io.github.89rat/x402-checks
Machine-payable deterministic identifier checks + signed XDR-1 receipts for agents.
MCP server · by 89rat
About
io.github.89rat/x402-checks is an MCP server published by 89rat. 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 remotely
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.
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 remote MCP server
Built from what Official MCP Registry declares.
claude mcp add --transport http x402-checks https://api.code402.dev/mcp[mcp_servers.x402-checks]
url = "https://api.code402.dev/mcp"{
"mcpServers": {
"x402-checks": {
"url": "https://api.code402.dev/mcp"
}
}
}Where it is published
| Marketplace | Status | Version | Figures | Verified | First seen |
|---|---|---|---|---|---|
| Official MCP Registry (Open the registry record) | Listed | 1.3.0 | No figure published | 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.
Possibly the same plugin
Listings that share a signal with this one but not enough for us to treat them as the same product.
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groundcheck io.github.beepboop2025/groundcheck
Verify claims, resolve FIGI identity, extract claims, and sign x402 delivery receipts over MCP.
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pulsefeed-x402 io.github.Nikolife2016/pulsefeed-x402
Verify x402 payment endpoints before an AI agent pays: scam scan, on-chain checks, trust scores.
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x402-trust-mcp io.github.JonasFuchss/x402-trust-mcp
Trust & reliability data for x402 endpoints before your agent pays them.
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Second opinion before an irreversible agent action; signed proofs, free verify, public ledger.
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402proof io.github.Timwal78/402proof
x402 payment firewall + Agent Credit Bureau. Invoice/verify/score via RLUSD on XRPL.
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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.
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Signed time and SHA-256 witness receipts for agents, with offline verification and x402 payment.
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x402-receipt-verifier io.github.nexus-mcp-infra/x402-receipt-verifier
Audits NEXUS's own x402 payment logs against its own delivery logs and issues a signed proof-of-deli
-
Deterministic JSON checks with signed evidence and x402-paid execution
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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.
Is this your plugin?
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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.