Send Authorization: Bearer … on protected machine routes. Protect this key and review the privacy policy before sending personal or confidential data.
Self-service API access. Create and revoke keys from the API Keys section of Webmaster Tools.
A successful response includes X-RateLimit-Limit-Minute, X-RateLimit-Remaining-Minute, X-RateLimit-Limit-Day and X-RateLimit-Remaining-Day.
Usage and paid access
API keys shows daily usage for each key; Billing shows the account’s plan. API and MCP use the same key and its quotas. Per-minute and per-day limits are not a monetary credit balance. Check the displayed price, currency and terms before subscribing.
Choose a token budget that fits your task, limit error retries and reuse page references within a task. The price of a plan never influences source ranking.