What kind of invoices can this MCP handle?

It handles both Service Invoices (NFS-e) and Merchandise Invoices (NF-e) for Brazilian cities.

Do I need my own NFe.io account?

Yes, you will need to provide your NFe.io API Key and Company ID to connect the MCP to your data.

Can I download the actual invoice files?

Yes, the MCP can retrieve download links for both the official PDF and XML versions of your invoices.

How do I validate city codes for my invoices?

The MCP includes capabilities to retrieve city capabilities and validate IBGE codes for municipal integration.

Can I cancel an invoice using my AI agent?

Yes, there are specific capabilities available to cancel both service and merchandise invoices.

Can my AI automatically issue an NFS-e for a specific customer?

Yes! Use the issue_service_invoice capability with the Company ID and a JSON payload containing the customer data and service values. Your agent will trigger the issuance process with the relevant municipality.

How do I find the correct IBGE code for a Brazilian city?

You can use the list_cities capability to search for municipalities by name or state. The agent will return the official IBGE codes required for fiscal document validation.

Can I retrieve the download link for an invoice PDF?

Yes! Use the get_service_invoice capability with the unique Invoice ID. Your agent will return the metadata, including official links to download the PDF and XML versions of the document.

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Connect NFe.io to ChatGPT, Claude and Gemini

Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Automate your service and merchandise invoicing through your AI agent.

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

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Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

Your AI does the work. We keep it safe and sound.

No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.

Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

V8 Isolate01

Each Connector runs inside its own sealed environment.

Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.

Kill Switch02

One switch stops every agent. Instantly.

One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.

FinOps per User03

Spending limits that pause instead of surprise.

Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.

Three controls, built into the layer your AI connects through.

Curated set · 10 capabilities

We ship only the actions that matter.

Capability set01 / 03

01-04

4 capabilities in this set.

Part of 10 available through NFe.io.

01
Create company
Registers a new company as an issuer within the NFe.io system.
02
Get service invoice
Retrieves the specific details of a Service Invoice (NFS-e).
03
Issue merchandise invoice
Generates a new Merchandise Invoice (NF-e) through the platform.
04
Issue service invoice
Creates a new Service Invoice (NFS-e) for a specific entity.

Capability set02 / 03

05-07

3 capabilities in this set.

Part of 10 available through NFe.io.

05
List companies
Returns a list of all companies registered in your NFe.io account.
06
List webhooks
Shows all webhooks currently configured in your NFe.io account.
07
Cancel merchandise invoice
Cancels a previously issued Merchandise Invoice (NF-e).

Capability set03 / 03

08-10

3 capabilities in this set.

Part of 10 available through NFe.io.

08
Cancel service invoice
Cancels a previously issued Service Invoice (NFS-e).
09
Get company details
Fetches comprehensive information for a specific company issuer.
10
Get merchandise invoice
Retrieves the data for a specific Merchandise Invoice (NF-e).

Real work

What teams actually run

Automated SaaS Billing

An AI agent triggers a new NFS-e every time a subscription renews.

Audit Preparation

A finance user asks the agent to gather all XML files for a specific month.

Error Correction

A developer uses the agent to quickly cancel an incorrectly issued NF-e.

Client Onboarding

The agent registers a new issuing company in the NFe.io system automatically.

Automate a task

Put NFe.io to work on one thing.

Step-by-step automations your AI runs through this Connector: the workflow, the prompts to start with, and the exact capabilities behind each move.

How to manage fiscal settings

One connector, every AI

NFe.io works with the most popular AI clients.

These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.

Building your own app? The connector is yours to use.

You don't need a client to put NFe.io to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.

Observed, not estimated

967ms average. Fast in production.

NFe.io is checked daily against the live service.

Daily averagePeak 1233ms

Oct 3Today

Fastest day: 773ms
Slowest day: 1233ms
14-day trend: Slowing+29%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 10 capabilities arrive ready to run.

Preview access · not provider authentication

The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of NFe.io, so you can see the experience inside your AI.

It does not authenticate your account with NFe.io. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

NFe.io Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_qnxTvOplXh9uce8AMFJ0y3HxvwIx1fg8AXlunLyq/mcp

Claude Desktop

Follow the steps below to connect in seconds.

1In Claude Desktop, open Settings → Connectors.
2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
3Click Add and start a new chat — NFe.io capabilities are ready to use.

Configuration · claude_desktop_config.jsonCopy

{
  "mcpServers": {
    "nfeio-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_qnxTvOplXh9uce8AMFJ0y3HxvwIx1fg8AXlunLyq/mcp"
    }
  }
}

Claude
ChatGPT
Cursor
VS Code
Windsurf
Claude Code
JetBrains
Cline

Step-by-step instructions for each client are in the guide. How to connect

Guided setup for Claude? Set up NFe.io in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work NFe.io owners hand off.

This MCP is built for professionals managing Brazilian tax compliance and automated billing.

01
SaaS Developers
Automate recurring service invoice issuance within existing software workflows.
02
Accountants
Use natural language to pull monthly invoice summaries and XML files.
03
Finance Teams
Manage company metadata and fiscal reporting through an AI agent.

FAQ

Questions NFe.io owners ask.

01
What kind of invoices can this MCP handle?
It handles both Service Invoices (NFS-e) and Merchandise Invoices (NF-e) for Brazilian cities.
02
Do I need my own NFe.io account?
Yes, you will need to provide your NFe.io API Key and Company ID to connect the MCP to your data.
03
Can I download the actual invoice files?
Yes, the MCP can retrieve download links for both the official PDF and XML versions of your invoices.
04
How do I validate city codes for my invoices?
The MCP includes capabilities to retrieve city capabilities and validate IBGE codes for municipal integration.
05
Can I cancel an invoice using my AI agent?
Yes, there are specific capabilities available to cancel both service and merchandise invoices.
06
Can my AI automatically issue an NFS-e for a specific customer?
Yes! Use the issue_service_invoice capability with the Company ID and a JSON payload containing the customer data and service values. Your agent will trigger the issuance process with the relevant municipality.
07
How do I find the correct IBGE code for a Brazilian city?
You can use the list_cities capability to search for municipalities by name or state. The agent will return the official IBGE codes required for fiscal document validation.
08
Can I retrieve the download link for an invoice PDF?
Yes! Use the get_service_invoice capability with the unique Invoice ID. Your agent will return the metadata, including official links to download the PDF and XML versions of the document.

Explore

More in Productivity

Connect NFe.io to Claude, Cursor, ChatGPT & more

Your AI does the work. We keep it safe and sound.

Each Connector runs inside its own sealed environment.

One switch stops every agent. Instantly.

Spending limits that pause instead of surprise.

We ship only the actions that matter.

01-04

Create company

Get service invoice

Issue merchandise invoice

Issue service invoice

05-07

List companies

List webhooks

Cancel merchandise invoice

08-10

Cancel service invoice

Get company details

Get merchandise invoice

What teams actually run

Automated SaaS Billing

Audit Preparation

Error Correction

Client Onboarding

Building your own app? The connector is yours to use.

NFe.io Connector

Claude Desktop

SaaS Developers

Accountants

Finance Teams

What kind of invoices can this MCP handle?

Do I need my own NFe.io account?

Can I download the actual invoice files?

How do I validate city codes for my invoices?

Can I cancel an invoice using my AI agent?

Can my AI automatically issue an NFS-e for a specific customer?

How do I find the correct IBGE code for a Brazilian city?

Can I retrieve the download link for an invoice PDF?

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