StableDomains MCP server

• Registry namenet.stabledomains/registrarverified in the MCP registry

The registry name sits under stabledomains.net. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

• Stateanswerschecked 2026-10-29
• Tools37
• Server calls itselfstabledomains
• Server version2.4.0
• Protocol version2025-06-18

On 2026-10-29 the server answered initialize and tools/list without a sign-in. First answer in 130 ms.

• Its tools do every use case we checked: Search and price domain names across common TLDs; Register a domain by paying in stablecoins; Manage DNS, forwarding and renewals from a dashboard.
• Checked on 6 of the 7 days it takes to judge reliability.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

• INITE MCP scoreafter a weeka score needs 7 daily checks: 6 so far
• What an agent can do with it3 of 3 use cases
• Answeredmeasuring6 of the 7 daily checks it takes to print a share
• Median first answer308 ms
• Space in an agent's context≈ 4,829 tokensthe definitions of all its tools (37), which an agent carries on every turn
• Tool definitionsB · 86 of 100
• Typed results0 of 37 toolsdeclared outputSchema: results come typed, read once

• Parameters without a description: in 30 of 37

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

• search_domains

  Check availability and USD price for a name across TLDs. Each result has premium (boolean; premium = registry price + 12%) and renewal_price (USD/yr). If the name is taken, suggestions[] lists close AVAILABLE alternatives (live-checked…

• search_aftermarket

  For a taken name: affiliate links to Atom.com, an OUTSIDE aftermarket (not StableDomains), to find premium alternatives for the keyword. Exact-name listing on Atom is not verified (no public API). Atom handles payment/transfer.

• agent_signup

  Instant signup: returns an API key immediately (no form, no email). Guest tier (30 req/min) until claimed by email or wallet. Rate limited per IP (3/hour). Store the key; it is shown once.

• quote_domain

  Live price quote for one domain. Returns premium (boolean) and renewal_price (USD/yr). Premium orders are refused if they exceed what we can currently fund.

• create_order

  Create a registration order (a price-locked quote). Returns quote{price_usd, locked_until}, payment requirements (exact amount, address, x402 accepts) and checkout_url: a prefilled /order/{id} page a human can pay from. Policy: check…

• buy_with_balance

  Register a domain and pay from prepaid balance in one call.

• check_order

  Get order status and next actions.

• pay_order

  Submit payment: tx_hash (EVM hash or Solana signature) of your transfer, or x_payment (base64 x402 EIP-3009 payload, gasless).

• get_balance

  Prepaid balance and ledger.

• topup_balance

  Create a top-up order (USD 5–5000); pay it like any order.

• find_dropping_domains

  Find expiring, pending-delete and just-dropped domains ranked by a verified quality score (0-100) built from sampled Wayback snapshots (real site vs parked/for-sale), Common Crawl presence, dictionary/brandability and spam heuristics…

• drop_radar

  Domain Drop Radar: expiring, pending-delete and just-dropped domains filtered by TLD(s), length, keywords, value, quality and drop date, with presets (short-brandable, ai-names, dictionary-com, real-history, cheap-good…

• radar_alert

  Save a Drop Radar search and get a signed webhook (event radar.match, header X-StableDomains-Signature = sha256 HMAC of the body with the returned secret) and/or email (double opt-in) when new names match or a pending-delete name drops…

• suggest_domains

  Free. Pass domain (e.g. a taken name like agent.com) to get close AVAILABLE alternatives (other extensions, get/try/hq/app variants), live-checked and ranked by price. Or pass idea to generate brandable names for a product idea. Returns…

• estimate_domain_value

  Heuristic USD value estimate for any domain (length, TLD, dictionary words, brandability, Wayback age, backlinks) with factor breakdown and availability.

• whois_lookup

  RDAP (modern WHOIS) lookup for any domain: registrar, created/expires dates, status codes, nameservers, DNSSEC.

• dns_email_check

  DNS + email security audit via DNS-over-HTTPS: A/AAAA/MX/NS/CAA, SPF, DKIM (common or given selectors), DMARC policy, grade A-F and concrete fixes.

• is_domain_dropping

  Is an expired domain about to become available? Returns lifecycle (grace, redemption, pending delete, available, registered), estimated drop date and backlink data if in our drop feed.

• watch_domain

  Get notified when an expiring domain changes status or drops (becomes registrable). Pass webhook_url (active immediately, POSTs JSON events domain.status_changed / domain.available with a ready order_api body) and/or email (double…

• set_url_forward

  FREE 301 URL forwarding for a domain you registered with us: forward the whole domain (subdomain '@', also covers www) or a subdomain to any https URL. Points DNS at our redirect service. preserve_path keeps /path?query.

• list_url_forwards

  URL forwards configured on a domain you own.

• apply_dns_template

  FREE one-call DNS setup for a domain you own. template: vercel | netlify (params.site) | github-pages (params.user) | google-workspace | microsoft-365 | zoho-mail (params.region: com|eu|in|com.au). Replaces only the conflicting web or…

• get_dns

  Nameservers and DNS records (A/AAAA/CNAME/MX/TXT) of a domain you own.

• set_dns

  Set DNS records and/or nameservers of a domain you own. records: [{type: A|AAAA|CNAME|MX|TXT, name: '@'|sub, value, ttl?, priority? (MX)}]. mode 'replace' (default) replaces the FULL record set; mode 'merge' adds/updates the given…

• renew_domain

  Renew a domain you own. Returns USDC payment requirements (402), or pay_with=balance to renew instantly from prepaid balance.

• set_notification_webhook

  Account webhook for lifecycle events: domain.expiring (30/7/1 days before), domain.renewed, domain.transfer_completed. null to remove.

• transfer_domain

  Transfer a domain in from another registrar using its auth/EPP code; paid in USDC (adds 1 year). Unlock it at the current registrar first. Completes in ~5-7 days.

• create_cart

  Register up to 20 available domains with ONE payment (exact total in the 402). Returns a price-locked quote, checkout_url for a human to pay, and is idempotent via idempotency_key. After payment each is registered; any failure is refunded…

• get_referral_link

  Your referral code and shareable link (?ref=<code>, 30-day attribution). Referrers earn 10% of our margin on paid orders by people/agents they refer; agents pass ref=<code> on create_order, create_cart or transfer_domain.

• get_referral_stats

  Referral dashboard: clicks, referred users, sales, earned / unpaid / pending / paid USD, recent sales and payouts. Payouts are USDC on Base, batched weekly (min $5, capped, admin-approved) to your payout address.

• set_payout_address

  Set the Base USDC address that receives your weekly referral payouts (null to clear).

• set_auto_renew

  Turn auto-renew on/off for a domain you own and/or fund its renewal balance (vault). deposit_usd moves USDC from your prepaid balance (topup_balance) into the domain's vault; withdraw_usd moves it back. The daily job renews 1 year when…

• get_renewal_balance

  Auto-renew vault for a domain: renewal balance, 1-year renewal price, whether it is covered, shortfall, days to expiry and ledger. Omit domain to list all your domains' renewal balances.

• search_agents

  Search the StableDomains.net agent directory (approved AI agents and MCP servers) by keyword or capability. Returns name, description, url, endpoint_url, mcp_url, capabilities, payment_methods and profile_url.

• get_agent

  Get one agent directory profile by slug.

• list_my_agent

  Agent profiles you submitted (any status: pending, approved, rejected) with review notes. Submit a new one with POST /api/v1/agents (auth required, moderated).

• list_domains

  Domains owned by the caller.