How do I install the Invoice Ledger skill?

Run npx skillmds@latest add sahit-sai/invoice-ledger in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

What does the Invoice Ledger skill do?

Age invoice CSV exports into overdue buckets and cash-collection summaries. It is listed under Data & Analytics on SkillMD.

Is Invoice Ledger safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Invoice Ledger?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Invoice Ledger free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Invoice Ledger?

sahit-sai (@sahit-sai) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Invoice Ledger by sahit-sai — Agent Skill

Name: Invoice Ledger
Author: sahit-sai

File contents

invoice-ledger

Purpose

Summarize accounts receivable from exported invoice CSVs without moving finance data into SaaS tools.

Runbook

Provide a CSV with invoice id, client, due date, amount, and either status or paid date.
Run scripts/age.py to bucket open invoices into current, 1-30, 31-60, and 61+ day overdue ranges.
Use the output to prioritize follow-up, not to overwrite the source ledger.
Keep reports local because invoice data may contain sensitive customer information.

Stop conditions

Abort if the CSV columns do not map cleanly to due date and amount.
Abort before contacting customers based on stale or duplicate invoice exports.
Abort if the active variant cannot keep the finance data local.

Output format

Aging buckets by amount
Open invoice list with overdue days
Collected vs open totals

Example invocations

python3 skills/invoice-ledger/scripts/age.py invoices.csv --markdown
cat invoices.csv | python3 skills/invoice-ledger/scripts/age.py - --today 2026-04-01

Frequently asked questions

Invoice Ledger