What is sanity-best-practices?

A set of practical guidelines for building applications with Sanity, a content management system for structured website content.

Sanity schemas, GROQ queries, TypeScript types, live previews, images, rich text, localization, migrations, and framework integrations.

It helps avoid common mistakes when designing content, querying it, connecting Sanity to a frontend, or maintaining a project.

How CoreyMoen/mast-sanity configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to CoreyMoen/mast-sanity. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/CoreyMoen/mast-sanity/main/.claude/skills/sanity-best-practices/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/CoreyMoen/mast-sanity

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/coreymoen/mast-sanity/sanity-best-practices/github.svg)](https://agentmods.dev/skills/coreymoen/mast-sanity/sanity-best-practices)

Your own site

<a href="https://agentmods.dev/skills/coreymoen/mast-sanity/sanity-best-practices"><img src="https://agentmods.dev/badge/skills/coreymoen/mast-sanity/sanity-best-practices/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/coreymoen/mast-sanity/sanity-best-practices"><img src="https://agentmods.dev/badge/skills/coreymoen/mast-sanity/sanity-best-practices.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 160 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 944 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 89% 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	$0.00160	$0.00944
Opus 5.5	$0.00064	$0.00378
Sonnet 5.5	$0.00032	$0.00189
Haiku 4.5	$0.00016	$0.00094

Measured 2mo ago against content hash 0c214846486b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

sanity-best-practices 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.

Origin

This is a copy

89% identical to sanity-best-practices — 15 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.

.claude/skills/sanity-best-practices/SKILL.md · 80 lines

How it starts

The opening of the file, as written. The whole thing — 80 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Sanity Best Practices

Comprehensive best practices and integration guides for Sanity development, maintained by Sanity. Use the quick reference below to load only the one or two topic files that match the task.

When to Apply

Reference these guidelines when:

Setting up a new Sanity project or onboarding
Integrating Sanity with a frontend framework (Next.js, Nuxt, Astro, Remix, SvelteKit, Hydrogen)
Writing GROQ queries or optimizing performance
Designing content schemas
Implementing Visual Editing and live preview
Working with images, Portable Text, or page builders
Configuring Sanity Studio structure
Setting up TypeGen for type safety
Implementing localization
Migrating content from other systems
Building custom apps with the Sanity App SDK
Managing infrastructure with Blueprints
Automating content workflows with Sanity Functions

Global Rules

Let Sanity generate _id values for ordinary documents. Do not create deterministic UUIDs, slug-derived IDs, or legacy-system IDs when creating documents.
Model relationships with reference fields, then resolve related documents with GROQ lookups, source-key fields, or returned _id values from created documents.
Use explicit document IDs mainly for singleton documents controlled by Studio Structure, including localized singletons such as homePage-en.

Quick Reference

Integration Guides

get-started - Interactive onboarding for new Sanity projects
nextjs - Next.js App Router, Live Content API, standalone Studio
nuxt - Nuxt integration with @nuxtjs/sanity
angular - Angular integration with @sanity/client, signals, resource API
astro - Astro integration with @sanity/astro
remix - React Router / Remix integration
svelte - SvelteKit integration with @sanity/svelte-loader
hydrogen - Shopify Hydrogen with Sanity
project-structure - Standalone Studio and monorepo patterns
app-sdk - Custom applications with Sanity App SDK
blueprints - Infrastructure as Code: blueprint files, stacks, plan/deploy workflow, error recovery, CI deploys
functions - Automating content workflows with Sanity Functions

Read the full file on GitHub · 80 lines

Files

What ships with it

24 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 · 80 lines · 160 tokens per session scan A 0c214846486b

Subscribe to this mod's changes

sanity-best-practices is a skill published in the GitHub repository CoreyMoen/mast-sanity (22 stars, last pushed 2mo ago), licensed MIT. It adds 160 tokens to every session and 944 once invoked, about $0.0006 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 89% identical to sanity-best-practices, differing in 15 lines, and is treated as a copy.

Backend and APIs Localization

sanity-best-practices next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
sanity-best-practicesCoreyMoen/mast-sanity	Skill	22	2mo ago	MIT	A	160	Claude Code
contentfulTerminalSkills/skills	Skill	192	yesterday	Apache-2.0	A	99	Claude Code, Codex
heygenHybridAIOne/hybridclaw	Skill	159	yesterday	MIT	A	25	Claude Code
webiny-v5-to-v6-migrationwebiny/webiny-js	Skill	8.0k	yesterday	none	A	75	Claude Code, Codex
contentful-cmsmonkilabs/opencastle	Skill	80	yesterday	MIT	A	41	Claude Code, Codex
backend-internationalizationj4flmao/agent-skills	Skill	38	3d ago	MIT	A	86	Claude Code, Codex
email-template-builderricneves-ai/flowgrammers-skills	Skill	117	1mo ago	MIT	A	75	Claude Code, Codex

mast-sanity: Skill for Claude Code