The Enum Canonicalize API from WritersLogic Verifiable AI Agent Hub — 1 operation(s) for enum canonicalize.
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openapi: 3.2.0
info:
title: WritersLogic Verifiable AI Agent Hub Enum Canonicalize 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: Enum Canonicalize
paths:
/api/v1/enum-canonicalize:
post:
operationId: enum_canonicalize
summary: Map free-text values onto a closed set of allowed values, or abstain
description: 'Maps each input string onto one member of a closed caller-supplied set using, in order: exact match, caller aliases, a deterministic normal form (Unicode NFKC, case and accent folding, punctuation and underscore collapse), then bounded edit distance (optimal string alignment, so a swapped pair of letters costs 1). Returns the canonical value, the method, the distance and the nearest candidates; it abstains (null) when nothing is within the threshold or when two allowed values tie, and it never guesses. For agents cleaning status, country, category or unit fields before writing them to a typed column. It does not translate, use synonyms beyond your aliases, or infer meaning.
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/enum-canonicalize
security:
- x402: []
- apiKey: []
requestBody:
required: true
content:
application/json:
schema:
type: object
additionalProperties: false
required:
- values
- allowed
properties:
values:
type: array
minItems: 1
maxItems: 200
items:
type: string
maxLength: 100
description: Strings to canonicalize.
allowed:
type: array
minItems: 1
maxItems: 500
items:
type: string
maxLength: 100
description: The closed set of canonical values.
aliases:
type: array
maxItems: 500
items:
type: object
additionalProperties: false
required:
- alias
- canonical
properties:
alias:
type: string
maxLength: 100
canonical:
type: string
maxLength: 100
description: Caller synonyms; each canonical must be in allowed.
maxDistance:
type: integer
minimum: 0
maximum: 5
description: Largest edit distance accepted (default 2). The effective limit is also capped at one third of the normalized input length.
caseSensitive:
type: boolean
description: Skip case, accent and punctuation folding (only NFKC and whitespace collapse). Default false.
example:
values:
- Unted States
- usa
- U.S. of America
- Atlantis
allowed:
- United States
- Canada
- Mexico
aliases:
- alias: usa
canonical: United States
- alias: u s of america
canonical: United States
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.'
results:
type: array
items:
type: object
properties:
index:
type: integer
input:
type: string
canonical:
anyOf:
- type: string
- type: 'null'
method:
type: string
enum:
- exact
- alias
- normalized
- fuzzy
- ambiguous
- no-match
distance:
anyOf:
- type: integer
- type: 'null'
threshold:
type: integer
description: Largest distance that would have been accepted for this input.
candidates:
type: array
items:
type: object
properties:
value:
type: string
distance:
type: integer
allowedCollisions:
type: array
items:
type: object
properties:
normalized:
type: string
values:
type: array
items:
type: string
description: Allowed values that share a normal form; inputs landing there are ambiguous.
counts:
type: object
properties:
resolved:
type: integer
ambiguous:
type: integer
noMatch:
type: integer
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:
- Enum Canonicalize
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