Rate Limiting And Abuse Prevention For Tool Calls

via “rate-limited request throttling with per-tool quotas”

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Unique: Implements dual-quota rate limiting (30 req/min search, 20 req/min content) at the MCP tool execution layer rather than at HTTP client level, providing tool-specific throttling that reflects actual service impact. Integrated into FastMCP framework's tool decorator pattern, making limits transparent to MCP clients without additional configuration.

vs others: More granular than generic HTTP rate limiters (separate quotas per tool); simpler than distributed rate limiting systems (no Redis/external state needed); integrated into MCP protocol layer vs requiring separate middleware.