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A2A Agent Card Cross-SDK Signature Conformance MCP Server

answering

A2A Agent Card Cross-SDK Signature Conformance is answering right now. Last checked 7 min ago. It exposes 3 tools.

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

Uptime history 70 hours of history
70 hours agonow
100.0%
Uptime 24h
91 of 91 checks
3
Tools
read from the server
320 ms
Response time
average over 24h
open, no key
Access
streamable-http

Nothing serious here today

Today is the operative word: we check A2A Agent Card Cross-SDK Signature Conformance every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 7 min ago.

run in your terminal
claude mcp add a2a-agent-card-cross-sdk-signature-conformance --transport http https://textforagents.com/products/a2a-agent-card-cross-sdk-signature-conformance/mcp
Settings → Connectors → Add custom connector, then paste this address
https://textforagents.com/products/a2a-agent-card-cross-sdk-signature-conformance/mcp
~/.codex/config.toml
[mcp_servers.a2a-agent-card-cross-sdk-signature-conformance]
url = "https://textforagents.com/products/a2a-agent-card-cross-sdk-signature-conformance/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "a2a-agent-card-cross-sdk-signature-conformance": {
      "url": "https://textforagents.com/products/a2a-agent-card-cross-sdk-signature-conformance/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "a2a-agent-card-cross-sdk-signature-conformance": {
      "type": "http",
      "url": "https://textforagents.com/products/a2a-agent-card-cross-sdk-signature-conformance/mcp"
    }
  }
}

Available tools 3

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

card
check_card
Run one cross-SDK signature conformance verdict check (trial or $0.05 x402 accounting applies).
get
get_check
Fetch one of your checks by id.
watches
list_watches
List your watches.

Endpoints

URLTransportStateLatencyChecked
https://textforagents.com/products/a2a-agent-card-cross-sdk-signature-conformance/mcp streamable-http answering 317 ms 7 min ago

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A2A Agent Card Cross-SDK Signature Conformance — questions

Answers built from our own checks of this server.

What can A2A Agent Card Cross-SDK Signature Conformance do?
It exposes 3 tools, read directly from the server on our last check. Among them: check_card, get_check, list_watches. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is A2A Agent Card Cross-SDK Signature Conformance working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 320 ms. The bar chart above shows every period we have measured.
How do I connect A2A Agent Card Cross-SDK Signature Conformance?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does A2A Agent Card Cross-SDK Signature Conformance need an API key?
No. A2A Agent Card Cross-SDK Signature Conformance completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 3 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is A2A Agent Card Cross-SDK Signature Conformance?
It answers our handshake in 320 ms on average, which is faster than 51% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.