Why do we need agent url in the AgentCard when we already provide the url while registering the agent?

[sreejit-a]

We need to provide the url of the agent while registering the agent to the client. So, why does the AgentCard need to have another field that needs to capture the agent url ?

Docs: https://google.github.io/A2A/#/documentation?id=representation

The cli agent in the repository accepts the the host agent url while starting up, but then for all tasks, it uses the url in the AgentCard.

Utilizing the protocol is challenging when the agent must be governed behind an APIM - particularly for third-party agents - if the AgentCard’s URL property cannot be modified.