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premium-domains

Server Details

Search, appraise, trademark-check, and buy premium brandable domain names.

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Healthy
Last Tested
Transport
Streamable HTTP
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Tool DescriptionsA

Average 4.6/5 across 7 of 7 tools scored.

Server CoherenceA
Disambiguation5/5

Each tool has a uniquely defined purpose: appraisal, availability check, name generation, details, checkout, trademark screening, and marketplace search. No two tools overlap, and descriptions clearly distinguish them.

Naming Consistency5/5

All tool names follow a consistent verb_noun pattern using snake_case (e.g., appraise_domain, check_domain_availability). The verbs are descriptive and align with the tool's action.

Tool Count5/5

With 7 tools, the server covers the core domain workflow (valuation, search, availability, details, purchase, trademark check) without being bloated or sparse.

Completeness4/5

The server covers most key actions for domain discovery and purchase, but lacks a direct 'register_domain' tool (only a checkout link is provided). This is a minor gap that agents can work around.

Available Tools

7 tools
appraise_domainA
Read-only
Inspect

Estimate the market value of a domain and explain why. Use when a user asks what a domain is worth, how much to pay/offer, or to appraise a domain.

Returns two SEPARATE numbers — do not conflate them: • estimated_value — Atom's estimated market price in USD (an estimate, never a guaranteed or quoted price). • domain_score — a 0–10 rating of the NAME's quality/brandability/desirability (10 = strongest). This is a quality score, NOT a confidence level and NOT a probability. A low domain_score means a weaker/less desirable name, not that the estimate is uncertain.

Also returns domain_score_label (weak/moderate/strong), factors (positive/negative signals behind the estimate), and comparable_sales. When presenting: state the estimated value as a price, describe domain_score as a quality rating (e.g. '6/10 — moderate brandability'), and NEVER describe domain_score as 'confidence'. Read the score_meaning field in the response.

ParametersJSON Schema
NameRequiredDescriptionDefault
domainYesFull domain to appraise, including the extension, e.g. 'example.com'. Works for any domain, not just Atom listings.

Output Schema

ParametersJSON Schema
NameRequiredDescription
urlYes
domainYes
factorsNoSignals behind the estimate.
successYes
currencyNo
disclaimerNo
domain_scoreYes0–10 quality rating of the NAME (NOT a confidence level).
score_meaningNoExplains domain_score is a quality rating, not confidence.
estimated_valueYesAtom's estimated market value in USD (an estimate, not a quote).
comparable_salesNoRecent comparable sales (best-effort; .com only).
domain_score_maxNo
domain_score_labelNoHuman label for domain_score.
estimated_value_meaningNoHow to interpret estimated_value.
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations declare readOnlyHint=true, so no destructive behavior. The description adds crucial behavioral details beyond annotations: it clarifies that estimated_value is an estimate, not guaranteed; explains domain_score is a quality rating (0–10) and not confidence or probability; warns not to describe domain_score as confidence; and mentions return fields like factors and comparable_sales. No contradictions.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is relatively concise for the amount of information conveyed. It is well-structured: first sentence states purpose, then bullet-list-like explanations of the two numbers, then presentation guidance. However, it could be slightly more concise (e.g., combine sentences about domain_score). It front-loads the main purpose, which is good.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the presence of an output schema (context signal indicates 'Has output schema: true'), the description does not need to detail every return field, but it still mentions key fields: estimated_value, domain_score, domain_score_label, factors, comparable_sales, and score_meaning. It also explains how to present them. For a tool with one parameter and a clear output, the description is fully complete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema has one parameter 'domain' with a description that already says 'Full domain to appraise, including the extension.' The description adds extra context: 'Works for any domain, not just Atom listings.' This adds value beyond the schema. Schema coverage is 100%, so baseline is 3; the extra context raises it to 4.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose: 'Estimate the market value of a domain and explain why.' It uses a specific verb (estimate) and resource (domain market value), and explains the context of use (what a domain is worth, how much to pay/offer). It distinguishes from sibling tools by focusing on appraisal rather than availability or generation.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description explicitly states when to use the tool: 'Use when a user asks what a domain is worth, how much to pay/offer, or to appraise a domain.' It also provides guidance on how to interpret results (not conflating numbers, describing domain_score as quality). However, it does not explicitly mention when not to use it (e.g., for availability checks), though that is implicitly clear from sibling tool names.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

check_domain_availabilityA
Read-only
Inspect

Check whether ONE specific, fully-spelled domain is available, taken, or a premium listing. Use whenever a user names a specific domain (e.g. "is acme.com available?", "who owns x.io?", "can I get nova.ai?"). For open-ended "suggest names for my idea" requests use search_brandable_domains instead.

Returns: status ("available" = registrable now | "taken" = registered/unavailable | "premium" = for sale on Atom), registrable (bool), price + currency when applicable, estimated_value (rough appraisal, optional), and alternatives[] — when the domain is taken or premium, the closest available premium names from Atom (each with domain, price, url) so the user always has a buyable path. Ends with an Atom url.

ParametersJSON Schema
NameRequiredDescriptionDefault
domainYesThe domain to check, including extension, e.g. 'example.com'.

Output Schema

ParametersJSON Schema
NameRequiredDescription
urlYesAtom URL for this domain.
priceNoPrice in USD when applicable.
domainYes
statusYesavailable = registrable now; taken = registered/unavailable; premium = for sale on Atom.
successYes
currencyNo
registrableYesWhether the domain can be registered now.
alternativesNoClosest available Atom premium names when the domain is taken/premium.
estimated_valueNoRough appraisal in USD (optional).
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Discloses return fields (status, registrable, price, alternatives, etc.) and ends with Atom URL. readOnlyHint annotation aligns with read-only nature; no contradiction.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Well-structured with purpose, usage, returns front-loaded. Slightly verbose but each sentence adds value.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

With output schema present, description still thoroughly explains return values and behavior, making it fully complete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema covers parameter 'domain' with description; description repeats it's a fully-spelled domain but adds no extra meaning. Baseline 3 due to 100% schema coverage.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool checks availability/taken/premium for a specific domain, distinguishing it from search_brandable_domains for open-ended requests.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly says to use when user names a specific domain, and provides alternative tool for open-ended suggestions.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

generate_domain_namesA
Read-only
Inspect

Invent NEW brandable domain name candidates for a concept, then ground each against live availability and Atom premium inventory — so every returned name is actually obtainable. Use when search_brandable_domains' curated results aren't enough, or the user explicitly wants fresh/invented/made-up names they can register. (For existing curated listings, prefer search_brandable_domains.)

Returns results[], each with: domain (full name incl. extension), status ('available' = registrable now | 'premium' = an Atom listing), price + currency when known, style_tags, and url. Only names with availability/price attached are returned — never ungrounded ideas. Present as a list noting which are register-now vs Atom premium listings.

ParametersJSON Schema
NameRequiredDescriptionDefault
countNoNumber of candidates to return (capped server-side).
styleNoOptional stylistic preferences.
conceptYesThe idea, product, or business to generate names for.
industryNoOptional industry or category.
extensionsNoOptional preferred extensions.

Output Schema

ParametersJSON Schema
NameRequiredDescription
urlYesAtom marketplace search URL for the concept.
countNoNumber of candidates returned.
conceptNo
resultsYesInvented candidates, each grounded against live availability/inventory.
successYes
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint=true and openWorldHint=false. The description adds that results are grounded against live availability, only returning obtainable names with associated price/status, and describes the output format. No contradictions and adds significant context beyond annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is well-structured with the core purpose first, followed by usage guidelines and output explanation. It is slightly lengthy but every sentence adds value. Could be slightly more concise but still effective.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the complexity (5 parameters, 1 required) and the existence of an output schema, the description fully explains the tool's behavior, output format, and grounding process. It covers all necessary context for an agent to invoke it correctly.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so baseline is 3. The description does not add much parameter-specific detail beyond the schema; it mentions the count cap server-side but that's already implied. The description focuses on the tool's behavior and output, not parameter meanings.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states it invents new brandable domain names for a concept, grounding them against live availability and Atom premium inventory. It distinguishes from sibling search_brandable_domains by specifying that this tool generates fresh/invented names rather than using curated listings.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly says to use when search_brandable_domains' curated results are insufficient or when the user wants invented names, and to prefer search_brandable_domains for existing curated listings. This provides clear when-to-use and when-not-to-use guidance.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

get_domain_detailsA
Read-only
Inspect

Get the full detail record for ONE specific Atom domain listing — the deep-dive after a user picks a name from search_brandable_domains or generate_domain_names, or asks to know more about a particular domain.

Returns: status, price + currency, extension_options[] (other TLDs of the name for sale, with prices), category, description, age/traffic when available, and purchase_url/details_url. If the domain is not an Atom listing, returns error "not_found" (then use check_domain_availability for registry status). Present price, key attributes, and the purchase link.

ParametersJSON Schema
NameRequiredDescriptionDefault
domainYesThe domain to look up, including extension.

Output Schema

ParametersJSON Schema
NameRequiredDescription
ageNo
urlYes
priceNoListing price in USD.
domainYes
statusNo
successYes
trafficNo
categoryNo
currencyNo
descriptionNo
details_urlNoAtom details page.
purchase_urlNoDirect purchase link.
extension_optionsNoOther TLDs of the name for sale, with prices.
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Beyond the readOnlyHint annotation, the description details the returned fields (status, price, currency, extension_options, category, description, age/traffic, purchase_url/details_url) and error handling (not_found error). No contradictions with annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single paragraph that is front-loaded with the purpose, then lists return fields and error handling. It is slightly verbose but well-structured and all information is relevant.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the simple schema and existence of an output schema, the description covers purpose, usage context, return fields, error handling, and alternative tool guidance. It is fully complete for an agent to use correctly.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The schema already describes the 'domain' parameter with 100% coverage. The description adds context that the domain must be an Atom listing and implies the format includes the extension, which provides additional meaning beyond the schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the purpose: 'Get the full detail record for ONE specific Atom domain listing.' It specifies the verb 'get' and the resource 'domain details,' and distinguishes itself from siblings by noting it is a 'deep-dive after a user picks a name from search_brandable_domains or generate_domain_names.'

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly states when to use ('after a user picks a name from search_brandable_domains or generate_domain_names') and when not to ('If the domain is not an Atom listing, returns error "not_found" (then use check_domain_availability for registry status)'), providing clear alternatives.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

screen_trademark_conflictsA
Read-only
Inspect

Run a PRELIMINARY screen for existing trademark conflicts on a brand or domain name against public USPTO records. Use when a user asks whether a name is trademarked, already taken as a trademark, or safe to use as a brand. Returns preliminary exact/close matches with status and owner — this is a screen, not legal advice or a clearance opinion.

ParametersJSON Schema
NameRequiredDescriptionDefault
modeNoMatch strictness. exact = identical mark; phrase = close; broad = widest.phrase
nameYesThe brand or domain name to screen (extension is ignored, e.g. "acme" or "acme.com").
limitNoMax results (capped server-side).
statusNoFiling status filter. active = live registered marks.all
trademark_classNoOptional Nice/USPTO international class to filter by (1–45, e.g. 9 = software, 35 = business services).

Output Schema

ParametersJSON Schema
NameRequiredDescription
urlYes
nameYesThe normalized name that was screened.
countNoNumber of matches returned.
totalNoTotal matching records upstream.
matchesYesPreliminary exact/close trademark matches from public USPTO records.
successYes
disclaimerYesPreliminary screen, not legal advice.
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint=true, so the description's disclosure of a preliminary, non-authoritative screen adds meaningful context. It states the data source (public USPTO records) and the result type (matches with status/owner). No contradictions.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Three concise sentences: purpose, usage guidance, and result/disclaimer. Every sentence is informative without fluff. Front-loaded with key action.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the existence of an output schema (not shown but signaled), the description adequately covers the tool's scope. It could optionally mention filtering by trademark class, but the schema handles that. The disclaimer about not being legal advice adds necessary context.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% with detailed parameter descriptions. The description adds no extra meaning for parameters beyond what the schema provides. Baseline 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the verb 'Run a PRELIMINARY screen', the resource 'trademark conflicts on a brand or domain name against public USPTO records', and distinguishes from domain-focused sibling tools. It specifies it returns 'exact/close matches with status and owner'.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly says when to use: 'when a user asks whether a name is trademarked, already taken as a trademark, or safe to use as a brand.' Also provides a clear limitation: 'this is a screen, not legal advice or a clearance opinion,' guiding against over-reliance.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

search_brandable_domainsA
Read-only
Inspect

Search Atom's curated marketplace of premium, brandable domains by concept, industry, or style. THE primary tool for naming a startup, product, or company when the user wants real, buyable names (not just ideas). Use whenever a user asks for brandable/business/domain name suggestions for an idea, or wants names they can actually purchase. No login required.

Returns results[] of currently-available premium listings, each with: domain (full name incl. extension), price (USD, the actual buy-now price), style_tags, category, and url (the Atom buy/details page). Every returned name is actively for sale on Atom. To go deeper on one, call get_domain_details; to appraise any name, call appraise_domain; to buy, register_domain or get_checkout_link. Present results as a ranked list with names, prices, and the buy links.

ParametersJSON Schema
NameRequiredDescriptionDefault
limitNoNumber of results to return (capped server-side).
styleNoOptional stylistic preferences.
conceptYesThe idea, product, or business to find names for.
industryNoOptional industry or category, e.g. 'fintech', 'wellness'.
max_priceNoOptional maximum price filter (USD).
extensionsNoOptional preferred extensions, e.g. ['.com', '.io'].

Output Schema

ParametersJSON Schema
NameRequiredDescription
urlYesAtom marketplace search URL for the concept.
countNoNumber of results returned.
conceptNoThe concept that was searched.
resultsYesCurrently-available premium listings, ranked.
successYes
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already provide readOnlyHint=true. Description adds that no login is required, results are currently-available premium listings, and each name is actively for sale. This enriches behavioral understanding.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Well-structured with front-loaded purpose and guidelines. Slightly lengthy but every sentence adds value, covering usage, returns, and related tools.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given 6 parameters and an output schema, the description is complete: it explains when to use, what returns, related tools, and login requirement. No gaps.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so baseline is 3. The description does not add parameter semantics beyond what the schema already provides.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states it searches for brandable domains by concept, industry, or style. It distinguishes from sibling tools like appraise_domain and get_domain_details by emphasizing it returns buyable names.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly says it's the primary tool for naming when users want real, buyable names. Provides context on when to use and directs to other tools for deeper actions.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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