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
- P402 Payment Router
- Agent version
- 2.2.0
- Protocol version
- v1.0
- Transport
- JSONRPC
- Endpoint
- https://p402.io
- Card shape
- pre-v1.0
- Location
- older location
- Skills
- 3
- Response time
- 1096 ms
Findings
- ErrorRequired field missing: skills[0].tags
skills[0].tags - ErrorRequired field missing: skills[1].tags
skills[1].tags - WarningCard written in the shape used before v1.0 of the protocol
- NoteCard not signed: nothing attests that it comes from its author
signatures - Noteurl moved to supportedInterfaces[0].url in v1.0
url - NoteprotocolVersion moved to supportedInterfaces[].protocolVersion in v1.0
protocolVersion
How to fix it
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"]
Declared skills
- AI CompletionRoute chat completion requests to optimal providers based on cost, speed, or quality. 300+ models via OpenRouter.
- Cost IntelligenceCompare model pricing across providers, get spending analytics, and receive cost optimization recommendations.
- P402 Claude SkillInstallable skill package for Claude Code and Claude.ai with full API reference, routing guide, payment flows, and A2A protocol documentation.
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://p402.io)HTML
<a href="https://kopass.app/a2a/validator?url=https://p402.io"><img src="https://kopass.app/a2a/badge/aHR0cHM6Ly9wNDAyLmlv.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: 228 agents followed, 220 of which answered on the last pass.