CrawlCheck Snapshot API
The Snapshot API from CrawlCheck — 2 operation(s) for snapshot.
Work with this as data
Every API here is available over the APIs.io API and to AI agents over MCP.
MCP server
One button, every client — Claude, Cursor, VS Code and the rest.
https://apis.io/mcp
Tools for apis
7 MCP tools reach this
find_apisBrowse and filter every API in the catalog.get_api_artifactsOne API's artifacts, grouped by type.get_openapiThe primary OpenAPI for this API.find_similar_apisAPIs that look like this one.apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.resolveTurn a domain, URL or GitHub org into the provider it belongs to.find_cohortsEvery scored population of providers in the catalog.
Call it yourself
curl for this page
This API
curl "https://apis.io/api/v1/apis/crawlcheck-io:crawlcheck-io-snapshot-api"
All apis
curl "https://apis.io/api/v1/apis?limit=25"Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.
Get an API key
Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.
A second provider on the same verified email joins the account you already have.
OpenAPI Specification
openapi: 3.2.0
info:
title: Crawlcheck Io Snapshot 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 Snapshot 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: Snapshot
paths:
/api/v1/snapshot:
get:
operationId: resolveSnapshotIndex
summary: 'The daily signed snapshot of every public Resolve answer: the latest manifest…'
responses:
'200':
description: crawlcheck-snapshot-index
content:
application/json:
examples:
worked:
summary: Shape of the index with one finished snapshot; not a measurement.
value:
kind: crawlcheck-snapshot-index
v: 1
generated_at: '2026-10-08T07:00:00.000Z'
reading: A daily, signed copy of every public Resolve answer, for mirroring and bulk use. Download the latest manifest, then each part it lists; every line is a ResolveV1 answer you can verify on its own.
license: CC BY 4.0
latest:
id: 2026-10-07-3fa91c
day: '2026-10-07'
records: 2400
parts: 4
finished_at: '2026-10-07T21:17:40.000Z'
manifest: https://crawlcheck.io/api/v1/snapshot/2026-10-07-3fa91c/manifest.json
manifest_sha256: 9c1e0d4f2b7a5e8813c6a0f4d2b9e7c15a3f8e6d4c2b0a9f8e7d6c5b4a3f2e1d
in_progress: null
snapshots:
- id: 2026-10-07-3fa91c
day: '2026-10-07'
records: 2400
parts: 4
finished_at: '2026-10-07T21:17:40.000Z'
manifest_sha256: 9c1e0d4f2b7a5e8813c6a0f4d2b9e7c15a3f8e6d4c2b0a9f8e7d6c5b4a3f2e1d
manifest: https://crawlcheck.io/api/v1/snapshot/2026-10-07-3fa91c/manifest.json
verifier: https://crawlcheck.io/crawlcheck-verify.mjs
docs: https://crawlcheck.io/docs/api#snapshot
schema:
type:
- object
- 'null'
properties:
kind:
type:
- string
- 'null'
v:
type:
- number
- 'null'
generated_at:
type:
- string
- 'null'
reading:
type:
- string
- 'null'
license:
type:
- string
- 'null'
latest:
type:
- object
- 'null'
properties:
id:
type:
- string
- 'null'
day:
type:
- string
- 'null'
records:
type:
- number
- 'null'
parts:
type:
- number
- 'null'
finished_at:
type:
- string
- 'null'
manifest:
type:
- string
- 'null'
manifest_sha256:
type:
- string
- 'null'
additionalProperties: true
in_progress: {}
snapshots:
type:
- array
- 'null'
items:
type:
- object
- 'null'
properties:
id:
type:
- string
- 'null'
day:
type:
- string
- 'null'
records:
type:
- number
- 'null'
parts:
type:
- number
- 'null'
finished_at:
type:
- string
- 'null'
manifest_sha256:
type:
- string
- 'null'
manifest:
type:
- string
- 'null'
additionalProperties: true
verifier:
type:
- string
- 'null'
docs:
type:
- string
- 'null'
additionalProperties: true
x-schema-source: worked-example
x-codeSamples:
- lang: Shell
label: curl
source: curl -s 'https://crawlcheck.io/api/v1/snapshot'
security: []
x-auth: public; no credential read
tags:
- Snapshot
servers:
- url: https://crawlcheck.io
/api/v1/snapshot/{id}/{file}:
get:
operationId: resolveSnapshotFile
summary: 'One file of a finished snapshot: manifest.json (signed crawlcheck-snapshot…'
parameters:
- name: id
in: path
required: true
schema:
type: string
- name: file
in: path
required: true
schema:
type: string
responses:
'200':
description: manifest.json or a gzip part
content:
application/json:
examples:
worked:
summary: 'Shape of a manifest (signature shortened); not a measurement. Parts are fetched the same way: /api/v1/snapshot/{id}/part-0001.ndjson.gz.'
value:
kind: crawlcheck-snapshot
v: 1
snapshot: 2026-10-07-3fa91c
day: '2026-10-07'
started_at: '2026-10-07T18:17:02.000Z'
finished_at: '2026-10-07T21:17:40.000Z'
records: 2400
read: 2456
skipped:
opted_out: 3
not_measured: 0
stale: 53
unsigned: 0
parts:
- path: part-0001.ndjson.gz
records: 600
bytes: 912345
sha256: 4b1f0e2d3c4a5b6c7d8e9f00112233445566778899aabbccddeeff0011223344
record_kind: crawlcheck-resolve
license: CC BY 4.0
base: https://crawlcheck.io/api/v1/snapshot/2026-10-07-3fa91c/
sha256: 9c1e0d4f2b7a5e8813c6a0f4d2b9e7c15a3f8e6d4c2b0a9f8e7d6c5b4a3f2e1d
signature:
v: 1
alg: Ed25519
kid: …
over: sha256
sig: …
schema:
type:
- object
- 'null'
properties:
kind:
type:
- string
- 'null'
v:
type:
- number
- 'null'
snapshot:
type:
- string
- 'null'
day:
type:
- string
- 'null'
started_at:
type:
- string
- 'null'
finished_at:
type:
- string
- 'null'
records:
type:
- number
- 'null'
read:
type:
- number
- 'null'
skipped:
type:
- object
- 'null'
properties:
opted_out:
type:
- number
- 'null'
not_measured:
type:
- number
- 'null'
stale:
type:
- number
- 'null'
unsigned:
type:
- number
- 'null'
additionalProperties: true
parts:
type:
- array
- 'null'
items:
type:
- object
- 'null'
properties:
path:
type:
- string
- 'null'
records:
type:
- number
- 'null'
bytes:
type:
- number
- 'null'
sha256:
type:
- string
- 'null'
additionalProperties: true
record_kind:
type:
- string
- 'null'
license:
type:
- string
- 'null'
base:
type:
- string
- 'null'
sha256:
type:
- string
- 'null'
signature:
type:
- object
- 'null'
properties:
v:
type:
- number
- 'null'
alg:
type:
- string
- 'null'
kid: {}
over:
type:
- string
- 'null'
sig: {}
additionalProperties: true
additionalProperties: true
x-schema-source: worked-example
'404':
description: unknown or deleted snapshot file
x-codeSamples:
- lang: Shell
label: curl
source: curl -s 'https://crawlcheck.io/api/v1/snapshot/2026-10-07-3fa91c/manifest.json' -o manifest.json && node crawlcheck-verify.mjs manifest.json
security: []
x-auth: public; no credential read
tags:
- Snapshot
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