Show HN: I built Tokenyst to stop getting shocked by Claude Code API bills (github.com)

Tokenyst, a new command-line tool, has been introduced to help developers manage and track their costs when using Claude Code for AI coding sessions. The tool automatically records token usage and expenses in real-time, allowing users to set budgets for specific tasks and monitor their expenditure accordingly. This local-first application enhances financial oversight by storing all data on the user's machine, ensuring that no cloud connectivity is required. The significance of Tokenyst lies in its potential to empower indie developers and teams to better control their API costs, a critical consideration as AI model usage grows. By offering features like built-in pricing for all Claude models, session summaries, and budget tracking, Tokenyst simplifies financial management in a sector where expenses can quickly escalate. With straightforward commands, users can create, adjust, and view their budget allocations, making it a powerful addition for anyone engaging with Claude Code in a cost-sensitive environment.