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 ashish7802/awesome-api-skills --skill lemon-squeezygit clone --depth 1 https://github.com/ashish7802/awesome-api-skillsWrote 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/ashish7802/awesome-api-skills/lemon-squeezy)<a href="https://agentmods.dev/skills/ashish7802/awesome-api-skills/lemon-squeezy"><img src="https://agentmods.dev/badge/skills/ashish7802/awesome-api-skills/lemon-squeezy/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/ashish7802/awesome-api-skills/lemon-squeezy"><img src="https://agentmods.dev/badge/skills/ashish7802/awesome-api-skills/lemon-squeezy.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00000 | $0.00568 |
| Opus 5 | $0.00000 | $0.00284 |
| Sonnet 5 | $0.00000 | $0.00114 |
| Haiku 4.5 | $0.00000 | $0.00057 |
Grade A, and why
lemon-squeezy 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 10d 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 — 59 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Lemon Squeezy API Skill
Quick Start
Lemon Squeezy simplifies global tax compliance and recurring billing. The official @lemonsqueezy/lemonsqueezy.js SDK handles interactions cleanly.
npm install @lemonsqueezy/lemonsqueezy.js
Common Workflows
License Key Management
Lemon Squeezy uniquely offers built-in License Key generation for desktop apps. You can programmatically generate, activate, and validate license keys associated with a purchase.
Production Patterns
Syncing Orders
Use webhooks (order_created, subscription_created) to sync order data. When a user buys your SaaS, parse the custom_data object in the webhook payload (which should contain your internal user_id) to map the purchase.
Error Recovery
Handle rate limit errors (HTTP 429). The API is heavily cached but mutations are strictly limited. Catch generic HTTP errors using try/catch and inspect the error property returned by the SDK.
Security Notes
Webhook signatures in Lemon Squeezy use HMAC SHA256. Verify the X-Signature header against the raw request body using Node's crypto module to prevent spoofed payments.
Performance Considerations
Do not query the Lemon Squeezy API on every page load to check subscription status. Rely entirely on your database, which should be continually updated by incoming webhooks.
Testing Guidance
Lemon Squeezy provides a dedicated Test Mode. Use their test credit cards to simulate successful and failed subscription renewals.
Troubleshooting
If custom_data is missing in webhooks, ensure your frontend checkout URL explicitly appended the ?checkout[custom][user_id]=123 parameter during initialization.
References
Related Skills
Why use this skill
Use this when your agent works with lemon-squeezy — structured patterns beat pasted docs and prevent common hallucinations.
AI pitfalls
- Inventing webhook event names not in the vendor catalog
- Using secret keys in client-side or browser code
- Skipping signature verification on webhook payloads
What ships with it
7 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 10d ago First seen · 59 lines · 0 tokens per session scan A aa9a41586f82
lemon-squeezy is a skill published in the GitHub repository ashish7802/awesome-api-skills (13 stars, last pushed yesterday), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 568 tokens. 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 2026-08-30.
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