ZettaQuant V-SLM

zettaquant-vslm-mcp

MCP server that exposes ZettaQuant V-SLM to any MCP-aware LLM host.

Add three lines to your Claude Desktop / Cursor / Zed / Windsurf config and your model can filter noisy context (earnings-call transcripts, news articles, long reports, log lines) using ZettaQuant's topic-conditioned relevancy classifier — typically cutting token spend before the language model even sees the input.

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What it exposes

One tool, over stdio, via the Model Context Protocol:

Tool	Purpose
vslm_predict(sentences, query)	Filter sentences to only those relevant to query. Returns relevant_sentences plus stats. Uses the broad-domain V-SLM general_context_agent under the hood.

The LLM decides when to call it on its own — no code you have to write in the host.

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Install & configure

You need a ZettaQuant API key with the vslm scope. Get one at zettaquant.ai (or ask your account contact).

Claude Desktop

Edit ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows):

{
  "mcpServers": {
    "zettaquant-vslm": {
      "command": "uvx",
      "args": ["zettaquant-vslm-mcp"],
      "env": {
        "ZQ_API_KEY": "<your api key>"
      }
    }
  }
}

Restart Claude Desktop. The tools appear under the "Tools" menu.

Cursor

Edit ~/.cursor/mcp.json:

{
  "mcpServers": {
    "zettaquant-vslm": {
      "command": "uvx",
      "args": ["zettaquant-vslm-mcp"],
      "env": { "ZQ_API_KEY": "<your api key>" }
    }
  }
}

Restart Cursor.

Zed

In ~/.config/zed/settings.json:

{
  "context_servers": {
    "zettaquant-vslm": {
      "command": {
        "path": "uvx",
        "args": ["zettaquant-vslm-mcp"],
        "env": { "ZQ_API_KEY": "<your api key>" }
      }
    }
  }
}

Windsurf / other MCP hosts

Any host that supports the standard mcpServers config shape works — use the same command + args + env block as above.

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Environment variables

Variable	Required	Default	Notes
ZQ_API_KEY	Yes	—	Your ZettaQuant API key. Must have the vslm scope.
ZQ_BASE_URL		https://api.zettaquant.ai	Override for staging or a private gateway.

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Usage examples in the LLM

Once installed, just ask naturally. Some prompts that will trigger vslm_predict:

• "Here are 40 sentences from Apple's Q3 earnings call. Pull out the ones about AI capex plans."
• "Filter these log lines down to anything related to lateral movement."
• "I pasted a 10-K risk section. Only show me sentences about supply-chain exposure."

The model calls vslm_predict under the hood, gets back the relevant sentences, and works from those — cheaper and more precise than reading the full input.

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Development

uv venv
uv pip install -e .
export ZQ_API_KEY="..."
python -m zettaquant_vslm_mcp

The server speaks JSON-RPC on stdin/stdout. To poke it manually, use the MCP Inspector:

npx @modelcontextprotocol/inspector uvx zettaquant-vslm-mcp

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Troubleshooting

• "ZQ_API_KEY is not set" in the host logs → the env block in your MCP config didn't propagate. Confirm the config file path and restart the host.
• 401 in tool output → key is valid but wrong. Try it directly: curl -H "x-api-key: $ZQ_API_KEY" https://api.zettaquant.ai/v1/usage/me.
• ZettaQuant access denied (403) → your key doesn't have the vslm scope. Contact ZettaQuant.
• ZettaQuant quota exceeded (429) → you hit your per-period cap; the error message includes the reset time.

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License

MIT.