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x402 Universal Payer for VS Code

io.github.nirholas/x402-bridge

Pay any x402 endpoint on the open web: auto-paying bridge with Bazaar discovery and spend caps.

client:VS Code transport:stdio runtime:npm

Install x402 Universal Payer in VS Code

.vscode/mcp.json

{
  "inputs": [
    {
      "type": "promptString",
      "id": "mcp-bridge-evm-private-key",
      "description": "MCP_BRIDGE_EVM_PRIVATE_KEY",
      "password": true
    },
    {
      "type": "promptString",
      "id": "mcp-bridge-svm-private-key",
      "description": "MCP_BRIDGE_SVM_PRIVATE_KEY",
      "password": true
    },
    {
      "type": "promptString",
      "id": "mcp-bridge-max-price-per-call-atomic",
      "description": "MCP_BRIDGE_MAX_PRICE_PER_CALL_ATOMIC",
      "password": true
    },
    {
      "type": "promptString",
      "id": "mcp-bridge-max-total-atomic",
      "description": "MCP_BRIDGE_MAX_TOTAL_ATOMIC",
      "password": true
    },
    {
      "type": "promptString",
      "id": "mcp-bridge-allowed-payto",
      "description": "MCP_BRIDGE_ALLOWED_PAYTO",
      "password": true
    },
    {
      "type": "promptString",
      "id": "mcp-bridge-allowed-hosts",
      "description": "MCP_BRIDGE_ALLOWED_HOSTS",
      "password": true
    },
    {
      "type": "promptString",
      "id": "mcp-bridge-allow-http",
      "description": "MCP_BRIDGE_ALLOW_HTTP",
      "password": true
    },
    {
      "type": "promptString",
      "id": "mcp-bridge-discover-limit",
      "description": "MCP_BRIDGE_DISCOVER_LIMIT",
      "password": true
    },
    {
      "type": "promptString",
      "id": "mcp-bridge-bazaar-url",
      "description": "MCP_BRIDGE_BAZAAR_URL",
      "password": true
    },
    {
      "type": "promptString",
      "id": "mcp-bridge-batch-deposit-multiplier",
      "description": "MCP_BRIDGE_BATCH_DEPOSIT_MULTIPLIER",
      "password": true
    },
    {
      "type": "promptString",
      "id": "mcp-bridge-max-deposit-atomic",
      "description": "MCP_BRIDGE_MAX_DEPOSIT_ATOMIC",
      "password": true
    },
    {
      "type": "promptString",
      "id": "x402-mcp-bridge-channels-dir",
      "description": "X402_MCP_BRIDGE_CHANNELS_DIR",
      "password": true
    },
    {
      "type": "promptString",
      "id": "rpc-url-8453",
      "description": "RPC_URL_8453",
      "password": true
    }
  ],
  "servers": {
    "x402-bridge": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@three-ws/mcp-bridge"
      ],
      "env": {
        "MCP_BRIDGE_EVM_PRIVATE_KEY": "${input:mcp-bridge-evm-private-key}",
        "MCP_BRIDGE_SVM_PRIVATE_KEY": "${input:mcp-bridge-svm-private-key}",
        "MCP_BRIDGE_MAX_PRICE_PER_CALL_ATOMIC": "${input:mcp-bridge-max-price-per-call-atomic}",
        "MCP_BRIDGE_MAX_TOTAL_ATOMIC": "${input:mcp-bridge-max-total-atomic}",
        "MCP_BRIDGE_ALLOWED_PAYTO": "${input:mcp-bridge-allowed-payto}",
        "MCP_BRIDGE_ALLOWED_HOSTS": "${input:mcp-bridge-allowed-hosts}",
        "MCP_BRIDGE_ALLOW_HTTP": "${input:mcp-bridge-allow-http}",
        "MCP_BRIDGE_DISCOVER_LIMIT": "${input:mcp-bridge-discover-limit}",
        "MCP_BRIDGE_BAZAAR_URL": "${input:mcp-bridge-bazaar-url}",
        "MCP_BRIDGE_BATCH_DEPOSIT_MULTIPLIER": "${input:mcp-bridge-batch-deposit-multiplier}",
        "MCP_BRIDGE_MAX_DEPOSIT_ATOMIC": "${input:mcp-bridge-max-deposit-atomic}",
        "X402_MCP_BRIDGE_CHANNELS_DIR": "${input:x402-mcp-bridge-channels-dir}",
        "RPC_URL_8453": "${input:rpc-url-8453}"
      }
    }
  }
}

VS Code prompts for each input the first time the server starts, so no secret is written to the file. VS Code docs

x402 Universal Payer in other clients