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: BuyWhere
Provider: BuyWhere
Agent version: 1.0.0
Transport: JSONRPC
Endpoint: https://buywhere.ai
Card shape: pre-v1.0
Location: standard location
Skills: 4
Response time: 227 ms

Findings

ErrorRequired field missing: protocolVersionprotocolVersion
WarningdefaultInputModes[0] is not a media type in the form type/subtypedefaultInputModes[0]
WarningdefaultOutputModes[0] is not a media type in the form type/subtypedefaultOutputModes[0]
WarningdefaultOutputModes[1] is not a media type in the form type/subtypedefaultOutputModes[1]
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"
```

Declared skills

Product SearchSearch 370M+ products worldwide by keyword, category, price range, merchant, country, and deliver_to for deliverable-first ranking.
- e-commerce
- search
- products
- availability
Location-Aware ShoppingUse deliver_to=<ISO country> to rank products your end user can actually receive; every result includes availability: local, ships_to_you, unavailable, or unknown.
- delivery
- availability
- cross-border
- ranking
Cross-Storefront Product ComparisonCompare products, prices, attributes, and availability across 900,000+ independent storefronts worldwide.
- comparison
- price-comparison
- affiliate
- merchant
Deal FinderFind discounted products and price drops across the global catalog, with filters for category, currency, country, and deliverability.
- deals
- discounts
- pricing

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/aHR0cHM6Ly9idXl3aGVyZS5haQ.svg)](https://kopass.app/a2a/validator?url=https://buywhere.ai)

HTML

<a href="https://kopass.app/a2a/validator?url=https://buywhere.ai"><img src="https://kopass.app/a2a/badge/aHR0cHM6Ly9idXl3aGVyZS5haQ.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: 229 agents followed, 223 of which answered on the last pass.

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