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Vercel AI SDKSDK
CNJ (Datajud API Pública) MCP Server

Bring Judicial Records
to Vercel AI SDK

Learn how to connect CNJ (Datajud API Pública) to Vercel AI SDK and start using 3 AI agent tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code.

MCP Inspector GDPR Free for Subscribers
Search Process By NumberSearch Processes AdvancedSearch Processes By Class And Organ

Compatible with every major AI agent and IDE

ClaudeClaude
ChatGPTChatGPT
CursorCursor
GeminiGemini
WindsurfWindsurf
VS CodeVS Code
JetBrainsJetBrains
VercelVercel
+ other MCP clients
CNJ (Datajud API Pública)

What is the CNJ (Datajud API Pública) MCP Server?

Connect to the CNJ Datajud Public API to perform deep searches across the Brazilian judicial system. This server allows AI agents to retrieve detailed metadata about lawsuits, court movements, and procedural history directly from the official national database.

What you can do

  • Search by CNJ Number — Retrieve full details of a specific lawsuit using its unique unformatted numbering and the target court alias.
  • Class & Organ Filtering — Find processes categorized by their Procedural Class (TPU) and specific Court Organ codes.
  • Advanced Elasticsearch Queries — Execute complex searches using the full power of Elasticsearch Query DSL to filter by dates, parties, or specific metadata fields.
  • Court Coverage — Access data from various courts including TRFs, TJs, TST, and more via their respective API aliases.

How it works

  1. Subscribe to this server
  2. Enter your CNJ Datajud API Key
  3. Start querying the Brazilian judicial database from Claude, Cursor, or any MCP-compatible client

Who is this for?

  • Legal Professionals — Quickly check the status and history of lawsuits without manual portal navigation.
  • Compliance Teams — Automate background checks and legal risk assessments using official government data.
  • Researchers & Analysts — Perform bulk queries and advanced data extraction for legal statistics and trends.

Built-in capabilities (3)

search_process_by_number

g., api_publica_trf1, api_publica_tjsp). Search for a specific judicial process by its CNJ number

search_processes_advanced

Execute an advanced Elasticsearch query against the Datajud API

search_processes_by_class_and_organ

Search processes by Procedural Class and Court Organ

Why Vercel AI SDK?

The Vercel AI SDK gives every CNJ (Datajud API Pública) tool full TypeScript type inference, IDE autocomplete, and compile-time error checking. Connect 3 tools through Vinkius and stream results progressively to React, Svelte, or Vue components. works on Edge Functions, Cloudflare Workers, and any Node.js runtime.

  • TypeScript-first: every MCP tool gets full type inference, IDE autocomplete, and compile-time error checking out of the box

  • Framework-agnostic core works with Next.js, Nuxt, SvelteKit, or any Node.js runtime. same CNJ (Datajud API Pública) integration everywhere

  • Built-in streaming UI primitives let you display CNJ (Datajud API Pública) tool results progressively in React, Svelte, or Vue components

  • Edge-compatible: the AI SDK runs on Vercel Edge Functions, Cloudflare Workers, and other edge runtimes for minimal latency

See it in action

CNJ (Datajud API Pública) in Vercel AI SDK

AI AgentVinkius
High Security·Kill Switch·Plug and Play
Why Vinkius

CNJ (Datajud API Pública) and 4,000+ other MCP servers. One platform. One governance layer.

Teams that connect CNJ (Datajud API Pública) to Vercel AI SDK 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.

4,000+MCP Servers ready
<40msCold start
60%Token savings
Raw MCP
Vinkius
Server catalogFind and host yourself4,000+ managed
InfrastructureSelf-hostedSandboxed V8 isolates
Credential handlingPlaintext in configVault + runtime injection
Data loss preventionNoneConfigurable DLP policies
Kill switchNoneGlobal instant shutdown
Financial circuit breakersNonePer-server limits + alerts
Audit trailNoneEd25519 signed logs
SIEM log streamingNoneSplunk, Datadog, Webhook
HoneytokensNoneCanary alerts on leak
Custom domainsNot applicableDNS challenge verified
GDPR complianceManual effortAutomated purge + export
Enterprise Security

Why teams choose Vinkius for CNJ (Datajud API Pública) in Vercel AI SDK

The CNJ (Datajud API Pública) 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 3 tools execute in hardened sandboxes optimized for native MCP execution.

Your AI agents in Vercel AI SDK 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.

CNJ (Datajud API Pública)
Fully ManagedVinkius Servers
60%Token savings
High SecurityEnterprise-grade
IAMAccess control
EU AI ActCompliant
DLPData protection
V8 IsolateSandboxed
Ed25519Audit chain
<40msKill switch
Stream every event to Splunk, Datadog, or your own webhook in real-time

* 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

The Vinkius Advantage

How Vinkius secures CNJ (Datajud API Pública) for Vercel AI SDK

Every tool call from Vercel AI SDK to the CNJ (Datajud API Pública) MCP Server is protected by DLP redaction, cryptographic audit chains, V8 sandbox isolation, kill switch, and financial circuit breakers.

< 40msCold start
Ed25519Signed audit chain
60%Token savings
FAQ

Frequently asked questions

01

How do I find a process if I only have the CNJ number?

Use the search_process_by_number tool. You will need the unformatted digits of the process and the specific court alias (e.g., api_publica_tjsp for São Paulo State Court).

02

Can I list multiple processes from a specific court organ?

Yes, use search_processes_by_class_and_organ. Provide the court alias, the procedural class code, and the organ code. You can also control the result size and use pagination.

03

What is the 'Advanced Search' tool for?

The search_processes_advanced tool allows you to send a raw Elasticsearch query body. This is useful for complex filtering that isn't covered by standard search tools, such as filtering by specific dates or nested metadata.

04

How does the Vercel AI SDK connect to MCP servers?

Import createMCPClient from @ai-sdk/mcp and pass the server URL. The SDK discovers all tools and provides typed TypeScript interfaces for each one.

05

Can I use MCP tools in Edge Functions?

Yes. The AI SDK is fully edge-compatible. MCP connections work on Vercel Edge Functions, Cloudflare Workers, and similar runtimes.

06

Does it support streaming tool results?

Yes. The SDK provides streaming primitives like useChat and streamText that handle tool calls and display results progressively in the UI.

07

createMCPClient is not a function

Install: npm install @ai-sdk/mcp

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