InvoiceXpress (Online Invoicing) MCP Server for OpenAI Agents SDK 16 tools — connect in under 2 minutes
The OpenAI Agents SDK enables production-grade agent workflows in Python. Connect InvoiceXpress (Online Invoicing) through Vinkius and your agents gain typed, auto-discovered tools with built-in guardrails. no manual schema definitions required.
ASK AI ABOUT THIS MCP SERVER
Vinkius supports streamable HTTP and SSE.
import asyncio
from agents import Agent, Runner
from agents.mcp import MCPServerStreamableHttp
async def main():
# Your Vinkius token. get it at cloud.vinkius.com
async with MCPServerStreamableHttp(
url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
) as mcp_server:
agent = Agent(
name="InvoiceXpress (Online Invoicing) Assistant",
instructions=(
"You help users interact with InvoiceXpress (Online Invoicing). "
"You have access to 16 tools."
),
mcp_servers=[mcp_server],
)
result = await Runner.run(
agent, "List all available tools from InvoiceXpress (Online Invoicing)"
)
print(result.final_output)
asyncio.run(main())
* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure
About InvoiceXpress (Online Invoicing) MCP Server
Connect your InvoiceXpress account to any AI agent and take full control of your certified invoicing and client management in Portugal through natural conversation.
The OpenAI Agents SDK auto-discovers all 16 tools from InvoiceXpress (Online Invoicing) through native MCP integration. Build agents with built-in guardrails, tracing, and handoff patterns. chain multiple agents where one queries InvoiceXpress (Online Invoicing), another analyzes results, and a third generates reports, all orchestrated through Vinkius.
What you can do
- Client Management — List all registered clients and retrieve detailed fiscal data including NIF/NIPC identifiers, addresses, and contact histories directly from your agent
- Invoice Lifecycle — Browse issued invoices and receipts, and access detailed line items and tax breakdowns for each document securely
- Estimate & Quotes — List and retrieve estimates and pro-forma invoices to monitor your sales pipeline and pending business proposals
- Item Inventory — Manage your catalog of faturable articles and services, including unit prices and associated VAT rates (IVA)
- Fiscal Compliance — Audit tax rates and exemptions active in your account to ensure mapping with official AT (Autoridade Tributária) tables
- Digital Delivery — Access permalinks to signed PDF documents for easy sharing and visual verification of fiscal items
The InvoiceXpress (Online Invoicing) MCP Server exposes 16 tools through the Vinkius. Connect it to OpenAI Agents SDK in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.
How to Connect InvoiceXpress (Online Invoicing) to OpenAI Agents SDK via MCP
Follow these steps to integrate the InvoiceXpress (Online Invoicing) MCP Server with OpenAI Agents SDK.
Install the SDK
Run pip install openai-agents in your Python environment
Replace the token
Replace [YOUR_TOKEN_HERE] with your Vinkius token from cloud.vinkius.com
Run the script
Save the code above and run it: python agent.py
Explore tools
The agent will automatically discover 16 tools from InvoiceXpress (Online Invoicing)
Why Use OpenAI Agents SDK with the InvoiceXpress (Online Invoicing) MCP Server
OpenAI Agents SDK provides unique advantages when paired with InvoiceXpress (Online Invoicing) through the Model Context Protocol.
Native MCP integration via `MCPServerSse`, pass the URL and the SDK auto-discovers all tools with full type safety
Built-in guardrails, tracing, and handoff patterns let you build production-grade agents without reinventing safety infrastructure
Lightweight and composable: chain multiple agents and MCP servers in a single pipeline with minimal boilerplate
First-party OpenAI support ensures optimal compatibility with GPT models for tool calling and structured output
InvoiceXpress (Online Invoicing) + OpenAI Agents SDK Use Cases
Practical scenarios where OpenAI Agents SDK combined with the InvoiceXpress (Online Invoicing) MCP Server delivers measurable value.
Automated workflows: build agents that query InvoiceXpress (Online Invoicing), process the data, and trigger follow-up actions autonomously
Multi-agent orchestration: create specialist agents. one queries InvoiceXpress (Online Invoicing), another analyzes results, a third generates reports
Data enrichment pipelines: stream data through InvoiceXpress (Online Invoicing) tools and transform it with OpenAI models in a single async loop
Customer support bots: agents query InvoiceXpress (Online Invoicing) to resolve tickets, look up records, and update statuses without human intervention
InvoiceXpress (Online Invoicing) MCP Tools for OpenAI Agents SDK (16)
These 16 tools become available when you connect InvoiceXpress (Online Invoicing) to OpenAI Agents SDK via MCP:
create_client
Se não for fornecido um NIF, usa o valor Consumer (ou similar requerido pelo portal). Registar um novo cliente no InvoiceXpress com dados fiscais completos
create_item
Precisas sempre de um ID de taxa legal (consulta a ferramenta list_taxes previamente). Criar um novo artigo ou serviço para ser faturado
find_client
Pesquisar um cliente pelo nome empresarial
get_client
Obter detalhes completos de um cliente pelo seu ID
get_invoice
Obter todos os detalhes e o link PDF de uma fatura
get_item
Obter detalhes de um artigo ou serviço pelo seu ID
list_clients
Listar todos os clientes registados no InvoiceXpress
list_credit_notes
Listar todas as notas de crédito (devolução / acerto)
list_estimates
Listar todos os orçamentos emitidos de forma paginada
list_guides
Listar guias de transporte
list_invoices
Listar todas as faturas emitidas
list_items
Listar todos os artigos e serviços configurados no InvoiceXpress
list_receipts
Listar todos os recibos de pagamento de clientes
list_sequences
Listar as séries de faturas ativas, ex: FT 2026/
list_taxes
Listar as taxas de IVA e isenções ativas na conta
update_client
Só os parâmetros enviados serão substituídos, os restantes mantêm-se inalterados. Atualizar os dados demográficos de um cliente existente
Example Prompts for InvoiceXpress (Online Invoicing) in OpenAI Agents SDK
Ready-to-use prompts you can give your OpenAI Agents SDK agent to start working with InvoiceXpress (Online Invoicing) immediately.
"List the last 5 invoices from InvoiceXpress"
"Search for a client named 'TechPorto'"
"What are the active VAT rates in my account?"
Troubleshooting InvoiceXpress (Online Invoicing) MCP Server with OpenAI Agents SDK
Common issues when connecting InvoiceXpress (Online Invoicing) to OpenAI Agents SDK through the Vinkius, and how to resolve them.
MCPServerStreamableHttp not found
pip install --upgrade openai-agentsAgent not calling tools
InvoiceXpress (Online Invoicing) + OpenAI Agents SDK FAQ
Common questions about integrating InvoiceXpress (Online Invoicing) MCP Server with OpenAI Agents SDK.
How does the OpenAI Agents SDK connect to MCP?
MCPServerSse(url=...) to create a server connection. The SDK auto-discovers all tools and makes them available to your agent with full type information.Can I use multiple MCP servers in one agent?
MCPServerSse instances to the agent constructor. The agent can use tools from all connected servers within a single run.Does the SDK support streaming responses?
Connect InvoiceXpress (Online Invoicing) with your favorite client
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Python SDK for building production-grade OpenAI agent workflows.
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Python framework for orchestrating collaborative AI agent crews.
Leading Python framework for composable LLM applications.
Data-aware AI agent framework for structured and unstructured sources.
Microsoft's framework for multi-agent collaborative conversations.
Connect InvoiceXpress (Online Invoicing) to OpenAI Agents SDK
Get your token, paste the configuration, and start using 16 tools in under 2 minutes. No API key management needed.