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 charlie947/life-automation-skills --skill invoice-chasergit clone --depth 1 https://github.com/charlie947/life-automation-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/charlie947/life-automation-skills/invoice-chaser)<a href="https://agentmods.dev/skills/charlie947/life-automation-skills/invoice-chaser"><img src="https://agentmods.dev/badge/skills/charlie947/life-automation-skills/invoice-chaser/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/charlie947/life-automation-skills/invoice-chaser"><img src="https://agentmods.dev/badge/skills/charlie947/life-automation-skills/invoice-chaser.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00123 | $0.02115 |
| Opus 5.5 | $0.00049 | $0.00846 |
| Sonnet 5.5 | $0.00025 | $0.00423 |
| Haiku 4.5 | $0.00012 | $0.00212 |
Grade A, and why
invoice-chaser 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 2mo 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 — 111 lines — stays where its author put it; the contents beside it link to each section on GitHub.
When to use this skill
Use it when the user wants their unpaid invoices found and the chase emails written for them:
- "Chase my overdue invoices" / "chase unpaid invoices"
- "Who owes me money?" / "what's outstanding?"
- "Do my AR follow-up" / "credit control run"
- "Draft reminders for anything late"
- Any request to find, age, and follow up on receivables across Xero + Gmail.
Do not use it to send email (Claude's Gmail connector cannot send, see below), to change anything inside Xero or Stripe, or to invent a figure, a penalty, or a payment term the accounting data does not contain.
What it needs (setup)
A receivables source and an email connector, both native Claude connectors, login-only OAuth, no build:
- Xero connector (read): pulls each contact's overdue balance and aging buckets, the organisation name and its base currency, via
get_contacts_and_receivables. This skill only ever reads from Xero. It never edits, voids, or reconciles anything. - or the Stripe connector (read): pulls open and overdue invoices at the invoice level, each with its amount, currency, due date, customer, and status. Where Xero reports at contact and aging level, Stripe reports per invoice. This skill only ever reads from Stripe. It never charges a card, voids an invoice, or changes anything in the account.
- Gmail connector (draft): searches sent mail for tone, and creates drafts. It cannot send. Every chase is left in Drafts for the user to review and send.
If a source or the email connector is not connected, tell the user exactly which one to enable and stop. Do not guess who owes what, and do not fabricate a figure.
The native Xero connector reports receivables at contact and aging level. Stripe reports at the invoice level. For specific invoice numbers and dates on Xero, paste your Xero aged-receivables report and the skill will use those.
Safety rules (HARD)
Money makes mistakes expensive. A wrong figure or a harsh chase to the wrong client costs real trust. These are not optional.
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.
- 2mo ago First seen · 111 lines · 0 tokens per session scan A c686cb27bfd5
invoice-chaser is a skill published in the GitHub repository charlie947/life-automation-skills (34 stars, last pushed 2mo ago), licensed MIT. It adds 123 tokens to every session and 2,115 once invoked, about $0.0005 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 2026-08-30.
invoice-chaser compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| invoice-chasercharlie947/life-automation-skills | Skill | 34 | 2mo ago | MIT | A | 123 | Claude Code, Codex |
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