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GET
/
v1
/
assets
/
{asset_type}
/
{asset_symbol}
/
rates
curl
curl -X GET "https://api.services.payward.com/v1/assets/stablecoin/USDC/rates" \
  -H "API-Key: $PWS_API_KEY" \
  -H "API-Nonce: $PWS_API_NONCE" \
  -H "API-Sign: $PWS_API_SIGN"
{
  "data": [
    {
      "timestamp": "2026-04-21T00:00:00Z",
      "price": "64218.34"
    },
    {
      "timestamp": "2026-04-22T00:00:00Z",
      "price": "64902.11"
    },
    {
      "timestamp": "2026-04-23T00:00:00Z",
      "price": "65430.78"
    },
    {
      "timestamp": "2026-04-24T00:00:00Z",
      "price": "66120.05"
    },
    {
      "timestamp": "2026-04-25T00:00:00Z",
      "price": "66890.42"
    },
    {
      "timestamp": "2026-04-26T00:00:00Z",
      "price": "67234.18"
    }
  ],
  "quote_symbol": "USD",
  "quote_type": "fiat",
  "start_timestamp": "2026-04-21T00:00:00Z",
  "end_timestamp": "2026-04-26T23:59:59Z",
  "interval": "P1D",
  "page_size": 20,
  "next_page_token": null
}

Authorizations

​
API-Key
string
header
required

Your public API key. Identifies the partner making the request.

​
API-Nonce
string
header
required

Monotonically increasing nonce included in the request signature.

​
API-Sign
string
header
required

HMAC signature over the request, computed with your private key.

Path Parameters

​
asset_type
enum<string>
required

Classification of the asset (fiat, crypto, stablecoin, or xstock).

Available options:
fiat,
crypto,
stablecoin,
xstock
​
asset_symbol
string
required

Asset name (e.g., BTC, ETH, USD). Ticker symbol of an asset (e.g. BTC, USDC, EUR).

Required string length: 3 - 16
Example:

"BTC"

Query Parameters

​
quote_symbol
string
default:USD

Ticker symbol of the fiat quote asset to use for valuations (e.g. USD, EUR). Defaults to USD. Ticker symbol of an asset (e.g. BTC, USDC, EUR).

Required string length: 3 - 16
Example:

"BTC"

​
quote_type
enum<string>
default:fiat

Classification of the quote asset. Currently only fiat is supported.

Available options:
fiat
​
start_timestamp
string<date-time> | null

Start of the time window (inclusive). Only results whose timestamp is greater than or equal to start_timestamp are returned.

Example:

"2025-06-30T00:00:00.000Z"

​
end_timestamp
string<date-time> | null

End of the time window (exclusive). Only results whose timestamp is strictly less than end_timestamp are returned.

Example:

"2025-06-30T00:00:00.000Z"

​
interval
string<duration> | null

If provided, shows the history of the asset in the given interval.

Should be in the format of an [ISO 8601 duration].

Supported resolutions: 1min, 5min, 15min, 30min, 60min, 4H, 1D, 7D, 15D

Example:

"PT15M"

​
page_size
integer<int32>
default:20

Maximum number of results to return on a single page. Defaults to 20, maximum 100.

Required range: 1 <= x <= 100
​
page_token
string

Opaque page token returned by a previous response's next_page_token. Omit to start from the beginning.

Required string length: 1 - 256

Response

Response

​
data
object[]
required

List of historical records

​
quote_symbol
string
required

The asset used as the quote currency for all rates in data. Echoes the quote_symbol query parameter (or its default).

Maximum string length: 16
​
quote_type
enum<string>
required

Classification of the quote asset. Echoes the quote_type query parameter (or its default).

Available options:
fiat
​
start_timestamp
string<date-time>
required

Start of the time window covered by data. Echoes the start_timestamp query parameter (or its default).

​
end_timestamp
string<date-time>
required

End of the time window covered by data. Echoes the end_timestamp query parameter (or its default).

​
interval
string<duration> | null
required

Granularity of each row in data. Echoes the interval query parameter.

Example:

"PT15M"

​
page_size
integer<int32>
required

Maximum number of results returned on this page. Echoes the page_size query parameter (or its default).

Required range: 1 <= x <= 100
​
next_page_token
string

Opaque token for the next page of results. Absent when there are no more pages.

Required string length: 1 - 256