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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

Sign in

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

Create an API key

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

Store as env var

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

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

Error codes

Free credits and sponsorship

You can use the same API key with all three options. See Sponsor options for access details. One-time Sponsor adds credits and keeps your current feature access and rate limits. Monthly Sponsor includes premium agent models, all skills, longer runs, and scheduled automations. Monthly Sponsor replaces the Free cycle allocation. It does not add another 500 credits. One-time credits stack separately. Cycle credits are spent first. Open Dashboard → Usage to view balances by source, expiry dates, and billing status. Select Manage or cancel subscription to change your payment method or cancel future renewals. Cancellation keeps your paid access until the current period ends. Your one-time balance remains. Failed renewal payments do not add credits for an unpaid period. Legacy Beta Passes keep their original 5,000 credits, 30-day expiry, and one-time payment terms. Start monthly sponsorship after your pass expires. Historical 1,500-credit packs keep their original amount and never expire. If you already received the current month’s Free allocation before the change, no extra credits are added mid-month. Your next calendar-month allocation is 500 credits. New purchases use cards, including Visa and Mastercard. Actual acceptance depends on your bank and Stripe. Alipay is unavailable for new purchases.

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.

Replace or revoke a key

To replace a key, create a new one in Dashboard → API Keys, update your environments, then revoke the old key. Requests that use a revoked key return 401.
Before revoking the old key, update LLMQUANT_API_KEY in every environment that uses MCP — your shell profile, your CI secrets, your team’s onboarding templates.