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Sitey — free subdomains

Official registry Other

Claim a working subdomain in one call — A, CNAME and TXT records. No domain to buy, no account.

Source code Website Documentation

What can you do with Sitey — free subdomains?

  • Instant DNS — A, CNAME, and TXT records, live in seconds
  • Google sign-in — No passwords to manage
  • REST API — Programmatic access via /api/v1/
  • Renewals — Subdomains are lent for a period and kept with one click
  • Free — No cost, no catch

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http sitey-free-subdomains 'https://sitey.my/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "sitey-free-subdomains": {
            "type": "http",
            "url": "https://sitey.my/mcp"
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. sitey.my
  2. Features
  3. Quick Start
  4. REST API
  5. Tech Stack
  6. How It Works
  7. Use Cases
  8. Support
  9. License

sitey.my

Free subdomain service for developers. Get a subdomain in seconds — no credit card, no hassle.

Features

  • Instant DNS — A, CNAME, and TXT records, live in seconds
  • Google sign-in — No passwords to manage
  • REST API — Programmatic access via /api/v1/
  • Renewals — Subdomains are lent for a period and kept with one click
  • Free — No cost, no catch
How long a subdomain lasts
OwnerPeriodReminders
Signed-in user3 months14 days, 3 days and the day it expires
API key / agent1 monthnone — expires_at comes back with every read

Renewing resets the clock from today. A subdomain that stops loading is not removed: we write to tell you it has gone dark, and that is all.

Quick Start

  1. Visit sitey.my
  2. Sign in with Google
  3. Type a subdomain + IP address → done

REST API

Programmatic access for developers and AI agents.

Base URL: https://sitey.my/api/v1

sitey.one and the www. hosts redirect here (308 for /api/*, so POST bodies survive).

Authentication
ModeAuthLimit
AnonymousNone (IP-based)3 subdomains
API keyAuthorization: Bearer styo_xxxUnlimited

Get an API key: sign in at sitey.my → Dashboard → API Keys.

Endpoints
MethodPathDescription
GET/domainsList available root domains
GET/check/:subdomain/:domainCheck availability
POST/subdomainsCreate A or CNAME record
GET/subdomainsList your subdomains
PATCH/subdomains/:sub/:domainUpdate record value
DELETE/subdomains/:sub/:domainDelete subdomain
POST/subdomains/:sub/:domain/renewExtend before expires_at
POST/subdomains/:sub/:domain/txtCreate/update TXT record
DELETE/subdomains/:sub/:domain/txt/:prefixDelete TXT record
Example
# Check availability
curl https://sitey.my/api/v1/check/demo/sitey.my

# Create subdomain
curl -X POST https://sitey.my/api/v1/subdomains \
  -H "Content-Type: application/json" \
  -d '{"subdomain":"demo","domain":"sitey.my","type":"A","value":"1.2.3.4"}'
For AI Agents (MCP)

AI agents can use free-domain-mcp — an MCP server that wraps this REST API.

claude mcp add --transport http sitey https://your-mcp-server/mcp

Tech Stack

  • Runtime: Node.js + Fastify
  • DNS: Self-hosted BIND9 (authoritative nameserver)
  • Database: MySQL
  • Auth: Google OAuth2 + JWT

How It Works

  1. User (or API call) requests a subdomain
  2. Server validates input + checks availability
  3. A/CNAME/TXT record is appended to the BIND9 zone file
  4. named-checkzone validates → systemctl reload named applies
  5. DNS is live within seconds

We run our own authoritative nameservers (ns1.sitey.one, ns2.sitey.one) — no third-party DNS provider.

Use Cases

  • Deploy a side project to myapp.sitey.my
  • Give hackathon demos a real URL
  • Automate domain setup via REST API or MCP
  • Share staging environments with teammates

Support

License

ISC

Frequently asked questions

What is Sitey — free subdomains?

Claim a working subdomain in one call — A, CNAME and TXT records. No domain to buy, no account.

How do I install Sitey — free subdomains?

It runs as a remote server. In Claude Code: claude mcp add --transport http sitey-free-subdomains 'https://sitey.my/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Sitey — free subdomains need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is Sitey — free subdomains open source?

Yes. Its code is on GitHub under the ISC license.

Who maintains Sitey — free subdomains?

It is published by jaejeonglee. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.