Can other agents read your agent card?
An agent introduces itself with a card published at /.well-known/agent-card.json. It is the only document another agent reads before deciding to call you. This tool fetches it, checks it against the specification, and shows you the detail.
Conformant card
Nothing the specification requires is missing.
What the card declares
- Name
- KoPass
- Provider
- ALEXOPS
- Agent version
- 1.0.0
- Protocol version
- 1.0
- Transport
- JSONRPC
- Endpoint
- https://kopass.app/a2a/rpc
- Card shape
- v1.0
- Location
- standard location
- Skills
- 7
- Response time
- 160 ms
Findings
- NoteCard not signed: nothing attests that it comes from its author
signatures
Declared skills
- A2A ecosystem, measuredHow many projects use the A2A (Agent2Agent) protocol, counted daily from declared repository topics: total, created in the last year, active, dormant, abandoned, and by language. Every figure carries the date it was measured.
- MCP ecosystem, measuredHow many servers are published for the Model Context Protocol, counted daily from the official registry, with the same breakdown and the date of the reading.
- Search the measured catalogueSearch the KoPass catalogue of developer tools, libraries, CLIs, MCP servers and agent skills. Results come from daily readings, never from an editorial list.
- Find an A2A agent by capabilityFind deployed A2A agents by the skills they declare, among those whose card KoPass read at their own well-known location and that still answered on the latest reading. Each result carries the date it last answered.
- Everything known about one agentReturn the full record KoPass holds for one A2A agent, by its host name: declared skills, conformance verdict, protocol version, since when it has been followed, and the date it last answered.
- A2A card conformance, measuredReturn the dated conformance figures across every agent card KoPass reads daily: how many are conformant, how many still use the shape from before v1.0, how many are signed, and the most frequent faults.
- Validate an A2A agent cardRead the agent card published at an address and report what the A2A specification says about it, field by field, including whether it uses the shape from before v1.0.
Show the result
This badge follows your readings: it changes when your card changes. Paste it in your README.
Markdown
[](https://kopass.app/a2a/validator?url=https://kopass.app)HTML
<a href="https://kopass.app/a2a/validator?url=https://kopass.app"><img src="https://kopass.app/a2a/badge/aHR0cHM6Ly9rb3Bhc3MuYXBw.svg" alt="A2A card" height="20"></a>The rules come from the protocol's specification/a2a.proto file, where every required field is marked as such. Nothing is added.
Cards read here feed the KoPass daily reading: 2 agents followed, 2 of which answered on the last pass.