US baby-name popularity trend API

Derives the decade-by-decade popularity trend of a US given name from an inlined SSA national rank snapshot (keyless, zero marginal cost): peak decade and rank, current rank, and a rising/falling/stable trajectory. Answers 'Is this name rising or falling?', 'When was this name most popular?', 'What is the popularity trend of this baby name by decade?'.

Price$0.01per request

MethodPOST

Route/v1/data/name-trend

StatusLive

MIME typeapplication/json

Rate limit60/minute

CacheNo cache

dataname-trendbaby-namesssapopularitygiven-nameonomasticstrend

API URLhttps://x402.hexl.dev/v1/data/name-trend

Integration docs

Example request

{
  "name": "Emma",
  "sex": "F"
}

Example response

{
  "found": true,
  "name": "emma",
  "sex": "F",
  "peakDecade": "2010",
  "peakRank": 1,
  "currentRank": 1,
  "trajectory": "stable",
  "series": [
    {
      "decade": "1950",
      "rank": 305
    },
    {
      "decade": "1960",
      "rank": 449
    },
    {
      "decade": "1970",
      "rank": null
    },
    {
      "decade": "1980",
      "rank": 421
    },
    {
      "decade": "1990",
      "rank": 56
    },
    {
      "decade": "2000",
      "rank": 4
    },
    {
      "decade": "2010",
      "rank": 1
    },
    {
      "decade": "2020",
      "rank": 1
    }
  ]
}

Input schema

{
  "type": "object",
  "required": [
    "name"
  ],
  "properties": {
    "name": {
      "type": "string",
      "minLength": 1,
      "examples": [
        "Emma"
      ]
    },
    "sex": {
      "type": "string",
      "enum": [
        "M",
        "F",
        "m",
        "f"
      ],
      "examples": [
        "F"
      ]
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}