JWT Decoder
JWT decoder: decode a JSON Web Token without verifying it: returns the header, the claims, the signature length and algorithm, and a computed view of the time claims — whether exp has passed, whether nbf is in the future, and the remaining lifetime in seconds against a supplied or current instant. Reports structural problems such as a missing part, invalid base64url or an alg of none. It does not and cannot verify the signature; do not use it to decide trust.
Offering
- Provider
- api.duoleads.com
- Method
- GET
- Offering type
- Api Endpoint
- Transport type
- http
- Category
- Security
- Delivery
- Not provided
- Pricing model
- Not provided
- x402 version
- 2
Endpoint context
- URL
https://api.duoleads.com/v1/code/jwt- MIME type
- application/json
- First seen
- 2026-10-16T01:50:38.788Z
- Last seen
- Tags
- JWT, jwt-decoder, json-web-token, Security, code
Payment pricing
x402 payment terms are the authoritative price for calling this endpoint.
- Payment option 1
- 0.05 USDC
Atomic price: 50000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
{
"scheme": "exact",
"network": "eip155:8453",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "50000",
"payTo": "0xCD673f7e1daD254347AEab6be0DEFe8b9C6b3A39"
}
]Observed health
- Status
- Healthy
- Latest latency
- 72 ms
- Average latency
- 661 ms
- HTTP status
- 402
- Last checked
- Reachability
- 100% over 13 checks
Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.
Input schema
{
"type": "object",
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"type": "string",
"enum": [
"GET"
]
},
"queryParams": {
"type": "object",
"properties": {
"token": {
"type": "string",
"description": "The JWT to decode (not verified). At most 8192 characters.",
"maxLength": 8192
},
"at": {
"type": "string",
"description": "Instant to evaluate exp/nbf against: RFC 3339 or epoch seconds. Default now.",
"maxLength": 64
}
},
"required": [
"token"
]
}
},
"required": [
"type",
"method"
],
"additionalProperties": false
}Output schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"at": {
"description": "Instant to evaluate exp/nbf against: RFC 3339 or epoch seconds. Default now.",
"maxLength": 64,
"type": "string"
},
"token": {
"description": "The JWT to decode (not verified). At most 8192 characters.",
"maxLength": 8192,
"type": "string"
}
},
"required": [
"token"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"data": {
"properties": {
"alg": {
"type": [
"string",
"null"
]
},
"claim_errors": {
"items": {
"properties": {
"claim": {
"type": "string"
},
"reason": {
"type": "string"
}
},
"required": [
"claim",
"reason"
],
"type": "object"
},
"type": "array"
},
"claims": {
"properties": {
"aud": {
"description": "RFC 7519 4.1.3: string or array of strings; null when absent",
"items": {
"type": "string"
},
"type": [
"string",
"array",
"null"
]
},
"exp": {
"type": [
"number",
"null"
]
},
"iat": {
"type": [
"number",
"null"
]
},
"iss": {
"type": [
"string",
"null"
]
},
"jti": {
"type": [
"string",
"null"
]
},
"nbf": {
"type": [
"number",
"null"
]
},
"sub": {
"type": [
"string",
"null"
]
}
},
"required": [
"iss",
"sub",
"aud",
"exp",
"nbf",
"iat",
"jti"
],
"type": "object"
},
"header": {
"description": "caller-supplied content echoed exactly as decoded: members are not typed",
"type": [
"object",
"null"
]
},
"kid": {
"type": [
"string",
"null"
]
},
"parts": {
"type": "integer"
},
"payload": {
"description": "caller-supplied content echoed exactly as decoded: members are not typed",
"type": [
"object",
"null"
]
},
"reason": {
"type": [
"string",
"null"
]
},
"signature_bytes": {
"type": "integer"
},
"signature_verified": {
"type": "boolean"
},
"time": {
"properties": {
"age_seconds": {
"type": [
"integer",
"null"
]
},
"evaluated_at": {
"type": "string"
},
"expired": {
"type": [
"boolean",
"null"
]
},
"expires_in_seconds": {
"type": [
"integer",
"null"
]
},
"not_yet_valid": {
"type": [
"boolean",
"null"
]
}
},
"required": [
"evaluated_at",
"expired",
"not_yet_valid",
"expires_in_seconds",
"age_seconds"
],
"type": "object"
},
"typ": {
"type": [
"string",
"null"
]
},
"valid_structure": {
"type": "boolean"
},
"warnings": {
"items": {
"type": "string"
},
"type": "array"
}
},
"required": [
"valid_structure",
"header",
"payload",
"alg",
"typ",
"kid",
"signature_bytes",
"parts",
"claims",
"time",
"signature_verified",
"warnings",
"reason"
],
"type": "object"
},
"meta": {
"properties": {
"computed_at": {
"description": "RFC 3339 UTC with milliseconds",
"type": "string"
},
"deterministic": {
"type": "boolean"
},
"disclaimer": {
"type": "string"
},
"price_usd": {
"type": "string"
},
"request_id": {
"type": "string"
},
"sources": {
"items": {
"required": [
"id",
"version",
"published"
],
"type": "object"
},
"type": "array"
}
},
"required": [
"request_id",
"computed_at",
"price_usd",
"deterministic",
"disclaimer"
],
"type": "object"
},
"ok": {
"const": true
},
"route": {
"const": "/v1/code/jwt"
},
"version": {
"type": "string"
}
},
"required": [
"ok",
"route",
"version",
"data",
"meta"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}