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tanstack-form

tanstack-form is a skill for Claude Code from oakoss/agent-skills. It costs 85 tokens per session (1,387 once invoked), scanned A, original, no licence file.

A headless form-state library for React, meaning it manages form behavior without imposing the visual design. It supports synchronous and asynchronous validation, submissions, arrays, linked fields, reusable form parts, and common schema libraries.

In plain words
What is it for?
Use it to build forms with complex validation, delayed validation while users type, repeating fields, dependent fields, reusable form logic, and Zod, Valibot, ArkType, or Yup schemas.
Why use it?
It removes repetitive code for tracking fields, validating values, handling complex relationships, and submitting forms. Keeping behavior separate from appearance lets you use your own interface components.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter.

not rated 21repo +1 2mo ago A scan 85 tokens no licence

Good fit Use it to build forms with complex validation, delayed validation while users type, repeating fields, dependent fields, reusable form logic, and Zod, Valibot, ArkType, or Yup schemas.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/oakoss/agent-skills/tanstack-form
View source ↗ oakoss/agent-skills
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 oakoss/agent-skills --skill tanstack-form
Clone the repo
git clone --depth 1 https://github.com/oakoss/agent-skills

Made for: Claude Code.

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.

agentmods badge for tanstack-form

README.md
[![agentmods](https://agentmods.dev/badge/skills/oakoss/agent-skills/tanstack-form/github.svg)](https://agentmods.dev/skills/oakoss/agent-skills/tanstack-form)
Your own site
<a href="https://agentmods.dev/skills/oakoss/agent-skills/tanstack-form"><img src="https://agentmods.dev/badge/skills/oakoss/agent-skills/tanstack-form/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.

agentmods 80×15 button for tanstack-form

Your own site · 80×15
<a href="https://agentmods.dev/skills/oakoss/agent-skills/tanstack-form"><img src="https://agentmods.dev/badge/skills/oakoss/agent-skills/tanstack-form.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 85 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,387 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00085 $0.01387
Opus 5.5 $0.00034 $0.00555
Sonnet 5.5 $0.00017 $0.00277
Haiku 4.5 $0.00009 $0.00139

Measured 2mo ago against content hash 9f801a7cb356, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

tanstack-form 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 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.

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.

skills/tanstack-form/SKILL.md · 90 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

9 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.

  1. 2mo ago First seen · 90 lines · 85 tokens per session scan A 9f801a7cb356

Subscribe to this mod's changes

tanstack-form is a skill published in the GitHub repository oakoss/agent-skills (21 stars, last pushed 2mo ago), with no licence file. It adds 85 tokens to every session and 1,387 once invoked, about $0.0003 per session on Opus 5.5. 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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Related

tanstack-form compared with skills from other repositories

tanstack-form next to 6 skills from other repositories
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r3f-best-practiceszebbern/claude-code-guideSkill4.7k3d agoMITA74Claude Code, Codex
git-safetytamagui/tamaguiSkill14ktodayMITA0Claude Code