mcp-x402 — MCP server for agents with autonomous USDC/RLUSD payments is a remote MCP server that gives an AI agent 3 tools, among them sml_discover, sml_status, x402_contract. It answers at https://mcp-x402.onrender.com/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 6 of 6 times since 11 September 2026; the last check, on 21 October 2026, succeeded.
85+ pay-per-call MCP tools: trading, federal grants/contracts, SEC, FTD. x402 USDC/RLUSD. No keys.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
sml_discover | Find the x402 Gateway contract and where to inspect fresh payment requirements. FREE. |
sml_status | Check the public x402 Gateway identity and canonical payment rail. FREE. |
x402_contract | Inspect the canonical x402 payment contract. Returns network, USDC asset, payTo, headers, and the rule for resolving fresh target requirements. FREE. |
Every block below points at https://mcp-x402.onrender.com/mcp. Pick your client and copy.
claude mcp add --transport http mcp-x402-mcp-server-for-agents-w https://mcp-x402.onrender.com/mcp
{
"mcpServers": {
"mcp-x402-mcp-server-for-agents-w": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://mcp-x402.onrender.com/mcp"]
}
}
}{
"mcpServers": {
"mcp-x402-mcp-server-for-agents-w": {
"url": "https://mcp-x402.onrender.com/mcp"
}
}
}{
"servers": {
"mcp-x402-mcp-server-for-agents-w": {
"type": "http",
"url": "https://mcp-x402.onrender.com/mcp"
}
}
}{
"context_servers": {
"mcp-x402-mcp-server-for-agents-w": {
"url": "https://mcp-x402.onrender.com/mcp"
}
}
}{
"mcpServers": {
"mcp-x402-mcp-server-for-agents-w": {
"serverUrl": "https://mcp-x402.onrender.com/mcp"
}
}
}{
"mcpServers": {
"mcp-x402-mcp-server-for-agents-w": {
"url": "https://mcp-x402.onrender.com/mcp"
}
}
}name: mcp-x402 — MCP server for agents with autonomous USDC/RLUSD payments
version: 0.0.1
schema: v1
mcpServers:
- name: mcp-x402 — MCP server for agents with autonomous USDC/RLUSD payments
type: streamable-http
url: https://mcp-x402.onrender.com/mcp{
"mcpServers": {
"mcp-x402-mcp-server-for-agents-w": {
"httpUrl": "https://mcp-x402.onrender.com/mcp"
}
}
}{
"mcpServers": {
"mcp-x402-mcp-server-for-agents-w": {
"type": "http",
"url": "https://mcp-x402.onrender.com/mcp"
}
}
}{
"mcpServers": {
"mcp-x402-mcp-server-for-agents-w": {
"url": "https://mcp-x402.onrender.com/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fmcp-x402.onrender.com%2Fmcp&type=streamable_http&id=mcp-x402-mcp-server-for-agents-w&name=mcp-x402%20%E2%80%94%20MCP%20server%20for%20agents%20with%20autonomous%20USDC/RLUSD%20payments
It answered our last check on 21 October 2026 in 687 ms. Over 6 checks since 11 September 2026 it answered 6. Status here comes from Neuronto's own probes, not from the publisher.
3, as returned by the server's own tools/list on 13 September 2026: sml_discover, sml_status, x402_contract.
It answered our last check on 21 October 2026 in 687 ms. Over 6 checks since 11 September 2026 it answered 6.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://mcp-x402.onrender.com/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: io.github.timwal78. Endpoint host: mcp-x402.onrender.com. ARD identifier: urn:air:io.github.timwal78:mcp:mcp-x402.
First indexed 10 September 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.