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 agentmods add skills/fellipeutaka/leon/ai-sdknpx skills add fellipeutaka/leon --skill ai-sdkgit clone --depth 1 https://github.com/fellipeutaka/leonWrote 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/fellipeutaka/leon/ai-sdk)<a href="https://agentmods.dev/skills/fellipeutaka/leon/ai-sdk"><img src="https://agentmods.dev/badge/skills/fellipeutaka/leon/ai-sdk.svg" alt="Measured on agentmods" 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 | $0.00155 | $0.01269 |
| Opus 5 | $0.00077 | $0.00634 |
| Sonnet 5 | $0.00031 | $0.00254 |
| Haiku 4.5 | $0.00015 | $0.00127 |
Grade A, and why
ai-sdk scanned grade A 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 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -s https://ai-gateway.vercel.sh/v1/models | jq -r '.data[].id' This is a copy
100% identical to ai-sdk — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 79 lines — stays where its author put it; the contents beside it link to each section on GitHub.
What the AI SDK Is
The AI SDK by Vercel (the ai package on npm) is a TypeScript toolkit for building AI applications. It provides a unified API across model providers for text generation, structured output, tool calling, agents, embeddings, and framework UI integrations.
- Repository: https://github.com/vercel/ai
- Documentation: https://ai-sdk.dev/docs
Critical: Do Not Trust Your Own Memory
Whatever you remember about the AI SDK is likely outdated. The SDK changes frequently across versions - APIs are renamed, removed, and added. Your training data almost certainly contains obsolete APIs, deprecated patterns, and model IDs that no longer exist. UI hooks like useChat are among the most frequently changed APIs, so be especially careful with client code.
Never write AI SDK code from memory. Always verify every API, option, and pattern against the documentation and source code for the version that is actually installed in the project.
Use the Bundled, Version-Matched Docs
The ai package ships its full documentation and source code inside node_modules. These always match the installed version, so trust them over anything you remember.
- Ensure
aiis installed. Ifnode_modules/ai/does not exist, install only theaipackage using the project's package manager (e.g.pnpm add ai). Install provider packages (e.g.@ai-sdk/openai) and framework packages (e.g.@ai-sdk/react) later, when the task requires them. - Read and grep the bundled docs at
node_modules/ai/docs/and the source atnode_modules/ai/src/. - Provider and framework packages bundle their own docs at
node_modules/@ai-sdk/<name>/docs/. - If something isn't in the bundled docs, search https://ai-sdk.dev/docs. You can append
.mdto any docs page URL to get its markdown, and search viahttps://ai-sdk.dev/api/search-docs?q=your_query. - If you cannot find support for an answer in the docs or source, say so explicitly — do not guess.
AI Gateway: The Fastest Way to Start
What ships with it
5 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.
- 5d ago First seen · 79 lines · 155 tokens per session scan A 864e110a36c0
ai-sdk is a skill published in the GitHub repository fellipeutaka/leon (5 stars, last pushed 2d ago), licensed MIT. It adds 155 tokens to every session and 1,269 once invoked, about $0.0008 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). It is 100% identical to ai-sdk, differing in 0 lines, and is treated as a copy.
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