preflight402
Trust verdict for an x402 payment endpoint: health, 402 handshake, price, proceed/caution/avoid.
MCP server · by ironshell.io
About
preflight402 is an MCP server published by ironshell.io. 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 preflight402 https://preflight402.ironshell.io/mcp[mcp_servers.preflight402]
url = "https://preflight402.ironshell.io/mcp"{
"mcpServers": {
"preflight402": {
"url": "https://preflight402.ironshell.io/mcp"
}
}
}Where it is published
| Marketplace | Status | Version | Figures | Verified | First seen |
|---|---|---|---|---|---|
| Official MCP Registry (Open the registry record) | Listed | 0.1.0 | 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.
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Inspect and validate an x402 endpoint before an autonomous agent spends USDC.
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x402-payment-safety io.github.AgentTanuki/x402-payment-safety
Authorize x402 payments before signing with request-bound, signed safety decisions.
-
Check an x402 endpoint before your agent pays it: challenge validity and on-chain payer evidence.
-
Pre-payment merchant trust checks for x402 agents on Base and Solana.
-
Ask probe402's public record about an x402 or MPP endpoint before an agent pays it.
-
Risk-check counterparties before an AI agent pays; pay x402 resources only after a verified allow
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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.
-
mcp-x402-pay io.github.CryptoAPIs-io/mcp-x402-pay
MCP server that pays x402-gated HTTP endpoints — fetch, and on a 402 authorize, sign, retry
-
mizan app.higgsfield.mizan-bazar/mizan
Check an x402 endpoint before your agent pays it: avoid / caution / ok, proven on-chain.
-
Pay any x402 endpoint on the open web: auto-paying bridge with Bazaar discovery and spend caps.
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Check an x402 endpoint before your agent pays it: challenge validity and on-chain payer evidence.
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Pre-payment merchant trust checks for x402 agents on Base and Solana.
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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.