CrawlCheck Anchor API
The Anchor API from CrawlCheck — 4 operation(s) for anchor.
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This API
curl "https://apis.io/api/v1/apis/crawlcheck-io:crawlcheck-io-anchor-api"
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OpenAPI Specification
openapi: 3.2.0
info:
title: Crawlcheck Io Anchor 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 Anchor 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: Anchor
paths:
/api/v1/anchor:
post:
operationId: anchorCreateV1
summary: 'Citation notarization: {url, text} fetches the page, finds the quoted passage…'
responses:
'201':
description: crawlcheck-anchor
content:
application/json:
examples:
worked:
value:
kind: crawlcheck-anchor
v: 1
id: 3f9a1c0be27d4e5a8c61
url: https://example.com/report
anchored_at: '2026-10-07T04:10:00.000Z'
passage:
text: Median page weight rose 12% between January and June.
sha256: 8d2e…
chars: 53
match: exact
selector:
text_fragment: https://example.com/report#:~:text=Median%20page%20weight%20rose%2012%25%20between%20January%20and%20June.
prefix: 'In the 2026 sample, '
suffix: ' The share of pages over'
page:
status: 200
content_type: text/html
bytes: 48211
text_sha256: a41c…
seal:
day: '2026-10-07'
leaf_id: anc-3f9a1c0be27d4e5a8c61
lookup: https://crawlcheck.io/api/seal/lookup?id=anc-3f9a1c0be27d4e5a8c61&day=2026-10-07
proof: https://crawlcheck.io/proof/2026-10-07
recheck: https://crawlcheck.io/api/v1/anchor/3f9a1c0be27d4e5a8c61?recheck=1
sha256: …
signature: …
schema:
type:
- object
- 'null'
properties:
kind:
type:
- string
- 'null'
v:
type:
- number
- 'null'
id:
type:
- string
- 'null'
url:
type:
- string
- 'null'
anchored_at:
type:
- string
- 'null'
passage:
type:
- object
- 'null'
properties:
text:
type:
- string
- 'null'
sha256: {}
chars:
type:
- number
- 'null'
match:
type:
- string
- 'null'
additionalProperties: true
selector:
type:
- object
- 'null'
properties:
text_fragment:
type:
- string
- 'null'
prefix:
type:
- string
- 'null'
suffix:
type:
- string
- 'null'
additionalProperties: true
page:
type:
- object
- 'null'
properties:
status:
type:
- number
- 'null'
content_type:
type:
- string
- 'null'
bytes:
type:
- number
- 'null'
text_sha256: {}
additionalProperties: true
seal:
type:
- object
- 'null'
properties:
day:
type:
- string
- 'null'
leaf_id:
type:
- string
- 'null'
lookup:
type:
- string
- 'null'
proof:
type:
- string
- 'null'
additionalProperties: true
recheck:
type:
- string
- 'null'
sha256: {}
signature: {}
additionalProperties: true
x-schema-source: worked-example
'422':
description: page unreachable or passage not found
x-codeSamples:
- lang: Shell
label: curl
source: 'curl -s -X POST ''https://crawlcheck.io/api/v1/anchor'' -H ''content-type: application/json'' -d ''{"url":"https://example.com/report","text":"Median page weight rose 12% between January and June."}'''
security: []
x-auth: public; no credential read
requestBody:
required: true
content:
application/json:
schema:
type:
- object
- 'null'
properties:
url:
type:
- string
- 'null'
text:
type:
- string
- 'null'
additionalProperties: true
x-schema-source: worked-example
examples:
worked:
summary: The request behind the worked response
value:
url: https://example.com/report
text: Median page weight rose 12% between January and June.
x-crawlcheck-budget:
request_body_max: 1048576
items: 'text: the quoted passage, 20 to 2,000 characters; webhook: one https URL up to 500 characters (400 otherwise)'
rate_limit: 'shared: 30 calls per address per UTC hour across the MCP checks, anchors, origin, incidents and high-risk confirm (429)'
tags:
- Anchor
servers:
- url: https://crawlcheck.io
/api/v1/anchor/{id}/watch:
post:
operationId: anchorWatchV1
summary: 'Correction propagation: {webhook} (https, public host).'
parameters:
- name: id
in: path
required: true
schema:
type: string
responses:
'200':
description: watching
content:
application/json:
examples:
worked:
value:
anchor_id: 3f9a1c0be27d4e5a8c61
watching: true
every: 15 minutes
events:
- anchor.status_changed
current_status: present
ok: true
webhooks: 1
schema:
type:
- object
- 'null'
properties:
anchor_id:
type:
- string
- 'null'
watching:
type:
- boolean
- 'null'
every:
type:
- string
- 'null'
events:
type:
- array
- 'null'
items:
type:
- string
- 'null'
current_status:
type:
- string
- 'null'
ok:
type:
- boolean
- 'null'
webhooks:
type:
- number
- 'null'
additionalProperties: true
x-schema-source: worked-example
'404':
description: no such anchor
x-codeSamples:
- lang: Shell
label: curl
source: 'curl -s -X POST ''https://crawlcheck.io/api/v1/anchor/3f9a1c0be27d4e5a8c61/watch'' -H ''content-type: application/json'' -d ''{"webhook":"https://agent.example/hooks/crawlcheck"}'''
security: []
x-auth: public; no credential read
requestBody:
required: true
content:
application/json:
schema:
type:
- object
- 'null'
properties:
webhook:
type:
- string
- 'null'
additionalProperties: true
x-schema-source: worked-example
examples:
worked:
summary: The request behind the worked response
value:
webhook: https://agent.example/hooks/crawlcheck
x-crawlcheck-budget:
request_body_max: 1048576
tags:
- Anchor
servers:
- url: https://crawlcheck.io
/api/v1/anchor/sink/{token}:
get:
operationId: anchorSinkV1
summary: 'A test webhook: use https://crawlcheck.io/api/v1/anchor/sink/ as a webhook and…'
parameters:
- name: token
in: path
required: true
schema:
type: string
responses:
'200':
description: deliveries
content:
application/json:
examples:
worked:
value:
token: mytestsink0000001
deliveries:
- received_at: '2026-10-07T05:02:11.000Z'
from: crawlcheck
body:
event: anchor.status_changed
check:
kind: crawlcheck-anchor-check
status: no_longer_present
previous_status: present
sha256: …
signature: …
note: The last 10 deliveries to this sink, kept one day.
schema:
type:
- object
- 'null'
properties:
token:
type:
- string
- 'null'
deliveries:
type:
- array
- 'null'
items:
type:
- object
- 'null'
properties:
received_at:
type:
- string
- 'null'
from:
type:
- string
- 'null'
body:
type:
- object
- 'null'
properties:
event:
type:
- string
- 'null'
check:
type:
- object
- 'null'
properties:
kind:
type:
- string
- 'null'
status:
type:
- string
- 'null'
previous_status:
type:
- string
- 'null'
sha256: {}
signature: {}
additionalProperties: true
additionalProperties: true
additionalProperties: true
note:
type:
- string
- 'null'
additionalProperties: true
x-schema-source: worked-example
x-codeSamples:
- lang: Shell
label: curl
source: curl -s 'https://crawlcheck.io/api/v1/anchor/sink/mytestsink0000001'
security: []
x-auth: public; no credential read
tags:
- Anchor
servers:
- url: https://crawlcheck.io
/api/v1/anchor/{id}:
get:
operationId: anchorGetV1
summary: An anchor and its seal state.
parameters:
- name: id
in: path
required: true
schema:
type: string
- name: recheck
in: query
schema:
type: string
enum:
- '1'
responses:
'200':
description: anchor, seal, and check when asked
content:
application/json:
examples:
worked:
value:
check:
kind: crawlcheck-anchor-check
v: 1
anchor_id: 3f9a1c0be27d4e5a8c61
url: https://example.com/report
checked_at: '2026-10-20T09:00:00.000Z'
status: no_longer_present
why: the passage is not in the page's visible text now; the anchor still proves it was there at 2026-10-07T04:10:00.000Z
page:
status: 200
text_sha256: b07e…
text_changed_since_anchor: true
sha256: …
signature: …
anchor:
kind: crawlcheck-anchor
id: 3f9a1c0be27d4e5a8c61
seal:
day: '2026-10-07'
sealed: true
leaf_index: 812
root: 5c0d…
state: in the sealed Merkle root for 2026-10-07, timestamped with OpenTimestamps
schema:
type:
- object
- 'null'
properties:
check:
type:
- object
- 'null'
properties:
kind:
type:
- string
- 'null'
v:
type:
- number
- 'null'
anchor_id:
type:
- string
- 'null'
url:
type:
- string
- 'null'
checked_at:
type:
- string
- 'null'
status:
type:
- string
- 'null'
why:
type:
- string
- 'null'
page:
type:
- object
- 'null'
properties:
status:
type:
- number
- 'null'
text_sha256: {}
text_changed_since_anchor:
type:
- boolean
- 'null'
additionalProperties: true
sha256: {}
signature: {}
additionalProperties: true
anchor:
type:
- object
- 'null'
properties:
kind:
type:
- string
- 'null'
id:
type:
- string
- 'null'
additionalProperties: true
seal:
type:
- object
- 'null'
properties:
day:
type:
- string
- 'null'
sealed:
type:
- boolean
- 'null'
leaf_index:
type:
- number
- 'null'
root: {}
state:
type:
- string
- 'null'
additionalProperties: true
additionalProperties: true
x-schema-source: worked-example
'404':
description: no such anchor
x-codeSamples:
- lang: Shell
label: curl
source: curl -s 'https://crawlcheck.io/api/v1/anchor/3f9a1c0be27d4e5a8c61?recheck=1'
security: []
x-auth: public; no credential read
tags:
- Anchor
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