Deterministic nanoid API

Generates a reproducible nanoid from a seed, custom alphabet, and size using a seeded mulberry32 PRNG. The value-add: stable URL-safe IDs for snapshot tests (unlike random nanoid). Answers 'How do I make a deterministic nanoid?', 'Give me a reproducible short ID from a seed.'.

Price$0.01per request

MethodPOST

Route/v1/generate/nanoid

StatusLive

MIME typeapplication/json

Rate limit120/minute

Cache0s public

nanoiddeterministicseedidurl-safeprngalphabetgenerate

API URLhttps://x402.hexl.dev/v1/generate/nanoid

Integration docs

Example request

{
  "seed": "abc",
  "size": 10
}

Example response

{
  "id": "hqA5ue5nuY",
  "size": 10,
  "alphabetSize": 64,
  "seed": "abc",
  "deterministic": true,
  "interpretation": "Reproducible nanoid; same seed+alphabet+size always yields hqA5ue5nuY."
}

Input schema

{
  "type": "object",
  "required": [
    "seed"
  ],
  "properties": {
    "seed": {
      "type": [
        "string",
        "number"
      ],
      "examples": [
        "abc"
      ]
    },
    "size": {
      "type": "integer",
      "minimum": 1,
      "maximum": 255,
      "examples": [
        10,
        21
      ]
    },
    "alphabet": {
      "type": "string",
      "examples": [
        "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_-"
      ]
    }
  }
}

Output schema

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