r4ck

Connect Remote server

claude mcp add --transport http r4ck https://r4ck.dev/mcp

{
  "mcpServers": {
    "r4ck": {
      "url": "https://r4ck.dev/mcp"
    }
  }
}

{
  "servers": {
    "r4ck": {
      "type": "http",
      "url": "https://r4ck.dev/mcp"
    }
  }
}

Settings > Connectors > Add custom connector
URL: https://r4ck.dev/mcp

Tools 23 found in our last check

• search_servers

  Search every offer by spec, price and place. Returns rows, how the sentence was understood, and facet counts for narrowing. Prices carry the billed amount and an estimated USD per month.

• cheapest

  The lowest priced rows that meet the given minimums, ranked by estimated monthly USD.

• parse_query

  See how a sentence would be read, without running it.

• get_server

  One offer by id with its provider, price history and similar offers.

• compare_servers

  Up to 20 offers side by side.

• facets

  Every facet value with its count, under an optional filter set.

• list_providers

  Hosting providers with their automation (api, cli, terraform, mcp), country, categories and runtimes. Filter with has, country, category, runtime, q.

• get_provider

  A provider by slug or domain, with every offer it sells here.

• deals

  Current hosting deals and industry stories.

• stats

  Counts of servers, providers, countries, GPU offers and the last sync.

• save_search

  Save a filter set under a name on the caller’s account.

• saved_searches

  The caller’s saved searches, each with its URL, curl and CLI form.

• delete_saved_search

  Remove one saved search by id.

• redeem_code

  Redeem a credit code (CR-…) on the caller’s account for days of the pass: no hourly allowance and 500 rows a page on every key, the CLI and MCP while it runs.

• list_invites

  The caller’s invites (quota, status of each) and open affiliate link. Invites are scarce and single use.

• create_invite

  Make one invite link from the caller’s quota. The link is returned once; both sides get days of the pass when a new account is made from it.

• list_webhooks

  The caller’s webhook endpoints (url, event filters, on/off, failures) and the event types r4ck sends: server.listed and server.price_dropped for offers matching a saved search, pass.granted, api_key.created, api_key.revoked.

• create_webhook

  Register an https URL to receive the caller’s events as signed POSTs (CloudEvents body, Standard Webhooks headers). Returns the endpoint and its signing secret (whsec_…), shown once.

• update_webhook

  Change an endpoint’s url, events or description, or switch it on/off (switching on clears its failure count).

• delete_webhook

  Delete an endpoint and its delivery log.

• test_webhook

  Send a signed webhook.test event to the endpoint now and report the HTTP status.

• rotate_webhook_secret

  Mint a new signing secret and return it; the old one stops working at once.

• webhook_deliveries

  Recent deliveries (status, attempts, last HTTP status or error, payload), for one endpoint or all.

Details

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• Arcangel Trademark Search

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• Travel

  Flights and hotels booked in one checkout; tours, events and dining to plan; group trips.

• HeyCAi Clinic Tools

  Front-desk revenue loss calculator and website AI-search check for health clinics, by HeyCAi

• Preferly

  Free AI visibility checks for any website: AI crawler access, llms.txt, schema, business info.

• Tineo

  Plan trips, search flights and hotels, and keep every booking in one shared itinerary.

• Cellarion Wine Registry

  Public wine registry and guides: search wines, grapes, regions, appellations. No account.