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agent402.tools MIME Type Lookup
x402
agent402.tools MIME Type Lookup is a paid API for AI agents from agent402.tools, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Look up a MIME type by file extension or find file extensions for a given MIME type, covering ~50 common types.
Price / call$0.001
Success—
StatusUnknown
How this service works
Look up a MIME type by file extension (?ext=png) or extensions by MIME type (?type=image/png). Covers ~50 common types.
Output
Returns the MIME type string for a given file extension (e.g. 'image/png' for 'png'), or a list of file extensions associated with a given MIME type (e.g. ['.jpg', '.jpeg'] for 'image/jpeg'). Covers approximately 50 common file types.
Example use cases
Example prompt
“What's the MIME type for a .png file? Also, if I have the type image/jpeg, what file extensions go with it?”
Technical details
Endpoint
GEThttps://agent402.tools/api/mimeWhen to prefer
Use this endpoint when an agent needs to resolve a file extension to its canonical MIME/content-type string (e.g. to set HTTP Content-Type headers) or reverse-lookup which file extensions correspond to a given MIME type. Best suited for common file types; not appropriate for obscure or proprietary formats.
Side effects
- Unknown or unsupported extension/MIME type returns an empty result or 404
- Neither ext nor type query param provided results in an error response
- Malformed MIME type string may return no match
- Extension not in the ~50 supported types returns no result
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"ext": "pdf"
}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
{
"ext": "pdf",
"mime": "application/pdf"
}Schema · Response
{
"type": "json",
"example": {
"ext": "webp",
"mime": "image/webp"
}
}Tags
x402
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