Barcode Generator API

io.github.Br0ski777Published by GitHub account Br0ski777v1.1.0Updated Oct 24, 2026

Generate barcodes — EAN-13, UPC-A, Code128, Code39. Returns SVG. x402 micropayment.

VerifiedSSEWeb executableBusiness & CommerceMedia & Design

Overview

AI-generated overview

A remote MCP server that generates barcodes (EAN-13, UPC-A, Code128, Code39) as base64 SVG, paid per call via x402 USDC micropayments.

What you can do
Generate a barcode from text or a number in Code128, Code39, EAN-13 or UPC-A format, with optional bar width and height settings, and receive the result as a base64-encoded SVG image in JSON.
When to use it
Useful when an assistant needs to produce barcode images for product labeling, inventory management, shipping labels, retail POS or asset tracking, and the user is willing to pay a small per-call fee in USDC.
Requirements
A remote MCP endpoint (SSE transport) reachable over the network; no API key or signup. Payment requires an x402-aware client with a funded USDC wallet on Base L2, which handles the 402 challenge, signing and retry.
Before you install
Each call costs $0.003 in USDC on Base L2, so an assistant can spend real money; a wallet and signing capability are involved. The service is a third-party marketplace endpoint, and barcode data is sent to it. It does not generate QR codes, resize images or create PDFs.

Installation

In SourceWeft

  1. Open Barcode Generator API in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via SSE. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/io.github.Br0ski777%2Fbarcode-generator/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "barcode-generator-api": {
      "type": "sse",
      "url": "https://barcode-generator.api.klymax402.com/mcp"
    }
  }
}

README

Barcode Generator API

[MCP Server] [x402] [License: MIT]

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.):

json
{  "mcpServers": {    "barcode-generator": {      "url": "https://barcode-generator.api.klymax402.com/mcp"    }  }}

Quickstart -- HTTP (x402)

bash
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

ToolMethodPathPriceDescription
utility_generate_barcodePOST/api/barcode$0.003Generate 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

NameTypeRequiredDescription
datastringyesData to encode in the barcode
formatstringnoBarcode format: code128, code39, ean13, upca (default: code128)
widthnumbernoBar width in pixels (default: 2)
heightnumbernoBarcode height in pixels (default: 100)

Example response:

json
{"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.

License

MIT

Source: README.md at commit 12c7696

Tools

0
SourceWeft has not read this server's tools yet.

Version history

1
  1. v1.1.0LatestSep 16, 2026

Score

50% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts

    Keep the endpoint answering the MCP handshake; SourceWeft probes it every 30 days.

  • Auth declaredRequired10 pts

    Declare the credential headers in the registry entry, or keep the endpoint answering the probe so its auth can be classified.

  • Tools listed15 pts

    Answer tools/list without a credential, or ship a package that starts in a sandbox without one.

  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts