Proofslip

What is Proofslip?

Proofslip is an MCP server that provides ephemeral verification receipts for agent workflows. Agents create receipts to prove actions happened, and then other agents verify these receipts before acting. It prevents duplicates, stale approvals, and unsafe retries in automated workflows.

How to use Proofslip?

Sign up for a free API key using the signup tool. After signing up, configure your agents to create receipts for actions and verify receipts from other agents before proceeding.

Key features of Proofslip

• Ephemeral receipts that expire in 24 hours.
• Prevents duplicate actions and stale approvals.
• Ensures safe retries by verifying receipts.
• Free API with simple signup.
• Designed for agent-to-agent verification.

Use cases of Proofslip

• An agent verifies a prior action before starting a new task.
• Preventing duplicate payments or order submissions.
• Ensuring approvals are current and not expired.
• Coordinating multi-agent workflows with proof of action.
• Auditing agent actions through verifiable receipts.

FAQ from Proofslip

How long do receipts remain valid?

Receipts expire in 24 hours, preventing stale approvals and unsafe retries.

How do I get started with Proofslip?

Sign up for a free API key using the signup tool.

Can Proofslip prevent duplicate actions?

Yes, it prevents duplicates by requiring verification of receipts before acting.

Is there a cost to use Proofslip?

The API is free; sign up with the signup tool.

What happens if a receipt is lost or expired?

Expired receipts cannot be used for verification, so agents must create new receipts for the action.