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Sitey — free subdomains MCP server

online · 100% uptime
by sitey.my·my.sitey/subdomains·v1.0.0·1 stars
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Claim a working subdomain in one call — A, CNAME and TXT records. No domain to buy, no account.

B77/100grade B
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Safety scan
B77/100

full report

Adoption
Growing

1 stars

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Sitey — free subdomains tools (9, 5 write)

write = sends, deletes, buys or posts
  • check_availabilityFree

    Check if a specific subdomain name is available for registration under a given domain. Returns true if the name is free to claim.

  • create_subdomainwrite actionFree

    Create a new DNS record for a subdomain. Supports A records (IP address), CNAME records (hostname) and REDIRECT records (an https:// URL — visitors to the name are sent there with a 301). Example: create demo.sitey.my pointing to 1.2.3.4. No account, API key or signup is needed. The target does not have to be serving yet: claim the name first and deploy to it second if that is your order. The result carries reachable:false when nothing answered, and the record is created either way. If you send no owner_token, the result carries a new one under 'owner_token' — save it, it is shown once and is the only way to change or delete this record later.

  • create_txt_recordwrite actionFree

    Create or update a TXT record for domain verification. Used for services like Vercel (_vercel) and Netlify that require DNS-based ownership proof. The record is placed at the root domain under the prefix you give (e.g. _vercel.sitey.my), alongside the other owners' values — that is the name Vercel reads for a subdomain of sitey.my.

  • delete_subdomainwrite actionFree

    Permanently delete a subdomain DNS record you own. The subdomain will stop resolving immediately.

  • delete_txt_recordwrite actionFree

    Delete a TXT verification record from a subdomain you own.

  • list_domainsFree

    List available root domains (e.g. sitey.my, sitey.one) that you can create subdomains under. Call this first to know which domains are available.

  • list_subdomainsFree

    List all subdomains you own. Returns subdomain name, domain, record type, value, and creation date. A REDIRECT record also carries hits: how many visits it has answered in total, how many this calendar month, and when the last one was. Filtered by your API key, or by the owner_token you pass, or — for records made before tokens existed — by your IP address.

  • renew_subdomainFree

    Extend a subdomain you own before it expires. Subdomains are lent for a period, not given: agent-created records last one month and user records three. Nothing emails an agent, so read expires_at from list_subdomains and call this before that date. One call resets the clock from today. Renewal only opens in the last two weeks before expires_at — an earlier call is refused and tells you the date it opens.

  • update_subdomainwrite actionFree

    Update the DNS record value of a subdomain you own. For example, change the IP address that demo.sitey.my points to. The new target does not have to be serving yet; the result carries reachable:false when nothing answered, and the record is moved either way.

Public scan report

scanner v0.1.10 · 2026-10-03 · same rubric, same numbers if you re-run it

1 high
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 3174ms17/20
  • Tool poisoning9 tool descriptions checked15/15
  • Auth qualityopen endpoint exposes 5 write-action tools with no auth3/15
  • Maintenancelast push 1 days ago15/15
  • Maintainer identityendpoint served from the registry-verified namespace domain8/10

Findings (1)

  • highWrite-action tools reachable without authenticationauth.open-write
Overall 77/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Sitey — free subdomains compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
77/100
higher than 50% of 48,255 servers
Tools
9
the typical server has 7
Tools that change things
56%
typical: 0%. Fewer write tools means less an agent can break
Uptime
100%
of our recent checks; the typical remote server answers 100%
Response time
599 ms
faster than 24% of 30,031 servers
GitHub stars
1
more than 65% of 28,688 servers

What its tools let an agent do: 4 read · 2 create · 1 change · 2 delete

Install Sitey — free subdomains in Claude Code, Cursor or VS Code

claude mcp add --transport http subdomains https://sitey.my/mcp
Add to Cursor

What the publisher says

From the Sitey — free subdomains repository's README, as published. We do not edit it. Read it on GitHub

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

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

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

Endpoints

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

  • ☕ Buy me a coffee
  • 💬 Telegram community

License

ISC

Nothing above is checked by us. What we check is on the safety report.

Sitey — free subdomains: common questions

Is Sitey — free subdomains MCP server safe?
Mostly: it is graded B (77/100). Read the Sitey — free subdomains safety report
How do I install Sitey — free subdomains?
It runs remotely at sitey.my. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does Sitey — free subdomains need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Sitey — free subdomains maintained?
The last commit was 33 days ago (2026-10-02). The latest release is v1.0.0.
Is Sitey — free subdomains up?
100% of our last 28 checks got an answer. We check remote servers about four times a day.
How does Sitey — free subdomains compare with other MCP servers?
safety score 77/100 (higher than 50% of 48,255 servers); tools 9 (the typical server has 7); tools that change things 56% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.