adversarial-proof-gate

name	adversarial-proof-gate
description	Build and verify acceptance evidence before declaring meaningful agent work complete.

Adversarial Proof Gate

Use this skill before final handoff for meaningful changes, especially user-facing behavior, data/auth, billing, deploys, analytics, automation, integrations, security, or workflow changes.

Steps

1. State the user-facing claim.
2. Identify the top three realistic ways the claim could still be wrong.
3. Map each failure mode to the cheapest reliable proof source.
4. Run the proof or create a narrow verifier if no proof exists.
5. Include at least one negative or adversarial case for high-risk categories.
6. Record residual risk instead of hiding proof gaps.

Output

Return:

• claim
• files changed
• commands run and results
• top three failure modes
• evidence for each
• adversarial or negative case
• residual risk

Do not use looks good, tested locally, or done as evidence.