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Convert.Guru File Type Detection
x402
Convert.Guru File Type Detection is a paid API for AI agents from convert.guru, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).
Detects the file type of an uploaded file and returns format info, confidence score, and a list of compatible conversion targets
Price / call$0.002
Success—
StatusUnknown
How this service works
File type detection
Output
Returns a JSON object with: whether the file was detected successfully, the detected format (e.g. 'pdf'), a confidence score (0-1 and percent), a human-readable format description, the canonical file extension, a suggested renamed filename, a list of formats the file can be converted to, and a compatibility status (with reason and confidence) indicating how reliably the file can be converted.
Example use cases
Identify mystery file format
“Someone sent me a file with no extension and I have no idea what it is — can you figure out what type of file it is and whether I can do anything useful with it?”
Validate file before conversion
“I have a file that's supposed to be a Word document but I'm not confident it's actually in the right format — can you check what it really is and confirm whether it can be converted to PDF?”
Find available output formats
“I've got a CAD drawing I need to share with my team but I'm not sure what formats it can be exported to — can you detect what kind of file it is and list all the conversion options available?”
Technical details
Endpoint
POSThttps://convert.guru/api/x402/v1/detect-file-typeWhen to prefer
Use this endpoint when you need to identify an unknown file's format before attempting conversion, validate that a file matches its claimed extension, or determine which output formats are available for a given input file. Prefer this over guessing by file extension alone, especially for files with non-standard or missing extensions.
Side effects
- File bytes missing or malformed — detection fails with no format match
- File header too short (only first 200 bytes inspected) — may return 'likely' rather than confirmed status
- Unknown or unsupported file format — detected=false with empty convertible_to list
- Payment not settled — x402 payment required before result is returned
- File is corrupted or truncated — low confidence score returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| filename | string | Original filename, e.g. document.pdf, report.docx, data.csv, image.png |
| created_at | string | File creation timestamp in ISO 8601 format |
| size_bytes | integer | Total size of the file in bytes |
| header_first_200_bytes_base64 | string | Base64 encoded first 200 bytes of the file |
Output
Schema · Response
{
"type": "json",
"example": {
"payment": {
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"payTo": "0x222c4F009c63E24cE9176C0f7f3b64E7Da0f0699",
"amount": {
"amount": "0.002000",
"currency": "USDC",
"decimals": 6,
"atomic_units": "2000"
},
"scheme": "exact",
"network": "eip155:8453",
"tx_hash": "0x...",
"protocol": "x402",
"transaction_id": "0x...",
"settlement_status": "settled"
},
"detected": true,
"convertible_to": [
"docx",
"txt",
"png",
"jpg",
"html"
],
"input_filename": "document.001",
"detected_format": {
"format": "pdf",
"confidence": 0.99,
"description": "PDF document",
"confidence_percent": 99,
"canonical_extension": "pdf"
},
"suggested_filename": "document.pdf",
"convert_file_compatibility": {
"reason": "The header matches PDF, but only the first 200 bytes were inspected.",
"status": "likely",
"confidence": 0.8
}
}
}Tags
x402
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