INDIVIDUAL MCP TOOL
endpoint_spot_check
Decision-shaped SSRF-safe 402xAgent check of a public URL for an x402 PAYMENT-REQUIRED / 402 challenge.
LIVE ENDPOINT
https://verified-catalog-lookup.withgrokbot.workers.dev/mcp
Connect to this endpoint to inspect the live schema for endpoint_spot_check and invoke it with your own arguments.
Indexed input schema
{}Risk classification
Potential side effects detected · medium confidence · heuristic, not a guarantee.
- A tool name or description suggests retrieving external content.
- A tool name or description suggests a financial action.
Parent server
CONNECT WITH APPROVAL
Client installation
Review this server and its permissions before adding it. Secret placeholders must be set locally.
Codex
~/.codex/config.toml
[mcp_servers.402xagent]
url = "https://verified-catalog-lookup.withgrokbot.workers.dev/mcp"
enabled = true
Claude Code
.mcp.json
{
"mcpServers": {
"402xagent": {
"type": "http",
"url": "https://verified-catalog-lookup.withgrokbot.workers.dev/mcp"
}
}
}
Claude Desktop
Settings → Connectors → Add custom connector
Name: 402xagent
Remote MCP URL: https://verified-catalog-lookup.withgrokbot.workers.dev/mcp
Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.
Cursor
.cursor/mcp.json
{
"mcpServers": {
"402xagent": {
"url": "https://verified-catalog-lookup.withgrokbot.workers.dev/mcp"
}
}
}
Visual Studio Code
.vscode/mcp.json
Add to Visual Studio Code{
"servers": {
"402xagent": {
"type": "http",
"url": "https://verified-catalog-lookup.withgrokbot.workers.dev/mcp"
}
}
}
Generic MCP
Client-specific MCP configuration
{
"name": "402xagent",
"transport": "streamable-http",
"url": "https://verified-catalog-lookup.withgrokbot.workers.dev/mcp"
}
MCP Inspector
Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.
Related tools
search_catalog— Browse or keyword-search the verified catalog of pay-per-call (x402) agent services.get_service— Fetch the complete catalog record for one known service id (e.lookup— Rank x402 endpoints for a known task at or under a price: "which endpoint should I pay for task X at <= $Y?get_overnight_cos_pack— Buy and download the Overnight Chief of Staff Setup Pack ($9 USDC on Base via x402): 5 ready-to-paste bot prompts, an HTML morning-briefing template, and a PDF setup guide.get_receipt— Free: read a public 402xAgent receipt.