SERVER

x402 Preflight

Rank #29,184

io.github.chico10117/x402-preflight

Check an x402 endpoint's payment challenge and discovery metadata before paying.

3 versions

by chico10117 (2 servers)View repository ↗

First listed

Sep 1, 2026

Last publish date

Nov 5, 2026

PURPOSE

What you can do with x402 Preflight

x402 Preflight is a Model Context Protocol (MCP) server published by chico10117. It ranks #29,184 of 171,126 active servers on MCP Toplist. x402 Preflight is listed on Official MCP, with 3 tracked versions. It was first listed on Sep 1, 2026 and most recently updated on Nov 5, 2026.

Not verifiedMCP Toplist has not yet written a checked profile for this server, so the paragraph above is assembled from registry data only. The repository README is the authority on what it does.

CAPABILITIES AND LIMITATIONS

What x402 Preflight can and cannot do

Not verifiedMCP Toplist has not catalogued this server's tools or limitations. The repository README lists them.

REQUIREMENTS

What you need before using x402 Preflight

DeclaredNo credentialsNo credentials declared

The registry listing declares no required environment variables or authentication. This is declared metadata, not a verified install — the repository README is the authority.

MCP Toplist probed the public endpoint on Oct 27, 2026 and could not complete the MCP handshake (jsonrpc error). Requirements remain unverified.

Declared by the Official MCP Registry, last synced Nov 7, 2026. Not independently verified by MCP Toplist.

Declared in the registry install config

Hosted endpoint declared as public.

INSTALLATION AND FIRST TASK

Connect x402 Preflight and confirm it works

Remote · HTTP

claude mcp add --transport http x402-preflight https://x402.chikocorp.com/mcp

Remote · HTTP

[mcp_servers.x402-preflight]
url = "https://x402.chikocorp.com/mcp"

Add to ~/.codex/config.toml.

Remote · HTTP

https://x402.chikocorp.com/mcp

Settings → Connectors → “Add custom connector”, then paste this URL.

Remote · HTTP

{
  "mcpServers": {
    "x402-preflight": {
      "url": "https://x402.chikocorp.com/mcp"
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project).

Remote · HTTP

{
  "servers": {
    "x402-preflight": {
      "type": "http",
      "url": "https://x402.chikocorp.com/mcp"
    }
  }
}

Save as .vscode/mcp.json in your workspace.

Remote · HTTP

{
  "mcpServers": {
    "x402-preflight": {
      "serverUrl": "https://x402.chikocorp.com/mcp"
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Remote · HTTP

{
  "mcpServers": {
    "x402-preflight": {
      "url": "https://x402.chikocorp.com/mcp"
    }
  }
}

First successful task

After adding the config, ask your client to list this server's tools. A tool list confirms the connection; an empty list or an error means the server did not start or needs credentials.

ALTERNATIVES

When to choose another server

Other servers by chico10117

x402 Preflight#39,116

View all chico10117 servers →

No task-specific alternatives are catalogued for x402 Preflightyet; the list above is its publisher's other servers.

MAINTENANCE AND EVIDENCE

What changed, and when this was checked

First listed: Sep 1, 2026
Latest version published: Nov 5, 2026
Version history: 3 versions tracked (below)
Requirements evidence: MCP Toplist probed the public endpoint on Oct 27, 2026 and could not complete the MCP handshake (jsonrpc error). Requirements remain unverified.
Profile checked: Not yet — purpose, capabilities and requirements above come from registry data only
Ranking data as of: Nov 5, 2026

Registry sightings

Official MCP ↗listed since Sep 1, 2026 · still listed

Do you maintain x402 Preflight? to correct or enrich this profile.

VERSIONS

Available versions (3)

Version	Published
1.0.2	Nov 5, 2026
1.0.1	Sep 4, 2026
1.0.0	Sep 1, 2026

STANDING

#29,184of 171,126 active serversTop 25%

Ranks ahead of 141,942 of 171,126 servers on MCP Toplist.

BADGE

Show your rank

Maintain this server? Add the live rank badge to your README — it updates automatically as the leaderboard changes.

Markdown

[![MCP Toplist](https://mcptoplist.com/badge/io.github.chico10117%2Fx402-preflight.svg)](https://mcptoplist.com/server/io.github.chico10117%2Fx402-preflight)

HTML

<a href="https://mcptoplist.com/server/io.github.chico10117%2Fx402-preflight"><img src="https://mcptoplist.com/badge/io.github.chico10117%2Fx402-preflight.svg" alt="MCP Toplist: Top 25% of 171,126" /></a>

Variants: append ?metric=score or ?metric=stars to the image URL.

FAQ

Frequently asked questions

Who maintains x402 Preflight?: x402 Preflight is maintained by chico10117, which publishes 2 MCP servers (3 total versions) tracked on MCP Toplist.
Is x402 Preflight listed on the Official MCP Registry?: Yes — x402 Preflight is listed on the Official MCP Registry.
How many versions does x402 Preflight have?: MCP Toplist tracks 3 versions of x402 Preflight, most recently published on Nov 5, 2026.
Where can I find the source code for x402 Preflight?: The source code for x402 Preflight is hosted at github.com/chico10117/x402-preflight-docs.

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