Koskamo

Verify agent action authorization and execution

Independent verification of an agent's authorized intent, execution outcome, and cryptographic proof of integrity via Merkle inclusion.

How it works

Read-onlyOperations and infrastructure

The agent retrieves the commitment hash from a previous tool execution. It then calls the verify_commitment tool with this hash. The server returns the signed governance envelope, gate results, signature, and Merkle proof. The user or auditor checks that the execution matches the authorized intent and that the transparency log confirms the action was not altered.

Prompt

Paste this into an agent that has the servers below connected. Adjust the names and dates to your own.

Prompt for Verify agent action authorization and execution
Verify the integrity of the last executed tool call by checking its commitment hash against the transparency log.

MCP servers it needs

Source

The vendor page this playbook is drawn from, and the passage that supports it.

Request GET /verify?commitment={hash} Returns Signed governance envelope Gate results Hybrid Ed25519+SLH-DSA signature Merkle inclusion proof Tree root hash
Sovereign MCP Gateway — Governed Tool Invocation for Autonomous Agents

Each playbook is drawn from the vendor page it cites and reviewed by Koskamo before it is published. Koskamo does not run these servers or your agent: check what each tool will do before you let it act on your accounts.