A2A Agent Card Cross-SDK Signature Conformance

Per-SDK verdict matrix for signed A2A Agent Cards: which signatures verify in each SDK.

Should I use this

Quality & Safety

B
Description quality
82%
Schema completeness
63%
Naming quality
100%
Poisoning risk
100%
Permission match
100%
Protocol compliance
100%

Based on automated analysis of tool definitions and protocol compliance.

Context Cost

~151Tokens (tool definitions)
~249 BTypical response size
Minimal attention impact (0.12% of 128k context)

This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.

Install

One-Click Install

Add this to your `claude_desktop_config.json` file:

{
  "mcpServers": {
    "a2a-agent-card-cross-sdk-signature-conformance": {
      "url": "https://textforagents.com/products/a2a-agent-card-cross-sdk-signature-conformance/mcp"
    }
  }
}

Remote endpoints

https://textforagents.com/products/a2a-agent-card-cross-sdk-signature-conformance/mcpstreamable-http

What it can do

Tool inventory

Tools (3)

🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
🟢check_card(card_url, card, jwks)

Run one cross-SDK signature conformance verdict check (trial or $0.05 x402 accounting applies).

Input Schema

{
  "type": "object",
  "properties": {
    "card_url": {
      "type": "string"
    },
    "card": {
      "type": "object"
    },
    "jwks": {
      "type": "object"
    }
  },
  "required": [
    "jwks"
  ]
}
🟢get_check(check_id)

Fetch one of your checks by id.

Input Schema

{
  "type": "object",
  "properties": {
    "check_id": {
      "type": "string"
    }
  },
  "required": [
    "check_id"
  ]
}
🟢list_watches

List your watches.

Input Schema

{
  "type": "object",
  "properties": {}
}

Community

Rate this Server

Evidence

Recent observations

verifiedversion not recorded3 tools