WritersLogic Verifiable AI Agent Hub Jwt Lint API
The Jwt Lint API from WritersLogic Verifiable AI Agent Hub — 1 operation(s) for jwt lint.
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curl "https://apis.io/api/v1/apis/writerslogic-com:writerslogic-com-jwt-lint-api"
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OpenAPI Specification
openapi: 3.2.0
info:
title: WritersLogic Verifiable AI Agent Hub Jwt Lint 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: Jwt Lint
paths:
/api/v1/jwt-lint:
post:
operationId: jwt_lint
summary: 'JWT lint: alg none, crit, key-URL headers, expiry, audience (decode only)'
description: 'Decodes a compact JWT (never verifies the signature) and checks it against RFC 7519 and RFC 8725 for an agent about to trust or forward it: alg none or missing, crit and key-supplying headers (jku, x5u, jwk), kid injection shape, duplicate claims, and exp, nbf, iat against a caller-supplied time, plus optional expected algorithms, issuer and audience. Without asOf the time claims are not judged and the status is unknown, never pass. A pass means no lint rule fired; it does not mean the token is authentic, and encrypted JWE tokens are unsupported.
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/jwt-lint
security:
- x402: []
- apiKey: []
requestBody:
required: true
content:
application/json:
schema:
type: object
additionalProperties: false
required:
- token
properties:
token:
type: string
maxLength: 8192
description: 'Compact JWS: header.payload.signature.'
asOf:
type: integer
minimum: 0
maximum: 100000000000
description: Reference instant, epoch seconds. Required to judge exp/nbf/iat.
leewaySeconds:
type: integer
minimum: 0
maximum: 3600
description: Clock-skew allowance, default 0.
expectedAlgs:
type: array
maxItems: 10
items:
type: string
maxLength: 20
description: Allow-list of algorithms; any other alg fails.
expectedIssuer:
type: string
maxLength: 500
expectedAudience:
type: string
maxLength: 500
requireExp:
type: boolean
description: 'Default true: a token without exp fails.'
example:
token: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ1MSIsImV4cCI6MTgwMDAwMDAwMH0.c2ln
asOf: 1700000000
expectedAlgs:
- HS256
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.'
alg:
type: string
timeChecked:
type: boolean
header:
description: Decoded JOSE header object.
payload:
description: Decoded claims set.
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:
- Jwt Lint
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