wip-over-under-billing SKILL.md skillA

wip-over-under-billing from ryanduguid/australian-accounting-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add ryanduguid/australian-accounting-skills/wip-over-under-billing@git:20261019.715fdb9

Pins git:20261019.715fdb9 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
ryanduguid/australian-accounting-skills
Path
.claude/skills/wip-over-under-billing/SKILL.md
Versions recorded
6
Latest version
git:20261019.715fdb9, committed Oct 19, 2026
First version recorded
Aug 29, 2026
Size
18,322 bytes
Repository stars
3
License
Apache-2.0

Use when preparing or reviewing a construction work-in-progress schedule under AASB 15: measuring progress by input or output method, cost to complete, contract assets and contract liabilities, variations and claims as constrained variable consideration, and tying the schedule to revenue and the general ledger.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# WIP over/under billing

Build a contract-by-contract WIP schedule that measures progress under AASB 15, classifies each contract as a contract asset or a contract liability, and ties the totals to revenue and the general ledger. The output is a reviewed schedule with a documented tie-out, not posted journals.

## Inputs needed

1. Contract register: signed contracts, approved variations, and any contracts with the same customer or its related parties entered into at or near the same time (needed for the AASB 15 para 17 combination test)
2. For each contract: original contract sum, approved variation prices, and unpriced or disputed scope changes with the evidence of entitlement (superintendent instructions, correspondence, determinations)
3. Costs incurred to date and forecast cost to complete per contract, split into direct labour, materials, subcontractors, plant and allocated contract overhead, separately identifying costs of inefficiency, rework and wastage and materials delivered but not yet installed (see `contract-cost-tracking`)
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add ryanduguid/australian-accounting-skills/wip-over-under-billing@sha256:4c66fe213cf9aa1e

The line at the top of this page pins the label git:20261019.715fdb9, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_7yiyot4tyddstinw.svg)](https://markdownregistry.com/a/art_7yiyot4tyddstinw)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 6 versions of this file, between Aug 29, 2026 and Oct 19, 2026, about one every 10 days.

versioncommittedcommitsizeaudit
git:20261019.715fdb9 latest2026-10-19 715fdb9 18,322 BA view · diff
git:20260922.b533e5a2026-09-22 b533e5a 13,800 BA view · diff
git:20260913.69189462026-09-13 6918946 13,409 BA view · diff
git:20260912.87fc7902026-09-12 87fc790 13,407 BA view · diff
git:20260909.35003112026-09-09 3500311 12,751 BA view · diff
git:20260829.e24efa22026-08-29 e24efa2 12,708 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (18322 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

ryanduguid/australian-accounting-skills · 3 stars · license Apache-2.0 · pushed 2026-10-21 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_7yiyot4tyddstinw
GET https://markdownregistry.com/api/v1/resolve?ref=ryanduguid/australian-accounting-skills/wip-over-under-billing
GET https://markdownregistry.com/api/v1/blob/4c66fe213cf9aa1e1a58f35f87765209aaf8b7a1ac695a72bebdbe351b20fe9c

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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