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 who work with watsonx and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in JavaScript.

One of 41 MCP servers published from nirholas/three.ws. Stars and repository activity are shared across all of them. See all 41 →

VERIFIED ACTIVE

LAST COMMIT 2026-09-30 · VERIFIED 2026-09-30

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

Latest releases

v1.5.2 · 2026-09-30

Everything three.ws shipped from 2026-08-29 to 2026-09-30, taken from the public changelog. 175 user-facing changes. · Try it at three.ws, read the docs, follow the full changelog (RSS), or connect your assistant to…

v1.0.0 · 2026-08-28

!three.ws · three.ws is an Android app. Install it and the platform opens full-screen, with no browser chrome around it, and every signature is routed to the wallet on your phone. · Install · 1. Open…

04 · Who maintains IBM watsonx.ai Granite

IBM watsonx.ai Granite is maintained by nirholas. We track 71 MCP servers from nirholas - 70 actively maintained, 7,910 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 2026-09-30.
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 2026-09-30, its last commit was 2026-09-30. 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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