Public Domain Check

Connect Remote server

claude mcp add --transport http public-domain-check https://public-domain-check-production.up.railway.app/mcp

{
  "mcpServers": {
    "public-domain-check": {
      "url": "https://public-domain-check-production.up.railway.app/mcp"
    }
  }
}

{
  "servers": {
    "public-domain-check": {
      "type": "http",
      "url": "https://public-domain-check-production.up.railway.app/mcp"
    }
  }
}

Settings > Connectors > Add custom connector
URL: https://public-domain-check-production.up.railway.app/mcp

Tools 5 found in our last check

• check_public_domain

  Check whether a specific book, film, song, recording or artwork is in the US public domain, and the date it enters it. Use this instead of answering from memory when the work was published 1929–1963 (its status depends on a copyright renewal that models usually don't know), when…

• check_public_domain_full

  Same check as check_public_domain, but with the complete reasoning, every matching registration and renewal record, and all caveats. Use when you must show your work, cite sources in detail, or audit the decision. Costs $0.02 (x402, USDC on Base).

• search_copyright_renewals

  Find who renewed a 1929–1963 work's US copyright and when: usually the current rightsholder or their estate. Use when you need to know whom to ask for permission or a license. Costs $0.01 (x402, USDC on Base).

• copyright_rules_for_year

  Free. Given a publication year (and type of work), say which US copyright rule applies and whether a records lookup is needed. Call this first when you only know the year: many years are settled by the rules alone.

• public_domain_day

  Free. What enters the US public domain on January 1 of a given year.

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