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 frankxai/claude-skills-library --skill claude-sdkgit clone --depth 1 https://github.com/frankxai/claude-skills-libraryWrote 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/frankxai/claude-skills-library/claude-sdk)<a href="https://agentmods.dev/skills/frankxai/claude-skills-library/claude-sdk"><img src="https://agentmods.dev/badge/skills/frankxai/claude-skills-library/claude-sdk/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/frankxai/claude-skills-library/claude-sdk"><img src="https://agentmods.dev/badge/skills/frankxai/claude-skills-library/claude-sdk.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00059 | $0.04103 |
| Opus 5 | $0.00030 | $0.02051 |
| Sonnet 5 | $0.00012 | $0.00821 |
| Haiku 4.5 | $0.00006 | $0.00410 |
Grade B, and why
claude-sdk scanned grade B with 1 finding 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 12d 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.
Recursive force deletemediumDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
dangerous = ["rm -rf", ":(){ :|:& };:", "dd if="] Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.
The source is not reproduced here
A licence we could not identify
The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.
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.
- 12d ago First seen · 649 lines · 59 tokens per session scan B 77ef5841b1fb
claude-sdk is a skill published in the GitHub repository frankxai/claude-skills-library (39 stars, last pushed 3d ago), with no licence file. It adds 59 tokens to every session and 4,103 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it B with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other skills, from other repositories
token-saver
Token optimization guide for Claude Code. This skill should be used when the user wants to reduce API costs, learn model routing strategies, or understand how to use free/cheaper tools (Ollama, Haiku) instead of burning expensive Claude tokens on routine tasks. Triggers on: save tokens, reduce costs, token tips, cheap…
quick-win-session
Generates guided first-action flows that help users achieve a meaningful result within 60 seconds to boost retention. Use when user wants quick win onboarding, time-to-value optimization, or first success moments.
go
Execute the ADR-driven 4-phase development workflow (preflight, implementation, formatting, release). Use whenever the user says 'itp go'.
calendar-event-manager
Create macOS Calendar events with tiered sound alarms and paired Reminders so events are never missed across Mac and iOS.
claude-handoff
A handoff tool that prepares a summary of the current conversation for another coding agent and starts that agent in the background.
notion-cli
Access Notion via the 4ier/notion-cli Go binary. Use when user wants to search Notion, query databases, read pages, export data.