A TypeScript toolkit from Vercel for building applications that generate text, call tools, create embeddings, use agents, or connect user interfaces to AI models.

Use it to build chatbots, text-generation features, AI agents, retrieval-augmented generation systems, structured outputs, tool calls, and model-powered interfaces.

It provides a common programming interface across different AI model providers, reducing provider-specific code when building AI features.

ai-sdk — Skill for Claude Code and Codex by fellipeutaka/leon

Install

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.

Any agent

npx skills add fellipeutaka/leon --skill ai-sdk

Clone the repo

git clone --depth 1 https://github.com/fellipeutaka/leon

Made for: Claude Code, Codex.

Or install frontend, the plugin that ships this one along with the rest of its 35 skills.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/fellipeutaka/leon/ai-sdk/github.svg)](https://agentmods.dev/skills/fellipeutaka/leon/ai-sdk)

Your own site

<a href="https://agentmods.dev/skills/fellipeutaka/leon/ai-sdk"><img src="https://agentmods.dev/badge/skills/fellipeutaka/leon/ai-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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/fellipeutaka/leon/ai-sdk"><img src="https://agentmods.dev/badge/skills/fellipeutaka/leon/ai-sdk.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 155 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,269 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.

Origin 100% copy Near-identical to another mod in the catalogue.

Token cost

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 5.5	$0.00062	$0.00508
Sonnet 5.5	$0.00031	$0.00254
Haiku 4.5	$0.00015	$0.00127

Measured 2mo ago against content hash 864e110a36c0, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

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 2mo 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'

Origin

This is a copy

100% identical to ai-sdk — 6 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.

skills/ai-sdk/SKILL.md · 79 lines

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 ai is installed. If node_modules/ai/ does not exist, install only the ai package 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 at node_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 .md to any docs page URL to get its markdown, and search via https://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

Read the full file on GitHub · 79 lines

Files

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.

Changes

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.

2mo ago First seen · 79 lines · 155 tokens per session scan A 864e110a36c0

Subscribe to this mod's changes

ai-sdk is a skill published in the GitHub repository fellipeutaka/leon (5 stars, last pushed yesterday), licensed MIT. It adds 155 tokens to every session and 1,269 once invoked, about $0.0006 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). It is 100% identical to ai-sdk, differing in 6 lines, and is treated as a copy.

Building agents Data and AI

ai-sdk next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
ai-sdkfellipeutaka/leon	Skill	5	yesterday	MIT	A	155	Claude Code, Codex
agent-platform-model-registrygoogle/skills	Skill	22k	yesterday	Apache-2.0	A	60	Claude Code, Codex
foundry-config-setupmicrosoft/agent-framework	Skill	15k	yesterday	MIT	A	65	Claude Code, Codex
google-cloud-solution-agentic-analytics-spark-knowledge-cataloggoogle/skills	Skill	22k	yesterday	Apache-2.0	A	132	Claude Code, Codex
training-checkwanshuiyin/Auto-claude-code-research-in-sleep	Skill	19k	3d ago	MIT	A	35	Claude Code
nemo-automodel-launcher-configNVIDIA/skills	Skill	3.9k	yesterday	Apache-2.0	A	30	Claude Code
finetuningmicrosoft/skills	Skill	3.2k	yesterday	MIT	A	132	Claude Code

ai-sdk