callx402 MCP server
Read-only x402 payment diagnostics: diagnose, evidence, explain, recover, resolve, status. Zero deps
MCP server · by payload-tools
About
callx402 MCP server is an MCP server published by payload-tools. Marketplaces we read that list it: 1 (Official MCP Registry). We first saw it on 2026-10-11 and have recorded no change since. As of our marketplace pass on 2026-10-13.
What it asks for
- Runs on your machine
None of the marketplaces we read publishes its tools or the settings it asks for.
What it declares, asks for and runs, in full
Only install plugins from developers you trust. We list what marketplaces publish and do not test plugins.
Package
npm callx402 (callx402 on npm)
- npm downloads/week: 860 (2026-10-12)
- npm downloads/month: 860 (2026-10-12)
- Latest version on npm: 1.0.3, published 2026-10-08
- Declared version 1.0.1 is not listed on npm
npm facts come from the public npm registry (registry.npmjs.org, api.npmjs.org). Each figure is the registry's own and is never added to another. A registry that publishes no figure shows none: no number is not zero.
Works with
- Claude Code
- Codex
- Cursor
- VS Code
- Copilot CLI
A one-click link opens the client, which asks you to confirm before it adds the server.
From the marketplaces that list it and the MCP transport it declares, as each client documents them. We do not test plugins.
Connect
Commands and configs built only from what its marketplaces declare. We do not run them for you and do not test plugins.
As a local MCP server: npm package
Built from what Official MCP Registry declares.
claude mcp add --transport stdio callx402 -- npx -y callx402[mcp_servers.callx402]
command = "npx"
args = ["-y", "callx402"]{
"mcpServers": {
"callx402": {
"command": "npx",
"args": [
"-y",
"callx402"
]
}
}
}Where it is published
| Marketplace | Status | Version | Figures | Verified | First seen |
|---|---|---|---|---|---|
| Official MCP Registry (Open the registry record) | Listed | 1.0.1 | Downloads/month (npm): 860 Downloads/week (npm): 860 Forks (GitHub): 0 Stars (GitHub): 0 |
Not marked |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
What changed
Nothing has moved on this plugin since we started watching it.
Similar plugins
Products whose own names, descriptions, tools and skills are closest in meaning to this one, on every marketplace we read. Closeness is ranked within this list only.
-
mcp-x402-accept io.github.CryptoAPIs-io/mcp-x402-accept
Self-hosted MCP proxy that puts an x402 paywall in front of an existing MCP server
-
Ask probe402's public record about an x402 or MPP endpoint before an agent pays it.
-
Is this x402/MPP API safe to pay? $0.001 preflight, fixes, a $0.25 test purchase. Free quick check.
-
mercury-x402-mcp io.github.mercuryx402/mercury-x402-mcp
Agent-payable web data over x402: 18 keyless services an agent pays per call.
-
x402-mcp io.github.kwizzlesurp10-ctrl/x402-mcp
Pay for HTTP APIs and charge for your own: x402 micropayments in USDC on Base.
-
Multi-tenant HTTP 402 infrastructure gateway and stdio MCP server for machine payments.
-
MCP tools for x402 readiness, paid-path probes, launch packs, and trust receipts.
-
Pay any x402 endpoint on the open web: auto-paying bridge with Bazaar discovery and spend caps.
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x402-data-gateway io.github.epistemedeus/x402-data-gateway
Paid x402 and MPP tools for agent discovery, payment safety, data, and DeFi.
-
mcp-x402 io.github.codespar/mcp-x402
DEPRECATED: no live endpoint (api.x402.org does not resolve)
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Found by meaning, not by shared code or a shared repository: similar plugins stay separate products, and this is not a review or a recommendation.
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Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.