How to Use the Focus NFe MCP in CrewAI

Q: Can a CrewAI agent autonomously cancel a Focus NFe invoice?

Yes, an agent with access to the canceldocument tool can submit cancellation requests. You can set up a supervisor agent to approve these actions before they are sent to SEFAZ.

Q: How do CrewAI agents handle municipal tax errors with Focus NFe?

When emitnfse returns an error, the agent reads the validation message. Using its reasoning loop, the agent corrects the payload tax codes and attempts the emission again.

Run autonomous multi-agent teams that manage, audit, and emit Brazilian tax documents using CrewAI.

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Connect Focus NFe MCP to CrewAI

Create your Vinkius account to connect Focus NFe to CrewAI and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup Focus NFe with CrewAI

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Collaborative Tax Document Auditing

The `emit_nfe` tool allows your billing agent to generate product invoices after an audit agent verifies the line items. CrewAI coordinates these specialized agents to ensure tax calculations match state rules before submission. This division of labor prevents costly SEFAZ rejections. If an emission fails, a supervisor agent analyzes the error code and instructs the billing agent on how to correct the payload.

Autonomous Operations with the Focus NFe MCP Server

The `emit_nfse` tool lets an autonomous service agent handle municipal billing based on completed tasks in your project management system. The agent prepares the data, submits the invoice, and monitors the municipal response. If the prefeitura delays authorization, the agent triggers `consult_document` at scheduled intervals. This keeps your logistics pipeline moving without requiring human developers to write custom polling loops.

Automated Tax XML Retrieval and Archiving

The `download_xml` tool enables your archiving agent to fetch authorized XML files immediately after emission. The agent verifies the digital signature and organizes the files in your company's long-term storage. For canceled orders, a coordinator agent calls `cancel_document` and verifies the cancellation status. The agent then retrieves the updated XML to ensure your accounting records remain audit-compliant.

Setup guide

Set up Focus NFe MCP in CrewAI

Prerequisites

Python 3.10+ installed
crewai package (pip install crewai)
Active Vinkius subscription with a valid endpoint token

1

Install CrewAI
Run pip install crewai to install the framework. MCP support is built-in via the mcps parameter.
2

Add the MCP URL to your agent
Pass your Vinkius endpoint directly to the mcps list. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. CrewAI handles tool discovery and caching automatically.
3

Kick off your crew
Create a Crew with your agent and tasks. Call crew.kickoff() — the agent will automatically invoke Focus NFe tools as needed.

crew.py

from crewai import Agent, Task, Crew

agent = Agent(
    role="Focus NFe Analyst",
    goal="Access and analyze Focus NFe data via MCP.",
    backstory="Expert analyst with direct Focus NFe access.",
    mcps=[
        "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    ],
)

task = Task(
    description="List recent Focus NFe transactions",
    agent=agent,
    expected_output="A summary of recent activity",
)

crew = Crew(agents=[agent], tasks=[task])
result = crew.kickoff()
print(result)

Get your connection token →

Prerequisites

Python 3.10+ installed
crewai + crewai-tools packages
Active Vinkius subscription with a valid endpoint token

1

Install dependencies
Run pip install crewai crewai-tools. The MCPServerAdapter handles lifecycle management and tool conversion.
2

Connect with MCPServerAdapter
Use MCPServerAdapter as a context manager with SseServerParameters pointing to your Vinkius endpoint. The adapter automatically manages connection lifecycle.
3

Assign tools and run
Pass the returned mcp_tools to your agent's tools parameter. The adapter converts MCP tools to native BaseTool objects compatible with all CrewAI agents.

crew.py

from crewai import Agent, Task, Crew
from crewai_tools import MCPServerAdapter
from mcp import SseServerParameters

server_params = SseServerParameters(
    url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
)

with MCPServerAdapter(server_params) as mcp_tools:
    agent = Agent(
        role="Focus NFe Analyst",
        goal="Access and analyze Focus NFe data via MCP.",
        backstory="Expert analyst with direct Focus NFe access.",
        tools=mcp_tools,
    )

    task = Task(
        description="List recent Focus NFe transactions",
        agent=agent,
        expected_output="A summary of recent activity",
    )

    crew = Crew(agents=[agent], tasks=[task])
    result = crew.kickoff()
    print(result)

Get your connection token →

Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Focus NFe. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

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Common questions about Focus NFe MCP in CrewAI

Pass the Vinkius HTTP URL directly into your CrewAI Agent's mcps array. This registers all five tax tools, allowing the agent to call them autonomously during execution.

Yes, an agent with access to the cancel_document tool can submit cancellation requests. You can set up a supervisor agent to approve these actions before they are sent to SEFAZ.

When emit_nfse returns an error, the agent reads the validation message. Using its reasoning loop, the agent corrects the payload tax codes and attempts the emission again.

Yes, you can use MCPServerHTTP to filter tools. This ensures only your archiving agent has access to download_xml, while other agents only see emission tools.

All invoice details, company tax IDs, and financial totals are processed in isolated, ephemeral environments. No sensitive tax data is cached or stored permanently on the Vinkius platform, maintaining strict compliance.

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