The eval layer for
agentic workflows.
devtail observes how your teams actually get work done — across apps, terminals, and browsers — and turns those workflows into living runbooks and testable evals for AI agents.
Built for teams that ship agents into production
The problem
Most agent failures aren't model failures. They're context failures — the workflows your team relies on were never written down, so they were never tested.
devtail closes the gap between what your team actually does and what your agents are evaluated against.
How it works
From keystrokes to a tested workflow,
in three steps.
-
01 capture
Capture how work actually flows.
A lightweight agent runs on your team's devices, recording the shape of work — apps opened, windows focused, commands run, urls visited. Content is redacted at source.
- macOS, Linux, Windows
- Browser & terminal coverage
- Local-first, encrypted at rest
-
02 model
Model the workflows that recur.
devtail clusters recurring sequences into named workflows. Each becomes a versioned runbook your team can review, edit, and approve — the source of truth your docs were always meant to be.
- Auto-named, human-edited
- Versioned, diff-able
- Ownership & review built in
-
03 evaluate
Test your agents against the real thing.
Each workflow becomes an eval your agents are graded against. When the workflow changes, the eval updates. Plug into your CI to gate rollouts, or run on a schedule to detect regressions.
- CI & cron integrations
- Pass/fail with rich traces
- Compare agents, prompts, models
Who it's for
Teams whose best documentation lives in someone's head.
Knowledge workers across the org. Wherever the way work gets done lives in a senior IC's muscle memory — or scrolled off the bottom of a Slack channel two months ago.
Grade coding agents against your real review, deploy, and on-call flows — not a synthetic benchmark.
Capture the runbooks that live in oncall's head, before they leave the team.
See the workflows your tooling never modeled, then automate the parts that are worth automating.
Quantify how your top reps prep, follow up, and close — and teach the agent to do the same.
For analysis-heavy teams: capture the patterns behind a thesis, the way an analyst actually builds one.
If knowledge lives in your people, devtail probably applies. We'd like to hear about it.
Security & privacy
Your team's behavior is your data. We treat it that way.
devtail runs on your devices and stores observations in your infrastructure. We capture the shape of work — the apps, windows, and command boundaries — never what was typed inside them.
On-device redaction
Screen content, keystroke contents, and clipboard data never leave the device.
Self-hosted data plane
Run the storage layer in your own VPC. We never touch raw events.
Audited & auditable
Per-user pause, export, and delete. Full audit trail of every read.
SOC 2 & SSO
SOC 2 Type II in progress. SAML SSO, SCIM provisioning, and granular roles.
Get started
Bring your team's real workflows into your eval suite.
We're onboarding a small number of design partners. If your team is shipping agents into production — or thinking about it — we'd like to talk.
Or reach us directly at hello@devtail.dev