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 alebgl77/claude-inc --skill invoice-chasegit clone --depth 1 https://github.com/alebgl77/claude-incWrote 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/alebgl77/claude-inc/invoice-chase)<a href="https://agentmods.dev/skills/alebgl77/claude-inc/invoice-chase"><img src="https://agentmods.dev/badge/skills/alebgl77/claude-inc/invoice-chase.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00000 | $0.01428 |
| Opus 5 | $0.00000 | $0.00714 |
| Sonnet 5 | $0.00000 | $0.00286 |
| Haiku 4.5 | $0.00000 | $0.00143 |
Grade A, and why
invoice-chase 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 8d 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 — 100 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Invoice Chase — Debt Chaser
"Chase late invoices."
Unpaid invoices are interest-free loans you never agreed to make. This skill gets the money in while keeping the client.
When to use
- "Three clients haven't paid since March — get the money in."
- "This invoice is 45 days overdue, what do I send?" — any single stubborn invoice.
- "Here's my invoice export / AR aging — who do I chase first?"
- Receivables creeping past 30 days while the owner "doesn't want to be annoying."
- Standing up a weekly collections routine so lateness stops compounding.
Workflow
- Build the aging ladder. From pasted data or CSV (client, invoice #, amount, issue date, due date, last contact), compute days overdue with code and bucket: current, 1–30, 31–60, 61–90, 90+.
- Prioritize. Rank by amount × age. Most of the money usually sits in three invoices — name them as this week's targets.
- Assign each invoice a rung based on days overdue and chase history. Never skip a rung the client hasn't actually received; pressure without a paper trail reads as hostility.
- Draft the emails from the templates below, personalized: their name, the exact amount, the real due date, and one specific detail proving a human wrote it.
- Apply the tone rules.
- Assume incompetence before malice — rung 1 always presumes an oversight.
- Escalate consequences, never insults. The facts get harder; the manners don't change.
- The money and the relationship are separate threads: chase firmly, stay warm.
- Every message offers one easy exit: confirm a date, pay a part, or flag a dispute.
- Open the chase log. Every action and response gets a row — it is both memory and, if things ever go legal, evidence.
- Set the cadence. Rungs 7 days apart from the first overdue day; phone at 60+ days or after a silent final notice. Diarize the next action before closing the session.
- Know when to fold. Recommend write-off when chasing costs more than the balance: client dark after final notice plus a call, a dispute with no resolution path, or an amount worth less than the hours to collect it. Pair every write-off with stop-work and prepayment terms going forward.
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.
- 8d ago First seen · 100 lines · 0 tokens per session scan A 8bb961cf73c1
invoice-chase is a skill published in the GitHub repository alebgl77/claude-inc (14 stars, last pushed 5d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,428 tokens. 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 2026-08-30.
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