dsh-session-cost

When having long multi-turn conversations with DeepSeek models in the dsh Web UI, one question often goes unanswered: how much API budget has this particular session already consumed? dsh does not ship with a built-in cost indicator, so users must manually check the official console, which is neither convenient nor easily traceable back to a specific chat.

dsh-session-cost tackles exactly this pain point. It registers a small badge right beside the input box that refreshes every five seconds, showing the cumulative DeepSeek spend for the current session in CNY. Hovering over the badge pops up a style-consistent panel with a per-message cost breakdown table (unhit input, cache hit, and output tokens each multiplied by quantity and effective unit price), the local DSH daily DeepSeek usage, and the account balance fetched via the official user/balance endpoint. The built-in pricing engine calculates each assistant message individually according to the official DeepSeek rate card, automatically applying peak and off-peak pricing, and strictly limits itself to DeepSeek models so that requests to other providers are never counted.

This plugin is ideal for developers who regularly call deepseek-v4-flash or deepseek-v4-pro through dsh and need to track API spend continuously, stay within a monthly budget, or share usage reports with a team. It requires no extra configuration beyond setting the DEEPSEEK_API_KEY in the model settings and restarting the dsh web service.