Returns the authoritative basic-catalog JSON Schema (components, functions, theme) for the requested A2UI version. Use this to validate agent output or bootstrap a custom catalog.
This page documents the MCP tool findutils:a2ui_basic_catalog.
Call it over MCP
Tool name findutils:a2ui_basic_catalog
· no API keys · 120 requests/min per IP
Claude Code
claude mcp add findutils --transport http https://mcp.findutils.com/ Claude Desktop — claude_desktop_config.json
{
"mcpServers": {
"findutils": {
"url": "https://mcp.findutils.com/"
}
}
} Raw JSON-RPC (any MCP client) — verified example
curl -X POST https://mcp.findutils.com/ \
-H "Content-Type: application/json" \
-d '{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/call",
"params": {
"name": "a2ui_basic_catalog",
"arguments": {
"version": "v0.9"
}
}
}' Input schema
Fetch this tool's machine-readable schema from
GET https://api.findutils.com/api/tools/, or call tools/list on the MCP server.
Example arguments (verified)
{
"version": "v0.9"
} More Developer tools
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Computes a structural diff between two A2UI JSONL payloads: surfaces added/removed, components added/removed/changed (by id), data-model pat
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Returns one or more canonical A2UI JSONL examples matching a pattern (form, list, wizard, modal, chat, dashboard, checkout, typeahead, mcp-c
A2ui Prompt
Generates a drop-in LLM system prompt that teaches the model to output valid A2UI JSONL: includes the basic-catalog component / function lis
A2ui Spec
Returns A2UI protocol documentation for a given spec version and section.
A2ui Validate
Validates a JSONL A2UI payload against the basic catalog (or a custom catalog) and returns any errors, warnings, or info messages with exact
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