Tools
strata19.read_evidence_artifact
Requires a human surface tool
What it does
Widget-only: returns a base64 byte range of one recording or visual-check screenshot listed by a verification request. Registered outside tools/list and refused to any call not originating from the embedded workspace; recording and screenshot bytes never belong in model context.
When to use it
Use when: "play this recording" — but from the Proof RecordingViewer, never from a model (the viewer calls it to play a recording)
Also use when: never — there is no model-side use of artifact bytes
When not to use it
you are a model: use strata19.get_verification_request for the metadata (digests, sizes, chapters); the bytes are not available to you
Availability
| Tier | Requires a human surface |
| Lifecycle | Live |
| Taught by | no packaged skill teaches this tool |