LLMCap: A Proxy Service That Enforces Hard Spending Limits on LLM API Calls
LLMCap is a proxy service that enforces hard dollar caps on LLM API calls across major providers (Anthropic, OpenAI, Google Gemini, Mistral, Cohere). When a user's spending hits a preset limit (e.g., $50), the service returns a 429 error and stops the call entirely — not just an alert. It requires only a one-line code change (swapping the base URL) and adds
