Reference

MIME type / extension cross-walk API

Look up by file extension ('.pdf') or MIME type ('application/pdf') and get the canonical MIME, extensions, a coarse category, whether the format is binary vs text, and common aliases — the bidirectional cross-walk agents need for content-type handling. Answers 'MIME type for .png', 'extension for application/json', 'is image/jpeg binary', 'category of text/csv'.

Price$0.01per request

MethodPOST

Route/v1/ref/mime

StatusLive

MIME typeapplication/json

Rate limit60/minute

CacheNo cache

refmimemedia-typecontent-typeextensionfile-typeianabinary

API URLhttps://x402.hexl.dev/v1/ref/mime

Integration docs

Example request

{
  "query": ".png"
}

Example response

{
  "query": ".png",
  "found": true,
  "mime": "image/png",
  "extensions": [
    "png"
  ],
  "category": "image",
  "binary": true,
  "aliases": []
}

Input schema

{
  "type": "object",
  "required": [
    "query"
  ],
  "properties": {
    "query": {
      "type": "string",
      "examples": [
        ".png",
        "application/json"
      ]
    }
  }
}

Output schema

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