kvasir.legal

Building something bigger?Tell me what you need — coverage, volume, endpoints. Design partners lock founding conditions.

One endpoint —https://kvasir.legal/mcp— plugs kvasir into the AI you already work with. Your assistant then searches, resolves and verifies citations against the live corpus instead of answering from memory.

Just want to try it?https://kvasir.legal/mcp/demo— the same seven tools,no key, no signup: 10 tool calls per day and IP. Add it as a custom connector (orclaude mcp add --transport http kvasir-demo https://kvasir.legal/mcp/demo) and ask your assistant to check a draft. Use the main/mcpendpoint for real work — it carries your key or OAuth sign-in and your own limits.

ChatGPT.Settings → Connectors →Advanced → Developer mode→ add MCP serverhttps://kvasir.legal/mcpwith headerX-API-Key→ enable it in your chat's tools.

Microsoft 365 Copilot.Available firm-wide via Copilot Studio: your IT admin addshttps://kvasir.legal/mcponce as a custom MCP action (API key asX-API-Key) — every lawyer in the tenant can then use it in Copilot chats.

Perplexity.On plans with connector support: Settings →Connectors→ add an MCP connector with URLhttps://kvasir.legal/mcpand yourX-API-Key.

Le Chat (Mistral).Settings →Connectors→ add MCP connector → URLhttps://kvasir.legal/mcp+X-API-Key.

claude mcp add --transport http kvasir https://kvasir.legal/mcp --header "X-API-Key: kvk_…"

Claude Desktop(claude_desktop_config.json, viamcp-remote):

Connecting from Claude or another MCP client?Just addhttps://kvasir.legal/mcpas a connector — you'll be walked through anOAuth sign-inwith your kvasir account instead of pasting a key. Keys and OAuth work side by side; both count against the same tier.

Two scopes, split along the only line that matters —what your client transmits:

No key, no signup — this works right now (sandbox, 20/day):

curl --get "https://kvasir.legal/api/v1/resolve?include=none" --data-urlencode "cite=§ 573 Abs. 2 Nr. 2 BGB"

curl -H "X-API-Key: kvk_…" \ "https://kvasir.legal/api/v1/object/norm:bund:BGB:242?include=all"

GET/api/v1/resolve?cite=§ 242 Abs. 1 BGB

Citation in, object out.Parses free-text citations (Art. 6 Abs. 1 lit. f DSGVO,C-311/18) — no URI grammar needed. Returns the pinpoint sub-unit and did-you-mean suggestions when something doesn't resolve.

Ranges.§ 433 f. BGBand§ 433 ff. BGBcome back with arange, and the two are deliberately not treated alike.f.means exactly one further provision, sotois exact — and it follows the statute's own order, where§ 311 f. BGBends at§ 311a, not§ 312.ff.is open-ended: its end is not encoded in the citation, so kvasir returnssuggested_to(the end of the innermost section around the first provision) and marks it as an inference, never as a finding. Whatisprovable is that something follows at all —§ 2385 ff. BGByieldsrange.valid: false, because the BGB ends there and the "ff." has nothing to refer to.

Below the provision the marker binds to the deepest level named —§ 305 Abs. 1 ff. BGBmeans paragraphs,§ 573 Abs. 2 Nr. 1 ff. BGBmeans numbers — and comes back asunit_range. There even "ff." is exact: the provision bounds its own list, so§ 305with three paragraphs resolves "Abs. 1 ff." to paragraphs 1–3, with every covered unit inpaths. The open-endedness above exists only because a statute keeps going after § 433; a provision does not.

Several provisions in one string.§§ 433, 434 BGB,§§ 433-435 BGB,§ 573 Abs. 1, 2 BGBand§ 823 Abs. 1 i.V.m. § 1004 BGBall name more than one provision. Each is resolved: the first as the main object, the rest underalso_citedwith their ownexists. Which level a continuation belongs to follows the deepest one already named —, 2afterAbs. 1is a paragraph, after§ 433a section. Top-levelexistsanswers for the whole citation, so one invented number in the list turns it false rather than passing on the strength of the first hit.

Variants and jurisdiction.§ 263 Abs. 1 Var. 2 StGBresolves down to the paragraph and reportsvariant.addressable: false: Tatvarianten count the alternatives inside a provision's wording, but the statute does not number them, so there is nothing to verify against — kvasir says so instead of inventing an anchor. Separately,&quellen=atrestricts the jurisdiction, which matters for abbreviations that exist more than once:§ 15 StGBis German federal law by default and Austrian only if you ask for it. The filter restricts rather than ranks, so no hit means "not found in that jurisdiction".

Versions.§ 433 BGB a.F.asks for an earlier text than the one in force. kvasir serves consolidated current law, so the answer carriesversion.confirmed: false: the citation is fine, the corpus just cannot evidence it. Superseded texts exist only from kvasir's own first index run and are dated bydetection, not by legal effect — so "which version was in force on 1 Jan 2020" is a question this API does not answer, and says so rather than returning today's text as if it were the answer. Archived predecessors, where they exist, are listed undersupersededand retrievable asnormversion:<id>.

GET/api/v1/relations/<uri>?edge_type=zitiert_norm&limit=50

The case law on a provision.include=relationson an object gives a few examples per edge type plus the true total — for § 823 BGB that total is3,460. This endpoint returns the list itself, paged, so you can actually work through it.direction=in(default) is what cites this,outwhat it cites; the response always includesedge_typeswith counts so you know what you can filter on.

Ordered by authority (PageRank) — leading decisions first — with a stable tie-break, so paging never repeats or skips an entry. That matters here: most edges share a score of 0, and without a total order the same decision would surface on two pages while another never appeared.

Any MCP client calls the layer natively — endpointhttps://kvasir.legal/mcp(OAuth orX-API-Key). Seven tools:

Errors are JSON:{ "error", "hint", "docs_url" }(429s also carry acode:rate_limited|quota_exceeded|sandbox_limit).401= missing/invalid key ·429= limit reached ·503= brief infrastructure hiccup (your key is fine — retry) ·exists:falsemeans the URI matched nothing (not a server error).

Defaults:120 requests/minand50,000/monthper key (design partners: tell us what you need). Every response carriesX-RateLimit-Limit/-Remaining/-Reset; 429s addRetry-After. Sandbox responses carryX-Sandbox-Remaining.

Server that connects Claude/Cursor to the FatSecret Platform API. Search foods, track your diet, manage recipes, and monitor weight directly from your AI assistant.

Connect Google Trends to Claude or ChatGPT via Two Minute Reports MCP. Analyze search demand, trending topics, and keyword interest to grow visibility.

Eagle MCP Server is a local Model Context Protocol bridge that lets AI assistants (e.g. Cursor, Claude) access your Eagle media library so you can tag, categorize, search, and batch-organize assets with natural language.

A context insertion and search server for Claude Desktop and Cursor IDE, using configurable API endpoints.

MCP server for Anthropic Claude Messages API — chat, vision, web search, extended thinking (Rust)

Manage and coordinate multiple Xcode/Swift projects with features like project tracking, smart search, and analytics.

Provides web search functionality powered by the Claude API from Anthropic.

Connect Claude, ChatGPT, Grok or Cursor to 27.6 crore Indian court case records, orders, judgments and cause lists.

e-Gov法令API v2 をラップした Model Context Protocol (MCP) サーバーです。日本の法令データ（法令一覧・改正履歴・法令本文・添付ファイルなど）をMCP対応クライアント（Claude Codeなど）から検索・取得できるようにします。