IBM watsonx.ai Granite MCP Server

ai - chat, generation, embeddings, tokenization, forecasting, and model discovery, on your own IBM Cloud account. Its 6 documented tools cluster into watsonx, auth & access.

People connecting AI & ML tools to Claude, Cursor, VS Code, or another MCP client. The project is written in JavaScript.

One of 37 MCP servers published from nirholas/three.ws. Stars and repository activity are shared across all of them. See all 37 →

VERIFIED ACTIVE

LAST COMMIT 2026-08-24 · VERIFIED 2026-08-25

Apache-2.0 · JavaScript servers · how we verify → /methodology

01 · Install IBM watsonx.ai Granite

before you install - you'll need

Set WATSONX_API_KEY, WATSONX_PROJECT_ID before connecting.

Claude Code

claude mcp add nirholas-three.ws-packages-ibm-watsonx-m -- npx -y @three-ws/ibm-watsonx-mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "nirholas-three.ws-packages-ibm-watsonx-m": {
      "command": "npx",
      "args": [
        "-y",
        "@three-ws/ibm-watsonx-mcp"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license Apache-2.0 - declared in the repository

npm package @three-ws/ibm-watsonx-mcp - the @three-ws scope differs from the repo owner (nirholas); confirm it's the project's official package

registry namespace io.github.nirholas is GitHub-verified and matches the repo owner

03 · What IBM watsonx.ai Granite can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

What you can build

An agent gets 6 documented tools across watsonx, auth & access, including watsonx_chat, watsonx_generate, watsonx_embed, watsonx_tokenize.

Capability map

Tools grouped from the project's README - what IBM watsonx.ai Granite lets an agent do.

Watsonx

5 tools - e.g. Chat completion from a list of role/content messages. Returns the reply plus token usage.; Raw prompt completion with decoding control (greedy/sample, stop sequences).; Embedding vectors for one or more…

watsonx_chat · watsonx_generate · watsonx_embed · watsonx_forecast · watsonx_list_models

auth & access

1 tool - e.g. Token count (and optionally the tokens) for a text against a model tokenizer.

watsonx_tokenize

04 · Who maintains IBM watsonx.ai Granite

IBM watsonx.ai Granite is maintained by nirholas. We track 66 MCP servers from nirholas - 65 actively maintained, 7,658 combined GitHub stars, oldest repo from Feb 2024. Full record: all servers from nirholas.

05 · Facts

repository: github.com/nirholas/three.ws
website: https://three.ws/
category: AI & ML - actively maintained as of 2026-08-25.
registry: io.github.nirholas/ibm-watsonx (active, first published 2026-06-02 · 4 versions)
packages: npm:@three-ws/ibm-watsonx-mcp

06 · IBM watsonx.ai Granite FAQ

Is IBM watsonx.ai Granite still maintained?

Yes - as of 2026-08-25, its last commit was 2026-08-24. We re-verify nightly.

What can IBM watsonx.ai Granite do?

An agent gets 6 documented tools across watsonx, auth & access, including watsonx_chat, watsonx_generate, watsonx_embed, watsonx_tokenize.

How do I install IBM watsonx.ai Granite?

Run `npx -y @three-ws/ibm-watsonx-mcp`. The README documents 2 environment variables (WATSONX_API_KEY, WATSONX_PROJECT_ID) to set first. Set WATSONX_API_KEY, WATSONX_PROJECT_ID before connecting. You can also paste the ready-made client config above.

Does IBM watsonx.ai Granite run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to IBM watsonx.ai Granite

Alternatives to IBM watsonx.ai Granite

Maintained AI & ML servers if IBM watsonx.ai Granite isn't the fit.

Pairs well with

Servers that cover what IBM watsonx.ai Granite doesn't - only shown when the pairing reason fits the companion.

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