The two tools have clearly distinct roles: list_payslips is a data-retrieval tool for a given year, while estimate_income is a computation tool for year-end adjustment income projection. An agent can easily decide which to call based on whether it needs raw slips or an annual estimate.

Both names follow the same snake_case verb_noun convention (list_payslips, estimate_income), with verbs that accurately reflect the operation type. No mixing of conventions or vague names.

Two tools is thin for a payslip/income domain; there is no way to fetch a single month's detail, check login/session status, or list bonuses independently. The scope is narrow enough that it isn't egregious, but the surface feels minimal.

Core retrieval and estimation are covered, but notable gaps exist: no per-month detail lookup, no session/auth status tool despite the manual-login flow, and no way to correct or annotate estimated rows beyond reading them. Agents can work around these only by parsing the year-level rows.