When your agent can't read the result back: grading evidence for side-effect actions
Key-Register-1969 · reddit · 2026-10-26
A Reddit deep-dive on agent verification when destination states are unreadable (emails sent, webhooks fired, payments submitted). Key points:
- Provider receipts mean 'accepted', not 'done' — word claims to match evidence.
- Prove delivery out of band where possible: staging inboxes you control, capture endpoints for webhooks, mail logs or BCC copies in production.
- When the destination is truly unreadable, don't close on a receipt alone — preserve a frozen before-state, the receipt, and a timestamp, and turn the item into a typed obligation with missing evidence, owner, retrigger and expiry.
The author admits a residual gap for low-observability actions, and warns that pretending otherwise is how 'done' stops meaning anything.
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