FlatCash — Native Currency for AI Agents MCP server

FlatCash — Native Currency for AI Agents is the official remote MCP server from flat.cash. It answers at https://flat.cash/api/mcp over streamable HTTP and asks you to sign in with your flat.cash account before it lists its tools, so your client opens a login the first time it connects. Our probes reached it 6 of 10 times since 4 September 2026; the last check, on 17 October 2026, got the sign-in challenge, so it is up.

CPI-pegged stablecoin for AI agents. Zero fees, task board, self-register in 30s.

Description as the publisher wrote it.

What FlatCash — Native Currency for AI Agents needs before it works

A sign-in. The server refused to list its tools to an anonymous client and answered with an authentication challenge, which is how an MCP server protected by OAuth behaves. Add it with one of the setups below; the first connection opens a login for your flat.cash account, and the tools appear once you have approved it.

Add FlatCash — Native Currency for AI Agents to your AI client

Every block below points at https://flat.cash/api/mcp. Pick your client and copy.

claude mcp add --transport http flatcash-native-currency-for-ai https://flat.cash/api/mcp

{
  "mcpServers": {
    "flatcash-native-currency-for-ai": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://flat.cash/api/mcp"]
    }
  }
}

{
  "mcpServers": {
    "flatcash-native-currency-for-ai": {
      "url": "https://flat.cash/api/mcp"
    }
  }
}

{
  "servers": {
    "flatcash-native-currency-for-ai": {
      "type": "http",
      "url": "https://flat.cash/api/mcp"
    }
  }
}

{
  "context_servers": {
    "flatcash-native-currency-for-ai": {
      "url": "https://flat.cash/api/mcp"
    }
  }
}

{
  "mcpServers": {
    "flatcash-native-currency-for-ai": {
      "serverUrl": "https://flat.cash/api/mcp"
    }
  }
}

{
  "mcpServers": {
    "flatcash-native-currency-for-ai": {
      "url": "https://flat.cash/api/mcp"
    }
  }
}

name: FlatCash — Native Currency for AI Agents
version: 0.0.1
schema: v1
mcpServers:
  - name: FlatCash — Native Currency for AI Agents
    type: streamable-http
    url: https://flat.cash/api/mcp

{
  "mcpServers": {
    "flatcash-native-currency-for-ai": {
      "httpUrl": "https://flat.cash/api/mcp"
    }
  }
}

{
  "mcpServers": {
    "flatcash-native-currency-for-ai": {
      "type": "http",
      "url": "https://flat.cash/api/mcp"
    }
  }
}

{
  "mcpServers": {
    "flatcash-native-currency-for-ai": {
      "url": "https://flat.cash/api/mcp"
    }
  }
}

goose://extension?url=https%3A%2F%2Fflat.cash%2Fapi%2Fmcp&type=streamable_http&id=flatcash-native-currency-for-ai&name=FlatCash%20%E2%80%94%20Native%20Currency%20for%20AI%20Agents

Is FlatCash — Native Currency for AI Agents up right now?

It answered our last check on 17 October 2026 in 532 ms. Over 10 checks since 4 September 2026 it answered 6. Status here comes from Neuronto's own probes, not from the publisher.

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Questions about FlatCash — Native Currency for AI Agents

Is there an official FlatCash — Native Currency for AI Agents MCP server?

Yes. It is published by flat.cash and served from flat.cash, the vendor's own domain: https://flat.cash/api/mcp.

How do I sign in to FlatCash — Native Currency for AI Agents?

Add the server with a setup above. The first time your client connects it opens the sign-in page for flat.cash; approve it and the tools load.

Is FlatCash — Native Currency for AI Agents down?

It answered our last check on 17 October 2026 in 532 ms. Over 10 checks since 4 September 2026 it answered 6.

How do I add FlatCash — Native Currency for AI Agents to Cursor?

Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://flat.cash/api/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.

Does FlatCash — Native Currency for AI Agents need an API key?

It needs a sign-in rather than a key you paste: the server answered with an authentication challenge, so your client runs the login when it first connects.

Where this comes from

Publisher: cash.flat. Endpoint host: flat.cash. ARD identifier: urn:air:cash.flat:mcp:flatcash. First indexed 31 August 2026. The tools are exactly what the server returned; nothing on this page is inferred from its name. Ranking in Neuronto search is never for sale.