Vaquill AI

Vaquill AI provides access to more than 5.4 million primary-law sections across all 56 US jurisdictions (federal plus 50 states, DC, Puerto Rico, Guam, the Northern Mariana Islands, the US Virgin Islands and American Samoa). Each section is delivered with its citation and a link to its official source. The service supports citation resolution (including Bluebook-style citations), point-in-time queries via an asOf parameter, change alerts by webhook or email, and multiple formats including plain text, HTML, PDF, XML and DOCX where available. It also serves state session laws as passed for 2025 sessions. Access is offered through a hosted REST API, an MCP server for tools such as Claude, Cursor and VS Code, and SQL querying over the object store, plus a vector index option. The page states the corpus is downloadable as an open dataset free for non-commercial use under CC BY-NC 4.0. Case law is not covered according to the page's FAQ. Free credits are offered for personal projects, student work, and academic research, and the page lists Pro and Business plans with API credit allotments.

Key features

• REST API for looking up law section by section
• MCP server giving statute search and section lookup as native tools in Claude, Cursor and VS Code
• SQL querying of the corpus over the object store
• Vector index for AI search retrieval
• Citation resolution from Bluebook or state court citation forms
• Point-in-time queries using an asOf parameter
• Law change alerts by signed webhook or email, with old and new text
• Section text available as styled HTML, plain text, publisher PDF and XML, and DOCX where offered
• Open dataset of the full corpus as Parquet under CC BY-NC 4.0
• Session laws for 2025 sessions across 50 jurisdictions with signing and effective dates
• Federal agency guidance stored separately and filterable by source

Best suited for

• Developers building products that need US statutes and regulations
• Lawyers verifying legal answers in AI tools such as Claude or ChatGPT
• Legal tech and compliance platforms tracking US jurisdictions
• AI teams grounding agents in US primary law
• Students, academic researchers and personal projects using free credits
• Legal aid and civil justice organizations applying for free access

Pricing

Pro plan includes 20,000 API credits monthly and law change alerts by email. Business plan includes 200,000 API credits monthly with webhook alerts and point-in-time state law. Business is available at a reduced rate for bootstrapped teams under 10 people by contacting the company. Free credits are offered for personal projects, student work and academic research. Data licensing and bulk access is custom-priced via contact. Sign-up is required to see pricing details.