baar-core

baar-core provides essential pre-flight budget enforcement for managing product usage. It acts as a hard local kill-switch, preventing unintended overspending. Key features include: • Pre-flight budget checks for every call • Local exception raising when budget is over cap • No DNS or TCP connections for blocked calls • Up to 84% cost reduction via semantic routing • Per-user SQLite quotas for granular control This tool is designed to intercept potential cost overruns before they happen, ensuring that operations halt immediately once a predefined spending limit is reached. Unlike reactive systems that notify you after a charge, baar-core operates proactively by estimating the cost of each request and blocking it if it exceeds the remaining budget. This local enforcement means zero charges are incurred for blocked calls, providing peace of mind and strict financial control. baar-core integrates seamlessly with existing frameworks like LangGraph and FastAPI, making it versatile for various development environments. Its semantic routing capability analyzes the complexity of tasks and intelligently directs them to the most cost-effective resources, dramatically reducing overall operational expenses. The open-source, MIT-licensed nature allows for transparency and community contributions. Ideal for individual developers, startups, and engineering teams working with usage-based services, baar-core eliminates unexpected bills and helps maintain predictable expenditures. It’s perfect for ensuring cost discipline in research, development, and production workflows, empowering users to experiment and deploy with confidence within their financial boundaries.