50+ pay-per-call APIs for AI agents — images, LLM, code, crypto, travel & more via x402
npx -y x402engine-mcp{
"X402_BASE_URL": "YOUR_VALUE_HERE",
"X402_DEV_BYPASS": "YOUR_SECRET_VALUE",
"X402_PAYMENT_HEADER": "YOUR_SECRET_VALUE"
}Add this server entry to the mcpServers object in your Claude Desktop config, then restart the app.
{
"mcpServers": {
"io-github-agentc22-x402engine-mcp": {
"command": "npx",
"args": [
"-y",
"x402engine-mcp"
],
"env": {
"X402_BASE_URL": "YOUR_VALUE_HERE",
"X402_DEV_BYPASS": "YOUR_SECRET_VALUE",
"X402_PAYMENT_HEADER": "YOUR_SECRET_VALUE"
}
}
}
}~/Library/Application Support/Claude/claude_desktop_config.json%APPDATA%\Claude\claude_desktop_config.jsonNo remote HTTP endpoint is advertised. Use the package or stdio setup shown in Install.
x402engine-mcp is an MCP server for 50+ pay-per-call APIs for AI agents — images, LLM, code, crypto, travel & more via x402. It supports STDIO transport.
Use the generated config in Install. This server runs with npx -y x402engine-mcp; add any required environment variables before starting your client.
Choose the Claude Desktop tab in Install and copy the config for npx -y x402engine-mcp. Add required environment variables before starting Claude Desktop.
Choose the Claude Code tab in Install and copy the config for npx -y x402engine-mcp. Add required environment variables before starting Claude Code.
Choose the Codex tab in Install and copy the config for npx -y x402engine-mcp. Add required environment variables before starting Codex.
Choose the Cursor or VS Code tab in Install and copy the config for npx -y x402engine-mcp. Add required environment variables before starting Cursor or VS Code.
x402engine-mcp uses STDIO transport. Use the package or command config in Install.
x402engine-mcp inventory is listed when the MCP endpoint exposes tools, resources, or prompts. Some servers require auth first.
x402engine-mcp does not advertise a verified auth requirement. If discovery fails, it may still need provider login, an API key, a bearer token, or a session header.
| Package | Registry | Version | Inputs |
|---|---|---|---|
x402engine-mcpstdio | npm | 1.0.3 | Env: X402_BASE_URL Env: X402_DEV_BYPASS secret Env: X402_PAYMENT_HEADER secret |