Jaccard set similarity API

Returns Jaccard similarity & distance with intersection/union sizes for two sets (deduplicated). Answers 'How similar are these two sets/tag lists?', 'What is the Jaccard index?'.

Price$0.01per request

MethodPOST

Route/v1/retrieval/jaccard-similarity

StatusLive

MIME typeapplication/json

Rate limit120/minute

Cache0s public

jaccardsetsimilarityoverlapintersectionunionretrievalrag

API URLhttps://x402.hexl.dev/v1/retrieval/jaccard-similarity

Integration docs

Example request

{
  "a": [
    "a",
    "b",
    "c"
  ],
  "b": [
    "b",
    "c",
    "d"
  ]
}

Example response

{
  "jaccardSimilarity": 0.5,
  "jaccardDistance": 0.5,
  "intersection": 2,
  "union": 4,
  "sizeA": 3,
  "sizeB": 3,
  "formula": "|A∩B| / |A∪B|"
}

Input schema

{
  "type": "object",
  "required": [
    "a",
    "b"
  ],
  "properties": {
    "a": {
      "type": "array"
    },
    "b": {
      "type": "array"
    }
  }
}

Output schema

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