São Paulo legal data from official sources, structured for AI and legaltech.
Access 99,061+ São Paulo court decisions and judicial materials from the Tribunal de Justiça do Estado de São Paulo (TJSP), the state's highest court, through 1 official portal. Search São Paulo legal data directly or connect it to your AI agent, legaltech product or research workflow through Lawstronaut's API and MCP server. Every record is linked to its official source and structured in the same format used across more than 150 jurisdictions.
99,061+
São Paulo legal records
1
official São Paulo source portal
1
issuing authority
Daily
updates
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Where can I find a São Paulo state court decision on an ICMS (state VAT) dispute?
The Tribunal de Justiça do Estado de São Paulo (TJSP) appellate decision in Apelação Cível nº 1012363-22.2016.8.26.0590 — a civil appeal concerning ICMS (Imposto sobre Circulação de Mercadorias), decided 23 January 2026 — is available with a link to its official acórdão on the TJSP e-SAJ system.
Source: Tribunal de Justiça do Estado de São Paulo (TJSP) — esaj.tjsp.jus.br/cjsg/getArquivo.do?cdAcordao=20073506
Retrieved: 2026-08-07 · Version: 1 · Cited in-turn
The official São Paulo sources we cover
Lawstronaut collects São Paulo legal materials from the official court source. Each record links back to its original source, with metadata such as issuing authority, decision date, legal link, portal, content type, and version where available.
Source categories: state courts and the judiciary (Tribunal de Justiça do Estado de São Paulo)
- Tribunal de Justiça do Estado de São Paulo — TJSP (tjsp.jus.br)
São Paulo legal source types covered
São Paulo coverage centres on second-instance court decisions from the Tribunal de Justiça do Estado de São Paulo. Primary and secondary legislation, regulatory guidance, and legislative history for matters governed by federal law are covered under the separate Brazil (federal) jurisdiction.
Case Law
Acórdãos (appellate decisions) of the Tribunal de Justiça do Estado de São Paulo — civil appeals, interlocutory appeals, remessa necessária and declaratory embargoes — taken directly from the TJSP e-SAJ jurisprudence system (esaj.tjsp.jus.br), each linked to its official acórdão PDF and CNJ process number.
Subject-Matter Coverage
Decisions span São Paulo tax disputes (ICMS, IPVA, IRPF), administrative and public-law matters, public-sector remuneration, procurement, and civil liability, tagged by case type and subject where available.
Legislation & Regulations
São Paulo court decisions apply Brazil's federal codes and statutes; consolidated legislation, decretos, and medidas provisórias are covered in the separate Brazil (federal) jurisdiction rather than in this state-level corpus.
Legislative History
Versioned records and amendment history for federal instruments are available under the Brazil (federal) jurisdiction. São Paulo records here are point-in-time judicial decisions, each tied to its official source and version.
One São Paulo legal data layer. Four ways to use it.
Lawstronaut API
Query São Paulo court decisions through a REST API. Use structured metadata, full text, Markdown, source links, and version history to power legaltech products, litigation-research workflows, and internal research tools.
GET /v2/contents?iso=BR_SP&limit=20Lawstronaut MCP
Connect ChatGPT, Claude, Gemini, Cursor, and other AI agents to São Paulo court sources. Questions become live searches against the corpus and return citation-ready answers grounded in official TJSP materials — deployable in minutes, with no integration work.
AI Agent Integration
Give your legal AI agent same-turn provenance: it retrieves current São Paulo court decisions — official source links, metadata, and full text — before generating an answer, with a citation and timestamp on every response.
Build with Lawstronaut
Build São Paulo case-law search, monitoring, litigation-analytics, and legal AI features without crawling, parsing, normalizing, and updating the TJSP source yourself. We handle source discovery, ingestion, normalization, versioning, and change detection; you build the product.
What you can do with São Paulo legal data
- Retrieve decision metadata, full text, Markdown, source links, and original acórdão PDFs where available
- Filter by jurisdiction, portal, issuing authority, authority type, language, status, CNJ process number, and dates
- Access official legal links for citation and audit trails — citation, timestamp, and source link returned in the same turn
- Track point-in-time versions of São Paulo court decisions
- Run Horizon Scanning — track newly published TJSP decisions, when and where, without manual monitoring
- Connect AI agents to official São Paulo court sources through MCP; use the API for search, monitoring, and AI ingestion workflows
- Build internal São Paulo litigation-research tools without maintaining your own crawler stack
Why Lawstronaut for São Paulo legal research
São Paulo judicial information is published through the TJSP e-SAJ jurisprudence system as a continuous stream of appellate decisions. For humans, sifting that volume is slow. For AI systems, it's a bigger problem: bulk source access, inconsistent formats, missing provenance, and weak citation trails.
Lawstronaut turns that source into one structured legal data layer — source links, metadata, full text, versioning, and API/MCP access. Your product or agent retrieves the decision directly instead of relying on generic web search or unverified model memory. Every answer carries a citation, a timestamp, and a link to the official acórdão — the provenance that makes a legal research platform defensible to auditors and regulators.
About São Paulo legal coverage
São Paulo is Brazil's most populous state, and the Tribunal de Justiça do Estado de São Paulo (TJSP) is its highest court and the busiest court in the country. Brazil is a civil-law federal republic, so São Paulo courts apply federal codes and statutes alongside state law. Lawstronaut's São Paulo coverage centres on TJSP second-instance decisions (acórdãos) — civil appeals, interlocutory appeals, remessa necessária, and declaratory embargoes — published through the TJSP e-SAJ jurisprudence system (esaj.tjsp.jus.br). Records are published in Portuguese, each linked to its official acórdão PDF and CNJ process number. Federal legislation, regulatory guidance, and superior-court case law are covered separately under the Brazil (federal) jurisdiction.
São Paulo case law moves quickly: the TJSP publishes tens of thousands of decisions continuously, spanning fast-changing areas such as ICMS and IPVA tax disputes, public-sector remuneration, procurement, and civil liability. Point-in-time data straight from the source is what keeps a São Paulo legal research answer correct today.
Built for
Legaltech companies
Build São Paulo case-law search, monitoring, litigation-analytics, and AI research features without maintaining your own court-source pipeline.
Litigation & disputes teams
Monitor new TJSP decisions and track how São Paulo courts rule on tax, administrative, and civil-liability matters — without a manual monitoring rota.
AI builders
Ground legal AI answers in official São Paulo court text, source links, and metadata — answers that survive an auditor.
Internal legal teams
Give lawyers and business users faster access to São Paulo court sources through AI agents and internal tools, without hiring a researcher per jurisdiction.
Frequently asked questions
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