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 skeletorflet/opencode-supreme-setup --skill invoicegit clone --depth 1 https://github.com/skeletorflet/opencode-supreme-setupWrote 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/skeletorflet/opencode-supreme-setup/invoice)<a href="https://agentmods.dev/skills/skeletorflet/opencode-supreme-setup/invoice"><img src="https://agentmods.dev/badge/skills/skeletorflet/opencode-supreme-setup/invoice/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/skeletorflet/opencode-supreme-setup/invoice"><img src="https://agentmods.dev/badge/skills/skeletorflet/opencode-supreme-setup/invoice.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 | $0.00046 | $0.00349 |
| Opus 5.5 | $0.00018 | $0.00140 |
| Sonnet 5.5 | $0.00009 | $0.00070 |
| Haiku 4.5 | $0.00005 | $0.00035 |
Grade A, and why
invoice 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.
This is a copy
100% identical to invoice — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
What it actually says
Invoice Skill
Produce a single-page printable invoice.
Workflow
- Read DESIGN.md.
- Layout:
- Top band: studio brand on the left, "INVOICE" + number + date + due date on the right.
- Two columns: From (sender) / Bill to (recipient) with addresses.
- Project ref + payment-terms strip.
- Line items table: description / qty / unit / amount.
- Right-aligned totals block: subtotal, retainer, tax, total due.
- Payment instructions (bank, wire, ACH).
- Thank-you note + signature line.
- Print stylesheet @media print to remove backgrounds.
Output contract
<artifact identifier="invoice-name" type="text/html" title="Invoice">
<!doctype html>...</artifact>
What ships with it
3 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.
- 1mo ago First seen · 49 lines · 46 tokens per session scan A 6c12ddb7b2b9
invoice is a skill published in the GitHub repository skeletorflet/opencode-supreme-setup (48 stars, last pushed 5mo ago), licensed MIT. It adds 46 tokens to every session and 349 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to invoice, differing in 0 lines, and is treated as a copy.
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