LLMCap – A proxy that hard-stops LLM API calls when you hit a dollar cap

LLMCap is a proxy service that enforces hard dollar caps on LLM API calls across six major providers (Anthropic, OpenAI, Google Gemini, Mistral, Cohere, and AWS Bedrock), immediately blocking new requests when a spending limit is reached rather than just issuing alerts. The tool integrates with existing code in minutes by routing API calls through a proxy URL and enables granular cost tracking with alerts for spending anomalies, cache efficiency drops, and error rate spikes to help prevent unexpected bills.