Popdot AI

What the Popdot AI MCP server does

The Popdot AI MCP server gives an MCP-compatible agent access to Popdot AI, a marketplace for renting verified subdomains. Rental periods range from one hour through one month, and the marketplace offers free 24-hour trials. Payments use x402 USDC on Base for transactions that require payment.

Agents can discover domains without an account or credentials. The available anonymous operations include searching domains, requesting a price quote, checking whether a domain is available, trying a domain, answering the trial canary, and upgrading a trial. Renting a domain is the authenticated operation.

How it works

The repository provides a stdio bridge around Popdot AI's hosted MCP service. An MCP client starts the package as a local process, and the bridge makes the marketplace tools available through that connection. The documented launch command uses npx popdot-mcp.

Clients that support streamable HTTP can connect to Popdot AI directly at https://popdot.ai/api/mcp instead of running the bridge package. The README specifically identifies Claude Desktop and local agent frameworks as stdio use cases.

A typical workflow is to search for candidate subdomains, inspect availability and pricing, try a domain through the trial flow, then upgrade or rent it when the agent has selected a suitable name.

Setup and configuration

Add the package as a stdio MCP server in the client configuration:

{
  "mcpServers": {
    "popdot": {
      "command": "npx",
      "args": ["popdot-mcp"]
    }
  }
}

No environment variables are needed for anonymous discovery and trial-related tools. To call rent_domain, set both POPDOT_SIGIL_ID and POPDOT_PRIVATE_KEY. The first value is the agent's Sigil identifier; the second is a base64-encoded PKCS8 Ed25519 private key. The README states that upgrade_trial can mint the credentials needed for authenticated use.

Tools and capabilities

The Popdot AI MCP server exposes these documented tools:

• search_domains finds domain options.
• get_price_quote retrieves rental pricing.
• check_availability checks whether a domain can be rented.
• try_domain starts the trial path.
• answer_trial_canary handles the trial verification step.
• upgrade_trial upgrades a trial and can mint Sigil credentials.
• rent_domain rents a domain and requires authentication.

The supplied material does not describe the tools' input schemas, response formats, or the exact contents of a domain search result, so those details should be checked in Popdot AI's quickstart or full agent documentation.

Limitations and notes

Anonymous access covers discovery and trial operations, not the final authenticated rental operation. A client must support MCP over stdio to use the bridge package, or streamable HTTP to connect directly to the hosted endpoint. Payment is described as per-transaction x402 USDC on Base; the README does not specify wallet setup, balances, refund behavior, or rental renewal rules. The package is MIT licensed.