InvoiceXpress (Online Invoicing) MCP Server for LlamaIndex 16 tools — connect in under 2 minutes
LlamaIndex specializes in data-aware AI agents that connect LLMs to structured and unstructured sources. Add InvoiceXpress (Online Invoicing) as an MCP tool provider through Vinkius and your agents can query, analyze, and act on live data alongside your existing indexes.
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Vinkius supports streamable HTTP and SSE.
import asyncio
from llama_index.tools.mcp import BasicMCPClient, McpToolSpec
from llama_index.core.agent.workflow import FunctionAgent
from llama_index.llms.openai import OpenAI
async def main():
# Your Vinkius token. get it at cloud.vinkius.com
mcp_client = BasicMCPClient("https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp")
mcp_tool_spec = McpToolSpec(client=mcp_client)
tools = await mcp_tool_spec.to_tool_list_async()
agent = FunctionAgent(
tools=tools,
llm=OpenAI(model="gpt-4o"),
system_prompt=(
"You are an assistant with access to InvoiceXpress (Online Invoicing). "
"You have 16 tools available."
),
)
response = await agent.run(
"What tools are available in InvoiceXpress (Online Invoicing)?"
)
print(response)
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.
LlamaIndex agents combine InvoiceXpress (Online Invoicing) tool responses with indexed documents for comprehensive, grounded answers. Connect 16 tools through Vinkius and query live data alongside vector stores and SQL databases in a single turn. ideal for hybrid search, data enrichment, and analytical workflows.
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 LlamaIndex 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 LlamaIndex via MCP
Follow these steps to integrate the InvoiceXpress (Online Invoicing) MCP Server with LlamaIndex.
Install dependencies
Run pip install llama-index-tools-mcp llama-index-llms-openai
Replace the token
Replace [YOUR_TOKEN_HERE] with your Vinkius token
Run the agent
Save to agent.py and run: python agent.py
Explore tools
The agent discovers 16 tools from InvoiceXpress (Online Invoicing)
Why Use LlamaIndex with the InvoiceXpress (Online Invoicing) MCP Server
LlamaIndex provides unique advantages when paired with InvoiceXpress (Online Invoicing) through the Model Context Protocol.
Data-first architecture: LlamaIndex agents combine InvoiceXpress (Online Invoicing) tool responses with indexed documents for comprehensive, grounded answers
Query pipeline framework lets you chain InvoiceXpress (Online Invoicing) tool calls with transformations, filters, and re-rankers in a typed pipeline
Multi-source reasoning: agents can query InvoiceXpress (Online Invoicing), a vector store, and a SQL database in a single turn and synthesize results
Observability integrations show exactly what InvoiceXpress (Online Invoicing) tools were called, what data was returned, and how it influenced the final answer
InvoiceXpress (Online Invoicing) + LlamaIndex Use Cases
Practical scenarios where LlamaIndex combined with the InvoiceXpress (Online Invoicing) MCP Server delivers measurable value.
Hybrid search: combine InvoiceXpress (Online Invoicing) real-time data with embedded document indexes for answers that are both current and comprehensive
Data enrichment: query InvoiceXpress (Online Invoicing) to augment indexed data with live information before generating user-facing responses
Knowledge base agents: build agents that maintain and update knowledge bases by periodically querying InvoiceXpress (Online Invoicing) for fresh data
Analytical workflows: chain InvoiceXpress (Online Invoicing) queries with LlamaIndex's data connectors to build multi-source analytical reports
InvoiceXpress (Online Invoicing) MCP Tools for LlamaIndex (16)
These 16 tools become available when you connect InvoiceXpress (Online Invoicing) to LlamaIndex 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 LlamaIndex
Ready-to-use prompts you can give your LlamaIndex 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 LlamaIndex
Common issues when connecting InvoiceXpress (Online Invoicing) to LlamaIndex through the Vinkius, and how to resolve them.
BasicMCPClient not found
pip install llama-index-tools-mcpInvoiceXpress (Online Invoicing) + LlamaIndex FAQ
Common questions about integrating InvoiceXpress (Online Invoicing) MCP Server with LlamaIndex.
How does LlamaIndex connect to MCP servers?
Can I combine MCP tools with vector stores?
Does LlamaIndex support async MCP calls?
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Connect InvoiceXpress (Online Invoicing) to LlamaIndex
Get your token, paste the configuration, and start using 16 tools in under 2 minutes. No API key management needed.