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CoinVoyage MCP — create crypto PayOrders, webhooks, swaps across Bitcoin/Solana/EVM chains.
About
CoinVoyage MCP — create crypto PayOrders, webhooks, swaps across Bitcoin/Solana/EVM chains.
Security Report
8.0
Low Risk8.0Low RiskValid MCP server (2 strong, 4 medium validity signals). 2 known CVEs in dependencies (0 critical, 2 high severity) Package registry verified. Imported from the Official MCP Registry.
4 files analyzed · 3 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
What You'll Need
Set these up before or after installing:
Your CoinVoyage public API key. Get one at https://dashboard.coinvoyage.io (Developers section).
Environment variable: COINVOYAGE_API_KEY
Server-side API secret. Required for SALE/REFUND PayOrders, fee claims, and webhook management. Leave unset if you only need DEPOSIT (merchant invoice) flows.Required
Environment variable: COINVOYAGE_API_SECRET
Override the API base URL. Defaults to https://api.coinvoyage.io.
Environment variable: COINVOYAGE_API_BASE_URL
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-kingpeque-coinvoyage": {
"env": {
"COINVOYAGE_API_KEY": "your-coinvoyage-api-key-here",
"COINVOYAGE_API_SECRET": "your-coinvoyage-api-secret-here",
"COINVOYAGE_API_BASE_URL": "your-coinvoyage-api-base-url-here"
},
"args": [
"-y",
"@kingpeque/coinvoyage-mcp"
],
"command": "npx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
coinvoyage-paykit-claudeplugin
Claude Code plugin for integrating CoinVoyage — a non-custodial, multi-chain crypto payment gateway — into any app you build with Claude.
Bundles two surfaces:
- Skill (
coinvoyage-payments) — triggers whenever Claude is helping with crypto payments, checkout, stablecoins, or web3 payment work. Guides the integration end to end: server-side PayOrder creation, ReactPaymentWidget, webhook signature verification, and REST API fallback for non-JS stacks. - MCP server (
@kingpeque/coinvoyage-mcp) — gives Claude 15 tools for calling the CoinVoyage API directly: create PayOrders, check status, manage webhooks, get swap quotes, and more.
Community-maintained integration. Not officially affiliated with CoinVoyage.
Install
/plugin install KingPeque/coinvoyage-paykit
You'll be prompted at install for:
| Field | Required | Notes |
|---|---|---|
api_key | yes | Your public API key from https://dashboard.coinvoyage.io → Developers |
api_secret | optional | Needed for SALE/REFUND orders, webhook management, and fee claims. Leave blank to restrict Claude to read + DEPOSIT flows only. |
api_base_url | optional | Defaults to https://api.coinvoyage.io |
The secret is stored in your system keychain via Claude Code's sensitive-config pathway — it never lands in a file you'd commit.
What you can now say to Claude
Once installed, these kinds of requests will activate the skill and/or MCP tools:
- "Add crypto payments to my Next.js checkout"
- "I want to accept Bitcoin on from my site"
- "Build a donation page that takes any crypto while I settle to USDC on base"
- "Create a $25 test invoice and settle to USDC on Base heres my wallet"
- "Register a webhook at https://mysite.com/api/webhooks/coinvoyage for completed orders"
What's inside
coinvoyage-paykit/
├── .claude-plugin/
│ └── plugin.json # Plugin manifest (prompts user for API keys)
├── mcp.json # Declares the bundled MCP server
├── skills/
│ └── coinvoyage-payments/
│ └── SKILL.md # Integration guide + trigger description
├── mcp-server/ # Source for @kingpeque/coinvoyage-mcp (npm)
│ ├── src/index.ts
│ ├── package.json
│ └── tsconfig.json
├── README.md
└── LICENSE
Supported chains
Bitcoin, Solana, Ethereum, Optimism, Arbitrum, Base, BSC, Polygon, Sui — plus any ERC-20 / SPL / native token on these chains. See full chain ID reference in the supported_chains MCP tool.
Pricing (CoinVoyage's, not this plugin's)
- 1.5% per successful payment
- 0% offramp
- Merchants can add a custom percentage fee on top
- This plugin is free and MIT-licensed. Volume discounts on CoinVoyage fees:
help@coinvoyage.io.
Security posture
- No secrets in this repo. Everything sensitive lives in your Claude Code config, injected into the MCP server at runtime.
- Per-user keys. Every builder uses their own CoinVoyage API key. Nothing is centrally hosted; there's no shared server to compromise.
- Minimal network surface. The MCP server only talks to
api.coinvoyage.io(or your configured override). - HMAC-SHA256 authentication for privileged operations (SALE/REFUND/webhooks/fee claims).
- Open source. Read the MCP server source at
mcp-server/src/index.ts— it's under 300 lines.
Local development
git clone https://github.com/KingPeque/coinvoyage-paykit
cd coinvoyage-paykit/mcp-server
npm install
npm run build
# Point your MCP client at ./mcp-server/dist/index.js with COINVOYAGE_API_KEY set
Run the skill locally by symlinking skills/coinvoyage-payments/ into ~/.claude/skills/ (or installing the plugin in dev mode).
Contributing
Issues and PRs welcome at https://github.com/KingPeque/coinvoyage-paykit/issues. Please don't commit API keys, secrets, or wallet addresses.
License
MIT — see LICENSE.
Links
- CoinVoyage site: https://coinvoyage.io
- CoinVoyage docs: https://docs.coinvoyage.io
- Dashboard: https://dashboard.coinvoyage.io
- Support:
help@coinvoyage.io - This plugin's issues: https://github.com/KingPeque/coinvoyage-paykit/issues
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