The Duplicate Key Audit API from WritersLogic Verifiable AI Agent Hub — 1 operation(s) for duplicate key audit.
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openapi: 3.2.0
info:
title: WritersLogic Verifiable AI Agent Hub Duplicate Key Audit 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: Duplicate Key Audit
paths:
/api/v1/duplicate-key-audit:
post:
operationId: duplicate_key_audit
summary: Duplicate JSON object keys found in raw text, before a parser drops them
description: 'Scans raw JSON text (RFC 8259) for repeated object member names at any depth, including inside arrays and keys spelled differently but equal after unescaping ("a" vs "\u0061"), and reports each with its JSON pointer, UTF-8 byte offset, line, column and the value every occurrence carried, plus whether the values conflict. Also reports a leading BOM, unpaired surrogates, __proto__ keys and the exact syntax error offset. For agents that must inspect JSON before JSON.parse, json.loads or a gateway silently keeps the last duplicate. It does not validate against a schema and does not repair the 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: developer
x-sample-url: https://agents.writerslogic.com/api/v1/samples/duplicate-key-audit
security:
- x402: []
- apiKey: []
requestBody:
required: true
content:
application/json:
schema:
type: object
additionalProperties: false
required:
- text
properties:
text:
type: string
maxLength: 200000
description: Raw JSON text, up to 200000 characters and 64 levels of nesting.
example:
text: '{"id": 1, "items": [{"sku": "a", "sku": "b"}], "id": 2}'
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.'
validSyntax:
type: boolean
description: True when the text is strict RFC 8259 JSON (a BOM makes the bytes non-conforming but is reported separately).
bom:
type: boolean
duplicateCount:
type: integer
duplicates:
type: array
items:
type: object
properties:
objectPath:
type: string
description: JSON pointer of the object holding the repeated key.
key:
type: string
path:
type: string
count:
type: integer
conflictingValues:
type: boolean
description: True when at least two occurrences carry different values; the key a last-wins parser keeps is the final occurrence.
occurrences:
type: array
items:
type: object
properties:
byteOffset:
type: integer
line:
type: integer
column:
type: integer
spelling:
type: string
description: The key exactly as written, with quotes and escapes.
value:
type: string
description: First 60 characters of the value as written.
keptByLastWins:
type: boolean
hazards:
type: array
items:
type: object
properties:
rule:
type: string
path:
type: string
byteOffset:
type: integer
detail:
type: string
syntaxError:
anyOf:
- type: object
properties:
byteOffset:
type: integer
line:
type: integer
column:
type: integer
message:
type: string
- type: 'null'
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:
- Duplicate Key Audit
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