The Confirmation State API from WritersLogic Verifiable AI Agent Hub — 1 operation(s) for confirmation state.
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openapi: 3.2.0
info:
title: WritersLogic Verifiable AI Agent Hub Confirmation State API
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: Confirmation State
paths:
/api/v1/confirmation-state:
post:
operationId: confirmation_state
summary: Classify a confirmation message as submitted, pending, reserved or completed…
description: 'Reads a confirmation page, email or API message and decides which state it states: submitted, pending, reserved or completed, using phrase lists the caller supplies (preferred, because wording is provider-specific) plus an optional default English list. Matches are whole-word, case- and typography-insensitive, returned with offsets in UTF-16, code points, UTF-8 bytes and graphemes, and a match inside a negation scope (''not yet confirmed'') is ignored and reported as negated. Two different states matched at once are a conflict and return unknown unless the caller gives a precedence order. Rule-based; it reads the words, it does not verify that anything actually happened at the provider.
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/confirmation-state
security:
- x402: []
- apiKey: []
requestBody:
required: true
content:
application/json:
schema:
type: object
additionalProperties: false
required:
- text
properties:
text:
type: string
maxLength: 20000
minLength: 1
description: Confirmation text.
rules:
type: array
items:
type: object
additionalProperties: false
properties:
state:
type: string
enum:
- submitted
- pending
- reserved
- completed
phrases:
type: array
items:
type: string
maxLength: 200
maxItems: 30
required:
- state
- phrases
maxItems: 20
description: Caller phrase lists; with these present the defaults are off unless useDefaults is true.
useDefaults:
type: boolean
description: Include the default English phrases. Default true only when rules is absent.
precedence:
type: array
items:
type: string
enum:
- submitted
- pending
- reserved
- completed
maxItems: 4
description: When several states match, the first one listed wins. Without it a conflict is unknown.
example:
text: Thank you. Your order has been submitted and is pending review.
precedence:
- completed
- reserved
- pending
- submitted
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.'
state:
type: string
enum:
- submitted
- pending
- reserved
- completed
- unknown
matches:
type: array
items:
type: object
additionalProperties: false
properties:
state:
type: string
enum:
- submitted
- pending
- reserved
- completed
phrase:
type: string
source:
type: string
enum:
- caller
- default
negated:
type: boolean
span:
type: object
description: 'Half-open [start,end) range in four coordinate systems: UTF-16 code units, code points, UTF-8 bytes, extended grapheme clusters (Intl.Segmenter).'
properties:
utf16:
type: object
properties:
start:
type: integer
end:
type: integer
codePoint:
type: object
properties:
start:
type: integer
end:
type: integer
utf8:
type: object
properties:
start:
type: integer
end:
type: integer
grapheme:
type: object
properties:
start:
type: integer
end:
type: integer
graphemeAligned:
type: boolean
maxItems: 200
resolvedBy:
type: string
enum:
- single-state
- precedence
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:
- Confirmation State
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