IBM Granite via x402

Name: IBM Granite via x402
Author: nirholas

Community

MCP server by nirholas · updated 4 days ago · ★ 241

Score 82

x402 pay-per-use IBM Granite AI: chat, code, embeddings, analysis, forecasting. Pay USDC per call. IBM Granite via x402 is a community project by nirholas, not verified by a company domain.

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Works withClaude Code Claude Desktop Cursor Codex Gemini CLI VS Code Windsurf Antigravity CLI

Maintenance

Last commit 4 days ago

Licence

Apache-2.0: permissive, fine for commercial use

Quality

Clear description, published package or server URL, 241 stars, original repository

Security

Runs a script automatically when the package is installed

What you need

Setting	Needed	What it is
`MCP_SVM_PAYMENT_ADDRESS`Environment variable	Required	Solana wallet address that receives USDC payments from tool callers (server operator's receiving wallet). Required to accept x402 payments.
`WATSONX_API_KEY`Environment variable, secret	Required	IBM Cloud API key used by the server to call watsonx.ai on behalf of end users. Create one at https://cloud.ibm.com/iam/apikeys.
`WATSONX_PROJECT_ID`Environment variable	Optional	watsonx.ai project id scoping all inference calls. Find it under your project → Manage → General → Project ID. Provide this or WATSONX_SPACE_ID.
`WATSONX_SPACE_ID`Environment variable	Optional	watsonx.ai deployment space id. Alternative to WATSONX_PROJECT_ID.
`WATSONX_URL`Environment variable	Optional	Regional watsonx.ai inference host. Defaults to https://us-south.ml.cloud.ibm.com. Other regions: eu-de, eu-gb, jp-tok, au-syd, ca-tor.
`WATSONX_MODEL_ID`Environment variable	Optional	Default chat/generation Granite model id. Defaults to ibm/granite-3-8b-instruct.
`WATSONX_EMBED_MODEL_ID`Environment variable	Optional	Default embedding model id. Defaults to ibm/granite-embedding-278m-multilingual.
`X402_FEE_PAYER_SOLANA`Environment variable	Optional	Solana account that sponsors transaction fees for x402 payments. Defaults to the three.ws fee payer.
`X402_FACILITATOR_URL`Environment variable	Optional	x402 facilitator endpoint for payment verification and settlement. Defaults to https://facilitator.payai.network.

From the publisher's entry in the official MCP Registry. Required settings are already in the install config below as placeholders.

Install IBM Granite via x402

Built from the published package, never by AI

claude mcp add ibm-granite-via-x402 -e MCP_SVM_PAYMENT_ADDRESS=YOUR_MCP_SVM_PAYMENT_ADDRESS -e WATSONX_API_KEY=YOUR_WATSONX_API_KEY -- npx -y @three-ws/ibm-x402-mcp

Run in your terminal. Add --scope user to use it in every project.

Step-by-step: install IBM Granite via x402 in Claude Code

{
  "mcpServers": {
    "ibm-granite-via-x402": {
      "command": "npx",
      "args": [
        "-y",
        "@three-ws/ibm-x402-mcp"
      ],
      "env": {
        "MCP_SVM_PAYMENT_ADDRESS": "YOUR_MCP_SVM_PAYMENT_ADDRESS",
        "WATSONX_API_KEY": "YOUR_WATSONX_API_KEY"
      }
    }
  }
}

Settings, Developer, Edit config. Paste into claude_desktop_config.json and restart.

Step-by-step: install IBM Granite via x402 in Claude Desktop

{
  "mcpServers": {
    "ibm-granite-via-x402": {
      "command": "npx",
      "args": [
        "-y",
        "@three-ws/ibm-x402-mcp"
      ],
      "env": {
        "MCP_SVM_PAYMENT_ADDRESS": "YOUR_MCP_SVM_PAYMENT_ADDRESS",
        "WATSONX_API_KEY": "YOUR_WATSONX_API_KEY"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (all projects) or .cursor/mcp.json (this project).

Step-by-step: install IBM Granite via x402 in Cursor

{
  "servers": {
    "ibm-granite-via-x402": {
      "command": "npx",
      "args": [
        "-y",
        "@three-ws/ibm-x402-mcp"
      ],
      "env": {
        "MCP_SVM_PAYMENT_ADDRESS": "YOUR_MCP_SVM_PAYMENT_ADDRESS",
        "WATSONX_API_KEY": "YOUR_WATSONX_API_KEY"
      }
    }
  }
}

Add to .vscode/mcp.json. VS Code uses "servers", not "mcpServers".

Step-by-step: install IBM Granite via x402 in VS Code

codex mcp add ibm-granite-via-x402 --env MCP_SVM_PAYMENT_ADDRESS=YOUR_MCP_SVM_PAYMENT_ADDRESS --env WATSONX_API_KEY=YOUR_WATSONX_API_KEY -- npx -y @three-ws/ibm-x402-mcp

Step-by-step: install IBM Granite via x402 in Codex

{
  "mcpServers": {
    "ibm-granite-via-x402": {
      "command": "npx",
      "args": [
        "-y",
        "@three-ws/ibm-x402-mcp"
      ],
      "env": {
        "MCP_SVM_PAYMENT_ADDRESS": "YOUR_MCP_SVM_PAYMENT_ADDRESS",
        "WATSONX_API_KEY": "YOUR_WATSONX_API_KEY"
      }
    }
  }
}

Add to ~/.gemini/config/mcp_config.json (all projects) or .agents/mcp_config.json (this project).

Step-by-step: install IBM Granite via x402 in Antigravity CLI

gemini mcp add ibm-granite-via-x402 npx -y @three-ws/ibm-x402-mcp

Gemini CLI was replaced by Antigravity CLI in June 2026 and remains only for enterprise licences and paid API keys.

Step-by-step: install IBM Granite via x402 in Gemini CLI

MCP servers run with your permissions and can read what you give them access to. Some need an API key: check the README and add it under env in the ibm-granite-via-x402 block.

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Security check

Runs a script automatically when the package is installedIn package.json: "postinstall":

Checked automatically: README.md, package.json. This looks for known risky patterns and is not a full audit. How grades work

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IBM Granite via x402: common questions

How do I install IBM Granite via x402?

In Claude Code run claude mcp add ibm-granite-via-x402 -e MCP_SVM_PAYMENT_ADDRESS=YOUR_MCP_SVM_PAYMENT_ADDRESS -e WATSONX_API_KEY=YOUR_WATSONX_API_KEY -- npx -y @three-ws/ibm-x402-mcp. For Claude Desktop, Cursor and VS Code, paste the config shown above and restart. See the install guides.

Is IBM Granite via x402 the official server?

IBM Granite via x402 is a community project by nirholas, not verified by a company domain.

Is IBM Granite via x402 free?

The code is published under the Apache-2.0 licence. The service it connects to may have its own pricing.

Is IBM Granite via x402 safe to use?

It scores 82 of 100. Grades: maintenance A, licence A, quality B. Security check: grade B (runs a script automatically when the package is installed). Review the code before you install. How grades work.

What are alternatives to IBM Granite via x402?

Similar MCP servers: Vexa, TradingMCP, Agent-Native Brain, Agent-Native Chat.

Does IBM Granite via x402 work with ChatGPT?

Not directly. It runs locally, and ChatGPT only connects to remote servers with a URL. Use it in Claude Code, Claude Desktop, Cursor, VS Code or Codex.