# Cheapest Domains

> Compare domain registration and renewal prices across registrars and check exact-name availability.

- name: domains.cheapest/cheapest-domains
- version: 1.11.0
- connection class: R0 (autonomous)
- trust: 96/100
- quality: 95/100 (strong)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/domains.cheapest%2Fcheapest-domains
- tools: https://api.protogrid.dev/v1/servers/domains.cheapest%2Fcheapest-domains/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "cheapest-domains": {
      "type": "http",
      "url": "https://www.cheapest.domains/mcp"
    }
  }
}
```


## Trust

- hygiene: 100
- liveness: 100
- freshness: 100
- provenance: 85
- drivers: +repository +dns-namespace +website +reachable +uptime-100% +updated-18d-ago
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 95/100 (strong)

### protocol: 100 (weight 25)

- pass `protocol.modern`: supports 2026-07-28 (server/discover)
- pass `protocol.stateless`: answers without a session
- pass `protocol.transport`: streamable HTTP
- pass `protocol.list_ttl`: tool list is cacheable (ttlMs 3600000)

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 100 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 12 of 12 tools declare readOnlyHint or destructiveHint
- pass `tools.directory_hints`: every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
- pass `tools.token_cost`: about 4,280 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 75 (weight 15)

- warn `stability.changes`: 15 tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 12, about 4,280 tokens to load them all
- tool set hash: 2194516f320edf89d2cc42b1eca6a881
- tools last changed: 2026-10-08T14:26:12.646Z
- badge: [![protogrid quality](https://protogrid.dev/badge/domains.cheapest/cheapest-domains.svg)](https://protogrid.dev/servers/domains.cheapest/cheapest-domains)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-08 `get_price_history` added
  - Return how each covered registrar's renewal or registration price for one extension changed over time: price periods with the date each price was first seen, when the previous price was last seen, and whether it came from our scheduled refreshes or the registrar's own price page archived by the Internet Archive. A first record may be older than its date. Availability is not checked.
- 2026-10-08 `check_availability_batch` changed (description)
  - before: Check one name across up to 20 extensions, reusing shared five-minute evidence. Enrichment stops once availability is known, so premium can remain null. Partial failures keep the answers received plus retry guidance, without automatic retries. cachedOnly makes no provider calls. No selected-registrar fallback, fresh mode, prices or purchases.
  - after: Check one name across up to 20 extensions, reusing shared evidence. Enrichment stops once availability is known, so premium can remain null. Partial failures keep the answers received plus retry guidance, without automatic retries. cachedOnly makes no provider calls. No selected-registrar fallback, fresh mode, prices or purchases.
- 2026-10-08 `check_availability` changed (description, inputSchema)
  - before: Check one exact domain. Cloudflare answers first; configured fallback providers, then an optional selected registrar, run only for missing facts; a taken name ends the chain. Returns separate availability and nullable premium facts with provider attempts and check times; null premium is unconfirmed, not standard tier. Evidence expires after five minutes. No price lookup, purchase or reservation.
  - after: Check one exact domain. Cloudflare answers first; configured fallbacks, then an optional selected registrar, run only for missing facts; a taken name ends the chain. Returns separate availability and nullable premium facts, provider attempts and check times; null premium is unconfirmed, not standard tier. Recheck after expiresAt (5 min; up to 30 days if taken). No prices, purchase or reservation.
- 2026-10-05 `search_prices` changed (description)
  - before: Compare standard prices, including explicitly labeled Cloudflare samples. Find affordable domain extensions and registrar offers, sorted by annual renewal by default. Saved offers remain listed when outdated, with stale flags and source timestamps. Returns prices, citation links, timestamps, coverage, and pagination. Does not check exact-name availability.
  - after: Compare standard prices, including explicitly labeled Cloudflare samples. Find affordable domain extensions and registrar offers, sorted by annual renewal by default. Saved offers stay listed after a failed refresh, with stale flags and source timestamps for stating their age. Returns prices, citation links, timestamps, coverage, and pagination. Does not check exact-name availability.
- 2026-10-02 `compare_domain_names` added
  - After checking exact names with the availability tools, compare up to 10 candidates using saved renewal-first prices and fresh cached evidence. No new availability requests; cache misses are Not confirmed. Returns standard reference offers, premium facts, dates and links. The assistant explains project fit. Split larger lists into bounded groups. Does not generate names.
- 2026-10-02 `open_name_finder` added
  - Open the naming form in a compatible host, or return its text workflow. Collect seed names, an optional project brief, count and annual renewal budget; the current assistant generates ideas and checks them with the research tools. Opening performs no generation or registrar checks. Does not connect subscriptions or require a model API key.
- 2026-09-30 `check_availability_batch` changed (annotations)
- 2026-09-30 `get_domain_popularity` changed (annotations)
- 2026-09-30 `check_availability` changed (annotations)
- 2026-09-30 `get_naming_guidance` changed (annotations)

Full history: https://api.protogrid.dev/v1/servers/domains.cheapest%2Fcheapest-domains/changes

## Remotes

- https://www.cheapest.domains/mcp (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

_none_

## Tools (12)

- `check_availability`: Check one exact domain. Cloudflare answers first; configured fallbacks, then an optional selected registrar, run only for missing facts; a taken name ends the chain. Returns separate availability and nullable premium facts, provider attempts and check times; null premium is unconfirmed, not standard tier. Recheck after expiresAt (5 min; up to 30 days if taken). No prices, purchase or reservation.
- `check_availability_batch`: Check one name across up to 20 extensions, reusing shared evidence. Enrichment stops once availability is known, so premium can remain null. Partial failures keep the answers received plus retry guidance, without automatic retries. cachedOnly makes no provider calls. No selected-registrar fallback, fresh mode, prices or purchases.
- `compare_domain_names`: After checking exact names with the availability tools, compare up to 10 candidates using saved renewal-first prices and fresh cached evidence. No new availability requests; cache misses are Not confirmed. Returns standard reference offers, premium facts, dates and links. The assistant explains project fit. Split larger lists into bounded groups. Does not generate names.
- `estimate_cost`: Estimate new registration plus subsequent renewals for one TLD at a registrar. Returns null for unknown multi-year term totals. Not a transfer or existing-domain renewal quote.
- `get_domain_popularity`: Look up one exact domain in Cloudflare Radar’s global DNS popularity ranking. Returns an exact top-100 rank or a broader popularity group, categories, locations, data dates, and CC BY-NC 4.0 attribution. Not Google SEO difficulty, name competition, or availability. Missing data does not indicate zero competition.
- `get_naming_guidance`: Return domain naming criteria, renewal-price comparison guidance and availability-status definitions. This static reference does not generate names or check availability.
- `get_price_history`: Return how each covered registrar's renewal or registration price for one extension changed over time: price periods with the date each price was first seen, when the previous price was last seen, and whether it came from our scheduled refreshes or the registrar's own price page archived by the Internet Archive. A first record may be older than its date. Availability is not checked.
- `get_registrar_link`: Construct a verified registrar search destination for a proposed name and extension. Does not navigate, check availability, or purchase. NameBright and AWS Route 53 use an explicit copy/paste fallback.
- `get_registrars`: Get connected registrar coverage, timestamps, fresh counts, failures, and registrars not compared.
- `get_tld_prices`: Compare all covered registrars for one extension. Returns source failures, quote timestamps and minimum terms; availability is not checked.
- `open_name_finder`: Open the naming form in a compatible host, or return its text workflow. Collect seed names, an optional project brief, count and annual renewal budget; the current assistant generates ideas and checks them with the research tools. Opening performs no generation or registrar checks. Does not connect subscriptions or require a model API key.
- `search_prices`: Compare standard prices, including explicitly labeled Cloudflare samples. Find affordable domain extensions and registrar offers, sorted by annual renewal by default. Saved offers stay listed after a failed refresh, with stale flags and source timestamps for stating their age. Returns prices, citation links, timestamps, coverage, and pagination. Does not check exact-name availability.