# three.ws Naming

Resolves Solana .sol domains, looks up wallet owners, and checks whether threews.sol handles are available for your assistant.

- MCP server · `type=mcp` · Claude Code, Codex, Cursor, GitHub Copilot, Windsurf (Devin Desktop), Cline, Zed, Gemini CLI · ★ 249
- Author: nirholas
- License: Apache-2.0 · policy=link-only · description only; the file stays with the author
- Source: https://github.com/nirholas/three.ws/tree/HEAD/packages/naming-mcp
- Updated: 2026-10-24
- HTML: https://affpapa.org/en/nevibecode/mcp/threews-naming

## What it does

This stdio MCP server exposes public naming records from the Solana network to your assistant. It provides three tools: `sns_resolve` maps a `.sol` domain to a base58 public key, `sns_reverse` finds the primary name tied to a wallet, and `threews_availability` verifies whether an agent subdomain is free.

Every check hits public endpoints on mainnet without private keys or gas fees. The server only performs read operations. Because of this, claiming a chosen handle is not supported here; you must mint subdomains separately through your three.ws account.

Running the package requires Node.js version 20 or higher. The default request timeout is 20000 milliseconds via `THREE_WS_TIMEOUT_MS`.

## Requirements
- Needs: Node.js (commands run via npx)
- Environment variables: `THREE_WS_BASE`, `THREE_WS_TIMEOUT_MS` — keys and tokens: ask the human for the values, never commit them or put them in shared files.

## Install

### Claude Code (native platform)

**Platform CLI**
```bash
claude mcp add --env THREE_WS_BASE=<THREE_WS_BASE> --env THREE_WS_TIMEOUT_MS=<THREE_WS_TIMEOUT_MS> --transport stdio naming-mcp -- npx -y @three-ws/naming-mcp
```
Replace <…> with your own values

### Codex

**Platform CLI**
```bash
codex mcp add naming-mcp --env THREE_WS_BASE=<THREE_WS_BASE> --env THREE_WS_TIMEOUT_MS=<THREE_WS_TIMEOUT_MS> -- npx -y @three-ws/naming-mcp
```
Replace <…> with your own values

### Cursor

**Config file**
File `.cursor/mcp.json`:
```json
{
    "mcpServers": {
        "naming-mcp": {
            "command": "npx",
            "args": [
                "-y",
                "@three-ws/naming-mcp"
            ],
            "env": {
                "THREE_WS_BASE": "<THREE_WS_BASE>",
                "THREE_WS_TIMEOUT_MS": "<THREE_WS_TIMEOUT_MS>"
            }
        }
    }
}
```
Replace <…> with your own values

### GitHub Copilot

**Config file**
File `.vscode/mcp.json`:
```json
{
    "servers": {
        "naming-mcp": {
            "type": "stdio",
            "command": "npx",
            "args": [
                "-y",
                "@three-ws/naming-mcp"
            ],
            "env": {
                "THREE_WS_BASE": "<THREE_WS_BASE>",
                "THREE_WS_TIMEOUT_MS": "<THREE_WS_TIMEOUT_MS>"
            }
        }
    }
}
```
Replace <…> with your own values

### Gemini CLI

**Platform CLI**
```bash
gemini mcp add -e THREE_WS_BASE=<THREE_WS_BASE> -e THREE_WS_TIMEOUT_MS=<THREE_WS_TIMEOUT_MS> naming-mcp npx -y @three-ws/naming-mcp
```
Replace <…> with your own values

## When to use it
- resolve a `.sol` domain to its Solana wallet address
- find the primary name for a base58 public key
- check handle availability for a `threews.sol` subdomain

## Example prompts
- Check if the handle `agent` is available on `threews.sol`.
- Resolve the owner wallet address for `bonfida.sol`.
- Find the primary `.sol` domain registered to this Solana wallet.

## Similar
- [REA](https://affpapa.org/en/nevibecode/mcp/rea.md) — MCP server · ★ 386989
- [GitHub](https://affpapa.org/en/nevibecode/mcp/github.md) — MCP server · ★ 33918
- [Netdata](https://affpapa.org/en/nevibecode/mcp/netdata.md) — MCP server · ★ 81115
- [browser-use](https://affpapa.org/en/nevibecode/mcp/browser-use.md) — MCP server · ★ 119160
- [Codebase Memory](https://affpapa.org/en/nevibecode/mcp/codebase-memory.md) — MCP server · ★ 47392
- [mcp-server](https://affpapa.org/en/nevibecode/mcp/mcp-server.md) — MCP server · ★ 43872

From the same set: [nirholas/three.ws](https://affpapa.org/en/nevibecode/by/nirholas/three.ws.md) — 29 cards

---
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