Summary
Generates barcodes in multiple formats including EAN-13, UPC-A, Code128, and Code39, returning them as SVG for easy integration into web apps or documents. The server runs remotely via SSE transport and uses the x402 micropayment system, so you'll need to handle payment integration. Reach for this when you need programmatic barcode generation without installing local dependencies or managing image libraries. The GitHub repo is minimal on documentation, but the API appears straightforward: request a barcode type and data, get back an SVG. Useful for e-commerce systems, inventory management, or any application that needs to generate scannable codes on the fly.
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Public tool metadata for what this MCP can expose to an agent.
1 tools
utility_generate_barcodeUse this when you need to generate a barcode from text or a number. Returns base64-encoded SVG image in JSON. Returns: 1. image (base64 SVG string) 2. format used (code128/code39/ean13/upca) 3. data4 params
Use this when you need to generate a barcode from text or a number. Returns base64-encoded SVG image in JSON. Returns: 1. image (base64 SVG string) 2. format used (code128/code39/ean13/upca) 3. data
Parameters* required
datastringData to encode in the barcode
formatstringBarcode format: code128, code39, ean13, upca (default: code128)
heightnumberBarcode height in pixels (default: 100)
widthnumberBar width in pixels (default: 2)
Barcode Generator API
Generate barcodes -- EAN-13, UPC-A, Code128, Code39. Base64 SVG output, custom width and height. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.
Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.
Quickstart -- MCP
Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):
{
"mcpServers": {
"barcode-generator": {
"url": "https://barcode-generator.api.klymax402.com/mcp"
}
}
}
Quickstart -- HTTP (x402)
curl -X POST "https://barcode-generator.api.klymax402.com/api/barcode" \
-H "Content-Type: application/json" \
-d '{"data":"..."}'
# -> 402 Payment Required, with an x402 payment challenge in the response body
Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.
Tools
| Tool | Method | Path | Price | Description |
|---|---|---|---|---|
utility_generate_barcode | POST | /api/barcode | $0.003 | Generate a barcode from text or number |
utility_generate_barcode
Use this when you need to generate a barcode from text or a number. Returns base64-encoded SVG image in JSON.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
data | string | yes | Data to encode in the barcode |
format | string | no | Barcode format: code128, code39, ean13, upca (default: code128) |
width | number | no | Bar width in pixels (default: 2) |
height | number | no | Barcode height in pixels (default: 100) |
Example response:
{"data":"5901234123457","format":"ean13","image":"PHN2ZyB4bWxu...","width":264,"height":142}
When to use: product labeling, inventory management, shipping labels, retail POS systems, and asset tracking barcodes.
Not for: QR codes (use utility_generate_qr_code), image resizing (use media_resize_image), PDF generation (use document_generate_pdf).
Example agent prompts
- "Generate a barcode from text or a number"
Payment
- Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
- Network: Base L2 (
eip155:8453) - Asset: USDC
- Facilitator: Coinbase CDP (primary), PayAI (fallback)
- Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)
Part of klymax402
100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.
- Catalog: https://klymax402.com/llms.txt
- Full API reference: https://klymax402.com/llms-full.txt
- Live stats: https://klymax402.com/stats
License
MIT
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Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
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