| name | fraimz |
| description | create a fraimz, make fraimz, prove it works, frame proof, PR proof, validate experience, e2e evidence, fraimz.html. The full fraimz loop — frame the claim, drive the real app via CDP, validate/repair, output fraimz.html. Use whenever a task ends with "please create a fraimz" or any change needs end-to-end proof. |
Skill: fraimz
fraimz is the canonical proof artifact: a single fraimz.html
(evals/results/<run-id>/fraimz.html) with one frame per step. Each frame binds
a claim, the action the end user took, the assertion that witnesses
the side effect, a voiceover that narrates the step, and a validated
screenshot. It is the thing a human looks at (and listens to) to understand,
at a glance, that an experience works.
This skill owns the prove-it loop. In the demo-driven journey (voiceover
skill: script → worktree → build → fraimz → PR) this is how the build is
verified; when orchestrating, the orchestrator drives this loop and delegates
code repairs to the executor.
Every fraimz is a demo
A fraimz is never a bare test log. The flow declares which demo it is via
kind in evals/flows/<id>.flow.mjs:
kind: "user-facing" — the end user is the protagonist; the frames walk
a real journey through the UI. Default for any feature, fix, or UX change.
kind: "internal" — for changes with no visible surface (perf, storage
swaps, invariants, refactors): the frames demonstrate the internal claim in
a way a reviewer can still follow. Terminal/tooling demos may set
requiresApp: false to run without CDP; their frames carry claims,
assertions, and ctx.output command output instead of screenshots (see
evals/flows/voiceover-first-dx.flow.mjs).
If you cannot say which of the two your fraimz is, you have not framed the
experience yet.
Voiceover first
The narration is the spec and it comes BEFORE the flow (and ideally before the
feature) — alignment and approval belong to the voiceover skill /
/voiceover. The approved script lives at evals/voiceovers/<flow-id>.md;
pnpm fraimz scaffold <flow-id> generates the flow from it, and the runner
fails any flow whose narration drifts from the approved file. Every
ctx.prove must carry a voiceover (one or two spoken-style sentences about
what the viewer sees, never implementation); frames without one are flagged in
the artifact — treat that as a failure for any flow you touch.
When this applies
Make fraimz whenever a change can alter behavior observable outside the
process: filesystem, runtime DB, server endpoints, sessions, config,
provisioning, cloud sync, network. Also for changes you expect to be inert
(refactors, renames, dead-code removal): the job is then to prove the canonical
core flow is unchanged — open the app → write a message → get a response →
close → reopen with the session intact (evals/flows/core-flow.flow.mjs).
Pure docs/comments and types-only changes with no runtime path may skip — but
say so explicitly.
The loop
Never report success from a click or a return value alone. Every meaningful
step is: observe → act → observe → assert — and repair before verdict.
- Frame the experience as a one-line claim ("user can do X and sees Y")
and pick the demo kind. State both back before proceeding.
- Get the script. Approved voiceover at
evals/voiceovers/<id>.md
(via the voiceover skill), then pnpm fraimz scaffold <id> — or reuse an
existing flow in evals/flows/.
- Code the flow. The end user is the protagonist (driven via CDP);
REST/DB/filesystem checks only witness the side effects. Every meaningful
step uses
ctx.prove("claim", { voiceover, action, assert, screenshot }).
- Drive it for real. Launch the app (see below), then
pnpm fraimz --flow <id> --cdp-url <electron-cdp-url>.
- Validate, repair, repeat. If a frame does not support its claim (wrong
route, error state, missing text, stale dialog, duplicate image, missing
voiceover), fix the visible state or the code and rerun until every claim
has a passing assertion, a narrated voiceover, and a valid screenshot.
- Verdict, on the PR. The run writes
fraimz.html + report.md /
report.json to evals/results/<run-id>/; post it as a PR comment with
pnpm fraimz --flow <id> --pr [number] (--pr alone targets the current
branch's PR). Report Passed only when fraimz exists and every claim is
backed by an observable assertion; otherwise Incomplete / Failed,
stated honestly with repro steps.
Driving the real app
Local Electron (fastest for a worktree you changed):
OPENWORK_ELECTRON_REMOTE_DEBUG_PORT=9826 pnpm dev
pnpm fraimz --flow <id> --cdp-url http://127.0.0.1:9826
Daytona sandbox (isolated, VNC-visible; see daytona-electron-test):
bash .devcontainer/test-on-daytona.sh <branch> --artifacts-volume
pnpm fraimz --flow <id> --cdp-url <printed-electron-cdp-url>
The runner default-probes :9825 (Daytona) then :9823 (local pnpm dev);
pass --cdp-url for any other port. pnpm evals --all --stack den brings up
the cloud stack for env-gated cloud flows.
Pitfalls (learned the hard way)
- Target the right CDP page. A sandbox can expose several targets; ad-hoc
browser_eval defaults to the first — pass the OpenWork target_id when
probing manually.
__openworkControl readiness. Attaches after boot and resets on config
reload: ctx.waitFor("Boolean(window.__openworkControl)") before driving,
and re-wait after any "Reloading OpenCode config".
- Flows must be idempotent. A failed run can leave dialogs open or state
dirty; start steps by restoring the state you need (e.g. Escape a stale
dialog).
- Don't race streamed/debounced UI. Wait for the concrete artifact you
assert on (the rendered row), not for a spinner to disappear.
- Split reflow from measurement. First a
waitFor that returns true only
once the DOM actually reflowed, then a separate ctx.eval to measure.
- Screenshot validation takes arrays (
requireText: ["foo"],
rejectText: [...], hashIncludes: "/route"). A screenshot with no
validation metadata is a checkpoint, not proof.
- Assert the regression, not nice-to-haves. Prove what the change
guarantees; don't fail the run on a cosmetic extra the fix never promised.
- Eval-only seed affordances are fine behind
import.meta.env.DEV on
existing eval.* control actions; keep them out of production paths and say
so.
ctx.* helpers (the flow API)
ctx.eval, ctx.waitFor, ctx.waitForText, ctx.clickText, ctx.fill,
ctx.navigateHash, ctx.control(actionId, args), ctx.expectText,
ctx.expectNoText, ctx.expectHashIncludes, ctx.assert,
ctx.screenshot(name, { claim, voiceover, requireText, rejectText, hashIncludes }),
ctx.output(name, text), and the headline
ctx.prove("claim", { voiceover, action, assert, screenshot }).
Reference flow: evals/flows/session-search-grouped.flow.mjs.
Source of truth
evals/README.md — runner, flags, conventions, full ctx.* reference.
evals/flows/ — existing coded flows to reuse or pattern-match.
evals/voiceovers/ + evals/runner/voiceover.mjs — approved scripts,
parser, drift check, scaffolder; the voiceover skill owns the journey
around this loop.
daytona-electron-test (sandbox launch), daytona-flow-validator
(Daytona-native windows/xdotool), daytona-recording-artifacts (video).