24h Volume—Open Interest—24h Liquidations$1.36B24h Long/Short—BTC Dominance—ETH Dominance—
App
Language ▾
$ USD ▾
/api/p3/volatility/series
GETAvailable

Volatility history for one coin

Volatility history for one coin

GET/api/p3/volatility/series

Request

Query parameters

NameTypeRequiredDefaultAllowed valuesDescription
coinstringOptionalBTC—Base coin symbol (uppercase, e.g. BTC). Example: BTC
daysintegerOptional30≤ 700Look-back window in days. Example: 30

Example request

curl -s "https://www.coinboss.com/api/p3/volatility/series?coin=BTC&days=30"

Response fields

The field table is generated from real responses, so it lists exactly what the endpoint returns. Paths use a[] for array items and {*} for objects keyed by a dynamic name such as a coin or an exchange.

FieldTypeUnitDescription
successboolean—true when the request succeeded. On failure the body is `{ success: false, code, error, request_id }`.
coinstring—Coin symbol, upper case (for example BTC).
seriesarray—Time series.
series[]object—Time series.
series[].tsnumbermsTimestamp.
series[].vol_pctnumber%Intraday range of that day's daily candle: (high − low) ÷ open × 100.

Generated 2026-11-11 23:00 UTC from 4 real responses.

Example response

/api/p3/volatility/series?coin=BTC&days=30 · Real response captured 2026-11-13 04:02:31 UTC. Long arrays and maps are shortened for display: series had 31 items.

  • {
    • "success": true,
    • "coin": "BTC",
    • "series": [
      • { … 2 },
      • { … 2 }
      ]
    }

Verified samples

Besides the example above, the probe calls this endpoint with these parameters and checks the schema each time.

ParametersHTTPLatencyResult
coin=ETH&days=302007 msPass
coin=SOL&days=302007 msPass
coin=ARKM&days=302007 msPass

Checked 2026-11-13 03:57:34 UTC

Details

Authentication
None. Public endpoint.
Rate limit
1200 requests per minute per IP
Server cache
10m
Edge micro-cache
10s
Update frequency
daily bars; recomputed on request (10 min cache)
Window
last 30 days by default (`days` max 700)
Data sources
Daily price range series computed in-house from exchange USDT-perpetual daily klines.
Exchange coverage
Any coin with daily klines (default BTC).
Sorting
date ascending
Units
percent
Method
Daily range = (high - low) / open x 100.
Timestamps
Unix epoch milliseconds (UTC) unless the field description says otherwise
Response format
json
Stability
Stable

Live status

AvailableChecked 2026-11-13 03:57:34 UTCHTTP 2008 msSchema matchesNewest data point 4h old

Availability, last 30 days

100% of 412 checks passed

Errors

Failed calls share one shape on every endpoint. The full list is on the errors page. Errors and rate limits →

CodeHTTPMeaningWhat to do
INVALID_PARAM400A required parameter is missing or a value is not accepted. `param` names the parameter when it is known.Do not retry unchanged; fix the request.
UNAUTHORIZED401The `CB-API-KEY` header was sent but the key is unknown or revoked. Public data needs no key — drop the header or use a valid key.Do not retry unchanged.
FORBIDDEN403The route is not part of the public API (internal or account-only).Do not retry.
NOT_FOUND404Unknown route, or the requested coin / exchange / fund does not exist.Do not retry; check the path and identifiers against the catalog.
RATE_LIMITED429More requests than the per-minute limit. `Retry-After` gives the seconds to wait.Wait for `Retry-After`, then retry with backoff.
INTERNAL500Unexpected server error. The message is generic by design; quote `request_id` when reporting it.Retry once after a few seconds; report it with the request id if it persists.
UPSTREAM_FAILED503The data source behind this endpoint did not answer in time. No stale or substitute numbers are returned in its place.Retry with backoff; check the status page.
UNAVAILABLE501 / 503The dataset is temporarily not ready (cache warming) or the endpoint has no lawful public source yet.Retry later; the catalog marks endpoints that are unavailable by design.
REQUEST_FAILED200Some older endpoints answer HTTP 200 with `success: false`. Always check `success`, not only the HTTP status.Depends on the message; treat as a failed request.

Try it

GET/api/p3/volatility/seriesAvailable
Parameters

string · default BTC — Base coin symbol (uppercase, e.g. BTC).

integer · default 30 · max 700 — Look-back window in days.

Request URLhttps://www.coinboss.com/api/p3/volatility/series?coin=BTC&days=30
Choose an endpoint and press “Send request”. The response, headers and timing will appear here.