x402engine — Historical price, market cap, and volume data for any coin
x402engine — Historical price, market cap, and volume data for any coin
Answeringour last check, 2026-10-18
1 of 1checks answered this week
348 msmedian answer time
$0.003listed price per call
$0.003price 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
GET https://x402engine.app/api/crypto/history
| Category | Market data |
|---|---|
| Provider host | x402engine.app |
| Networks | eip155:4326, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-18 | valid payment request | 402 | $0.003 | 348 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"currency": "usd",
"days": "30",
"id": "bitcoin",
"interval": "daily"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"additionalProperties": false,
"properties": {
"currency": {
"default": "usd",
"description": "Fiat currency",
"example": "usd",
"type": "string"
},
"days": {
"default": "30",
"description": "Days of history (1-365 or \"max\")",
"example": "30",
"type": "string"
},
"id": {
"description": "Coin ID",
"example": "bitcoin",
"type": "string"
},
"interval": {
"description": "Data interval (daily)",
"example": "daily",
"type": "string"
}
},
"required": [
"id"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}