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MIME Toolkit – File Type Lookup
x402
MIME Toolkit – File Type Lookup is a paid API for AI agents from mime.openverbs.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).
Returns the MIME type for a given filename, file path, or file extension
Price / call$0.002
Success—
StatusUnknown
How this service works
Resolve a filename, path or extension to its MIME type, charset and full Content-Type.
Output
The MIME type string (e.g. 'application/pdf', 'application/json', 'video/mp4') corresponding to the provided filename, path, or extension, allowing correct Content-Type assignment in HTTP responses, uploads, or file processing pipelines.
Example use cases
Set correct upload content type
“I'm about to upload a file named 'presentation.pptx' to my server — what MIME type should I send in the Content-Type header?”
Validate file type in pipeline
“I have a file called 'data_export.csv' going through my processing pipeline — can you look up its MIME type so I can route it correctly?”
Resolve MIME type from extension
“What's the MIME type for files with a .wasm extension? I need to serve them correctly from my web server.”
Technical details
Endpoint
POSThttps://mime.openverbs.com/v1/lookupWhen to prefer
Use this endpoint when you need a reliable, programmatic MIME type lookup from a filename or extension without bundling a local MIME database. Particularly useful in serverless or lightweight agent environments where installing mime-type libraries is impractical, or when centralizing content-type resolution across a multi-service architecture.
Side effects
- Unknown or unrecognized extension returns null or generic 'application/octet-stream'
- Empty or missing path field returns a validation error
- Path exceeding 4096 characters is rejected
- Ambiguous extensions with multiple possible types may return only the most common mapping
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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