ChatGPT Plugin

Domainee

Custom domains for your SaaS

Brand: Domainee

Category: Developer Tools
Primary Subcategory: Domain Registration

Integration details

Description

Domainee is a custom domains API for SaaS with a native MCP server. 50 domains and 100 GB are free. Connect a customer's hostname and get back the CNAME target, force DNS and SSL probes, debug "my domain isn't working" tickets, and manage webhook endpoints, all on the same key, rate limits, and workspace as the REST API. Hosted and stateless: nothing to deploy. Connect your Domainee account and 11 workspace tools cover domains, webhook endpoints, and DNS verification. 16 diagnostic tools need no account at all: SSL checks, DNS and TXT record lookups, WHOIS, CNAME resolution, HTTP headers, DNS propagation, redirects, SPF/DKIM/DMARC, domain age and availability, subdomain finding, reverse IP, and website status.

Integration type: Plugin
Verification status: Not applicable
Platform: ChatGPT
Category: Developer Tools
Primary Subcategory: Domain Registration
Secondary Subcategories: None listed
Brand: Domainee
Access: Account required
First tracked: 2026-10-15
Tool count: 30
Geography: US

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Primary Subcategory

Competing in ChatGPT Domain Registration

View Category

Listed in alphabetical order

Primary Subcategory

Cheapest DomainsComing soonGet notified

doDomainComing soonGet notified

DomaineeComing soonGet notified

DomainWispComing soonGet notified

GoDaddyComing soonGet notified

Tools

30 tools agents can invoke

Free public API. Resolve a hostname's CNAME chain. Useful for debugging custom-domain CNAME setups.
tools_cname_lookup
For each record, returns match: true if at least one DNS-returned value equals match_against. Use this to confirm the customer published the right CNAME without rejecting them for having other records alongside it. Up to 50 records per call.
dns_check_records_exist
Stricter version: returns match: true only if EVERY value DNS returned equals match_against. Use when the customer must point ONLY at us (no extra A records alongside the CNAME).
dns_check_records_match_exactly
Register a new customer hostname for proxy or redirect through the Domainee edge. Returns the Domain object plus any preflight warnings (CAA, unreachable origin, etc.). Returns 402 billing_required if the workspace doesn't have a payment method on file. Works for apex/root domains as well as subdomains: read dnsRecordOptions on the response and give the customer the 'a' set if their DNS provider cannot put a CNAME at the apex.
create_domain
Register a HTTPS URL that Domainee POSTs domain events to. The signing secret is returned once — store it. Pass an empty `events` array to subscribe to all event types.
create_webhook_endpoint
Free public API. Look up the DKIM record at <selector>._domainkey.<domain>, parse the public key, flag issues.
tools_dkim_record_checker
Free public API. Look up the DMARC record at _dmarc.<domain>, parse policy/alignment/reporting tags, flag missing or too-permissive settings.
tools_dmarc_record_checker
Free public API. Query the same hostname across ~10 public DNS resolvers worldwide and report which ones return the same answer. Useful right after a DNS change.
tools_dns_propagation_checker
Free public API. Identify which DNS provider actually serves a domain, fingerprinted from its public NS records. Returns the record name written the way that provider's form expects it (providers disagree about whether the apex is '@', blank, or the full domain, and getting it wrong is the most common way a correct record lands in the wrong place), whether the provider can point a zone apex at a hostname, where its record editor lives, and the provider-specific settings that silently break custom domain setups. Use this before telling someone what DNS record to add. No Bearer required.
tools_dns_provider_lookup
Free public API. Look up DNS records (A, AAAA, CNAME, MX, TXT, NS, SOA) for any domain.
tools_dns_record_lookup
Stop routing a hostname. Traffic at the edge stops returning the origin within ~60s. The customer's CNAME stays harmless until they remove it.
delete_domain
Stop sending events to a webhook endpoint. Any in-flight retries are dropped.
delete_webhook_endpoint
Free public API. Returns a domain's registration date, age in days + years, last-updated date, and expiration.
tools_domain_age_checker
Free public API. Check availability of a name across one or more TLDs. Pass a `name` (no TLD) and an optional `tlds` array.
tools_domain_availability_checker
Free public API. Check whether a domain's DNS provider implements the Domain Connect protocol, read live from the _domainconnect TXT record and the provider's settings endpoint. Reports the provider and whether it offers the synchronous flow (a signed redirect with no token exchanged, the one that works in practice) or only the asynchronous OAuth flow. Note that provider support is necessary but not sufficient for one-click setup: the service being connected must also have a template the provider has synced and enabled, which many providers do only after a per-service onboarding. No Bearer required.
tools_domain_connect_checker
Get DNS setup steps written for the provider actually serving the customer's domain, instead of a generic 'add a CNAME'. Fingerprints the DNS host from its public NS records, then returns the exact record type and name to use (providers disagree about whether the apex is '@', blank, or the full domain), where the record editor lives in that provider's UI, and the provider-specific gotchas that silently break a connection: Cloudflare's orange-cloud proxy, GoDaddy's parked A record, Route 53 having no third-party ALIAS. Also returns domainConnect: when supported is true, domainConnect.applyUrl is a one-click link the customer opens to approve the records at their own DNS provider. One-click is live today for domains whose DNS is on Cloudflare (and Glauca Digital); elsewhere supported is false with a reason, so use the steps. Always relay the steps either way. After the customer approves the one-click screen or publishes the records, call check_domain so the domain verifies right away. Use this whenever a customer asks how to point their domain, or when a domain is stuck pending.
get_connect_instructions
Fetch one domain by id. Returns the full Domain object: hostname, originUrl, status, monitorStatus, dnsRecords, dnsRecordOptions, etc. dnsRecords is always the single CNAME. dnsRecordOptions lists every supported way to point the hostname at us, RECOMMENDED FIRST — take dnsRecordOptions[0] and you get the right one. For a subdomain that is the 'cname' set. For an apex/root domain it is the 'a' set of anycast A records: a root domain cannot hold a CNAME, and the ALIAS/ANAME/flattening substitutes each pin the name to a single region with no failover, while the anycast records keep every region. Hand the customer ALL records in the chosen set — adding only one A record works but leaves them without redundancy.
get_domain
Free public API. Fetch a URL and return its response headers + security grade based on common security headers.
tools_http_header_checker
List custom domains in the workspace tied to the API key. Cursor-paginated; pass `cursor` from a previous response to fetch the next page. Optional filters: `status` (pending | verified | failed | expired) and `hostname` (exact-match lookup — returns at most one entry).
list_domains
List all webhook endpoints registered for the workspace. Signing secrets are NOT included — they're only revealed at create time.
list_webhook_endpoints
Force an immediate DNS / SSL probe for a domain instead of waiting for the next scheduled one. Domains are re-probed every 5 minutes, so this saves up to that long. Useful right after a customer publishes their CNAME or apex A records — flips status from pending → verified once visible.
check_domain
Free public API. Follow a URL's redirect chain and return every hop with status code, response time, final destination.
tools_redirect_checker
Free public API. Reverse-DNS (PTR) lookup for an IP address. Returns one or more hostnames if configured.
tools_reverse_ip_lookup
Free public API. Look up and validate the SPF record for a domain. Counts void/total DNS lookups, flags syntax issues, validates against RFC 7208's 10-lookup limit.
tools_spf_record_checker
Free public API. Check the TLS certificate of any public hostname. Returns issuer, subject, validity dates, days until expiry, full chain, cipher, protocol, and SAN list. No Bearer required.
tools_ssl_check
Free public API. Enumerate subdomains for a target domain via Certificate Transparency logs + DNS resolution.
tools_subdomain_finder
Free public API. Fetch all TXT records on a domain, classifying each as SPF, DKIM, DMARC, BIMI, verification token, or general.
tools_txt_record_lookup
Update a domain. Hostname is immutable — delete and recreate to change it. Editable fields: originUrl, mode, keepHost, redirectWww, redirectStatus, metadata.
update_domain
Free public API. WHOIS / RDAP lookup for a domain — registrar, status, created/updated/expires dates, nameservers.
tools_whois_lookup
Free public API. Check if a website is up or down. Returns HTTP status, response time, final URL after redirects, basic SSL info.
tools_website_status_checker

FAQs

Domainee ChatGPT Plugin FAQ

How the directory, categories and Discoverability Score work.

Read the methodology

How do I improve Domainee's ChatGPT Plugin discoverability?

The levers are the listing surface agents actually read: names, descriptions, keywords, tool metadata, and registry health. Which lever matters depends on where discovery breaks, which is what continuous measurement shows.

What are Domainee alternatives on ChatGPT?

As of 2026-10-24, Domainee competes with Cheapest Domains, doDomain, DomainWisp, GoDaddy, Instant AI, iwantmyname Domain Search, Just Domain, Namecheap and 3 more in ChatGPT Domain Registration, ranked by public Discoverability Score.

Where is this profile measured?

This profile uses the geography attached to the latest public registry snapshot: US. Locale tags are intentionally omitted.