2s

2s MCP Server

Remote Model Context Protocol server at https://2s.io/mcp (Streamable HTTP, POST only, protocol version 2025-06-18, serverInfo 2s.io 1.0.0). initialize and tools/list answer anonymously with 575 tools — one per REST operation, named by the spec's x-2s-id, each carrying a real inputSchema; resources/list and prompts/list are not implemented. Paid tool calls are settled through x402 by a hosted signer that takes the caller's EVM private key in an X-EVM-Private-Key header, which the provider's own docs recommend against in favour of the local stdio server, npx -y @2sio/mcp (npm @2sio/mcp 1.82.0), that keeps the key on the caller's machine. Both accept a trial mode. A SEP-1649 server card is published at /.well-known/mcp/server-card.json.

GitHub

Documentation

📖
Documentation
https://2s.io/learn/x402/mcp

Other Resources

🔗
MCPServer
https://raw.githubusercontent.com/api-evangelist/2s-io/refs/heads/main/mcp/2s-io-mcp.yml
🔗
MCPServer
https://2s.io/mcp
🔗
ToolCrosswalk
https://raw.githubusercontent.com/api-evangelist/2s-io/refs/heads/main/mcp/2s-io-tool-crosswalk.yml

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API entry from apis.yml

apis.yml Raw ↑ 
aid: 2s-io:2s-mcp-server
name: 2s MCP Server
description: Remote Model Context Protocol server at https://2s.io/mcp (Streamable HTTP, POST only, protocol
  version 2025-06-18, serverInfo 2s.io 1.0.0). initialize and tools/list answer anonymously with 575 tools
  — one per REST operation, named by the spec's x-2s-id, each carrying a real inputSchema; resources/list
  and prompts/list are not implemented. Paid tool calls are settled through x402 by a hosted signer that
  takes the caller's EVM private key in an X-EVM-Private-Key header, which the provider's own docs recommend
  against in favour of the local stdio server, npx -y @2sio/mcp (npm @2sio/mcp 1.82.0), that keeps the
  key on the caller's machine. Both accept a trial mode. A SEP-1649 server card is published at /.well-known/mcp/server-card.json.
humanURL: https://2s.io/learn/x402/mcp
baseURL: https://2s.io/mcp
tags:
- MCP
- Agent-Native
- x402
tags_raw:
- MCP
- agent-native
- x402
properties:
- type: MCPServer
  url: mcp/2s-io-mcp.yml
- type: MCPServer
  name: 2s hosted MCP endpoint (Streamable HTTP)
  url: https://2s.io/mcp
- type: ToolCrosswalk
  url: mcp/2s-io-tool-crosswalk.yml
- type: Documentation
  url: https://2s.io/learn/x402/mcp