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Code 128 Barcode SVG Generator
x402
Code 128 Barcode SVG Generator is a paid API for AI agents from barcode-qr.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-11-02).
Encodes ASCII text as a Code 128 barcode SVG with automatic subset A/B/C switching and mod-103 checksum computation.
Price / call$0.02
Success—
StatusUnknown
How this service works
Encode ASCII text as a Code 128 barcode SVG with automatic subset A/B/C switching and the mod-103 checksum.
Output
Returns a JSON object containing the SVG string of the rendered Code 128 barcode, the computed mod-103 checksum value, the sequence of subsets (A/B/C) used, the total number of modules, the number of symbols, an array of symbol values, the SVG file size in bytes, quiet zone module count, a summary string, and metadata such as the source and timestamp. May also include a verdict, degraded flag, disclaimer, and reasons array if any encoding decisions were noteworthy.
Example use cases
Shipping label barcode generation
“Create a Code 128 barcode SVG for the tracking number 'TRK-9948271-US' — I need it at scale 4 and 80 modules tall so it's easy to scan on a printed label.”
Inventory SKU barcode for product catalog
“Can you generate a Code 128 barcode SVG for the SKU 'WH-CHAIR-GRY-L'? Use default scale and height, I just need the standard barcode image to embed in our inventory sheet.”
Serial number barcode for asset tagging
“Make me a Code 128 barcode SVG encoding the serial number 'ASSET-00342' with scale 2 and bar height 50, so I can print it onto asset tags.”
Technical details
Endpoint
GEThttps://barcode-qr.x402tookit.com/code128-svg?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a standards-compliant Code 128 linear barcode SVG with automatic subset optimization (A/B/C switching) and a verified mod-103 checksum, especially for retail, logistics, or inventory use cases where Code 128 is the required symbology. Prefer this over QR code endpoints when a traditional 1D barcode is required, and over EAN/UPC endpoints when the data is not a numeric GTIN.
Side effects
- Text longer than 80 characters returns an error or truncated result
- Non-ASCII characters in the input cause encoding failure
- Scale outside 1–8 or height outside 10–200 returns a validation error
- Empty text parameter results in an error response
- Network or payment failure (402) if USDC balance is insufficient
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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