Obsidian Regulatory MCP server

Obsidian Regulatory MCP

The verified, tier-0 regulatory data layer for your AI. Connect Claude, ChatGPT, or Cursor to official regulatory data, with a source, date, and status on every answer.

Obsidian Regulatory MCP is a Model Context Protocol server that gives AI assistants real-time access to verified regulatory data from 850+ official, tier-0 sources across 50+ jurisdictions (Chemicals, ESG, Life Sciences). It is the missing data layer that stops AI from hallucinating on regulation.

• 🌐 Website and access: https://obsidianri.com/mcp
• 🟢 Status: live. Sign in with Obsidian (OAuth 2.1), no API key. Free tier, no credit card.

Why this exists

Frontier models reason brilliantly but guess on regulation: hallucinated citations, stale texts, and no way to tell a draft from a law in force. In compliance, a confident wrong answer is a liability.

The fix is not a smarter model, it is a verified source of truth the model can call. You already have the intelligence. Obsidian brings the data.

Read the thesis: Agentic Regulatory Intelligence · Why AI Hallucinates on Regulatory Questions · RAG vs MCP · What Tier-0 Regulatory Data Means

Works with

Claude (Desktop and Claude Code), Cursor, and any MCP-compatible client. ChatGPT and Perplexity as MCP support rolls out across them.

Quickstart

No API key to copy. Add the connector URL; on first use your assistant opens a browser to sign in with Obsidian (OAuth 2.1). New accounts get the free tier automatically. Full walkthrough: How to Connect a Regulatory MCP to Claude.

Claude Desktop / Cursor

Add a custom connector pointing at:

https://mcp.obsidianri.com/mcp

No auth headers needed: the client discovers the OAuth flow automatically and prompts you to sign in.

Claude Code

claude mcp add --transport http obsidian-regulatory https://mcp.obsidianri.com/mcp

Then authorize in the browser when prompted. See also examples/ for raw config.

Auth is OAuth 2.1 (sign in with your Obsidian account). The free tier needs no credit card.

What you get

• 850+ official, tier-0 sources across 50+ jurisdictions (EU, US, UK, CH, APAC, and more)
• Every result returned with its source, date, jurisdiction, framework, and status
• Coverage of REACH, CLP, TSCA, CSRD, ESRS, EU Taxonomy, CS3D, MDR, IVDR, FDA 21 CFR, the AI Act, and more
• Free tier: 100 verified requests per month, no credit card

Example tools

The server exposes structured tools your assistant calls in natural language:

Shortened. The full README is on GitHub.