Your agent card points somewhere dead

It concerns A2A, the agent discovery. Agent-to-Agent. It lets other agents find and talk to any agent you publish.

Most agents fail at this point. The few that find a way round it spend more time and model calls doing so, and may give up before checkout.

Point the Agent Card's url at the live A2A endpoint. A card naming a dead endpoint is worse than no card: it looks reachable and is not.

Run the check that reported A2A_ENDPOINT_UNREACHABLE again after the change. The scan needs no account; an issue found during an AI shopping test needs that test run again.

$ npx @tragent/cli scan https://your-store.com

• Your agent card is at the old address
• Your agent card cannot be read