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/api/oi/chart
GETAvailable

Stacked OI chart series for one coin

Stacked OI chart series for one coin (per exchange)

GET/api/oi/chart

Request

Query parameters

NameTypeRequiredDefaultAllowed valuesDescription
coinstringOptionalBTC—Base coin symbol (uppercase, e.g. BTC). Example: BTC
hoursintegerOptional720≥ 24 · ≤ 2160Look-back window in hours. Example: 720

Example request

curl -s "https://www.coinboss.com/api/oi/chart?coin=BTC&hours=720"

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).
hoursnumber—Hourly values or number of hours.
exchangesarray—Exchanges.
exchanges[]string—Exchanges.
countnumber—Number of items.
dataarray—Payload.
data[]object—Payload.
data[].tsnumbermsTimestamp.
data[].total_usdnumberUSDTotal.
data[].byExchangeobject—Open interest per exchange at that hourly snapshot; keys are exchange ids, values are USD summed over the coin's contracts on that exchange.
data[].byExchange.backpacknumber—Value for exchange `backpack` (the key is the exchange id). may be absent
data[].byExchange.bitmexnumber—Value for exchange `bitmex` (the key is the exchange id). may be absent
data[].byExchange.deribitnumber—Value for exchange `deribit` (the key is the exchange id). may be absent
data[].byExchange.coinbasenumber—Value for exchange `coinbase` (the key is the exchange id). may be absent
data[].byExchange.cryptocomnumber—Value for exchange `cryptocom` (the key is the exchange id).
data[].byExchange.lighternumber—Value for exchange `lighter` (the key is the exchange id). may be absent
data[].byExchange.bitgetnumber—Value for exchange `bitget` (the key is the exchange id).
data[].byExchange.gatenumber—Value for exchange `gate` (the key is the exchange id).
data[].byExchange.bingxnumber—Value for exchange `bingx` (the key is the exchange id). may be absent
data[].byExchange.mexcnumber—Value for exchange `mexc` (the key is the exchange id).
data[].byExchange.asternumber—Value for exchange `aster` (the key is the exchange id).
data[].byExchange.krakennumber—Value for exchange `kraken` (the key is the exchange id).
data[].byExchange.coinexnumber—Value for exchange `coinex` (the key is the exchange id).
data[].byExchange.htxnumber—Value for exchange `htx` (the key is the exchange id). may be absent
data[].byExchange.kucoinnumber—Value for exchange `kucoin` (the key is the exchange id).
data[].byExchange.cmenumber—Value for exchange `cme` (the key is the exchange id). may be absent
data[].byExchange.binancenumber—Value for exchange `binance` (the key is the exchange id).
data[].byExchange.dydxnumber—Value for exchange `dydx` (the key is the exchange id).
data[].byExchange.bybitnumber—Value for exchange `bybit` (the key is the exchange id).
data[].byExchange.hyperliquidnumber—Value for exchange `hyperliquid` (the key is the exchange id). may be absent
data[].byExchange.okxnumber—Value for exchange `okx` (the key is the exchange id).
data[].byExchange.bitfinexnumber—Value for exchange `bitfinex` (the key is the exchange id). may be absent
data[].byExchange.edgexnumber—Value for exchange `edgex` (the key is the exchange id). may be absent
data[].byExchange.paradexnumber—Value for exchange `paradex` (the key is the exchange id). may be absent
data[].byExchange.whitebitnumber—Value for exchange `whitebit` (the key is the exchange id).
pricearray—Last price in the quote currency (USD or USDT unless stated).
price[]object—Last price in the quote currency (USD or USDT unless stated).
price[].tsnumbermsTimestamp.
price[].pricenumber—Last price in the quote currency (USD or USDT unless stated).

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

Example response

/api/oi/chart?coin=BTC&hours=720 · Real response captured 2026-11-13 03:57:40 UTC. Long arrays and maps are shortened for display: data had 720 items; price had 720 items; exchanges had 25 items.

  • {
    • "success": true,
    • "coin": "BTC",
    • "hours": 720,
    • "exchanges": [
      • "binance",
      • "okx",
      • "bybit",
      • "bitget",
      • "gate",
      • "htx",
      • "coinex",
      • "bitmex"
      ],
    • "count": 720,
    • "data": [
      • { … 3 },
      • { … 3 }
      ],
    • "price": [
      • { … 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&hours=72020073 msPass
coin=SOL&hours=72020073 msPass
coin=ARKM&hours=72020052 msPass

Checked 2026-11-13 03:57:40 UTC

Details

Authentication
None. Public endpoint.
Rate limit
1200 requests per minute per IP
Server cache
5m
Edge micro-cache
10s
Update frequency
hourly archive at each UTC hour change (snapshot of the latest table); ClickHouse copy synced every 5 min
Window
hours param, default 720 h, range 24..2160 h; hourly points
Data sources
Open interest polled by in-house collectors from the public REST APIs of 22 derivatives venues (e.g. binance, okx, bybit, gate, bitget, hyperliquid) plus CME's official daily volume/open-interest report.
Exchange coverage
exchanges present in the hourly archive for the coin; price line from binance futures klines (okx fallback)
Units
open interest in USD notional; price = 1 h kline close in USD; ts in Unix ms
Method
per hour and exchange: SUM(oi_usd) over all contract symbols of the coin; total_usd = sum over exchanges
Timestamps
Unix epoch milliseconds (UTC) unless the field description says otherwise
Response format
json
Stability
Stable

Live status

AvailableChecked 2026-11-13 03:57:40 UTCHTTP 20084 msSchema matchesNewest data point 58m old

Availability, last 30 days

100% of 410 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/oi/chartAvailable
Parameters

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

integer · default 720 · min 24 · max 2160 — Look-back window in hours.

Request URLhttps://www.coinboss.com/api/oi/chart?coin=BTC&hours=720
Choose an endpoint and press “Send request”. The response, headers and timing will appear here.