Encodes a PaymentRequired, PaymentPayload or settlement response object as the b
Encodes a PaymentRequired, PaymentPayload or settlement response object as the base64 value of its x402 header, for hand-written servers, clients and tests, and reports the same problems /v1/decode finds.
Answeringour last check, 2026-10-25
1 of 1checks answered this week
488 msmedian answer time
$0.002listed price per call
$0.002price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://dev.kagurazaka.dev/v1/encode
| Category | Everything else |
|---|---|
| Provider host | dev.kagurazaka.dev |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-25 | valid payment request | 402 | $0.002 | 488 ms |
Example input (from the provider)
{
"body": {
"value": {
"network": "eip155:8453",
"payer": "0x5672C104c5A7F931843DD0b4Cc12BA0B525C7BCB",
"success": true,
"transaction": "0x5e1d3a1f7c8b9a0e2d4c6b8a0f1e3d5c7b9a1f3e5d7c9b1a3f5e7d9c1b3a5f7e",
"x402Version": 2
}
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"kind": {
"description": "default auto",
"enum": [
"payment-required",
"payment-signature",
"payment-response",
"auto"
],
"type": "string"
},
"value": {
"description": "the header's JSON object",
"type": "object"
}
},
"required": [
"value"
]
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"findings": {},
"header": {},
"header_name": {},
"kind": {}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}