Authentication - LLMQuant Data

Generate keys in the Dashboard → API Keys.

Treat your API key like a password. Never commit it to source control, never expose it in client-side code, never paste it into a chat session.

Get your API key

Go to llmquantdata.com and sign up (or log in).

Generate a key

Open the Dashboard → API Keys → Generate. Copy it once — it won’t be shown again.

Store as env var

export LLMQUANT_API_KEY=your_api_key_here

Add it to your shell profile (~/.zshrc, ~/.bashrc) for persistence. Both MCP and HTTP usage below read from this single source.

How to use it

MCP runtime (recommended)
HTTP (direct)

Every supported MCP client (Claude Code, Cursor, Codex, Gemini CLI, Claude Desktop) reads the key from LLMQUANT_API_KEY. For JSON config files, paste the actual key value in the env block.See MCP Server setup for the per-client commands.

example: Cursor / Claude Desktop config snippet

{
  "mcpServers": {
    "llmquant-data": {
      "command": "npx",
      "args": ["-y", "@llmquant/data-mcp"],
      "env": {
        "LLMQUANT_API_KEY": "your_api_key_here"
      }
    }
  }
}

Pass the key in the Authorization header on every request:

curl "https://api.llmquantdata.com/api/equity/historical?ticker=AAPL&limit=5" \
  -H "Authorization: Bearer $LLMQUANT_API_KEY"

Error codes

Status	Meaning
200	Success
400	Bad request — invalid or missing parameters
401	Unauthorized — invalid or missing API key
402	Payment required — endpoint requires a paid plan
404	Not found — ticker or resource does not exist
429	Rate limit exceeded

Rate limits

Rate limits vary by plan. If you exceed your limit you will receive a 429 response. Contact us to discuss higher limits.

An MCP runtime that retries silently on 429 can burn credits fast. Inspect the agent’s tool-call log when debugging unexpected billing.

Rotate or revoke a key

Keys can be rotated or revoked from the Dashboard → API Keys. Revoking takes effect immediately; in-flight requests return 401.

After rotation, update LLMQUANT_API_KEY in every environment that uses MCP — your shell profile, your CI secrets, your team’s onboarding templates.

​Get your API key

​How to use it

​Error codes

​Rate limits

​Rotate or revoke a key

Get your API key

How to use it

Error codes

Rate limits

Rotate or revoke a key