// MCP TOKEN COST

The Contaí — Calculadoras Fiscais Brasileiras MCP server costs 68,378 tokens before the first call.

Every request your agent makes carries every tool definition this server exposes — context your code, documents and conversation can't use, mostly for tools the agent never calls. You don't need them all in the window, and you don't have to pay for them.

QUICK ANSWER The Contaí — Calculadoras Fiscais Brasileiras MCP server's 139 tool definitions consume 68,378 tokens — 34% of a 200k context window, and 33× the median MCP server (2,069 tokens). A scoped grant exposing only the tools you use cuts that roughly in proportion.

MEASURED FROM SCHEMAS tiktoken o200k_base · rank #9 of 3,354 measured servers · refreshed every build Method →

// CONTEXT WINDOW SHARE

What that costs before your agent starts working.

Tool definitions are overhead: they occupy context on every request and compete with your code, documents and conversation history for the same window.

200K WINDOW 34%

1M WINDOW 6.8%

Corpus context: Contaí — Calculadoras Fiscais Brasileiras ranks #9 of 3,354 measured MCP servers by definition cost. The median is 2,069 tokens, p90 is 11,359, and the heaviest (SmartBear MCP) is 137,725 — 69% of a 200k window on its own. New to this? See MCP token cost and context window in the glossary.

Token cost is one axis. See the risk picture across your whole stack →

// PER-TOOL BREAKDOWN

Where the 68,378 tokens go.

Each row is one tool definition as a tools/list entry — name, description and input schema — counted with o200k_base. Average: 492 tokens per tool.

Tool	Category	Tokens	% of server
calcular_aluguel_vs_compra_imovel	Read	1,350	2.0%
decisao_clt_vs_pj	Read	1,275	1.9%
calcular_13o_salario	Read	993	1.5%
calcular_ferias	Read	989	1.4%
calcular_custo_total_ter_filho	Read	988	1.4%
calcular_custo_total_veiculo_tco	Read	982	1.4%
calcular_salario_liquido	Read	953	1.4%
calcular_roi_imobiliario	Read	921	1.3%
calcular_iof_investimentos_cambio	Read	914	1.3%
calcular_ganho_capital_imovel	Read	910	1.3%
calcular_taxa_efetiva_vs_nominal	Read	854	1.2%
calcular_ponto_equilibrio	Read	802	1.2%
calcular_fire_independencia_financeira	Read	799	1.2%
calcular_markup_precificacao	Read	795	1.2%
calcular_rescisao_clt	Read	788	1.2%
calcular_simples_nacional	Read	729	1.1%
calcular_fundo_de_emergencia	Read	705	1.0%
calcular_acao_trabalhista	Read	698	1.0%
calcular_custo_total_compra_imovel	Read	695	1.0%
calcular_auditoria_beneficios_trabalhistas	Read	685	1.0%
calcular_planejamento_compra_veiculo	Read	678	1.0%
calcular_financiamento_veiculo	Read	674	1.0%
calcular_conversao_moedas_iof	Read	668	1.0%
calcular_stock_options_vesting_ir	Read	657	1.0%
calcular_margem_contribuicao	Read	656	1.0%
calcular_quanto_para_aposentar	Read	637	0.9%
calcular_comparador_regime_tributario	Read	623	0.9%
calcular_ir_sobre_investimentos	Read	623	0.9%
calcular_custo_turnover	Read	614	0.9%
calcular_tesouro_direto_rendimento	Read	594	0.9%
calcular_pro_labore_ideal	Read	588	0.9%
calcular_nota_enem_sisu	Read	585	0.9%
calcular_cdb_vs_lci_vs_tesouro_vs_poupanca	Read	578	0.8%
calcular_ir_renda_variavel_b3	Read	576	0.8%
calcular_planejamento_viagem_sonho	Read	571	0.8%
calcular_cartao_credito_cashback_anuidade	Read	560	0.8%
calcular_carne_leao	Read	558	0.8%
calcular_depreciacao_veiculo	Read	555	0.8%
calcular_irpf_restituicao	Read	555	0.8%
calcular_holding_operacional_economia	Read	554	0.8%
calcular_pgbl_vs_vgbl	Read	553	0.8%
calcular_custo_hora_freelance	Read	548	0.8%
calcular_financiamento_imobiliario	Read	544	0.8%
calcular_holding_familiar	Read	538	0.8%
calcular_custo_total_contratacao_clt	Read	535	0.8%
calcular_divisao_quinhoes	Read	531	0.8%
calcular_orcamento_base_zero	Read	529	0.8%
calcular_score_exposicao_patrimonial	Read	529	0.8%
calcular_holding_vs_inventario	Read	518	0.8%
calcular_inflacao_acumulada	Read	512	0.7%
calcular_intercambio_acumular_divisas	Read	510	0.7%
calcular_plano_saude_orcamento_familiar	Read	510	0.7%
calcular_valuation_clinica	Read	510	0.7%
calcular_rentabilidade_imovel_aluguel	Read	500	0.7%
calcular_perfil_investidor_suitability	Read	496	0.7%
calcular_valuation_empresa	Read	492	0.7%
calcular_itcmd_inventario	Read	490	0.7%
calcular_partilha_bens_divorcio	Read	484	0.7%
calcular_consorcio_credito_empresarial	Read	482	0.7%
calcular_renda_passiva_independencia	Read	482	0.7%
calcular_salario_maternidade	Read	482	0.7%
calcular_alocador_50_30_20	Read	477	0.7%
calcular_planejamento_compra_imovel	Read	475	0.7%
calcular_bolsa_estagio	Read	470	0.7%
calcular_renda_fixa_em_dolar	Read	467	0.7%
calcular_revisao_vida_toda	Read	466	0.7%
calcular_simulador_carteira_xp	Read	466	0.7%
calcular_custo_remessa_internacional	Read	464	0.7%
calcular_simulador_aposentadoria	Read	463	0.7%
calcular_darf_calculo	Read	451	0.7%
calcular_simulador_lance_consorcio	Read	450	0.7%
calcular_calculadora_milhas_passagem	Read	447	0.7%
calcular_dividend_yield	Read	447	0.7%
calcular_vpl_tir	Read	441	0.6%
calcular_rolagem_divida	Read	438	0.6%
calcular_revisao_assinaturas_gastos	Read	436	0.6%
calcular_custo_efetivo_total	Read	432	0.6%
calcular_simulador_fii	Read	430	0.6%
calcular_portabilidade_previdencia	Read	429	0.6%
calcular_reserva_oportunidade	Read	424	0.6%
calcular_tmb	Read	415	0.6%
calcular_meta_poupanca_mensal	Read	413	0.6%
calcular_bdr_vs_etf_vs_acao_direta	Read	402	0.6%
calcular_bola_de_neve_dividas	Read	400	0.6%
calcular_horas_extras_dsr	Read	399	0.6%
calcular_banco_de_horas	Read	397	0.6%
calcular_rendimento_ate_meta	Read	397	0.6%
calcular_doacao_usufruto	Read	393	0.6%
calcular_juros_compostos	Read	390	0.6%
calcular_auxilio_doenca	Read	386	0.6%
calcular_pensao_alimenticia_justa	Read	384	0.6%
calcular_capital_de_giro_necessario	Read	382	0.6%
calcular_simulador_seguro_residencial	Read	377	0.6%
calcular_consultoria_pj_saude_financeira	Read	373	0.5%
calcular_simulador_seguro_pet	Read	372	0.5%
calcular_itcmd	Read	371	0.5%
calcular_quanto_vale_empresa	Read	371	0.5%
calcular_aluguel_reajuste	Read	370	0.5%
calcular_diagnostico_financeiro_360	Read	365	0.5%
calcular_consorcio_vs_financiamento	Read	360	0.5%
calcular_itbi	Read	360	0.5%
calcular_fgts_acumulado	Read	354	0.5%
calcular_lucro_presumido	Read	354	0.5%
calcular_adicional_noturno	Read	351	0.5%
calcular_calorias_macros	Read	351	0.5%
calcular_tributacao_previdencia_tabela	Read	350	0.5%
calcular_pgbl_beneficio_fiscal	Read	341	0.5%
buscar_lei	Read	338	0.5%
calcular_portabilidade_credito_economia	Read	336	0.5%
calcular_investimento_exterior	Read	335	0.5%
calcular_seguro_responsabilidade_civil	Read	334	0.5%
calcular_custo_oportunidade_poupanca	Read	332	0.5%
calcular_custo_real_cartao	Read	332	0.5%
calcular_simulador_seguro_auto	Read	331	0.5%
calcular_insalubridade_periculosidade	Read	330	0.5%
calcular_aviso_previo	Read	328	0.5%
calcular_simulador_renegociacao_divida	Read	324	0.5%
calcular_consumo_agua	Read	322	0.5%
calcular_horas_extras	Read	316	0.5%
calcular_inss_facultativo	Read	316	0.5%
calcular_seguro_desemprego	Read	316	0.5%
calcular_credito_pj_comparador	Read	312	0.5%
calcular_seguro_patrimonial_cobertura	Read	308	0.5%
calcular_seguro_vida_quanto_contratar	Read	306	0.4%
calcular_media_escolar	Read	292	0.4%
calcular_ipva	Read	275	0.4%
calcular_plr	Read	271	0.4%
calcular_mei_das	Read	257	0.4%
consultar_irpf_tabela	Read	255	0.4%
calcular_calculadora_gestacional	Read	233	0.3%
calcular_mensalidade_planejador	Financial	227	0.3%
calcular_periodo_fertil	Read	221	0.3%
consultar_inss_vigente	Read	217	0.3%
calcular_dias_entre_datas	Read	207	0.3%
consultar_tabela_inss_irrf	Read	203	0.3%
consultar_salario_minimo	Read	196	0.3%
calcular_peso_ideal	Read	194	0.3%
calcular_porcentagem	Read	184	0.3%
calcular_imc	Read	175	0.3%

// CUT THE COST

Your agent uses a handful of these tools. It pays for all 139.

You don't need all 139 of those definitions in the window. PolicyLayer is an MCP gateway that sits in front of Contaí — Calculadoras Fiscais Brasileiras: only the tools you grant are exposed to the agent, the rest never load. A smaller window means a sharper agent — less noise when it picks a tool — and every request costs less:

Grant scope	Definition cost	Reduction
All 139 tools (no gateway)	68,378 tokens	—
3 granted tools	~1,476 tokens	−98%
5 granted tools	~2,460 tokens	−96%
10 granted tools	~4,919 tokens	−93%

The risk dividend: 1 of these 139 tools are critical-risk (destructive or financial) and cost 227 tokens (0% of the definition load). Block them — the recommended starter policy — and you reclaim that context before tuning anything else.

Create a free account and register Contaí — Calculadoras Fiscais Brasileiras — nothing to install.
Grant only the tools you use — ungranted definitions never enter the context window.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CUT CONTAÍ — CALCULADORAS FISCAIS BRASILEIRAS TOKEN COST →

Instant setup, no code required.

Model your own stack in the token-cost calculator, or see the Contaí — Calculadoras Fiscais Brasileiras policy for what a sensible grant looks like.

//FAQ

Contaí — Calculadoras Fiscais Brasileiras token-cost questions.

How many tokens does the Contaí — Calculadoras Fiscais Brasileiras MCP server use?+

Its 139 tool definitions total 68,378 tokens — 34% of a 200k context window — measured with tiktoken o200k_base over the serialised tools/list payload. Exact counts vary slightly by client and model.

Why does Contaí — Calculadoras Fiscais Brasileiras consume tokens before I send a message?+

MCP clients load every connected server's tool definitions — name, description, and input schema — into the model's context so it knows what it can call. That payload is charged against your context window on every request, whether or not a tool is used.

How do I reduce Contaí — Calculadoras Fiscais Brasileiras's token usage?+

Expose fewer tools. A PolicyLayer grant scopes Contaí — Calculadoras Fiscais Brasileiras to only the tools you allow — ungranted definitions are filtered out of the tool list, so they never enter the context window. A grant of 3 typical tools costs roughly 1,476 tokens, a 98% reduction.

Does deferred tool loading fix this?+

Partially, in some clients. Claude Code defers MCP tool schemas behind a tool-search step by default, and VS Code has experimental grouping — but you still pay tokens per search and reload, and Cursor, Windsurf and Gemini CLI load definitions upfront. Reducing the exposed tool set cuts the cost in every client.

// METHOD & REVIEW

How these numbers were measured.

01

Serialisation

Each tool is serialised as a tools/list entry — name, description, input schema — from the schemas in the PolicyLayer scan database. Clients differ slightly in framing, so treat counts as close estimates.

02

Tokeniser

tiktoken o200k_base (GPT-4o/o-series). Anthropic's current tokeniser isn't published, so Claude's exact counts will differ; for English text and JSON schemas the totals are close enough to treat these as estimates.

03

Deferred loading

Some clients now defer schema loading (Claude Code's tool search; VS Code experimental grouping). You still pay per search and reload — and Cursor, Windsurf and Gemini CLI load everything upfront.

Computed 06-07-2026 from the PolicyLayer scan database over all 139 catalogued Contaí — Calculadoras Fiscais Brasileiras tools. Counts refresh with every site build.