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 Frihet-io/frihet-mcp --skill invoices-and-quotesgit clone --depth 1 https://github.com/Frihet-io/frihet-mcpWrote 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/frihet-io/frihet-mcp/invoices-and-quotes)<a href="https://agentmods.dev/skills/frihet-io/frihet-mcp/invoices-and-quotes"><img src="https://agentmods.dev/badge/skills/frihet-io/frihet-mcp/invoices-and-quotes/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/frihet-io/frihet-mcp/invoices-and-quotes"><img src="https://agentmods.dev/badge/skills/frihet-io/frihet-mcp/invoices-and-quotes.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 | $0.00084 | $0.02358 |
| Opus 5.5 | $0.00034 | $0.00943 |
| Sonnet 5.5 | $0.00017 | $0.00472 |
| Haiku 4.5 | $0.00008 | $0.00236 |
Grade A, and why
invoices-and-quotes 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 2d 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 — 73 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Invoices & Quotes (invoices-and-quotes)
Respond in the user's language (English or Spanish). Keep proposals in chat strictly separate from saved Frihet records, and keep internal draft records strictly separate from issued or fiscally submitted documents.
Supported tools in this workflow
- Invoices (read-only):
list_invoices,get_invoice,search_invoices - Invoices (write, requires
confirm: true):create_invoice - Quotes (read-only):
list_quotes,get_quote - Quotes (write, requires
confirm: true):create_quote,delete_quote - Supporting read-only lookups:
get_business_context,list_clients,get_client,list_products,get_product
1. Reading and searching invoices and quotes
- Choose the right read tool:
- Use
list_invoices(status,clientId,from,to,seriesId,limit,offset,after) for filtered invoice lists. - Use
search_invoices(query,status,from,to,limit,offset,after) when searching by text query (such as client name or invoice number). - Use
get_invoice(id) to inspect full stored line items (items),notes,discountRate,taxRate, andtotalfor a single invoice, becauselist_invoicesandsearch_invoicesreturn summary rows without line items or notes. - Use
list_quotesandget_quote(id) analogously for quotes.
- Use
- Pagination truth (never present one page as all records):
- Always inspect
total,limit,offset, andnextCursor. - Exploratory browsing (default): If
nextCursoris present ortotal > data.lengthon a general listing/search query, report the first page immediately without looping through extra pages, and explicitly label the output as a partial page (e.g.,Showing 20 of 47 invoices). Never sum a partial page and claim it is the full period total. - Exhaustive, full-sort, or aggregate requests (exception): When the user explicitly asks for all matching records, a full sort across the entire set, or an exact sum across all pages, paginate using
after(nextCursor) oroffsetuntil all pages are retrieved (or until a clear safety limit is reached, disclosing the exact number of records fetched out oftotal) before computing the sort or total.
- Always inspect
- Stored totals and internal status boundary:
- Report
totalonly when present on the returned record; iftotalis absent, state that the calculated total is not stored on the summary row and callget_invoice/get_quoteif detail is needed. - Internal
statusandissueDatereflect workspace records only. They do not prove external email delivery, Peppol delivery receipts, EN 16931 validation, or e-invoicing (VeriFactu/AEAT/TicketBAI) submission or acceptance. If the user asks exclusively for regulated e-invoice delivery receipts or transmission status, explain that those external receipts are outside this connector without calling Frihet tools.
- Report
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.
- 2d ago First seen · 73 lines · 84 tokens per session scan A cbdd5bf5b6cd
invoices-and-quotes is a skill published in the GitHub repository Frihet-io/frihet-mcp (12 stars, last pushed today), licensed MIT. It adds 84 tokens to every session and 2,358 once invoked, about $0.0003 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 2026-10-28.
Other skills, from other repositories
escalation
Escalate a disputed refund to the billing lead.
expense-report
Generate a detailed expense breakdown by category for a given period. Use when the user asks for an expense report, spending summary, Ausgabenübersicht, cost analysis, or wants to understand where their money is going.
refunds
Process customer refunds.
create-invoice
Create and optionally send a new invoice to a client. Use when the user wants to invoice someone, bill a client, or create a new Rechnung or faktura.
monthly-reconciliation
Perform a complete monthly financial reconciliation - review all transactions, match invoices, check outstanding payments, and prepare for tax filing. Use when the user wants to close the month, do monthly bookkeeping, or perform a Monatsabschluss (zamknięcie miesiąca).
corporate-tax-registration
Prepare the corporate tax registration (Fragebogen zur steuerlichen Erfassung for a GmbH/UG) through a guided chat. Use when a newly founded GmbH/UG needs its Steuernummer, the user asks what to do after the notary appointment, or wants to register the company with the Finanzamt. Final submission happens in the Norman…