Koskamo

Fizzl Buy MCP

An MCP server that allows AI agents to purchase paid x402 APIs. It selects reliable services verified by x402 Doctor, fills in inputs, pays for the service, and returns the answer checked by TypeSafe Jev with a signed receipt.

Endpoint and access

No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.

Fizzl Buy MCP logo, by FizzlCommunity listingStreamable HTTPNo sign-inEndpoint checked 2026-11-01Published by Fizzl
MCP endpoint (Streamable HTTP)
https://buy.fizzl.eu/mcp
Vendor documentation

What you can do with it

  • Buy a weather forecast for a specific location
  • Retrieve BTC price data via paid API
  • Search the web for x402 endpoints

Source and maintenance

Community listingRegistry 1.1.0
Maintenance checked

Protocol and capabilities

Server
fizzl-buy 1.1.0
MCP protocol
2025-06-18
Tools
2 advertised
Resources
Not advertised
Resource templates
Not advertised
Prompts
Not advertised
Server-advertised capabilities
{
  "tools": {
    "listChanged": true
  }
}

Tools

2 advertised

x402_buy — Buy what your agent needs ($0.02)
Advertised by the server during the last successful anonymous check.
Open-world

Paid ($0.02 via x402 in USDC on Base, Solana, Algorand or Stellar, or RLUSD on the XRP Ledger, or USD₮0 on X Layer, inside the call): say what your agent needs ("weather forecast for Amsterdam tomorrow", "BTC price", "EUR to USD rate") and Fizzl buys the right paid x402 API, the one x402 Doctor has seen paying out day after day at a fair price (up to $0.01), fills in its input, pays it from its own wallet and returns the answer, checked by TypeSafe Jev, with which service it came from and a signed receipt. Nothing is charged when no seller delivers. To see first what it would buy, call x402_pick (free).

x402_buy input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "need"
  ],
  "properties": {
    "need": {
      "type": "string",
      "description": "What your agent needs, in a sentence, with the details (place, symbol, query)"
    }
  }
}
x402_buy annotations
{
  "readOnlyHint": false,
  "openWorldHint": true,
  "destructiveHint": false
}
x402_pick — Which paid API to buy (free)
Advertised by the server during the last successful anonymous check.
Advertised read-onlyOpen-world

Free: say what your agent needs and get the paid x402 API that x402 Doctor has seen paying out day after day at a fair price (up to $0.01), with its track record, price and example input (example_in: "query" for URL parameters, "body" for a JSON body), plus alternatives. To buy it in one call, POST https://buy.fizzl.eu/v1/buy {"need": …} ($0.02 over x402): the answer comes back checked, and nothing is charged when no service delivers. Limited to 10 free calls an hour.

x402_pick input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "need"
  ],
  "properties": {
    "need": {
      "type": "string",
      "maxLength": 500,
      "minLength": 3,
      "description": "What your agent needs, in a sentence, with the details (place, symbol, query)"
    }
  }
}
x402_pick annotations
{
  "readOnlyHint": true,
  "openWorldHint": true
}

Prompts

Not advertised

No prompt definitions available.

Resources

Not advertised

No resource definitions available.

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks
1 of 1 (100%)
Average latency
438 ms
95th percentile latency
438 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · probe · passed · 438 ms · metadata changed · 2 tool(s)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.
Claude Code configuration
claude mcp add --transport http fizzl-buy-mcp https://buy.fizzl.eu/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).
Codex configuration
codex mcp add fizzl-buy-mcp --url https://buy.fizzl.eu/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable fizzl-buy-mcp in your MCP settings.
Cursor configuration
{
  "mcpServers": {
    "fizzl-buy-mcp": {
      "url": "https://buy.fizzl.eu/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).
Cline configuration
{
  "mcpServers": {
    "fizzl-buy-mcp": {
      "type": "streamableHttp",
      "url": "https://buy.fizzl.eu/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start fizzl-buy-mcp and inspect its tools.
VS Code configuration
{
  "servers": {
    "fizzl-buy-mcp": {
      "type": "http",
      "url": "https://buy.fizzl.eu/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.
Gemini CLI configuration
gemini mcp add --transport http fizzl-buy-mcp https://buy.fizzl.eu/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.
Claude Desktop configuration
{
  "mcpServers": {
    "fizzl-buy-mcp": {
      "url": "https://buy.fizzl.eu/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.
Windsurf configuration
{
  "mcpServers": {
    "fizzl-buy-mcp": {
      "serverUrl": "https://buy.fizzl.eu/mcp"
    }
  }
}

Let your agent find its tools

Find servers like Fizzl Buy MCP from your agent. Add Koskamo once to search the index for endpoints, access requirements, and client setup. Public discovery needs no key.