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Human Byte Sizes
x402
Human Byte Sizes is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).
Converts a raw byte count integer into a human-readable size string like '1.5 KB' or '2.3 MB'
Price / call$0.001
Success—
StatusUnknown
How this service works
Human-readable byte sizes. Call when presenting file sizes, cache usage, or download progress to users. Returns a human string like 1.5 KB from a byte count. $0.001 USDC per successful call via x402 on Base—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.
Output
A JSON object containing a human-readable string representation of the byte count, such as '1.5 KB', '3.2 MB', or '1.0 GB', suitable for direct display to end users.
Example use cases
File size display in upload UI
“I have a file that's 2097152 bytes — what should I show the user as a friendly file size?”
Cache usage reporting
“My cache is using 10737418240 bytes of space, can you convert that to a human-readable size for the dashboard?”
Download progress indicator
“The user has downloaded 524288 bytes so far — format that as a readable size like KB or MB to show in the progress bar.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/bytes-formatWhen to prefer
Choose this endpoint when you need a deterministic, consistent byte formatting result without shipping your own formatting logic, managing library dependencies, or dealing with locale inconsistencies. Ideal for agents building UI labels, logs, or reports where byte counts must be presented cleanly to humans. Preferred over rolling your own when you want first-party JSON output at low cost with no API key or subscription overhead.
Side effects
- Negative byte count returns a structured validation error (not billed)
- Non-integer or missing bytes field returns a validation error
- Extremely large integers beyond supported range may return an error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| bytes | integer | Byte count to format for humans (e.g. 1536 → 1.5 KB). |
Output
Schema · Response
{
"type": "json",
"example": {
"text": "1.5 KB",
"bytes": 1536,
"schema": "delx/bytes-format/v1"
}
}Tags
x402
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