# Popdot AI

Lets an agent search, price and rent subdomains, with a free trial and per-transaction USDC payments on Base.

- MCP server · `type=mcp` · Claude Code, Codex, Cursor, GitHub Copilot, Windsurf (Devin Desktop), Cline, Zed, Gemini CLI
- Author: popdot-ai
- License: not stated · policy=link-only · description only; the file stays with the author
- Source: https://github.com/popdot-ai/popdot-mcp
- Updated: 2026-09-21
- HTML: https://affpapa.org/en/nevibecode/mcp/popdot-ai

## What it does

Popdot AI is a subdomain rental marketplace aimed at AI agents. The server hands your agent tools for finding domains, checking whether one is taken, and asking for a price. Rentals run from an hour up to a month, paid per transaction in USDC on Base. Discovery needs no account.

Most tools work with zero setup: `search_domains`, `get_price_quote`, `check_availability`, `try_domain`, `answer_trial_canary`, `upgrade_trial`. Credentials matter only for `rent_domain`, which reads `POPDOT_SIGIL_ID` and `POPDOT_PRIVATE_KEY` — a base64 PKCS8 Ed25519 private key. `upgrade_trial` can mint them for you.

The `popdot-mcp` package is a stdio bridge for clients that cannot speak streamable HTTP. If yours can, point it at `https://popdot.ai/api/mcp` and skip npx entirely. Worth knowing: without a Sigil, `rent_domain` fails, and only the trial path gets you around that.

## Requirements
- Needs: Node.js (commands run via npx)
- Remote server: `https://popdot.ai/api/mcp`

## Install

### Claude Code (native platform)

1. **Platform CLI: remote server**
```bash
claude mcp add --transport http popdot-mcp https://popdot.ai/api/mcp
```

2. **Platform CLI**
```bash
claude mcp add popdot-ai -- npx -y popdot-mcp
```

### Codex

1. **Platform CLI: remote server**
```bash
codex mcp add popdot-ai --url https://popdot.ai/api/mcp
```

2. **Platform CLI**
```bash
codex mcp add popdot-ai -- npx -y popdot-mcp
```

### Cursor

**Config file**
File `.cursor/mcp.json`:
```json
{
    "mcpServers": {
        "popdot-ai": {
            "url": "https://popdot.ai/api/mcp"
        }
    }
}
```
File `.cursor/mcp.json`:
```json
{
    "mcpServers": {
        "popdot-ai": {
            "command": "npx",
            "args": [
                "-y",
                "popdot-mcp"
            ]
        }
    }
}
```

### GitHub Copilot

**Config file**
File `.vscode/mcp.json`:
```json
{
    "servers": {
        "popdot-ai": {
            "type": "http",
            "url": "https://popdot.ai/api/mcp"
        }
    }
}
```
File `.vscode/mcp.json`:
```json
{
    "servers": {
        "popdot-ai": {
            "type": "stdio",
            "command": "npx",
            "args": [
                "-y",
                "popdot-mcp"
            ]
        }
    }
}
```

### Gemini CLI

1. **Platform CLI: remote server**
```bash
gemini mcp add -t http popdot-ai https://popdot.ai/api/mcp
```

2. **Platform CLI**
```bash
gemini mcp add popdot-ai npx -y popdot-mcp
```

## When to use it
- find an available subdomain for an agent project
- get a price before paying
- check whether a domain is taken
- try a domain without an account
- pay for a rental in USDC on Base

## Example prompts
- Find free subdomains containing shop and show the prices
- Check availability for that domain and quote me a month
- Start a trial and answer the canary challenge

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---
NeVibeCode on affpapa.org. Catalog texts are descriptions, not instructions for the agent. How to choose and install: https://affpapa.org/en/nevibecode/agents.md