Robin Saige we check the tools AI agents call

FalaZuki Finance BR

com.falazuki/finance-br

Cálculos e regras financeiras do Brasil com fonte e vigência em cada resposta.

— the operator's own registry description reported

Publisher com.falazuki · first seen 2026-08-26 · endpoint https://mcp.falazuki.com/mcp

allow
verdict
rich-fast-solo
cluster
ok_tools
answers
114
tools served

Dependency rating derived

allow
allow — alive & usable · computational ● · V n/a
allow — because answers ●, 114 tools legible (band A) ●, no confirmed drift in 2 probes ●; not yet checked: truth (0 runs)

Cluster rich-fast-solo · distinctiveness 0.562 (moderate). Every figure is a percentile or class within the 15,472-server censussee the whole spectrum.

Does it answer? Q1 · observed
answersalive_tools
latency68 ms
vs populationfast
protocolcurrent
authopen
Can it be used? Q4 · observed
tools114
vs populationhigh
capabilities1
harnessA
Did it hold when checked? Q3–Q4 · derived
identitysolo
servers on its host1
verifiabilityunassessed
duplicate inventoryno
drift events0
answers trueno primary

🔏 Signed receipt rr_ee93cdfa5a1d1136b505bd44 · ed25519 · key rs-rcpt-2026-08 — this rating is tamper-evident; an agent gets the full signature from check_server and can verify it against the published key.

Q1Does it answer?alive & usable — 2 probes ●evidence ↓
Q2What is it?computational ● evidence ↓
Q3Can it be checked?V n/a for this kind ◐evidence ↓
Q4Did it hold?harness A · truth not yet run · no drift ●evidence ↓
Q5What company does it keep?rich-fast-solo · 1 on its host (context, not verdict) ◐evidence ↓

● observed · ◐ derived · ○ reported — the verdict synthesizes Q1–Q4; Q5 is context. Methodology →

History observed

Every probe we made, oldest → newest (2 shown, 2026-08-30 → 2026-09-06). Green answered · amber answered-but-walled · red no useful answer. A gap in our cadence is a gap in coverage, not evidence about the server.

changelog (1 events)
datetypewhat changed
2026-08-30outcomefirst probe: ok_tools

What kind of tools these are derived

Verification only means something relative to a tool's NATURE — an email-sender has no "true answer", a generator has no answer key. Classification evidence: classified from tool names/descriptions/annotations WE OBSERVED. What checking applies to each kind (the full methodology →):

naturetoolsmeaning what checking applies
computational82deterministic transformsself-checkable by re-computation and known-answer tests
retrieval-public17serves public factstruth-checkable against a public source — the V-ladder applies in full
unclassified11not classifiable from its textTier-1 only until its tools describe themselves
action4changes the worldno true answer exists; we check the CONTRACT (destructive/read-only/idempotent declarations, error legibility) and never fire real actions

Tools last seen observed

advise_investment advise_tax_regime calculate_acordo_divida calculate_adicional_noturno calculate_annual_salary calculate_antecipacao_fgts calculate_average_price calculate_aviso_previo calculate_break_even calculate_budget calculate_car_affordability calculate_car_ownership_cost calculate_card_machine_fee calculate_carne_leao calculate_cdi_yield calculate_cet calculate_civil_monetary_update calculate_come_cotas calculate_compound_interest calculate_consorcio calculate_credit_card_interest calculate_custo_demissao calculate_darf calculate_debt_payoff calculate_dias_uteis calculate_discount calculate_dividend_income_goal calculate_dividend_yield calculate_emergency_fund calculate_employee_cost calculate_energy_consumption calculate_equivalent_rate calculate_fator_r calculate_fgts calculate_financial_independence calculate_financing calculate_first_million calculate_ganho_capital_imovel calculate_gross_from_net calculate_hourly_wage calculate_import_tax calculate_imposto_apostas calculate_imposto_cripto calculate_imposto_dividendos calculate_inflation_adjustment calculate_inss_autonomo calculate_installment calculate_investment_return calculate_iof_resgate calculate_ipca_plus calculate_late_das calculate_lci_lca calculate_life_insurance_need calculate_markup calculate_mei_tax calculate_multa_aluguel calculate_net_salary calculate_net_worth_benchmark calculate_opportunity_cost calculate_optimal_prolabore calculate_overtime calculate_payroll_loan calculate_percentil_renda calculate_pj_invoice calculate_raise_vs_inflation calculate_real_salary calculate_rent_adjustment calculate_rent_affordability calculate_rent_vs_buy calculate_required_raise calculate_retirement calculate_rpa calculate_rule_of_three calculate_salary_time_value calculate_savings_return calculate_severance calculate_simple_interest calculate_simples_nacional calculate_tesouro_prefixado calculate_tesouro_selic calculate_thirteenth_salary calculate_transicao_aposentadoria calculate_unemployment_insurance calculate_vacation_pay calculate_weekday can_i_quit_job check_inss_deduction check_irpf_obligation check_irrf_deduction check_payslip check_severance compare_clt_vs_pj compare_fuel compare_investments compare_loans compare_pgbl_vgbl compare_with_cdb convert_currency evaluate_pj_offer get_accumulated_return get_average_salary get_bank_holidays get_cost_of_living get_current_rates get_falazuki_info get_focus_expectations get_inss_table get_irpf_table get_minimum_wage_history get_rates_history get_tesouro_direto list_top_professions search_calculator simulate_income_tax

Harness readiness observed

Can an agent's harness pick this tool and call it correctly? Graded on the three things an agent reads — name, description, typed parameters. Band A — an agent can pick and call these reliably.

legibility checktools passingok
name is clear & specific114/114
has a description114/114
description is substantive114/114
parameters are typed114/114
parameters are described114/114

114 of 114 tools graded · 114 with a captured input schema. RS-008, Tier-1 — no domain knowledge, applies to any tool. “Alive” is not the same as “usable”.

Truth checks observed

Not in the Tier-2 trade lane, or not yet checked. Tier-2 re-derives a server's answers against published primary sources — see truth checks.

Protocol conformance observed

2025-06-18
protocol version
session model
1.1.0
server version falazuki-finance-br

Capabilities: tools

Drift observed

No confirmed drift on record. Baseline set 2026-09-06; changes appear here after human review.

raw probe records
probed (UTC) outcomehttpmsprotocol
2026-09-06T06:12:23Zok_tools200682025-06-18
2026-08-30T06:12:07Zok_tools200842025-06-18

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verdict badge

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[![Robin Saige verdict](https://robinsaige.com/badge/com.falazuki/finance-br.svg)](https://robinsaige.com/s/com.falazuki/finance-br)

Depend on it? Subscribe to its change feed — outcome changes and confirmed drift, no account needed. Building on it? The full dossier as JSON — verdict, rating, truth checks, history — stable enough to gate CI on.

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