Runfile is the flight recorder for AI agents — a tamper-evident record of every prompt, tool call, retrieval, approval and refusal, signed and replayable for the auditors who’ll ask what happened.
Agents already approve loans, route claims and move money. Sooner or later a regulator, a court or an auditor will ask to see exactly what happened, and an ordinary log can’t prove it hasn’t been changed.
An AI agent turns down a loan, a person signs off on it, and everything looks fine.
“Show us every step the system took on application #4812, who approved it, and prove the record hasn’t been changed.”
Response due in 14 daysMonths later, a regulator asks for proof: every input, every step and every approval.
Ordinary logs can be edited or deleted without leaving a trace, so they prove nothing.
Someone quietly edits who approved the loan. Watch what each kind of log can tell you afterwards.
The edit leaves no trace. As evidence, this log is worthless.
Caught instantly. Anyone can re-check the seal without having to trust us.
“A mutable log has evidentiary value of zero before a regulator.”
“Reconstruct, for any decision, the prompt, model version, retrieved documents and any human override.”
“Automatic recording of events over the lifetime of the system.”
Scroll to send a single credit-review run through the pipeline: captured at the SDK, sealed into a Merkle root, published to a public log, then verified offline.
The SDK records every prompt, tool call, retrieval, guardrail and human approval as it happens.
The capture SDK is open-source, OpenTelemetry-compatible and free to inspect. The platform that signs, stores and explains the data is closed-source SaaS — so we can stand behind chain of custody. Nothing about your runtime changes.
Auditors don’t want a Grafana login. They want a PDF they can email, a JSONL they can grep, and a binary they can run to confirm nothing has moved.
Point at a reader to see what they check
Live for eight years.
Live.
SR 11-7 successor, in force.
AI Act high-risk date fixed — no longer standards-conditional.
The window to be ready is now.
421days to go
We’re working with a small set of design partners across US, UK and EU regulated finance. If you’re the CCO, Head of AI Risk or Head of Internal Audit at a bank, insurer or asset manager — come talk to us.