MCP-first launch

MCP setup in 5 minutes

Every client below calls the hosted Streamable HTTP endpoint with an Authorization: Bearer header — no local package or clone required (the stdio npm package is not published yet). Free keys get company lookup, connector search/fetch, rankings, and direct relationships; Starter adds the change feed of your own watchlist; Pro adds deeper graph traversal.

Set your API key

All MCP entrypoints expect the same secret. Export it once for local tooling or paste it into the app-specific config.

export REJSTRIK_API_KEY=<YOUR_API_KEY>

Hosted HTTP endpoint

Remote clients can connect directly to https://rejstrik.ai/mcp using Bearer auth.

curl https://rejstrik.ai/mcp \
  -H "Authorization: Bearer <YOUR_API_KEY>" \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list","params":{}}'

Claude Desktop / claude.ai

Remote MCP servers are added through the Connectors UI, not a local config file. Request-header auth (what an API-key server needs) is in beta and limited to some organizations — if you don't see "Request headers" in the dialog, your org doesn't have access yet.

  1. Go to Customize -> Connectors (Team/Enterprise: Organization settings -> Connectors, then Admins add it there).
  2. Click "Add custom connector" and enter the MCP server URL: https://rejstrik.ai/mcp
  3. Authentication: choose "No sign-in".
  4. Open "Request headers" (beta — only visible if your organization has access) and add: Authorization = Bearer <YOUR_API_KEY>.
  5. Click "Add", then enable the connector for your conversation from the "+" menu.

Claude Code

Claude Code supports remote HTTP MCP servers via claude mcp add --transport http.

claude mcp add --transport http rejstrik https://rejstrik.ai/mcp \
  --header "Authorization: Bearer <YOUR_API_KEY>"

ChatGPT developer mode

ChatGPT cannot send an API-key header, so it connects through OAuth (sign in with rejstrik.ai) or without an account for anonymous search and fetch.

Settings → Security and login → Developer mode (on)
Plugins → Add → Create MCP App
  URL:            https://rejstrik.ai/mcp
  Authentication: OAuth or no authentication

No account: search + fetch (legal entities only).
Sign in with rejstrik.ai: the full tool set on your account's credits.

Hledáte plugin pro ChatGPT? Rejstřík AI v ChatGPT — návod a ukázky

Any other MCP client

Every client above talks to the same hosted Streamable HTTP endpoint with a Bearer header — no local package or clone required. Point any MCP client that supports a remote HTTP server at it.

  • Endpoint: https://rejstrik.ai/mcp
  • Auth header: Authorization: Bearer <YOUR_API_KEY>
  • Transport: Streamable HTTP