (e.g. 785 lines approved in 40 s, no CI, zero files viewed) and task drift (side-quests that pull you off the assigned task). During the day Muse Spark raises evidence-backed alerts and proposes a parked task, a verification checklist, a no-interrupt review block and a team status draft. The developer approves each one. Nothing is sent, and there is no manager view. Try it: live demo https://vespera-day-agent.ericmaster.workers.dev — switch on a few sources, click Check now (real model call, ~1 min), open Why? on a proposal, then Approve or Reject. Replay without/with Vespera: /?mode=without and /?mode=with. Honest limits: the hosted day is a simulated fixture plus a staged demo repo; thresholds are hypotheses; ActivityWatch tested read-only on my own Windows machine.

Team