Compatible with every major AI agent and IDE
What is the Paraíba Open Data MCP Server?
The Paraíba MCP Server connects your AI agent to the official Dados Abertos portal of the State of Paraíba. This integration allows for real-time auditing and analysis of public finances, government contracts, and personnel spending through natural conversation.
What you can do
- Budget & Finance — Query budget allocations (
get_dotacao), liquidations (get_liquidacao), and revenue execution or forecasts. - Public Spending — Inspect commitment notes (
get_empenho), daily allowances for public servants (get_diarias), and payment authorizations. - Human Resources — Access detailed payroll summaries (
get_folha_pagamento) to monitor state personnel costs. - Contracts & Agreements — List and analyze government contracts (
get_contratos) and outstanding payables (Restos a Pagar). - Institutional Structure — Retrieve information about management units, government actions, and resource sources.
How it works
- Subscribe to this server
- Enter your API access token for the Paraíba data proxy
- Start auditing public data from Claude, Cursor, or any MCP-compatible client
Who is this for?
- Journalists & Researchers — Instantly aggregate spending data for investigative reports without manual CSV exports.
- Public Auditors & Lawyers — Cross-reference contracts and payment authorizations directly from your workspace.
- Engaged Citizens — Exercise transparency by asking simple questions about how state resources are allocated.
Built-in capabilities (20)
Get Ação Governamental (Government Action) data
Get Autorizações de Pagamento (Payment Authorizations) data
Get Contratos (Contracts) data
Get Aditivos de Contratos (Contract Addendums) data
Get Convênios (Covenants/Agreements) data
Get Despesa Orçamentária - Diárias (Daily Allowances) data
Get Dotação Orçamentária (Budget Allocation) data
Get Elemento da Despesa (Expense Element) data
Get Despesa Orçamentária - Notas de Empenho (Commitment Notes) data
Get Resumo da Folha de Pagamento (Payroll Summary) data
Get Fonte de Recurso (Resource Source) data
Get Função (Function) data
Get Liquidação (Liquidation) data
Get Modalidade de Licitação (Bidding Modality) data
Get Receitas - Execução (Revenue Execution) data
Get Receitas - Previsão (Revenue Forecast) data
Get Restos a Pagar (Outstanding Payables) data
Get Sub Função (Sub-function) data
Get Unidade Gestora (Managing Unit) data
Get Unidade Orçamentária (Budgetary Unit) data
Why LangChain?
LangChain's ecosystem of 500+ components combines seamlessly with Paraíba Open Data through native MCP adapters. Connect 20 tools via Vinkius and use ReAct agents, Plan-and-Execute strategies, or custom agent architectures. with LangSmith tracing giving full visibility into every tool call, latency, and token cost.
- —
The largest ecosystem of integrations, chains, and agents. combine Paraíba Open Data MCP tools with 500+ LangChain components
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Agent architecture supports ReAct, Plan-and-Execute, and custom strategies with full MCP tool access at every step
- —
LangSmith tracing gives you complete visibility into tool calls, latencies, and token usage for production debugging
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Memory and conversation persistence let agents maintain context across Paraíba Open Data queries for multi-turn workflows
Paraíba Open Data in LangChain
Paraíba Open Data and 4,000+ other MCP servers. One platform. One governance layer.
Teams that connect Paraíba Open Data to LangChain through Vinkius don't need to source, host, or maintain individual MCP servers. Every tool call runs inside a hardened runtime with credential isolation, DLP, and a signed audit chain.
Raw MCP | Vinkius | |
|---|---|---|
| Server catalog | Find and host yourself | 4,000+ managed |
| Infrastructure | Self-hosted | Sandboxed V8 isolates |
| Credential handling | Plaintext in config | Vault + runtime injection |
| Data loss prevention | None | Configurable DLP policies |
| Kill switch | None | Global instant shutdown |
| Financial circuit breakers | None | Per-server limits + alerts |
| Audit trail | None | Ed25519 signed logs |
| SIEM log streaming | None | Splunk, Datadog, Webhook |
| Honeytokens | None | Canary alerts on leak |
| Custom domains | Not applicable | DNS challenge verified |
| GDPR compliance | Manual effort | Automated purge + export |
Why teams choose Vinkius for Paraíba Open Data in LangChain
The Paraíba Open Data 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. All 20 tools execute in hardened sandboxes optimized for native MCP execution.
Your AI agents in LangChain only access the data you authorize, with DLP that blocks sensitive information from ever reaching the model, kill switch for instant shutdown, and up to 60% token savings. Enterprise-grade infrastructure, zero maintenance.

* 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
How Vinkius secures
Paraíba Open Data for LangChain
Every tool call from LangChain to the Paraíba Open Data MCP Server is protected by DLP redaction, cryptographic audit chains, V8 sandbox isolation, kill switch, and financial circuit breakers.
Frequently asked questions
Can I see the total payroll for a specific month and year?
Yes! Use the get_folha_pagamento tool by providing the exercicio (year) and mes (month). The agent will return a summary of personnel spending for that period.
How do I check government contracts for a specific year?
You can use the get_contratos tool with the exercicio parameter. This will list the contracts registered in the state's system for the requested year.
Is it possible to track outstanding debts (Restos a Pagar)?
Yes, the get_restos_a_pagar tool allows you to fetch data on expenses that were committed but not yet paid from previous fiscal years.
How does LangChain connect to MCP servers?
Use langchain-mcp-adapters to create an MCP client. LangChain discovers all tools and wraps them as native LangChain tools compatible with any agent type.
Which LangChain agent types work with MCP?
All agent types including ReAct, OpenAI Functions, and custom agents work with MCP tools. The tools appear as standard LangChain tools after the adapter wraps them.
Can I trace MCP tool calls in LangSmith?
Yes. All MCP tool invocations appear as traced steps in LangSmith, showing input parameters, response payloads, latency, and token usage.
MultiServerMCPClient not found
Install: pip install langchain-mcp-adapters
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