MCP server

A2A Agent Card Cross-SDK Signature Conformance

com.textforagents/a2a-agent-card-cross-sdk-signature-conformance

Checked 28 Oct 2026, 09:03 UTC · Connected to it and listed its tools

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

Website

At a glance

Type

MCP server

Publisher

textforagents.com (verified by the MCP Registry)

Status

Working at last check

Tools

3

Token cost

About 160 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

28 Oct 2026, 09:03 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http a2a-agent-card-cross-sdk-signature-confo https://textforagents.com/products/a2a-agent-card-cross-sdk-signature-conformance/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.a2a-agent-card-cross-sdk-signature-confo]
url = "https://textforagents.com/products/a2a-agent-card-cross-sdk-signature-conformance/mcp"

Gemini CLI

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

Cursor

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

VS Code

{"servers":{"a2a-agent-card-cross-sdk-signature-confo":{"type":"http","url":"https://textforagents.com/products/a2a-agent-card-cross-sdk-signature-conformance/mcp"}}}

Antigravity

agy mcp add a2a-agent-card-cross-sdk-signature-confo https://textforagents.com/products/a2a-agent-card-cross-sdk-signature-conformance/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"a2a-agent-card-cross-sdk-signature-confo","server_url":"https://textforagents.com/products/a2a-agent-card-cross-sdk-signature-conformance/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"a2a-agent-card-cross-sdk-signature-confo","server_url":"https://textforagents.com/products/a2a-agent-card-cross-sdk-signature-conformance/mcp"}

Tools

• check_card ~80 tokens
  Run one cross-SDK signature conformance verdict check (trial or $0.05 x402 accounting applies).
• get_check ~49 tokens
  Fetch one of your checks by id.
• list_watches ~31 tokens
  List your watches.

Browse

• Invoicing and accounting

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