usgs.earthquake_search

stable Advanced

Search earthquakes (FDSN query): minimum magnitude, newest first.

GET /v1/usgs/earthquake_search

What you get#

A list of Usgs results in Onekey's unified shape, in data (an array). An empty array is a normal, successful answer and is charged like any other; a source that reports "nothing found" as an error returns a free 404 not_found instead.

What it costs#

Advanced · 5 credits for a fresh fetch, charged only when it succeeds.
Free when served from cache (0.2 credit for a cached response over 100 KB).
Free if the request is invalid (never charged) or the source fails or reports not found (refunded).

Parameters#

Name	Type	Required	Default	What it is	Constraints
`limit`	string	no	`20`	Rows (1-200)	max 3 chars; must match `[1-9]\d?\|1\d\d\|200`; trimmed
`minmagnitude`	string	no	`4.5`	Minimum magnitude	max 3 chars; must match `\d(?:\.\d)?`; trimmed

Request#

curl "https://api.onekey.dev/v1/usgs/earthquake_search?limit=5&minmagnitude=5" \
  -H "x-api-key: YOUR_API_KEY"

Try it

Add your key to run this call right here. No key? Get one free. The key stays in this tab.

Recorded response#

A real Usgs response, recorded and returned in Onekey's shape. Fields the platform does not provide are null.

json

{
  "success": true,
  "data": [
    {
      "entity": {
        "id": "us6000ty57",
        "name": "M 5.4 - north of Svalbard",
        "description": "north of Svalbard",
        "url": "https://earthquake.usgs.gov/earthquakes/eventpage/us6000ty57",
        "date": "2026-09-28T13:22:39Z",
        "category": "reviewed"
      },
      "content": {
        "createdAt": "2026-09-28T15:29:02Z"
      },
      "ext": {
        "magnitude": 5.4,
        "magnitudeType": "mww",
        "significance": 449,
        "feltReports": null,
        "tsunami": false,
        "pagerAlert": "green",
        "depthKm": 10
      },
      "place": {
        "lat": 82.6385,
        "lon": -7.1923
      }
    },
    {
      "entity": {
        "id": "us6000ty43",
        "name": "M 5.2 - 190 km WSW of Port McNeill, Canada",
        "description": "190 km WSW of Port McNeill, Canada",
        "url": "https://earthquake.usgs.gov/earthquakes/eventpage/us6000ty43",
        "date": "2026-09-28T09:13:39Z",
        "category": "reviewed"
      },
      "content": {
        "createdAt": "2026-09-28T09:30:37Z"
      },
      "ext": {
        "magnitude": 5.2,
        "magnitudeType": "mww",
        "significance": 416,
        "feltReports": null,
        "tsunami": true,
        "pagerAlert": null,
        "depthKm": 10
      },
      "place": {
        "lat": 50.171,
        "lon": -129.6785
      }
    }
  ],
  "metadata": {
    "platform": "usgs",
    "endpoint": "earthquake_search",
    "cached": false,
    "stale": false,
    "age_s": 0,
    "fetched_at": "2026-01-01T12:00:00+00:00",
    "credits_charged": 5,
    "request_id": "7f3a9c2e5b1d4c8fa2e6d0b9c4f18e37"
  },
  "error": null
}

Field mapping#

How this endpoint's source fields become Onekey's unified schema. Fields the source lacks come back as null.

Source path	Onekey field	Transform
`id`	`entity.id`	-
`properties.title`	`entity.name`	-
`properties.place`	`entity.description`	-
`properties.url`	`entity.url`	`safeUrl`
`properties.time`	`entity.date`	`toIsoDate`
`properties.updated`	`content.createdAt`	`toIsoDate`
`properties.mag`	`ext.magnitude`	`toNumber`
`properties.magType`	`ext.magnitudeType`	-
`properties.sig`	`ext.significance`	`toNumber`
`properties.felt`	`ext.feltReports`	`toNumber`
`properties.tsunami`	`ext.tsunami`	`toBoolean`
`properties.alert`	`ext.pagerAlert`	-
`properties.status`	`entity.category`	-
`geometry.coordinates.1`	`place.lat`	`toNumber`
`geometry.coordinates.0`	`place.lon`	`toNumber`
`geometry.coordinates.2`	`ext.depthKm`	`toNumber`

Caching and freshness#

Fresh for about 2 minutes. Repeat calls in that window are served from cache and are free.
Between 2 minutes and 15 minutes the cached copy is still served instantly and marked stale: true while Onekey refreshes it in the background.
If the source is down when a refresh is needed, the last copy can be served for up to 1 hour more (marked stale).
A "not found" is remembered for 1 minute and is free.
The cache is shared across all customers, which is what keeps repeat calls cheap.

What can go wrong#

Status	Code	What to do
401	`unauthorized`	Check the `x-api-key` header.
402	`insufficient_credits`	Add credits; your balance must cover the price.
404	`not_found`	Unknown endpoint path.
422	`invalid_params`	Fix the parameters using the table above. Free.
429	`rate_limited`	Wait `Retry-After` seconds, then retry.
502	`upstream_error`	The source failed. Refunded; retry with backoff.

See Errors for the full list and retry guidance.

Status: stable (verified against the live source).