claude-codex-settings is a collection of configurations and reusable extensions for Claude Code, OpenAI Codex, Cursor, and related coding tools. Developers use its skills, commands, hooks, agents, plugins, and MCP servers to shape coding-agent workflows and connect alternative model APIs. The catalogue entries are components of this collection that can be installed into supported coding tools.
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 fcakyon/claude-codex-settings --skill polar-billinggit clone --depth 1 https://github.com/fcakyon/claude-codex-settingsWrote 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/fcakyon/claude-codex-settings/polar-billing)<a href="https://agentmods.dev/skills/fcakyon/claude-codex-settings/polar-billing"><img src="https://agentmods.dev/badge/skills/fcakyon/claude-codex-settings/polar-billing.svg" alt="Measured on agentmods" 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 | $0.00029 | $0.05661 |
| Opus 5 | $0.00015 | $0.02831 |
| Sonnet 5 | $0.00006 | $0.01132 |
| Haiku 4.5 | $0.00003 | $0.00566 |
Grade A, and why
polar-billing 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 5d 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 — 822 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Polar Billing System
Comprehensive guide to Polar's billing infrastructure, covering entities, flows, Stripe integration, and benefit provisioning.
Quick Reference
Checkout → Payment → Order → Transaction → Benefits
↓
Subscription (if recurring)
↓
Subscription Cycle → Order → ...
Table of Contents
- Core Entities
- Entity Relationships
- Main Services
- Dramatiq Background Tasks
- Stripe Integration
- Subscription Lifecycle
- Proration System
- Benefits & Credits
- Dunning & Payment Retry
- Transaction Ledger
- Key File Locations
1. Core Entities
Checkout
File: server/polar/models/checkout.py
Shopping cart/payment session before order confirmation.
| Field | Type | Description |
|---|---|---|
status |
CheckoutStatus | open, expired, confirmed, succeeded, failed |
payment_processor |
PaymentProcessor | stripe, manual |
client_secret |
str | Unique identifier for frontend |
amount, currency |
int, str | Price in cents |
tax_amount, discount_amount |
int | Calculated amounts |
allow_trial, trial_end |
bool, datetime | Trial configuration |
seats |
int | For seat-based products |
Relationships: organization, customer, product, product_price, discount, subscription (for upgrades)
CheckoutLink
File: server/polar/models/checkout_link.py
Persistent URL that creates Checkout Sessions on visit.
| Field | Type | Description |
|---|---|---|
client_secret |
str | Unique identifier for the URL |
seats |
int | None | Preconfigured seat count for seat-based pricing |
discount_id |
UUID | None | Preset discount to apply |
trial_interval, trial_interval_count |
Trial config | Override product trial settings |
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.
- 5d ago First seen · 822 lines · 29 tokens per session scan A 29e8b87d2468
polar-billing is a skill published in the GitHub repository fcakyon/claude-codex-settings (1,133 stars, last pushed 2d ago), licensed Apache-2.0. It adds 29 tokens to every session and 5,661 once invoked, about $0.0001 per session on Opus 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 2026-09-03.
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