Documentation

Connect your agent

LexLint is an MCP server at https://mcp.lexlint.org/mcp. Every tool requires an UnGovr API key, passed as an X-API-Key header. Mint one free at https://www.ungovr.org/open-data/api-keys

Claude Code

claude mcp add --transport http lexlint https://mcp.lexlint.org/mcp \ --header "X-API-Key: <your-ungovr-api-key>"

Any MCP client (JSON configuration)

{ "mcpServers": { "lexlint": { "type": "http", "url": "https://mcp.lexlint.org/mcp", "headers": { "X-API-Key": "<your-ungovr-api-key>" } } } }

LexLint stores nothing: your key is passed through to the UnGovr Open Data API on every call, and the upstream free tier (currently 50 requests per day) is the only meter. Rate-limit and authentication errors come back from upstream unchanged.

Tool reference

lint_app_profile

The lint. Declare what the app does and where it runs; get findings back.

Argument	Type	Meaning
`activities`	string[]	What the app does. Allowed values: `crawls_web`, `trains_models`, `generates_content`, `deploys_chatbot`, `processes_voice`, `processes_biometrics`, `automated_outreach`, `high_risk_decisions`
`jurisdictions`	string[]	Jurisdiction slugs, lowercase: `us`, `us/ca`, `eu`, `de`, `kr`, and so on

Each finding carries severity, jurisdiction, summary, citation, as_of_date, stale, and confidence. Unknown argument names and unknown activity values are refused with an error rather than silently ignored, so a typo cannot produce a falsely clean run.

get_ai_law

One jurisdiction's AI-law entries. Argument: jurisdiction (slug).

get_scraping_law

The scraping and access legality summary for a jurisdiction: verdict-level crawl policy, a per-scenario access matrix, robots.txt legal weight, and TDM opt-out status. Argument: jurisdiction (slug). Resolution walks to the most specific jurisdiction with data and reports the walk.

resolve_domain_jurisdiction

Maps a hostname or URL to the jurisdiction whose law governs its operator, for feeding into the other tools. Argument: domain. IP addresses are refused: a server's location is not the legal signal, the operator's establishment is.

The severity model

Severity	Meaning
ERROR	The declared activity appears prohibited or presumptively unlawful in that jurisdiction. Stop and get counsel.
WARN	An obligation applies to your declared profile, or LexLint lacks current data for a jurisdiction you declared. Either way: go look.
INFO	A disclosure, labeling, or registration duty worth knowing about, typically with a phase-in date.

Three rules keep the output honest. A jurisdiction LexLint has no current data for is a WARN, never a silent pass. Every finding carries its as-of date and a staleness flag, because laws change faster than corpora. And the passing state is no basic issues found: the word "compliant" does not appear in LexLint output, because a lint cannot know that.