Show HN: Key rotation for LLM agents shouldn't require a proxy (github.com)

A new library, LlmKeyPool, has been introduced to address a common challenge faced by developers managing multiple LLM (Large Language Model) agents: rate limiting of API keys. This solution offers an automated way to rotate between a pool of API keys from different providers, such as Anthropic and OpenAI, preventing system stalls caused by a single key being rate-limited. The library also implements exponential-backoff cooldowns, which help avoid overloading recovering endpoints, and can automatically switch to alternative providers if all keys for a given provider are exhausted. The significance of this tool lies in its ability to streamline LLM service operations, allowing developers to focus more on building applications rather than managing API key logistics. By providing built-in key rotation and error handling without the need for a proxy server, LlmKeyPool simplifies infrastructure requirements while enhancing reliability. With features such as state persistence and sophisticated error classification, this TypeScript-native library promotes efficient and resilient interactions with LLM APIs, making it a valuable resource for the AI/ML community.