Robin Saige we check the tools AI agents call

日本の給与・社会保険・労働法

io.github.kishida-devil/jp-payroll-mcp

Japan payroll & social insurance. 日本の給与計算・社会保険。47都道府県の料率、源泉所得税、割増賃金、有給、標準報酬月額の改定、最低賃金。根拠の条文つき。

— the operator's own registry description reported

Publisher io.github.kishida-devil · first seen 2026-08-30 · endpoint https://japan-payroll-api.tsumugi.workers.dev/mcp

allow
verdict
mid-solo
cluster
ok_tools
answers
30
tools served

Dependency rating derived

allow
allow — alive & usable · action ● · V n/a
allow — because answers ●, 30 tools legible (band A) ●, no confirmed drift in 1 probes ●; not yet checked: truth (0 runs)

Cluster mid-solo · distinctiveness 0.327 (typical). Every figure is a percentile or class within the 15,472-server censussee the whole spectrum.

Does it answer? Q1 · observed
answersalive_tools
latency244 ms
vs populationtypical
protocolcurrent
authopen
Can it be used? Q4 · observed
tools30
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_0916074600233132a5acdc13 · 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 — 1 probes ●evidence ↓
Q2What is it?action ● 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?mid-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 (1 shown, 2026-09-06 → 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
2026-09-06outcomefirst 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
action21changes the worldno true answer exists; we check the CONTRACT (destructive/read-only/idempotent declarations, error legibility) and never fire real actions
retrieval-public5serves public factstruth-checkable against a public source — the V-ladder applies in full
unclassified3not classifiable from its textTier-1 only until its tools describe themselves
computational1deterministic transformsself-checkable by re-computation and known-answer tests

Tools last seen observed

business_days calculate_annual_cost calculate_bonus calculate_overtime_pay calculate_payroll_batch calculate_payslip calculate_withholding_tax calculate_year_end_adjustment check_data_freshness check_insurance_eligibility check_leave_exemption commuting_allowance_exemption consumption_tax decide_regular_remuneration decide_regular_remuneration_batch estimate_resident_tax get_age_milestones get_insurance_rates get_minimum_wage get_statute_text judge_annual_average judge_annual_leave judge_leave_end_revision judge_monthly_revision judge_worker_type list_workers_compensation_rates lookup_standard_remuneration national_insurance validate_corporate_number validate_invoice_numbers_batch

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 & specific30/30
has a description30/30
description is substantive30/30
parameters are typed30/30
parameters are described25/3025/30

30 of 30 tools graded · 30 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
0.4.5
server version jp-payroll

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
2026-09-06T06:16:15Zok_tools2002442025-06-18

Watch or embed this verdict

verdict badge

Operators: put the live verdict in your README — it updates with every census, links back here, and is a dated observation, never a warranty:

[![Robin Saige verdict](https://robinsaige.com/badge/io.github.kishida-devil/jp-payroll-mcp.svg)](https://robinsaige.com/s/io.github.kishida-devil/jp-payroll-mcp)

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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