X402 Listing Monitor MCP server
{
"mcpServers": {
"acjlabs-x402-listing-monitor": {
"type": "http",
"url": "https://x402-listing-monitor.acjlabs.com/mcp"
}
}
}{
"mcpServers": {
"acjlabs-x402-listing-monitor": {
"type": "http",
"url": "https://x402-listing-monitor.acjlabs.com/mcp"
}
}
}{
"mcpServers": {
"acjlabs-x402-listing-monitor": {
"type": "http",
"url": "https://x402-listing-monitor.acjlabs.com/mcp"
}
}
}{
"servers": {
"acjlabs-x402-listing-monitor": {
"type": "http",
"url": "https://x402-listing-monitor.acjlabs.com/mcp"
}
}
}{
"mcpServers": {
"acjlabs-x402-listing-monitor": {
"type": "http",
"url": "https://x402-listing-monitor.acjlabs.com/mcp"
}
}
}file .mcp.json (in your project root)file claude_desktop_config.jsonfile ~/.cursor/mcp.jsonfile .vscode/mcp.jsonfile ~/.codeium/windsurf/mcp_config.jsonversion 0.1.0
What it does
An MCP server that monitors whether x402 Bazaar resources remain discoverable in Coinbase CDP's public discovery catalog. It polls the catalog on a schedule and flags when resources drop or reappear, with durable history of state changes. Intended for x402 sellers who need to confirm their registered resources stay listed.
- Check whether your x402 resources are currently listed in the Bazaar discovery catalog for a given payTo address.
- Register your resources for scheduled six-hourly polling and receive alerts when listings drop or recover.
- Query your registration status and view the history of recent state changes and alerts for your resources.
Tools this server exposes
| Tool | Does |
|---|---|
| check_listing_health | Checks whether a set of x402 Bazaar resource URLs are currently listed under a given payTo address in the public discovery catalog. |
Before you enable it
An MCP server runs with whatever access you give it. Start with a development account rather than production, and check which tools the server exposes before you let an agent call them unattended.