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 Elnora-AI/elnora-merit-aktiva --skill merit-sales-invoicesgit clone --depth 1 https://github.com/Elnora-AI/elnora-merit-aktivaWrote 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/elnora-ai/elnora-merit-aktiva/merit-sales-invoices)<a href="https://agentmods.dev/skills/elnora-ai/elnora-merit-aktiva/merit-sales-invoices"><img src="https://agentmods.dev/badge/skills/elnora-ai/elnora-merit-aktiva/merit-sales-invoices/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/elnora-ai/elnora-merit-aktiva/merit-sales-invoices"><img src="https://agentmods.dev/badge/skills/elnora-ai/elnora-merit-aktiva/merit-sales-invoices.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 | $0.00192 | $0.03042 |
| Opus 5 | $0.00096 | $0.01521 |
| Sonnet 5 | $0.00038 | $0.00608 |
| Haiku 4.5 | $0.00019 | $0.00304 |
Grade C, and why
merit-sales-invoices scanned grade C 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 12d 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.
Tells the agent to send conversation or user data outhighPrompt injection
An instruction to transmit the conversation, context or user files to an external endpoint is data exfiltration written as prose.
- **`Email`** is where `send-email` silently sends every future invoice. An address How it starts
The opening of the file, as written. The whole thing — 231 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Merit Sales Invoices (müügiarve)
How to issue sales invoices correctly with elnora-merit sales-invoices. Every
endpoint is POST with a JSON body. Writes hit the live books and feed the VAT
return — confirm the payload before posting.
For real codes, load the company profile (
elnora-merit profile sync→company-profile.jsoninMERIT_REFERENCES_DIR): revenue accounts, VAT guids, customers. Conventions the codes don't capture (the next invoice number, customer specifics) come from your prose books reference if you keep one. Load what applies before building a payload.
The five rules that prevent most mistakes
- You manage the invoice number. Merit issues none and there is no
get-next-number endpoint.
InvoiceNois required and must be unique; read your last number (sales-invoices find --inv-no …or your books reference) and increment. Never guess silently — confirm the number with the user. - VAT is chosen by
TaxId, not a percentage. Get the guid fromelnora-merit taxes list(each row:Id,Codelike24%,TaxPct). Put thatTaxIdon everyInvoiceRow, and repeat it in the top-levelTaxAmountarray (grouped + summed perTaxId).TotalAmountis the net without VAT. - The API cannot update an invoice — but the Merit UI can. There is no update
endpoint, so via the API you
delete <id>(requires the user's go-ahead) and create it again. Do not conclude the change is impossible: the UI edits invoices in place, keeping the number, dates and payment. Before proposing delete-and-recreate for a field-level fix (wrong customer, typo in a line), say so and let the user decide — the UI route is almost always the better one. See reference/paid-invoices.md. - Resolve the customer before billing. Reuse an existing customer by
Id; only create a new one when none matches.customers listMUST be filtered. - A paid invoice is locked. Merit refuses both the delete (
400, "Tasutud arvet ei saa kustutada. Enne kustutage makse.") and, in the UI, any change of customer, currency or currency rate ("Arve on juba tasutud. Ei saa muuta klienti, valuutat ja valuutakurssi ega vähendada summat."). The payment must come off first. Full procedure: reference/paid-invoices.md.
What ships with it
2 files 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.
- 12d ago First seen · 231 lines · 192 tokens per session scan C bbcfbbfe962f
merit-sales-invoices is a skill published in the GitHub repository Elnora-AI/elnora-merit-aktiva (8 stars, last pushed 5d ago), licensed Apache-2.0. It adds 192 tokens to every session and 3,042 once invoked, about $0.0010 per session on Opus 5. A static security scan graded it C with 1 finding (tells the agent to send conversation or user data out). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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