Verify Agent Output

Establish verifiable delivery between agents. When one agent produces output that another agent consumes — or that a human relies on — the handoff needs more than "looks good." This skill codifies the practice of defining checkable expectations before work begins, generating evidence as a side effect of doing the work, and validating deliverables against external anchors rather than self-assessment. The core principle: fidelity cannot be measured internally. An agent cannot reliably verify its own compressed output; verification requires an external reference point.

When to Use

• A multi-agent workflow hands deliverables from one agent to another
• An agent produces external-facing output (reports, code, deployments) that a human will rely on
• An agent summarizes, compresses, or transforms data and the summary must faithfully represent the source
• A team coordination pattern requires structured handoff validation between members
• You need to establish trust boundaries — deciding what requires verification vs. what can be trusted
• An audit trail is required for compliance or reproducibility

Inputs

• Required: The deliverable to verify (file, artifact, report, or structured output)
• Required: The expected outcome specification (what "done" looks like)
• Optional: The source material (for fidelity checks on summaries or transformations)
• Optional: Trust boundary classification (cross-agent, external-facing, internal)