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.

Card unusable as it stands

An agent reading this card cannot act on it.

What the card declares

Name: A2AC Enterprise Agent Coordination
Card shape: v1.0
Location: standard location
Skills: 3
Response time: 519 ms

Findings

ErrorRequired field missing: versionversion
ErrorRequired field missing: supportedInterfaces[0].urlsupportedInterfaces[0].url
ErrorRequired field missing: supportedInterfaces[0].protocolBindingsupportedInterfaces[0].protocolBinding
ErrorRequired field missing: supportedInterfaces[0].protocolVersionsupportedInterfaces[0].protocolVersion
ErrorRequired field missing: supportedInterfaces[1].urlsupportedInterfaces[1].url
ErrorRequired field missing: supportedInterfaces[1].protocolBindingsupportedInterfaces[1].protocolBinding
ErrorRequired field missing: supportedInterfaces[1].protocolVersionsupportedInterfaces[1].protocolVersion
ErrorRequired field missing: provider.organizationprovider.organization
NoteCard not signed: nothing attests that it comes from its authorsignatures

How to fix it

versionThe version of the agent itself, not of the protocol.
```
"version": "1.0.0"
```
supportedInterfaces[0].urlThe address the agent answers on. HTTPS in production.
```
"url": "https://api.example.com/a2a/v1"
```
supportedInterfaces[0].protocolBindingThe transport at this address: JSONRPC, GRPC or HTTP+JSON.
```
"protocolBinding": "JSONRPC"
```
supportedInterfaces[0].protocolVersionThe A2A version this interface speaks. Use the latest minor version of your major one.
```
"protocolVersion": "1.0"
```
supportedInterfaces[1].urlThe address the agent answers on. HTTPS in production.
```
"url": "https://api.example.com/a2a/v1"
```
supportedInterfaces[1].protocolBindingThe transport at this address: JSONRPC, GRPC or HTTP+JSON.
```
"protocolBinding": "JSONRPC"
```
supportedInterfaces[1].protocolVersionThe A2A version this interface speaks. Use the latest minor version of your major one.
```
"protocolVersion": "1.0"
```

provider.organizationThe name of the organization behind the agent.

"provider": {"organization": "ACME", "url": "https://acme.example"}

Declared skills

Coordinate AgentsRoute governed tasks across autonomous agents, tools, and foundation models while preserving state through cryptographic Cubes.
- coordination
- workflow
- a2a
- swarm
Forever Agent IdentityMaintain persistent agent identity, memory, goals, and verified history across model changes and infrastructure restarts.
- identity
- memory
- cubes
- durability
Seal ReceiptRecord tamper-evident, SHA-256 hash-linked receipts for assignments, handoffs, approvals, and completed actions.
- receipt
- audit
- verification
- compliance

Show the result

This badge follows your readings: it changes when your card changes. Paste it in your README.

Markdown

[![A2A card](https://kopass.app/a2a/badge/aHR0cHM6Ly9hMmFjLmFp.svg)](https://kopass.app/a2a/validator?url=https://a2ac.ai)

HTML

<a href="https://kopass.app/a2a/validator?url=https://a2ac.ai"><img src="https://kopass.app/a2a/badge/aHR0cHM6Ly9hMmFjLmFp.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: 225 agents followed, 219 of which answered on the last pass.

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