x402fix

co.youraitoolsPublished by youraitools.coOfficial publisherv0.1.0Updated Oct 26, 2026

x402 endpoint doctor: grades a paid route A-F unpaid, with paste-ready fixes. By Crypto Money Maker

The publisher's own server: DomainCheck

VerifiedStreamable HTTPWeb executableFinance Developer Tools

Server details

Identifier: co.youraitools/x402fix
Transport: Streamable HTTP
Runtime: Web executable
Trust: Verified
Published: Oct 22, 2026

Security note

MCP servers receive tool arguments from a conversation and may perform external actions. Review what a server can do before you enable it, and give it only the access it needs.

The registry verified that this server's namespace belongs to youraitools.co, which also runs its endpoint. That identifies the publisher; it does not make the server's tools safe.

SourceWeft's checks cover whether the listing is complete and the endpoint answered; they do not review the server's code or what its tools do.

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Overview

AI-generated overview

An x402 endpoint doctor that lets an assistant probe a paid x402 URL without paying and grade its payment setup from A to F.

What you can do: Check a paid x402 endpoint: probe a URL unpaid and grade it A-F.
Inspect payment responses: 402 on GET, HEAD and empty POST, CORS, v2 PAYMENT-REQUIRED header and v1 body.
Review accepts details: USDC asset, EIP-712 domain, Solana feePayer, amounts, payTo and multichain consistency.
Check the Bazaar declaration and get paste-ready fixes plus a free preview.
When to use it: Useful when you are building or debugging an x402 paid API and want to confirm the payment handshake, headers and accepts configuration are correct before going live, or when comparing endpoints across chains.
Requirements: Runs as a remote endpoint or as a local npm package over stdio. No authentication, environment variables or headers are declared.

Before you install

The tool probes third-party URLs, so the addresses you submit are sent to that endpoint and to the server. It is described as never paying, but confirm that before pointing it at anything sensitive.

Installation

In SourceWeft

Open x402fix in the dashboard and add it to a workspace.
Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/co.youraitools%2Fx402fix/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "x402fix": {
      "type": "http",
      "url": "https://api.youraitools.co/x402fix/mcp"
    }
  }
}

Tools

check_x402_endpoint

Is my x402 endpoint correct?

x402 endpoint doctor: probes a paid x402 URL unpaid (GET, HEAD, empty POST, CORS; never pays) and grades it A-F: 402 behavior, v2 PAYMENT-REQUIRED header and v1 body, accepts (USDC asset, EIP-712 domain, Solana feePayer, amounts, payTo), multichain consistency and the Bazaar declaration. Use it after deploying or changing a paid route. Free preview by default (grade, score, status, counts). With X402FIX_X402_PRIVATE_KEY set, returns the paid check report (numbered fix list, CDP facilitator validate verdict, payee checks, generated extensions.bazaar block and multichain accepts) from https://api.youraitools.co/x402fix/v1/check, paying $0.02 USDC on Base per check over x402. Automated, unpaid probe of a public x402 endpoint: no payment is made. Fixes are suggestions; a passing grade does not guarantee listing or settlement.

Parametersurlrequiredmethod

Version history

v0.1.0LatestOct 22, 2026

Score

75% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

Reached in the last 30 daysRequired25 pts
Auth declaredRequired10 pts
Tools listedRequired15 pts
DescriptionRequired15 pts
Logo10 pts
Documentation15 pts
Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.
License10 pts
Declare a license in the repository or the registry entry.