Multiple tools have overlapping purposes that could cause confusion. buildBaziFromLunarDatetime, buildBaziFromSolarDatetime, and getBaziDetail all appear to generate bazi (eight characters) information from datetime inputs, with getBaziDetail explicitly stating it accepts both solar and lunar inputs. This creates ambiguity about which tool to use for bazi generation, though getBaziDetail's description clarifies parameter requirements.

The naming follows a mixed convention with some consistency issues. Four tools use verb_noun patterns (buildBaziFrom..., getBaziDetail, getChineseCalendar, getSolarTimes), but buildBaziFrom... uses camelCase while get... tools use lowercase. The verbs are reasonably descriptive but the casing inconsistency reduces predictability.

Five tools is well-scoped and appropriate for a bazi/Chinese calendar server. Each tool appears to serve a distinct function within the domain, and the count is neither too sparse nor overwhelming for the apparent scope of Chinese astrology and calendar operations.

The tool set covers core bazi generation from both calendar systems, detailed bazi analysis, Chinese calendar information, and solar time conversion from bazi. Minor gaps might include more advanced bazi analysis features or additional calendar functions, but the surface supports basic workflows without obvious dead ends.