INDIVIDUAL MCP TOOL

get_best_payment_solution

Return whichever solution currently holds rank 1 on 402MCP.

402mcp.orgnone authenticationAvailability not checked

LIVE ENDPOINT

https://402mcp.org/api/v1/mcp

No auth detected

Connect to this endpoint to inspect the live schema for get_best_payment_solution and invoke it with your own arguments.

{}

Inferred read-only · medium confidence · heuristic, not a guarantee.

No write-capable action terms were found; this is not proof that invocation has no side effects.

CONNECT WITH APPROVAL

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.402mcp-org]
url = "https://402mcp.org/api/v1/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "402mcp-org": {
      "type": "http",
      "url": "https://402mcp.org/api/v1/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: 402mcp-org
Remote MCP URL: https://402mcp.org/api/v1/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "402mcp-org": {
      "url": "https://402mcp.org/api/v1/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "402mcp-org": {
      "type": "http",
      "url": "https://402mcp.org/api/v1/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "402mcp-org",
  "transport": "streamable-http",
  "url": "https://402mcp.org/api/v1/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

decode_402_challenge — Call this whenever an HTTP response has status 402, or carries a WWW-Authenticate (L402, LSAT or Payment) or PAYMENT-REQUIRED header.
recommend_payment_rail — Choose an HTTP 402 payment solution from requirements rather than from rank.
search_402_solutions — Search the 402MCP.
get_solution — Return one solution in full: summary, advantages and trade-offs, the six criterion scores with rationale, install commands, verified code samples, sources, maturity and the date its claims were last verified.
get_scheme_reference — Protocol reference for L402, x402 or MPP: challenge, credential and receipt headers, encodings, the request/response flow, an example, and links to the specifications.
probe_402_support — Make one GET (or HEAD) request to a public URL and report whether it answers with an HTTP 402 payment challenge, which scheme, and the decoded terms.