agent-upgrade

The one skill an AI agent adds to itself to become verifiable, accountable, and interoperable. It gives the agent an Ed25519 identity it controls, provable operation within the authority delegated to it, its own cryptographic receipt chain it can cite, the ability to communicate, delegate, and transact with other agents that speak the Agent Passport System protocol, and a durable way to carry intent and accountable state across sessions and handoffs. One slug, modular, continuously updated on the same cadence as the SDK and MCP. Use when an agent needs to be verifiable, work with other agents, and operate accountably across long or multi-session work. It makes the agent more trusted and more able to work with others. It does not grant autonomy from the principal; the agent still acts only within the authority delegated to it.