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/api/market/fear-greed
GETAvailable

Fear & Greed index (current and history)

Fear & Greed index (current value and history)

GET/api/market/fear-greed

Request

This endpoint takes no parameters.

Example request

curl -s "https://www.coinboss.com/api/market/fear-greed"

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 }`.
nownumbermsServer time when the response was built.
latestobject—Most recent record.
latest.date_strstring—UTC date of the latest reading, `YYYY-MM-DD`.
latest.valuenumber—Value.
latest.class_strstring—Text label of the latest reading: `Extreme Fear`, `Fear`, `Neutral`, `Greed` or `Extreme Greed`.
latest.timestampnumbermsTimestamp.
historyarray—Historical points, oldest first unless stated.
history[]object—Historical points, oldest first unless stated.
history[].date_strstring—UTC date of the reading, `YYYY-MM-DD`.
history[].valuenumber—Value.
history[].class_strstring—Text label of that day's reading as published by the third-party source.
history[].timestampnumbermsTimestamp.

Generated 2026-11-11 23:01 UTC from 1 real responses.

Example response

/api/market/fear-greed · Real response captured 2026-11-13 04:03:35 UTC. Long arrays and maps are shortened for display: history had 30 items.

  • {
    • "success": true,
    • "now": 1794542346879,
    • "latest": {
      • "date_str": "2026-11-13",
      • "value": 20,
      • "class_str": "Extreme Fear",
      • "timestamp": 1794528000000
      },
    • "history": [
      • { … 4 },
      • { … 4 }
      ]
    }

Details

Authentication
None. Public endpoint.
Rate limit
1200 requests per minute per IP
Server cache
5m
Edge micro-cache
10s
Update frequency
polled about every 5 min; the index itself updates once per day
Window
latest value plus the most recent 30 daily values
Data sources
Crypto Fear & Greed Index published once a day by a third-party index provider.
Exchange coverage
Single market-wide series (third-party methodology, BTC-centric).
Sorting
date descending (newest first)
Units
index 0-100 with a text classification
Timestamps
Unix epoch milliseconds (UTC) unless the field description says otherwise
Response format
json
Stability
Stable

Live status

AvailableChecked 2026-11-13 04:03:35 UTCHTTP 2001 msSchema matchesNewest data point 4.1h old

Availability, last 30 days

100% of 409 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/market/fear-greedAvailable
Parameters

No parameters.

Request URLhttps://www.coinboss.com/api/market/fear-greed
Choose an endpoint and press “Send request”. The response, headers and timing will appear here.