The Schema Repair API from WritersLogic Verifiable AI Agent Hub — 1 operation(s) for schema repair.
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openapi: 3.2.0
info:
title: WritersLogic Verifiable AI Agent Hub Schema Repair 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: Schema Repair
paths:
/api/v1/schema-repair:
post:
operationId: schema_repair
summary: Repair a JSON value toward a schema using only the coercions the caller declares
description: 'Validates a JSON value against a caller-supplied JSON Schema 2020-12 and applies only the coercions you list (for example string-to-integer for "42", trim-strings, enum-case, apply-defaults, drop-additional) when each one strictly reduces the number of schema errors. Every change is returned with its JSON pointer, the rule, the old and new value; every error that remains is returned with its exact path and keyword. Refuses lossy coercions: "007" stays a string, "1,000" and "0x10" are not numbers, integers above 2^53 are not converted. For agents that must fix a model''s tool-call arguments without guessing. It never invents values: a missing required property without a schema default stays missing. It does not repair inside oneOf/anyOf branches.
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/schema-repair
security:
- x402: []
- apiKey: []
requestBody:
required: true
content:
application/json:
schema:
type: object
additionalProperties: false
required:
- schema
- value
- coercions
properties:
schema:
description: The schema the value must satisfy. Full JSON Schema 2020-12 (local $ref only).
value:
description: The JSON value to repair.
coercions:
type: array
minItems: 0
maxItems: 13
items:
type: string
enum:
- string-to-number
- string-to-integer
- string-to-boolean
- number-to-string
- boolean-to-string
- trim-strings
- enum-case
- empty-string-to-null
- null-to-default
- apply-defaults
- drop-additional
- wrap-in-array
- unwrap-single-element-array
description: Coercions you allow. Empty means validate only.
example:
schema:
type: object
required:
- id
- qty
properties:
id:
type: string
qty:
type: integer
minimum: 1
active:
type: boolean
additionalProperties: false
value:
id: '007'
qty: '3'
active: 'TRUE'
coercions:
- string-to-integer
- string-to-boolean
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.'
repaired:
description: The value after the declared coercions (equal to the input when nothing applied).
changed:
type: boolean
applied:
type: array
items:
type: object
properties:
path:
type: string
rule:
type: string
from:
description: Value before.
to:
description: Value after.
remaining:
type: array
items:
type: object
properties:
path:
type: string
keyword:
type: string
message:
type: string
schemaPath:
type: string
refused:
type: array
items:
type: object
properties:
path:
type: string
rule:
type: string
reason:
type: string
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:
- Schema Repair
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