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Every MCP tool and every /v1/* REST call needs a beta partner API key. There is no anonymous test mode.

Sending the key

MCP also accepts ?key= on the server URL. Prefer the header so the key stays out of logs and shared configs. Your key is personal to the beta. Don’t commit it, paste it into shared chats, or embed it in a client-side app.

Where the key is issued

Keys are hand-issued for the partner beta and sent in your welcome email. Enter the same key in the console to see today’s search usage.

Daily search cap

search counts against a per-key daily allowance (UTC). When the cap is hit: Non-search tools do not consume the search allowance. Failed searches with invalid_key, unauthorized, invalid_arguments, rate_limited, or daily_limit_reached are not counted. Need a higher cap? Reply to your welcome email.

Auth errors

Console vs MCP vs REST

See Errors for the full code list and Console for the partner UI.