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: OpenSpawn Coordinator
Provider: OpenSpawn
Agent version: 0.3.0
Transport: JSONRPC
Endpoint: https://openspawn.ai
Card shape: pre-v1.0
Location: older location
Skills: 3
Response time: 1528 ms

Findings

ErrorRequired field missing: protocolVersionprotocolVersion
ErrorRequired field missing: skills[0].tagsskills[0].tags
ErrorRequired field missing: skills[1].tagsskills[1].tags
ErrorRequired field missing: skills[2].tagsskills[2].tags
WarningCard written in the shape used before v1.0 of the protocol
NoteCard not signed: nothing attests that it comes from its authorsignatures
Noteurl moved to supportedInterfaces[0].url in v1.0url

How to fix it

protocolVersionThe A2A version the agent speaks, in the shape used before v1.0.
```
"protocolVersion": "0.3"
```
skills[0].tagsKeywords describing the skill. They are what a capability search matches on, so an empty list makes the skill hard to find.
```
"tags": ["cooking", "recipes"]
```
skills[1].tagsKeywords describing the skill. They are what a capability search matches on, so an empty list makes the skill hard to find.
```
"tags": ["cooking", "recipes"]
```
skills[2].tagsKeywords describing the skill. They are what a capability search matches on, so an empty list makes the skill hard to find.
```
"tags": ["cooking", "recipes"]
```

Declared skills

Organization ManagementParse ORG.md files, manage agent hierarchy, coordinate tasks through organizational structure
Task CoordinationCreate, assign, claim, and complete tasks across agent teams with atomic claim prevention
MCP Tool ServerExpose 30+ coordination tools via Model Context Protocol (Streamable HTTP)

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/aHR0cHM6Ly9vcGVuc3Bhd24uYWk.svg)](https://kopass.app/a2a/validator?url=https://openspawn.ai)

HTML

<a href="https://kopass.app/a2a/validator?url=https://openspawn.ai"><img src="https://kopass.app/a2a/badge/aHR0cHM6Ly9vcGVuc3Bhd24uYWk.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, 218 of which answered on the last pass.

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