SERVER

Mercury x402 MCP

Rank #136,042

smithery/mercuryuser/mercury-x402

Mercury is a pay-per-call MCP server that lets AI agents discover and call financial data tools using the x402 HTTP payment protocol. 18 tools covering crypto prices, DeFi liquidity, NFT data, on-chain analytics, and more. tools/list is free — tools/call is billed per call using your Mercury API key.

Versions unknown

First listed

Jun 7, 2026

Last publish date

—

PURPOSE

What you can do with Mercury x402 MCP

Mercury x402 MCP is a Model Context Protocol (MCP) server. It ranks #136,042 of 166,322 active servers on MCP Toplist. Mercury x402 MCP is listed on Smithery; no version information is available from the registries that list it or from its repository. It was first listed on Jun 7, 2026.

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

CAPABILITIES AND LIMITATIONS

What Mercury x402 MCP can and cannot do

Not verifiedMCP Toplist has not catalogued this server's tools or limitations. Check its registry listings below.

REQUIREMENTS

What you need before using Mercury x402 MCP

DeclaredRemote authHosted remote, sign-in declared

The hosted endpoint is declared as gated by authentication — connect via its URL and authenticate with the provider (OAuth flow or an API key/header, per its docs).

Declared by Smithery, last synced Nov 2, 2026. Not independently verified by MCP Toplist.

Declared in the registry install config

Hosted endpoint declared as requiring authentication.

INSTALLATION AND FIRST TASK

Connect Mercury x402 MCP and confirm it works

Remote · HTTP

claude mcp add --transport http mercury-x402 https://server.smithery.ai/mercuryuser/mercury-x402/mcp

This endpoint requires authentication — see the server’s docs for credentials.

Remote · HTTP

[mcp_servers.mercury-x402]
url = "https://server.smithery.ai/mercuryuser/mercury-x402/mcp"

Add to ~/.codex/config.toml. This endpoint requires authentication — see the server’s docs for credentials.

Remote · HTTP

https://server.smithery.ai/mercuryuser/mercury-x402/mcp

Settings → Connectors → “Add custom connector”, then paste this URL. This endpoint requires authentication — see the server’s docs for credentials.

Remote · HTTP

{
  "mcpServers": {
    "mercury-x402": {
      "url": "https://server.smithery.ai/mercuryuser/mercury-x402/mcp"
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project). This endpoint requires authentication — see the server’s docs for credentials.

Remote · HTTP

{
  "servers": {
    "mercury-x402": {
      "type": "http",
      "url": "https://server.smithery.ai/mercuryuser/mercury-x402/mcp"
    }
  }
}

Save as .vscode/mcp.json in your workspace. This endpoint requires authentication — see the server’s docs for credentials.

Remote · HTTP

{
  "mcpServers": {
    "mercury-x402": {
      "serverUrl": "https://server.smithery.ai/mercuryuser/mercury-x402/mcp"
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json. This endpoint requires authentication — see the server’s docs for credentials.

Remote · HTTP

{
  "mcpServers": {
    "mercury-x402": {
      "url": "https://server.smithery.ai/mercuryuser/mercury-x402/mcp"
    }
  }
}

This endpoint requires authentication — see the server’s docs for credentials.

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.

MAINTENANCE AND EVIDENCE

What changed, and when this was checked

First listed: Jun 7, 2026
Version history: Unavailable — no registry exposes versions and no release tags were found
Requirements evidence: Declared by Smithery, last synced Nov 2, 2026. Not independently verified by MCP Toplist.
Profile checked: Not yet — purpose, capabilities and requirements above come from registry data only
Ranking data as of: Nov 2, 2026

Registry sightings

Smithery ↗listed since Oct 29, 2026 · still listed

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

VERSIONS

Version information unavailable

The registry that lists this server does not expose version metadata, and no release tags were found on the linked repository. MCP Toplist cannot say how, or whether, this server is versioned.

STANDING

#136,042of 166,322 active servers

Ranks ahead of 30,280 of 166,322 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/smithery%2Fmercuryuser%2Fmercury-x402.svg)](https://mcptoplist.com/server/smithery%2Fmercuryuser%2Fmercury-x402)

HTML

<a href="https://mcptoplist.com/server/smithery%2Fmercuryuser%2Fmercury-x402"><img src="https://mcptoplist.com/badge/smithery%2Fmercuryuser%2Fmercury-x402.svg" alt="MCP Toplist: #136,042 of 166,322" /></a>

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

FAQ

Frequently asked questions

Is Mercury x402 MCP listed on the Official MCP Registry?: Mercury x402 MCP is not on the Official MCP Registry. It is listed on Smithery.
How many versions does Mercury x402 MCP have?: Version information is unavailable for Mercury x402 MCP: no registry that lists it exposes version metadata, and no release tags were found on its repository.

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