tool · inferred from evidence
X-Subscription-Token
An HTTP request header used for authenticating Brave Search API calls.
- Brave Search MCP: 422 SUBSCRIPTION_TOKEN_INVALID
Fixes the Brave Search MCP server failing every query with a 422 subscription token error. Use when searches return 422 SUBSCRIPTION_TOKEN_INVALID, which means the BRAVE_API_KEY is missing, wrong, or not reaching the server. Not for wrong p