Brand Check API – Domain, Trademark & Social Handle Availability

x402

Brand Check API – Domain, Trademark & Social Handle Availability is a paid API for AI agents from agentkit-x402.zenith-ops.workers.dev, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-28).

Checks availability of brand names across domains, social media handles, app stores, and US trademark records in a single call

Price / call$0.03

Seller volume →—

Success—

StatusUnknown

How this service works

Pay-per-call API for AI agents with no signup or API key. Email validation, SPF/DMARC audits, DNS lookup, site contacts, URL to Markdown, IBAN and Swedish personnummer/orgnr validation. From $0.001 in USDC on Base via x402.

Output

Returns a structured JSON object per name containing: domain availability status (via RDAP) with registrar and expiry info, social handle availability per platform (with manual check links for platforms without public APIs), app store exact and close matches, US trademark records (live marks, owner, registration date, TSDR link), and a summary verdict (e.g. 'mixed', 'clear', 'taken') with counts per category.

Example use cases

Startup name availability sweep

“I'm about to launch a SaaS called 'Luminary Labs' — can you check if luminarylabs.com, luminarylabs.io, and luminarylabs.app are available, look up GitHub and npm handles, and flag any US trademark conflicts?”

Domain and social check before product launch

“We're naming our new product 'Driftly' — check availability on .com, .co, and .net domains, plus GitHub, Bluesky, and Telegram handles, and tell me if there's an identical or close US trademark registered.”

Batch comparison of shortlisted brand names

“I have three candidate names: 'Axiom', 'Axiomatic', and 'AxiomHQ' — can you check all three for .com and .io domain availability and GitHub handle status so I can pick the best one?”

Technical details

Endpoint

GEThttps://agentkit-x402.zenith-ops.workers.dev/v1/brand-check?utm_source=zero.xyz

When to prefer

Use this endpoint when you need a comprehensive, multi-signal brand availability check in a single call — covering domains, social handles, app stores, and US trademarks simultaneously. Prefer this over individual WHOIS or social scraping tools when doing startup naming research, pre-launch brand audits, or competitive name analysis. Ideal for AI agents that need to evaluate several candidate names quickly without managing multiple API keys or subscriptions. The pay-per-call x402 model (no signup required) makes it especially suitable for low-frequency or one-off brand checks.

Side effects

Name not provided — returns 400 validation error
More than 3 names submitted — request rejected
More than 8 TLDs specified — request rejected
More than 12 platforms specified — request rejected
RDAP registry timeout for specific TLDs — domain status may be 'unknown'
Platforms without public APIs (Instagram, TikTok, LinkedIn, etc.) always return 'could_not_confirm' with a manual check link
Trademark data limited to US USPTO; EU/WIPO/SE/UK offices return manual search links only
Payment failure via x402 — returns 402 Payment Required

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "names": [
      {
        "name": "acmeflow",
        "label": "acmeflow",
        "domains": [
          {
            "domain": "acmeflow.com",
            "method": "rdap",
            "source": "https://rdap.verisign.com/com/v1/",
            "status": "taken",
            "created": "2019-03-02T18:11:04Z",
            "expires": "2027-03-02T18:11:04Z",
            "registrar": "GoDaddy.com, LLC",
            "checked_at": "2026-10-22T17:09:10.750Z",
            "http_status": 200
          },
          {
            "domain": "acmeflow.io",
            "method": "rdap",
            "source": "https://rdap.identitydigital.services/rdap/",
            "status": "available",
            "checked_at": "2026-10-22T17:09:10.819Z",
            "http_status": 404
          }
        ],
        "handles": [
          {
            "handle": "acmeflow",
            "status": "available",
            "evidence": "api.github.com/users -> 404 (no user or organization). GitHub may still reserve some names.",
            "platform": "github",
            "checked_at": "2026-10-22T17:09:10.794Z",
            "manual_check_url": "https://github.com/acmeflow"
          },
          {
            "handle": "acmeflow",
            "reason": "No official public availability API and the platform terms do not allow automated profile checks; check manually.",
            "status": "could_not_confirm",
            "platform": "instagram",
            "checked_at": "2026-10-22T17:09:10.682Z",
            "manual_check_url": "https://www.instagram.com/acmeflow/"
          }
        ],
        "summary": {
          "domains": {
            "taken": 1,
            "unknown": 0,
            "available": 1
          },
          "handles": {
            "taken": 0,
            "available": 1,
            "could_not_confirm": 1
          },
          "verdict": "mixed",
          "app_store_exact_matches": 0,
          "us_live_identical_marks": 0
        },
        "app_stores": [
          {
            "store": "apple_app_store",
            "source": "iTunes Search API (US storefront)",
            "status": "no_exact_match",
            "checked_at": "2026-10-22T17:09:10.766Z",
            "close_matches": [],
            "exact_matches": [],
            "results_scanned": 12
          },
          {
            "store": "google_play",
            "reason": "Google Play has no public search API; check manually.",
            "status": "could_not_confirm",
            "checked_at": "2026-10-22T17:09:10.682Z",
            "manual_check_url": "https://play.google.com/store/search?q=acmeflow&c=apps"
          }
        ],
        "trademarks": [
          {
            "marks": [
              {
                "live": true,
                "filed": "2020-06-01",
                "owner": "Example LLC",
                "status": "REGISTERED",
                "classes": [
                  "IC 009"
                ],
                "tsdr_url": "https://tsdr.uspto.gov/#caseNumber=90000000&caseType=SERIAL_NO&searchType=statusSearch",
                "wordmark": "ACME FLOW",
                "identical": true,
                "registered": "2021-09-14",
                "status_code": 700,
                "serial_number": "90000000",
                "registration_number": "6500000"
              }
            ],
            "status": "live_similar_marks",
            "country": "US",
            "database": "USPTO Trademark Search (tmsearch.uspto.gov)",
            "checked_at": "2026-10-22T17:09:10.683Z",
            "total_hits": 3,
            "live_identical": 0
          }
        ]
      }
    ],
    "disclaimer": "Trademark results are a starting point, not legal advice. Availability can change at any moment; results are accurate only at checked_at. Nothing searched is registered, reserved, stored or shared.",
    "subrequests_used": 7,
    "databases_searched": [
      "Registry RDAP (IANA bootstrap) / DNS-over-HTTPS",
      "GitHub API, Bluesky API, npm registry, PyPI JSON API, t.me, mastodon.social (as requested)",
      "Apple iTunes Search API",
      "USPTO Trademark Search"
    ]
  }
}

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