The Approval Invalidation API from WritersLogic Verifiable AI Agent Hub — 1 operation(s) for approval invalidation.
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openapi: 3.2.0
info:
title: WritersLogic Verifiable AI Agent Hub Approval Invalidation…
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: Approval Invalidation
paths:
/api/v1/approval-invalidation:
post:
operationId: approval_invalidation
summary: Does a change to the approved thing invalidate the approval under a materiality…
description: 'Compares what a human or system approved with what is about to be executed (a quote, order, plan, diff summary: any JSON) under a caller-supplied materiality policy: per-path rules exact / ignore / numeric tolerance (absolute or percent) / no-increase / no-decrease, with the longest matching path winning and a default for unlisted paths. Also covers quote revisions (approved revision number must equal the current one) and expiry (approvedAt + validForSeconds against a caller asOf). pass = approval still covers the action; fail = a material change, a superseded revision or an expired approval (witnesses name the path, approved and current values); unknown = the policy or time evidence needed is missing. Does not decide what is material for you.
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: agent-infra
x-sample-url: https://agents.writerslogic.com/api/v1/samples/approval-invalidation
security:
- x402: []
- apiKey: []
requestBody:
required: true
content:
application/json:
schema:
type: object
additionalProperties: false
required:
- approved
- current
properties:
approved:
description: The approved snapshot (JSON).
current:
description: The version about to be executed (JSON).
policy:
type: object
additionalProperties: false
properties:
default:
type: string
enum:
- material
- ignore
description: Rule for paths no field rule covers. Default material (any change invalidates).
fields:
type: array
maxItems: 100
items:
type: object
additionalProperties: false
required:
- path
- rule
properties:
path:
type: string
maxLength: 300
description: JSON Pointer prefix; "*" matches one token.
rule:
type: string
enum:
- exact
- ignore
- numeric-tolerance
- no-increase
- no-decrease
abs:
type: number
minimum: 0
maximum: 1000000000000000
description: 'numeric-tolerance: allowed absolute difference.'
pct:
type: number
minimum: 0
maximum: 1000
description: 'numeric-tolerance: allowed difference as percent of the approved value. Either bound being met is enough.'
approvedRevision:
type: integer
minimum: 0
maximum: 1000000000
currentRevision:
type: integer
minimum: 0
maximum: 1000000000
requireSameRevision:
type: boolean
description: 'Default true when either revision is given (a missing partner gives unknown): an approval for another revision does not cover this one. Send false to ignore the revisions.'
approvedAt:
type: string
maxLength: 40
description: RFC 3339 instant.
validForSeconds:
type: integer
minimum: 0
maximum: 315360000
asOf:
type: string
maxLength: 40
description: RFC 3339 instant for the expiry check; no clock is read.
example:
approved:
total: 1000
currency: USD
items:
- sku: A
qty: 2
note: v1
current:
total: 1004
currency: USD
items:
- sku: A
qty: 2
note: v2
policy:
default: material
fields:
- path: /total
rule: numeric-tolerance
pct: 1
- path: /note
rule: ignore
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.'
invalidated:
type: boolean
materialChanges:
type: array
description: At most 100 listed.
items:
type: object
properties:
path:
type: string
rule:
type: string
approved: {}
current: {}
materialCount:
type: integer
immaterialCount:
type: integer
expired:
type: boolean
description: Present when expiry was evaluated.
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:
- Approval Invalidation
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