The Translation Invariants API from WritersLogic Verifiable AI Agent Hub — 1 operation(s) for translation invariants.
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openapi: 3.2.0
info:
title: WritersLogic Verifiable AI Agent Hub Translation Invariants…
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: Translation Invariants
paths:
/api/v1/translation-invariants:
post:
operationId: translation_invariants
summary: Check that numbers, units, part numbers, tolerance signs, dates, placeholders…
description: 'For aligned source and target segments, extracts the tokens a translation must not change (numbers with attached units or %, ISO dates, part numbers and versions, tolerance and comparison operators such as ± ≤ ≥, placeholders like {0} or %s, URLs and emails) and reports any that are missing, added or altered, with offsets in both texts in UTF-16, code points, UTF-8 bytes and graphemes. Numbers are compared by value across decimal and thousands conventions (1,234.5 vs 1.234,5), digits of other scripts count as ASCII digits, and a separator that could be either is reported as ambiguous unless sourceDecimal/targetDecimal says which. Does not read number words, check grammar or translate; units are compared only when attached to the number or a symbol such as %.
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/translation-invariants
security:
- x402: []
- apiKey: []
requestBody:
required: true
content:
application/json:
schema:
type: object
additionalProperties: false
required:
- segments
properties:
segments:
type: array
items:
type: object
additionalProperties: false
properties:
id:
type: string
maxLength: 100
minLength: 1
description: Echoed back.
source:
type: string
maxLength: 10000
target:
type: string
maxLength: 10000
required:
- id
- source
- target
maxItems: 200
minItems: 1
description: Up to 200; 100000 characters in total.
sourceDecimal:
type: string
enum:
- .
- ','
- auto
description: Decimal mark of the source locale. Default auto (both readings tried).
targetDecimal:
type: string
enum:
- .
- ','
- auto
description: Decimal mark of the target locale. Default auto.
kinds:
type: array
items:
type: string
enum:
- number
- identifier
- operator
- placeholder
- url
- date
maxItems: 6
description: Token kinds to check. Default all.
example:
segments:
- id: s1
source: Tighten to 25 Nm ±2 (part PN-4471-B), see https://x.example/a.
target: Mit 25 Nm anziehen (Teil PN-4471-B), siehe https://x.example/a.
targetDecimal: ','
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.'
segments:
type: array
items:
type: object
additionalProperties: false
properties:
id:
type: string
ok:
type: boolean
missing:
type: array
items:
type: object
additionalProperties: false
properties:
kind:
type: string
enum:
- number
- identifier
- operator
- placeholder
- url
- date
text:
type: string
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: 50
description: In the source, absent from the target.
added:
type: array
items:
type: object
additionalProperties: false
properties:
kind:
type: string
enum:
- number
- identifier
- operator
- placeholder
- url
- date
text:
type: string
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: 50
description: In the target, absent from the source.
ambiguous:
type: array
items:
type: object
additionalProperties: false
properties:
source:
type: string
target:
type: string
sourceSpan:
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
targetSpan:
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: 50
description: Matched only because a separator can be read as decimal or thousands.
maxItems: 200
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:
- Translation Invariants
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