CrawlCheck Engines API
The Engines API from CrawlCheck — 1 operation(s) for engines.
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This API
curl "https://apis.io/api/v1/apis/crawlcheck-io:crawlcheck-io-engines-api"
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OpenAPI Specification
openapi: 3.2.0
info:
title: Crawlcheck Io Engines 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 Engines 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: Engines
paths:
/api/v1/engines:
get:
operationId: searchEngines
summary: How a site reads to Baidu, Naver, Seznam and Yandex, and whether it can use…
parameters:
- name: domain
in: query
required: true
schema:
type: string
- name: indexnow_key
in: query
schema:
type: string
- name: key_location
in: query
schema:
type: string
- name: yml
in: query
description: URL of the site's YML product feed (same domain) to check against Yandex's requirements
schema:
type: string
- name: business_feed
in: query
description: URL of the site's Yandex Business organization feed (same domain) to check
schema:
type: string
responses:
'200':
description: signed crawlcheck-engines
content:
application/json:
examples:
worked:
summary: Shape; values from a live read, shortened.
value:
kind: crawlcheck-engines
v: 1
domain: seznam.cz
site: https://crawlcheck.io/id/site/seznam.cz
read_at: '2026-10-10T11:40:00.000Z'
homepage:
status: 200
final_host: www.seznam.cz
bytes: 120000
robots_txt: read
audience:
CN: []
KR: []
CZ:
- domain ends in .cz
- page language cs
engines:
- engine: seznam
relevant: true
audience:
market: Czechia
because:
- domain ends in .cz
- page language cs
search_share:
percent: 15.05
as_of: 2026-09
source: https://gs.statcounter.com/search-engine-market-share/all/czech-republic
signals:
verification: false
robots:
read: true
own_group: false
root_allowed: true
checks:
- check: SeznamBot may fetch the homepage
status: ok
detail: robots.txt has no SeznamBot group; the * group applies
reading: Each engine is graded only where the site's audience is in its market…
schema:
type:
- object
- 'null'
properties:
kind:
type:
- string
- 'null'
v:
type:
- number
- 'null'
domain:
type:
- string
- 'null'
site:
type:
- string
- 'null'
read_at:
type:
- string
- 'null'
homepage:
type:
- object
- 'null'
properties:
status:
type:
- number
- 'null'
final_host:
type:
- string
- 'null'
bytes:
type:
- number
- 'null'
additionalProperties: true
robots_txt:
type:
- string
- 'null'
audience:
type:
- object
- 'null'
properties:
CN:
type:
- array
- 'null'
items: {}
KR:
type:
- array
- 'null'
items: {}
CZ:
type:
- array
- 'null'
items:
type:
- string
- 'null'
additionalProperties: true
engines:
type:
- array
- 'null'
items:
type:
- object
- 'null'
properties:
engine:
type:
- string
- 'null'
relevant:
type:
- boolean
- 'null'
audience:
type:
- object
- 'null'
properties:
market:
type:
- string
- 'null'
because:
type:
- array
- 'null'
items:
type:
- string
- 'null'
search_share:
type:
- object
- 'null'
properties:
percent:
type:
- number
- 'null'
as_of:
type:
- string
- 'null'
source:
type:
- string
- 'null'
additionalProperties: true
additionalProperties: true
signals:
type:
- object
- 'null'
properties:
verification:
type:
- boolean
- 'null'
robots:
type:
- object
- 'null'
properties:
read:
type:
- boolean
- 'null'
own_group:
type:
- boolean
- 'null'
root_allowed:
type:
- boolean
- 'null'
additionalProperties: true
additionalProperties: true
checks:
type:
- array
- 'null'
items:
type:
- object
- 'null'
properties:
check:
type:
- string
- 'null'
status:
type:
- string
- 'null'
detail:
type:
- string
- 'null'
additionalProperties: true
additionalProperties: true
reading: {}
additionalProperties: true
x-schema-source: worked-example
'400':
description: not a public host
'404':
description: opted out
'429':
description: hourly limit
x-codeSamples:
- lang: Shell
label: curl
source: curl -s 'https://crawlcheck.io/api/v1/engines?domain=seznam.cz'
security: []
x-auth: public; no credential read
tags:
- Engines
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