Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add iwebdevnl/exact-online-ai-connect --skill periodeafsluitinggit clone --depth 1 https://github.com/iwebdevnl/exact-online-ai-connectWrote 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/skills/iwebdevnl/exact-online-ai-connect/periodeafsluiting)<a href="https://agentmods.dev/skills/iwebdevnl/exact-online-ai-connect/periodeafsluiting"><img src="https://agentmods.dev/badge/skills/iwebdevnl/exact-online-ai-connect/periodeafsluiting/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/skills/iwebdevnl/exact-online-ai-connect/periodeafsluiting"><img src="https://agentmods.dev/badge/skills/iwebdevnl/exact-online-ai-connect/periodeafsluiting.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 | $0.00122 | $0.04055 |
| Opus 5.5 | $0.00049 | $0.01622 |
| Sonnet 5.5 | $0.00024 | $0.00811 |
| Haiku 4.5 | $0.00012 | $0.00405 |
Grade A, and why
periodeafsluiting 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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 358 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Periodeafsluiting
Systematische maand- of kwartaalafsluiting voor Exact Online. Voorkomt dat je een periode
afsluit terwijl er nog openstaande items zijn. Deze skill werkt in elke administratie omdat
hij classificeert op rekeningtype (GLAccount.Type) en op dagboeksoort, niet op
administratie-specifieke grootboeknummers, dagboeknummers of -namen.
Waarom dit generiek is (lees dit eerst)
Grootboeknummers, dagboeknummers en -namen verschillen per administratie: 1050 is niet altijd
een kruispost, dagboek 20 is niet altijd de Rabobank. Wat wél in elke Exact Online-administratie
identiek is, is het veld Type op de grootboekrekening, een vaste, platform-brede classificatie
(bijvoorbeeld 12 = Bank, 24 = VAT, 90 = General). Classificeer op Type en op
omschrijving-trefwoorden, nooit op vast nummer of naam. Zo blijft de afsluiting correct,
ongeacht het rekeningschema van de klant.
Let op: haal de dagboeken en grootboekrekeningen altijd eerst live op uit de administratie zelf. Ga nooit uit van vaste nummers uit een voorbeeld, die zijn illustratief.
In alle voorbeelden hieronder staat
<jaar>voor het boekjaar en<periode>voor de periode die je afsluit. Bepaal die in stap 1 (het huidige boekjaar of wat de gebruiker vraagt) en vul ze overal in. Gebruik nooit een vast jaartal of periodenummer uit dit bestand.
Welke tool wanneer
| Tool | Waarvoor |
|---|---|
read_operation |
Alle GET-queries: JournalStatusList, ReportingBalance, GLAccounts, TransactionLines. Levert maximaal 60 records per aanroep. |
analyze_data |
Optioneel voor aggregaties over veel boekingsregels. Alleen op Trial of Analytics, niet op Essentials. |
Deze skill schrijft niets weg. Er is geen write_operation in de hele checklist, en dat is met
opzet: zie stap 9.
Waarom systematisch afsluiten
Een periode afsluiten zonder controle is risicovol: vergeten boekingsvoorstellen, onverwerkte bankregels, tussenrekeningen die niet op nul staan, en terugkerende boekingen die ontbreken. Deze skill loopt een checklist door en geeft per onderdeel een duidelijke status.
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.
- 1mo ago First seen · 358 lines · 122 tokens per session scan A dc0a124ed4ec
periodeafsluiting is a skill published in the GitHub repository iwebdevnl/exact-online-ai-connect (0 stars, last pushed 2mo ago), licensed MIT. It adds 122 tokens to every session and 4,055 once invoked, about $0.0005 per session on Opus 5.5. 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.
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