The Impersonation API from CrawlCheck — 1 operation(s) for impersonation.
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openapi: 3.2.0
info:
title: Crawlcheck Io Impersonation API
version: '1'
contact:
name: CrawlCheck
url: https://crawlcheck.io/policy
email: hello@crawlcheck.io
license:
name: Terms
url: https://crawlcheck.io/policy
x-core-contract:
promise: 'These operations are the core contract. They stay at /api/v1 and keep answering for at least 180 days after any /api/v2 is announced; their stable fields change only in a new major version, and their provisional fields only after 30 days'' notice, per /docs/api/compatibility. Verifying what they return needs none of these calls: crawlcheck-verify.mjs checks a document on your machine against the published keys (/.well-known/http-message-signatures-directory) and the rotation record, read once with --online or saved for --keys. Everything else documented here is useful but secondary, and may change with the notice its fields'' tags promise.'
operations:
- method: GET
path: /api/v1/resolve
operationId: resolveDomainV1
- method: POST
path: /api/v1/resolve
operationId: resolveBatchV1
- method: POST
path: /api/v1/preflight
operationId: preflightV1
- method: GET
path: /api/v1/decisions/{sha256}
operationId: decisionCheckV1
- method: GET
path: /api/v1/revocations
operationId: revocations
- method: GET
path: /api/v1/visitor
operationId: visitorResolveV1
- method: POST
path: /api/v1/visitor
operationId: visitorResolveBatchV1
- method: GET
path: /api/v1/mcp/scan
operationId: mcpScanUrl
- method: POST
path: /api/v1/mcp/lock/check
operationId: mcpLockCheck
list: https://crawlcheck.io/api/v1/core
description: 'Operations tagged Impersonation across 2 of this provider''s published API definitions: crawlcheck-io-openapi.json, crawlcheck-io-openapi.yml. Each path carries the servers of the definition it was published in.'
servers:
- url: https://crawlcheck.io
tags:
- name: Impersonation
paths:
/api/v1/impersonation:
get:
operationId: impersonationCheck
summary: Does this domain look built to be mistaken for a known brand (Tranco top…
parameters:
- name: domain
in: query
required: false
schema:
type: string
- name: fresh
in: query
required: false
schema:
type: string
enum:
- '1'
responses:
'200':
description: crawlcheck-impersonation
content:
application/json:
examples:
worked:
value:
kind: crawlcheck-impersonation
v: 1
domain: xn--pypal-4ve.com
state: lookalike
checked_at: '2026-10-07T11:30:00.000Z'
technique: idn_homoglyph
brand: paypal.com
brand_rank: 150
label: xn--pypal-4ve
label_unicode: pаypal
scripts:
- latin
- cyrillic
tld: com
brand_frame: Tranco top 10,000
registration:
registered_at: '2026-09-30T00:00:00Z'
rdap_status: 200
age_days: 7
homepage:
status: 200
final_url: https://xn--pypal-4ve.com/
title: 'PayPal: Log in'
site_name: ''
signals:
- lookalike_script
- new_registration
- copies_brand_name
verdict: suspected
doubt: impersonation_suspected
reading: xn--pypal-4ve.com is a idn homoglyph of paypal.com (renders as pаypal.com), and lookalike script, new registration, copies brand name. Do not sign in, pay or connect on the strength of the name.
sha256: …
signature: …
schema:
type:
- object
- 'null'
properties:
kind:
type:
- string
- 'null'
v:
type:
- number
- 'null'
domain:
type:
- string
- 'null'
state:
type:
- string
- 'null'
checked_at:
type:
- string
- 'null'
technique:
type:
- string
- 'null'
brand:
type:
- string
- 'null'
brand_rank:
type:
- number
- 'null'
label:
type:
- string
- 'null'
label_unicode:
type:
- string
- 'null'
scripts:
type:
- array
- 'null'
items:
type:
- string
- 'null'
tld:
type:
- string
- 'null'
brand_frame:
type:
- string
- 'null'
registration:
type:
- object
- 'null'
properties:
registered_at:
type:
- string
- 'null'
rdap_status:
type:
- number
- 'null'
age_days:
type:
- number
- 'null'
additionalProperties: true
homepage:
type:
- object
- 'null'
properties:
status:
type:
- number
- 'null'
final_url:
type:
- string
- 'null'
title:
type:
- string
- 'null'
site_name:
type:
- string
- 'null'
additionalProperties: true
signals:
type:
- array
- 'null'
items:
type:
- string
- 'null'
verdict:
type:
- string
- 'null'
doubt:
type:
- string
- 'null'
reading:
type:
- string
- 'null'
sha256: {}
signature: {}
additionalProperties: true
x-schema-source: worked-example
x-codeSamples:
- lang: Shell
label: curl
source: curl -s 'https://crawlcheck.io/api/v1/impersonation?domain=xn--pypal-4ve.com'
security: []
x-auth: public; no credential read
tags:
- Impersonation
servers:
- url: https://crawlcheck.io
components:
securitySchemes:
licenceKey:
type: apiKey
in: header
name: x-crawlcheck-key
description: 'Your licence key: cc_ followed by 32 hex characters. Sent on every keyed call.'
bearer:
type: http
scheme: bearer
description: The same licence key as a Bearer token. Accepted on /api/v1/* and /api/usage.
externalDocs:
url: https://crawlcheck.io/docs/api
description: Human-readable reference
x-refined-from:
- crawlcheck-io-openapi.json
- crawlcheck-io-openapi.yml