NFe.io

What your agent can do

NFe.io gives your agent 22 tools it calls directly — pick the ones it needs, in Claude, Cursor, or any MCP client.

• →create_nfse — Issue an NFS-e (service invoice). Returns the invoice with flowStatus, rpsNumber, and PDF URL once processed.
• →get_nfse — Fetch a single NFS-e by id.
• →cancel_nfse — Cancel an NFS-e. Some municipalities only allow cancellation within a short window (commonly 30 days).

// Your agent calls a tool directly — no glue code.
// CodeSpar's managed tier handles OAuth2, token rotation and rate limits.
const result = await session.call("create_nfse", { /* ... */ });

Install

$ npm install @codespar/mcp-nfe-io

Quickstart

Add this entry to your claude_desktop_config.json (or any MCP-compatible client config).

{
  "mcpServers": {
    "nfe-io": {
      "command": "npx",
      "args": [
        "-y",
        "@codespar/mcp-nfe-io"
      ],
      "env": {
        "NFEIO_API_KEY": "<your_nfeio_api_key>"
      }
    }
  }
}

After restart, your agent can call any of the 22 tools below — try create_nfse first.

Environment variables · 2

Required to authenticate the server. Stored encrypted when using CodeSpar managed hosting.

Available tools · 22

Each tool is independent — your agent loads only what it needs to reduce context and response time.

Compatible frameworks

MCP is a protocol — any framework that speaks it can mount this server.

Frequently asked questions