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/api/options/max-pain
GETAvailable

Options max pain

Options max pain (per expiry)

GET/api/options/max-pain
Single venue: computed from Deribit public option data only. `volume_usd`-type fields are premium-based where the venue reports premium turnover. For six venues with per-venue coverage use `/api/sd/options/overview`.

Request

Query parameters

NameTypeRequiredDefaultAllowed valuesDescription
currencystringOptionalBTCBTC, ETHUnderlying: `BTC` or `ETH`. Any other value returns 400 `INVALID_PARAM`. Alias: `coin`. Example: BTC
expirystringOptional——Expiry; default expiry when missing or invalid.

Example request

curl -s "https://www.coinboss.com/api/options/max-pain?currency=BTC"

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 }`.
currencystring—Currency / asset symbol.
index_pricenumber—Index price of the underlying.
expiriesarray—Option / futures expiries.
expiries[]object—Option / futures expiries.
expiries[].expirystring—Expiry date of the option series.
expiries[].max_painnumberUSDStrike at which option holders lose the most at expiry.
expiries[].call_oi_usdnumberUSDOpen interest of calls.
expiries[].put_oi_usdnumberUSDOpen interest of puts.
expiries[].total_oi_usdnumberUSDTotal open interest.
detailobject—Detail.
detail.expirystring—Expiry date of the option series.
detail.max_painnumberUSDStrike at which option holders lose the most at expiry.
detail.strikesarray—Option strikes.
detail.strikes[]object—Option strikes.
detail.strikes[].strikenumberUSDStrike price.
detail.strikes[].call_oinumbercoinOpen interest of Deribit calls at this strike for the `detail.expiry` date, in units of the underlying coin.
detail.strikes[].put_oinumbercoinOpen interest of Deribit puts at this strike for the `detail.expiry` date, in units of the underlying coin.

Generated 2026-11-11 23:00 UTC from 2 real responses.

Example response

/api/options/max-pain?currency=BTC · Real response captured 2026-11-13 03:58:24 UTC. Long arrays and maps are shortened for display: expiries had 12 items; detail.strikes had 60 items.

  • {
    • "success": true,
    • "currency": "BTC",
    • "index_price": 69009.96,
    • "expiries": [
      • { … 5 },
      • { … 5 }
      ],
    • "detail": {
      • "expiry": "2026-12-25",
      • "max_pain": 75000,
      • "strikes": [ … 2 ]
      }
    }

Verified samples

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

ParametersHTTPLatencyResult
currency=ETH2004 msPass
currency=SOL4001 msPass returns the expected error

Checked 2026-11-13 03:58:24 UTC

Details

Authentication
None. Public endpoint.
Rate limit
1200 requests per minute per IP
Server cache
5m
Edge micro-cache
10s
Update frequency
every 10 min (full snapshot replace)
Window
latest snapshot
Data sources
Max-pain strikes computed in-house from a single exchange's options open interest (Deribit).
Exchange coverage
Deribit only, BTC and ETH options; other venues (Binance/OKX/Bybit options, CME) are not included. Future expiries only.
Sorting
expiry ascending
Units
USD strike (max pain); USD notional (open interest); coins (per-strike detail)
Method
For each future expiry, max pain = strike S minimizing sum(call OI x max(S-K,0)) + sum(put OI x max(K-S,0)).
Timestamps
Unix epoch milliseconds (UTC) unless the field description says otherwise
Response format
json
Stability
Stable

Live status

AvailableChecked 2026-11-13 03:58:24 UTCHTTP 2004 msSchema matches

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/options/max-painAvailable
Parameters

string · default BTC — Underlying: `BTC` or `ETH`. Any other value returns 400 `INVALID_PARAM`. Alias: `coin`.

string — Expiry; default expiry when missing or invalid.

Request URLhttps://www.coinboss.com/api/options/max-pain?currency=BTC
Choose an endpoint and press “Send request”. The response, headers and timing will appear here.