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 apideck-libraries/api-skills --skill exact-online-nlgit clone --depth 1 https://github.com/apideck-libraries/api-skillsWrote 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/apideck-libraries/api-skills/exact-online-nl)<a href="https://agentmods.dev/skills/apideck-libraries/api-skills/exact-online-nl"><img src="https://agentmods.dev/badge/skills/apideck-libraries/api-skills/exact-online-nl/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/apideck-libraries/api-skills/exact-online-nl"><img src="https://agentmods.dev/badge/skills/apideck-libraries/api-skills/exact-online-nl.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 | $0.00077 | $0.02468 |
| Opus 5.5 | $0.00031 | $0.00987 |
| Sonnet 5.5 | $0.00015 | $0.00494 |
| Haiku 4.5 | $0.00008 | $0.00247 |
Grade A, and why
exact-online-nl scanned grade A with 1 finding 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 13d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl 'https://unify.apideck.com/connector/connectors/exact-online-nl' \ How it starts
The opening of the file, as written. The whole thing — 184 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Exact Online NL (via Apideck)
Access Exact Online NL through Apideck's Accounting unified API — one of 34 Accounting connectors that share the same method surface. Code you write here ports to Access Financials, Acumatica, banqUP and 30 other Accounting connectors by changing a single serviceId string. Apideck handles auth, pagination, rate limiting, and retries so you don't write per-tenant Exact Online NL plumbing.
Beta connector. Exact Online NL is currently in beta on Apideck. Expect partial resource coverage and occasional mapping gaps. Always verify coverage (see below) and fall back to the Proxy API for unsupported operations.
Quick facts
- Apideck serviceId:
exact-online-nl - Unified API: Accounting
- Auth type: oauth2
- Status: beta
- Gotchas: page
- Exact Online NL docs: https://support.exactonline.com
- Homepage: https://www.exact.com/nl
At a glance
- Implementation difficulty: moderate — Paid Developer Subscription + App Review Required for External Consumers
- Vendor partnership required: yes (developer portal) — Registering your app requires a paid Exact Online developer subscription (per country); App Store listing is optional.
- Apideck-managed credentials: available — For testing: OAuth shows Apideck; production requires your own app. The only Exact Online connector with Apideck credentials.
- Account type required: Active Exact Online subscription on the Dutch instance
- Consumer access level: Any user who can authorise third-party app connections.
- Sandbox: available — Test with your Dutch developer subscription, a free 30-day trial on the production instance, or Apideck's temporary shared test credentials; all data is live.
- Costs: Developer subscription approx. €15/month per country (excl. VAT); no per-call charges.
- Rate limits: 60 requests/minute and 5,000 requests/day per app per division; Exact Online Premium raises the daily cap to 30,000.
- Authentication: Authorization Code flow.
- Webhooks: No webhooks — Exact Online has native webhooks, but Apideck does not surface them for this connector; sync by polling.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 13d ago Changed 5f434d4d83cd
- 20d ago Changed a0be8df662c5
- 1mo ago First seen · 184 lines · 77 tokens per session scan A c2c027f37269
exact-online-nl is a skill published in the GitHub repository apideck-libraries/api-skills (5 stars, last pushed yesterday), licensed Apache-2.0. It adds 77 tokens to every session and 2,468 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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