Tanstack Form

OrganizationPopular

exceptionless

tanstack-form

Build Svelte forms with TanStack Form, Zod validation, and API error mapping.

Overview

Publisher	exceptionless
Repository	`Exceptionless`
Skill name	`tanstack-form`
Stars	2.5K
Forks	508
Bundled files	Instructions only
License	Apache-2.0
Links	Skill source Repository Homepage

Markdown instructions
A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.
Works with any LLM
AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.
Self-contained
Everything the model needs lives in the instructions — no extra files to sync.
Open source
Published by exceptionless on GitHub. Read the source before you install it.

Installation

Install the Tanstack Form AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

Open the app and go to Plugins → Skills.
Choose "Install from GitHub".
Paste the skill folder URL below and confirm.
https://github.com/exceptionless/Exceptionless/tree/main/.agents/skills/tanstack-form
Enable the skill in any chat where you want it available.

Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.

Install in another agent

Any agent that reads the Agent Skills format can use this skill — copy the folder into that agent's skills directory.

Claude Code — .claude/skills

git clone --depth 1 https://github.com/exceptionless/Exceptionless.git /tmp/Exceptionless
mkdir -p .claude/skills
cp -r /tmp/Exceptionless/.agents/skills/tanstack-form .claude/skills/tanstack-form

Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Tanstack Form in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads Tanstack Form on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so Tanstack Form is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

Loaded only when it is needed
The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.
Switch models mid-chat
Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

TanStack Form

Use @tanstack/svelte-form with feature schemas derived from $generated/schemas. Extend schemas in feature-owned files; do not edit generated output.

Current examples

src/Exceptionless.Web/ClientApp/src/routes/(auth)/login/+page.svelte: form creation, submission, field composition, and submitting state.
src/Exceptionless.Web/ClientApp/src/lib/features/auth/schemas.ts: generated schema exports and feature-specific validation.
src/Exceptionless.Web/ClientApp/src/lib/features/shared/validation.ts: ariaInvalid, mapFieldErrors, and problemDetailsToFormErrors.

Follow the current implementations rather than duplicating form infrastructure. Map API ProblemDetails into field/form errors, retain entered values after failure, and close dialogs only after successful submission.

Use installed Field components with associated labels and validation attributes. Disable duplicate submission while pending. See shadcn-svelte for component composition.

Submission lifecycle

Define typed default values and extend generated Zod schemas for feature-specific or cross-field constraints.
Use the current form's synchronous validation hook for schema errors and asynchronous submission hook for the server operation. Follow the referenced implementation's hook contracts rather than moving API calls between hooks blindly.
Await the operation. Map expected ProblemDetails with problemDetailsToFormErrors; provide a form-level error for an unexpected failure without exposing internal details.
Connect field state through ariaInvalid and mapFieldErrors. Display form-level errors as well as field errors so non-field failures remain visible.
Keep pending state active through required work. Preserve values on failure; reset, navigate, or close a dialog only after success and any required cache reconciliation.

Check invalid input, server rejection, repeated submission, and successful completion. A dialog closing is not by itself proof that the save succeeded.

Frequently asked questions

What does the Tanstack Form AI skill do?

Build Svelte forms with TanStack Form, Zod validation, and API error mapping.

Why use Tanstack Form on TypingMind?

Because you install it once and use it with any model. Tanstack Form is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Tanstack Form in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/exceptionless/Exceptionless/tree/main/.agents/skills/tanstack-form. TypingMind reads its SKILL.md and installs it as a skill you can enable per chat.

Which AI models can use Tanstack Form?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Tanstack Form?

As many as you like. As long as a model supports skills, you can use Tanstack Form with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Tanstack Form AI skill free?

Yes. It is published on GitHub by exceptionless under the Apache-2.0 license. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

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Overview

Installation

Install in TypingMind

Install in another agent

Use it in TypingMind

Works with any AI model

Skill instructions

TanStack Form

Current examples

Submission lifecycle

Frequently asked questions

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