Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/johnhout/knowledge-work-belastingzakennpx agentmods add commands/johnhout/knowledge-work-belastingzaken/loonheffingenWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/commands/johnhout/knowledge-work-belastingzaken/loonheffingen)<a href="https://agentmods.dev/commands/johnhout/knowledge-work-belastingzaken/loonheffingen"><img src="https://agentmods.dev/badge/commands/johnhout/knowledge-work-belastingzaken/loonheffingen/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/commands/johnhout/knowledge-work-belastingzaken/loonheffingen"><img src="https://agentmods.dev/badge/commands/johnhout/knowledge-work-belastingzaken/loonheffingen.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00010 | $0.00391 |
| Opus 5 | $0.00005 | $0.00196 |
| Sonnet 5 | $0.00002 | $0.00078 |
| Haiku 4.5 | $0.00001 | $0.00039 |
Grade A, and why
loonheffingen scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Loonheffingen / Payroll Taxes
If placeholders are unclear, see CONNECTORS.md.
Important / Belangrijk: This workflow support is not legal or fiscal advice. Require review by a qualified Dutch tax professional.
Prepare payroll tax workflow including periodic controls and WKR attention points.
Usage
/belastingadviseur:loonheffingen <tijdvak>
Workflow
- Confirm payroll scope:
- Reporting period and employer entity
- Active payroll setups and known exceptions
- Gather payroll evidence:
- Payroll runs, wage summaries, and benefits overview
- WKR-related expense data and categorization support
- Control framework:
- Reconcile payroll tax totals with payroll administration
- Check unusual deviations by period and employee groups
- Flag potential WKR or classification issues for review
- Official-source verification:
- Verify payroll filing timing and procedural obligations on
belastingdienst.nl - Verify legal interpretation references on
wetten.overheid.nlwhere needed - Capture URL and retrieval date
- Fallback behavior:
- If
~~salarisadministratieis not connected, request period export files - If evidence is incomplete, classify as non-final draft
- If official verification cannot be completed, mark affected guidance as unverified
Required Output Format (Use Exactly)
Context / ContextAssumptions / AannamesRequired Documents / Benodigde stukkenStep-by-step / StappenplanChecks & Risks / Controles en risico'sNext Actions / Volgende actiesSources (official) / Bronnen (officieel)Professional Review Disclaimer / Disclaimer deskundige beoordeling
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 9d ago First seen · 55 lines · 10 tokens per session scan A eaf56fb2cd95
loonheffingen is a command published in the GitHub repository johnhout/knowledge-work-belastingzaken (6 stars, last pushed 6mo ago), licensed MIT. It adds 10 tokens to every session and 391 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other commands, from other repositories
tax-review
Tax-filing compliance check — invokes tax-reviewer to produce TM-tax-{slug}.md with MeF e-file schema, Form 8879, PTIN/Circular 230, and IRC §7216 consent gaps.
billing-rate
Gestiona tarifas y facturas de servicios legales. Subcomandos: set (definir tarifa), calculate (calcular honorarios), invoice (generar factura), report (análisis), list (listar tarifas).
filings
Scan recent filings on a company and surface material events (director changes, new charges, capital events, insolvency markers). Works on GB / IE / CA / IS / FI / IM / LI / MX / KR.
monitor
AML transaction monitoring and suspicious activity reporting.
tax-planning
Optimize tax liability or ensure tax compliance.
child-support-calc
A calculator for Japanese child support and marital living costs, using the revised standard calculation method published in 2019. Child support is money paid for a child after divorce; marital living costs are shared living expenses while spouses live apart.