WritersLogic Verifiable AI Agent Hub Document Supersession API
The Document Supersession API from WritersLogic Verifiable AI Agent Hub — 1 operation(s) for document supersession.
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curl "https://apis.io/api/v1/apis/writerslogic-com:writerslogic-com-document-supersession-api"
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OpenAPI Specification
openapi: 3.2.0
info:
title: WritersLogic Verifiable AI Agent Hub Document Supersession…
version: 2.0.0
description: Pay-per-call agents settled in USDC on Base via x402. Every response carries a signed provenance envelope.
contact:
name: WritersLogic
url: https://writerslogic.com/agents
email: agents@writerslogic.com
servers:
- url: https://agents.writerslogic.com
tags:
- name: Document Supersession
paths:
/api/v1/document-supersession:
post:
operationId: document_supersession
summary: Is this document still current, or superseded by a newer one?
description: 'Given the target document id, the supplied set of documents (id, effective date, which ids each one supersedes, withdrawn flag) and a reference date, reports whether the target is superseded or withdrawn as of that date, following supersession chains, and names the superseding document and its date. For an agent about to rely on a standard, price list, policy or datasheet revision. It can only see the documents supplied: ''current'' requires the caller to declare the list complete, otherwise the answer is unknown. Does not fetch documents or compare their text.
Price: 0.005 USDC on Base (x402).'
x-x402-price-usdc: '0.005'
x-x402-amount: '5000'
x-payment-info:
protocols:
- x402
price:
mode: fixed
currency: USD
amount: '0.005'
x-audience: business
x-sample-url: https://agents.writerslogic.com/api/v1/samples/document-supersession
security:
- x402: []
- apiKey: []
requestBody:
required: true
content:
application/json:
schema:
type: object
additionalProperties: false
required:
- target
- documents
- asOf
properties:
target:
type: string
maxLength: 200
description: Id of the document being relied on.
documents:
type: array
items:
type: object
additionalProperties: false
required:
- id
properties:
id:
type: string
maxLength: 200
description: Document id.
effectiveDate:
type: string
pattern: ^\d{4}-\d{2}-\d{2}(T\d{2}:\d{2}(:\d{2}(\.\d+)?)?(Z|[+-]\d{2}:\d{2}))?$
maxLength: 40
supersedes:
type: array
items:
type: string
maxLength: 200
description: Id this document replaces.
maxItems: 50
withdrawn:
type: boolean
description: Withdrawn without replacement.
maxItems: 200
minItems: 1
description: The documents the caller knows of, including the target.
asOf:
type: string
pattern: ^\d{4}-\d{2}-\d{2}(T\d{2}:\d{2}(:\d{2}(\.\d+)?)?(Z|[+-]\d{2}:\d{2}))?$
maxLength: 40
description: 'Reference date: a superseding document counts only if effective on or before it.'
listComplete:
type: boolean
description: The caller asserts documents holds every document that could supersede the target. Required for a pass.
example:
target: SPEC-2023-04
documents:
- id: SPEC-2023-04
effectiveDate: '2023-04-01'
- id: SPEC-2025-01
effectiveDate: '2025-01-15'
supersedes:
- SPEC-2023-04
- id: SPEC-2026-09
effectiveDate: '2026-09-01'
supersedes:
- SPEC-2025-01
asOf: '2026-11-04'
listComplete: true
responses:
'200':
description: Paid result with provenance
content:
application/json:
schema:
type: object
properties:
data:
type: object
properties:
status:
type: string
enum:
- pass
- fail
- unknown
- unsupported
description: 'pass: every rule held. fail: a rule was violated (see witnesses). unknown: the input lacks the evidence to decide. unsupported: outside what this engine covers. Missing evidence is never a pass.'
requirements:
type: array
items:
type: object
properties:
id:
type: string
state:
type: string
enum:
- met
- unmet
- unknown
optional:
type: boolean
needs:
type: array
items:
type: object
properties:
key:
type: string
state:
type: string
enum:
- 'yes'
- 'no'
- unknown
reason:
type: string
enum:
- satisfied
- missing
- stale
- no-reference-instant
- no-evidence-date
- value-mismatch
- type-mismatch
- conflicting-evidence
- negative
evidence:
description: The evidence value the verdict rests on.
counts:
type: object
properties:
met:
type: integer
unmet:
type: integer
unknown:
type: integer
optional:
type: integer
description: Non-optional requirements by state; optional ones are counted separately.
current:
anyOf:
- type: boolean
- type: 'null'
description: true when pass, false when superseded or withdrawn, null when undecidable.
supersededBy:
type: array
items:
type: object
properties:
id:
type: string
effectiveDate:
type: string
via:
type: array
items:
type: string
description: Documents effective by asOf that replace the target, directly or through a chain.
scheduled:
type: array
items:
type: object
properties:
id:
type: string
effectiveDate:
type: string
description: Superseding documents that take effect after asOf.
witnesses:
type: array
items:
type: object
properties:
ruleId:
type: string
detail:
type: string
path:
type: string
description: JSON pointer or dotted path into the input.
offset:
type: integer
index:
type: integer
expected:
description: What the rule required.
actual:
description: What the input had.
versions:
type: object
description: Every semantic dependency of this answer (engine, tables and their as-of dates, tokenizer, calendar, rounding profile).
limits:
type: array
items:
type: string
deterministic:
type: boolean
description: 'Always true: pure code, no model.'
_provenance:
type: object
description: C2PA-aligned manifest and W3C VC 2.0 (eddsa-jcs-2022) issued by the hub DID; verify at POST /api/v1/verify-provenance
required:
- data
- _provenance
'400':
description: Invalid request (no payment consumed)
content:
application/json:
schema:
type: object
properties:
error:
type: string
code:
type: string
'401':
description: Invalid X-API-KEY
content:
application/json:
schema:
type: object
properties:
error:
type: string
code:
type: string
'402':
description: Payment required or invalid
content:
application/json:
schema:
type: object
description: x402 v2 PaymentRequired (also base64 in the PAYMENT-REQUIRED header)
properties:
x402Version:
type: integer
error:
type: string
code:
type: string
resource:
type: object
accepts:
type: array
items:
type: object
extensions:
type: object
'502':
description: Upstream failure; the payment is released or not settled
content:
application/json:
schema:
type: object
properties:
error:
type: string
code:
type: string
tags:
- Document Supersession
components:
securitySchemes:
x402:
type: apiKey
in: header
name: PAYMENT-SIGNATURE
description: x402 v2 payment payload (base64) sent after a 402 challenge
apiKey:
type: apiKey
in: header
name: X-API-KEY