Longest common substring API

Finds the longest contiguous substring shared by two strings, with its length and start index in each input. Answers 'what is the longest matching run?', 'where does it occur in each string?'.

Price$0.02per request

MethodPOST

Route/v1/text/lcsubstring

StatusLive

MIME typeapplication/json

Rate limit120/minute

Cache0s public

textlcsubstringsubstringlongest-commonfuzzymatchingstringoverlap

API URLhttps://x402.hexl.dev/v1/text/lcsubstring

Integration docs

Example request

{
  "a": "abcdef",
  "b": "zabcz"
}

Example response

{
  "length": 3,
  "substring": "abc",
  "indexInA": 0,
  "indexInB": 1
}

Input schema

{
  "type": "object",
  "required": [
    "a",
    "b"
  ],
  "properties": {
    "a": {
      "type": "string",
      "examples": [
        "abcdef"
      ]
    },
    "b": {
      "type": "string",
      "examples": [
        "zabcz"
      ]
    }
  }
}

Output schema

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