Evidence Envelopes

An evidence envelope records a single decision evaluation in MIDAS. It is the authoritative record of what happened, on what authority, and why.

Envelope contents

A minimal envelope contains:

• Header — envelope ID, schema version, signing hash, parent envelope (if amended).
• Subject — agent, surface, business service.
• Authority — the profile and grant that applied at the time of evaluation.
• Policy — the effective fail-mode policy version.
• Input — the decision inputs (with sensitive fields redacted).
• Outcome — allowed / denied / escalated, with the rule that fired.
• Timestamps — when the request arrived, when the outcome was emitted.
• Diagnostics — any informational records emitted alongside the outcome.

Finding an envelope

The workbench Evidence tab lists recent envelopes for the active service. You can also paste an envelope ID into the search input to jump to a specific record.

Where envelopes go

Envelopes are persisted to the configured evidence store. The Explorer reads them; nothing in the Explorer mutates an envelope.