How it relates to AgenID
An Agent Card is primarily about capability discovery: what an agent can do and how to call it. An AgenID agent manifest is a narrower statement about who operates the agent, its declared purpose and its disclosure behavior, signed by the operator and resolvable by anyone. The two can coexist; a card could reference an AgenID identifier, and a counterparty could resolve it. See the comparison.
A practical pattern is to publish both: the Agent Card for discovery, and an AgenID identifier for an operator statement a counterparty can resolve and re-verify with Ed25519 over RFC 8785 canonical JSON.
Why it matters
Discovery tells an agent where to send a task. A relying party still needs to know who stands behind the agent at the other end, from a source it can check independently of the card's host.
The reference deployment at agenid.com issues nothing above L1_REGISTERED today. L2 and higher require a VerificationAssertion signed by a root authority key, and that key has not been created yet.
What it does not mean
Neither an Agent Card nor an AgenID says what an agent is allowed to do on a particular person's behalf. Listing a skill is not authorization, and AgenID v1.1.1 defines no signed authorization object.
An AgenID level also describes only what was checked about the operator. It says nothing about whether the skills listed on a card work as described.