audit-monetization-iap SKILL.md skillA
This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.
audit-monetization-iap from kensaurus/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add kensaurus/skills/audit-monetization-iap@git:20260923.68c095ePins git:20260923.68c095e in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- kensaurus/skills
- Path
skills/audit-monetization-iap/SKILL.md- Versions recorded
- 4
- Latest version
- git:20260923.68c095e, committed Sep 23, 2026
- First version recorded
- Aug 18, 2026
- Size
- 5,244 bytes
- Repository stars
- 9
- License
- MIT
Read-only audit of mobile IAP and subscriptions (StoreKit 2, Play Billing, RevenueCat): receipt validation, restore, lifecycle sync, grace periods, entitlements. Use when "audit our IAP" or "restore purchases broken". Web → audit-payment-system.
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
# audit-monetization-iap — Store billing & entitlements **Degree of freedom: MIXED** — Phases 0–1 `[HIGH freedom]`; Phase 2 sandbox `[LOW freedom — run exactly]`, sandbox only: a real purchase charges a real card and cannot be undone from here. Read-only. Entitlements must match what users paid for: no unlock-without-pay, no paid-but-locked, no double-charge, no lost purchase on reinstall. **The two revenue killers are client-trusted entitlements (piracy) and broken restore (refunds + 1-star reviews).** > **Present findings. Do not patch store/server code until approved.** > Never test against real billing. ## This skill vs neighbors | Skill | Owns | |---|---| | **audit-monetization-iap** (this) | App Store / Play IAP, restore, store notifications | | `audit-payment-system` | Web money-movement, Stripe, ledgers, PCI | | `plan-mobile-readiness` | Submission paperwork (IAP via official billing is a checkbox) | | `plan-aso` | Store listing conversion, not receipt validation | | `plan-privacy-compliance` | Purchase-data in privacy labels | Do **not** fire for "Stripe webhook / double charge on the website" → `audit-payment-system`. ## How to reason …
Read the whole file at its exact version.
How to install
mdr add kensaurus/skills/audit-monetization-iap@sha256:084f247dd38379ecThe line at the top of this page pins the label git:20260923.68c095e, 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.
[](https://markdownregistry.com/a/art_mbs6gtnorzc3whfx)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Aug 18, 2026 and Sep 23, 2026, about one every 12 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260923.68c095e latest | 2026-09-23 | 68c095e | 5,244 B | A | view · diff |
| git:20260923.cf348bd | 2026-09-23 | cf348bd | 5,302 B | A | view · diff |
| git:20260819.170df67 | 2026-08-19 | 170df67 | 5,260 B | A | view · diff |
| git:20260818.274c4d7 | 2026-08-18 | 274c4d7 | 3,890 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (5244 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
kensaurus/skills · 9 stars · license MIT · pushed 2026-10-19 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_mbs6gtnorzc3whfx GET https://markdownregistry.com/api/v1/resolve?ref=kensaurus/skills/audit-monetization-iap GET https://markdownregistry.com/api/v1/blob/084f247dd38379ec9099b883c80174005165ac059c4c11eb131decdf4ca5b247
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.
More from kensaurus/skills
Every file in kensaurus/skills