Is the QR Code Generator API MCP server free to use?

Yes. QR Code Generator API is listed on AllMCPs as a free, open Model Context Protocol server you can install into Claude Desktop, Cursor, or any MCP-compatible client.

Is the QR Code Generator API MCP server free to use?

Yes. QR Code Generator API is listed on AllMCPs as a free, open Model Context Protocol server you can install into Claude Desktop, Cursor, or any MCP-compatible client.

QR Code Generator API

Generate QR codes from text or URLs. Returns base64 PNG. x402 micropayment.

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to Cursor Add to VS Code

Manual Client & Custom JSON ConfigExpand JSON ▾

Install Config Generator

Choose your client

claude_desktop_config.json

{
  "mcpServers": {
    "qr-code-generator-api": {
      "command": "npx",
      "args": [
        "-y",
        "qr-code-generator-api"
      ]
    }
  }
}

💡 Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows)

Documentation Overview

QR Code Generator API

Generate QR codes from text or URLs -- base64 PNG output, configurable size. Fast and lightweight. 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.):

config.json

{
  "mcpServers": {
    "qr-code": {
      "url": "https://qr-code.api.klymax402.com/mcp"
    }
  }
}

Quickstart -- HTTP (x402)

Terminal

curl -X POST "https://qr-code.api.klymax402.com/api/qr" \
  -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_qr_code`	POST	`/api/qr`	$0.003	Generate a QR code image from text or URL

`utility_generate_qr_code`

Use this when you need to generate a QR code from text, a URL, or any string data. Returns base64 image data in JSON.

Parameters

Name	Type	Required	Description
`data`	string	yes	The text or URL to encode in the QR code
`size`	number	no	QR code size in modules (default: 21 for version 1)

Example response:

config.json

{"data":"https://example.com","image":"iVBORw0KGgo...","width":210,"height":210,"format":"png"}

When to use: generating shareable links, payment QR codes, Wi-Fi connection codes, vCard contact sharing, and event ticket barcodes.

Not for: screenshots (use capture_screenshot), PDFs (use document_generate_pdf).

Example agent prompts

"Generate a QR code from text, a URL, or any string data"

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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Frequently Asked Questions about QR Code Generator API

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "qr-code-generator-api": { "command": "npx", "args": ["-y", "QR Code Generator API"] } }

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Technical Specs & Signals

CategoryFinance & Fintech

27Quality signal: Emerging · 27/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership8/20

Documentation & tools11/30

Adoption & activity1/15

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Documentation Overview

QR Code Generator API

Generate QR codes from text or URLs -- base64 PNG output, configurable size. Fast and lightweight. 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.):

config.json

{
  "mcpServers": {
    "qr-code": {
      "url": "https://qr-code.api.klymax402.com/mcp"
    }
  }
}

Quickstart -- HTTP (x402)

Terminal

curl -X POST "https://qr-code.api.klymax402.com/api/qr" \
  -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_qr_code`	POST	`/api/qr`	$0.003	Generate a QR code image from text or URL

`utility_generate_qr_code`

Use this when you need to generate a QR code from text, a URL, or any string data. Returns base64 image data in JSON.

Parameters

Name	Type	Required	Description
`data`	string	yes	The text or URL to encode in the QR code
`size`	number	no	QR code size in modules (default: 21 for version 1)

Example response:

config.json

{"data":"https://example.com","image":"iVBORw0KGgo...","width":210,"height":210,"format":"png"}

When to use: generating shareable links, payment QR codes, Wi-Fi connection codes, vCard contact sharing, and event ticket barcodes.

Not for: screenshots (use capture_screenshot), PDFs (use document_generate_pdf).

Example agent prompts

"Generate a QR code from text, a URL, or any string data"

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

Frequently Asked Questions about QR Code Generator API

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "qr-code-generator-api": { "command": "npx", "args": ["-y", "QR Code Generator API"] } }