ARO · Operational
A2A agent card
A2A agent card is an Agent Readiness Optimization check in the Auth and trust group.
Version agent-readiness-2026-10
What is this benchmark?
A2A agent card
A2A agent card is an Agent Readiness Optimization check in the Auth and trust group.
Why it matters
An agent card publishes identity and capabilities for agent-to-agent calls.
How SiteGlue evaluates it
HTTP request to a well-known or published URL. Spec: https://google.github.io/A2A/. Catalog agent-readiness-2026-10.
- Passing criteria
- The published signal for A2A agent card is present and readable.
- Failing criteria
- The scan requested the signal and it was missing, blocked, or malformed.
- Not verified
- The check was not selected, the probe did not run, or evidence was inconclusive. Not verified is never scored as 0.
- Not applicable
- Not applicable when the business has no corresponding surface (for example commerce protocols on a site with no cart).
Scoring weight: 1. Evidence: Public HTTP, HTML, or DNS evidence for A2A agent card. No private credentials.
Example results
Pass
Agents can read a valid A2A agent card signal on the public site.
Fail
A2A agent card is missing, blocked, or not machine-readable.
Recommended fixes
- An A2A agent card is a later product decision. This row does not generate one.
Related benchmarks
Frequently asked questions
Does a missing optional check lower my ARO score?
Yes, if the check is applicable and failed. Not verified items are excluded.
Is this a live ChatGPT test?
No. ARO is a website audit. Optional live walks are Test With AI Agents.
Run the ARO audit.