Scored across 69 tools
Most tools have genuinely distinct domains (CEAPS, remuneration, contracts, votes, speeches), but several sets clearly overlap: senado_buscar_materias vs senado_search_processos, senado_obter_materia vs senado_obter_processo, senado_agenda_plenario vs senado_encontro_plenario vs senado_resultado_plenario, and multiple senado_tabelas_* variants. The descriptions do a heroic job of cross-referencing alternatives, which mitigates but does not eliminate boundary confusion.
A Portuguese verb_noun convention (senado_listar_senadores, senado_obter_materia) is the majority pattern, but it breaks badly with mixed English/Portuguese (senado_search_votacoes, senado_search_processos, search, fetch) and with inconsistent verb choices (listar vs buscar vs obter). Two tools use Portuguese names and two use bare English, so an agent cannot fully predict a name from its intent.
69 tools is far beyond the recommended 15-tool ceiling and heavy enough to cause selection errors and context bloat. The domain (legislative open data) is broad, but many tools are fine-grained variants (tabelas_referencia vs tabelas_plenario vs tabelas_processo vs pessoal_tabelas) that could be consolidated.
Coverage is remarkably thorough: senators, committees, votes, materials, processes, budgets, contracts, staffing, speeches, transcripts, and e-Cidadania all have create-like search plus detail pairs. Minor gaps exist (no update/mutation surface, which is fine for read-only open data) but the lifecycle is otherwise well covered.