fcakyon/claude-codex-settings · plugins/polar-skills/skills/polar-billing/SKILL.md

polar-billing skillA

polar-billing is agent-read markdown (skill) from fcakyon/claude-codex-settings: This skill should be used when working on Polar billing system, Stripe integration, subscription lifecycle, checkout flows, or benefit provisioning..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add fcakyon/claude-codex-settings/polar-billing@git:20260827.a28ba93
Exact content
mdr add fcakyon/claude-codex-settings/polar-billing@sha256:29e8b87d2468951a

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_ueqm2gybqz42yh6m.svg)](https://markdownregistry.com/a/art_ueqm2gybqz42yh6m)

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Versions

versioncommittedcommitsizeaudit
git:20260827.a28ba93 latest2026-08-27 a28ba93 23,958 BA view · diff
git:20260720.d26d2c82026-07-20 d26d2c8 23,918 BA view · diff
git:20260401.d9d04a92026-04-01 d9d04a9 21,414 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, 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 (23958 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

fcakyon/claude-codex-settings · 1,132 stars · license Apache-2.0 · pushed 2026-09-06 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_ueqm2gybqz42yh6m
GET https://markdownregistry.com/api/v1/resolve?ref=fcakyon/claude-codex-settings/polar-billing
GET https://markdownregistry.com/api/v1/blob/29e8b87d2468951a1fc982a9c2d168b02d481d65446ee48aceeba2dee1ca17bd