LLM Documentation (llms.txt)

Many libraries provide LLM-optimized documentation at /llms.txt following the llms.txt standard.

Available Sources

Library llms.txt URL Full Version

shadcn/ui https://ui.shadcn.com/llms.txt

Effect https://effect.website/llms.txt https://effect.website/llms-full.txt

Drizzle ORM https://orm.drizzle.team/llms.txt https://orm.drizzle.team/llms-full.txt

TanStack https://tanstack.com/llms.txt

Better Auth https://www.better-auth.com/llms.txt

Elysia https://elysiajs.com/llms.txt

Bun https://bun.sh/llms.txt

Hono https://hono.dev/llms.txt https://hono.dev/llms-full.txt

Expo https://docs.expo.dev/llms.txt

React Native https://reactnative.dev/llms.txt

Zod https://zod.dev/llms.txt

Prisma https://www.prisma.io/llms.txt

tRPC https://trpc.io/llms.txt

Turborepo https://turbo.build/llms.txt

Supabase https://supabase.com/llms.txt

Vercel https://vercel.com/llms.txt

Stripe https://stripe.com/llms.txt

Clerk https://clerk.com/llms.txt

Vitest https://vitest.dev/llms.txt

When to Use llms.txt

Use llms.txt when:

• Starting work with a library - Get the architectural overview first

• Context7 lacks recent updates - llms.txt is always current

• You need official API reference links - llms.txt links to authoritative docs

• Understanding library structure - See what sections/features exist

llms.txt vs Context7

Aspect llms.txt Context7

Source Official project files Indexed documentation

Granularity Full overview + links Query-based chunks

Freshness Always current Depends on indexing

Best for Architecture overview Specific API questions

Recommended workflow: Start with llms.txt for overview, then use Context7 for specific implementation details.

Workflow

1. Fetch llms.txt for Overview

Use Firecrawl to fetch the llms.txt file:

firecrawl_scrape({ url: "https://effect.website/llms.txt", formats: ["markdown"] })

This returns a structured overview with:

• Project description

• Key documentation sections

• Links to important resources

2. Fetch Full Documentation (if available)

For deeper context, some libraries provide llms-full.txt :

firecrawl_scrape({ url: "https://effect.website/llms-full.txt", formats: ["markdown"] })

Note: Full versions can be large. Only fetch when you need comprehensive documentation.

3. Follow Up with Context7

After understanding the structure from llms.txt, query specific topics:

context7_resolve_library_id({ libraryName: "effect typescript" }) → /effect-ts/effect

context7_get_library_docs({ libraryId: "/effect-ts/effect", topic: "schema validation with branded types" })

Quick Reference

Frontend & UI

firecrawl_scrape({ url: "https://ui.shadcn.com/llms.txt" }) # shadcn/ui firecrawl_scrape({ url: "https://tanstack.com/llms.txt" }) # TanStack (Router, Query, Table)

TypeScript Ecosystem

firecrawl_scrape({ url: "https://effect.website/llms.txt" }) # Effect TypeScript firecrawl_scrape({ url: "https://zod.dev/llms.txt" }) # Zod schema validation firecrawl_scrape({ url: "https://trpc.io/llms.txt" }) # tRPC typesafe APIs

Web Frameworks

firecrawl_scrape({ url: "https://elysiajs.com/llms.txt" }) # Elysia (Bun framework) firecrawl_scrape({ url: "https://hono.dev/llms.txt" }) # Hono (Web Standards) firecrawl_scrape({ url: "https://bun.sh/llms.txt" }) # Bun runtime

Database & ORM

firecrawl_scrape({ url: "https://orm.drizzle.team/llms.txt" }) # Drizzle ORM firecrawl_scrape({ url: "https://www.prisma.io/llms.txt" }) # Prisma ORM firecrawl_scrape({ url: "https://supabase.com/llms.txt" }) # Supabase

Authentication

firecrawl_scrape({ url: "https://www.better-auth.com/llms.txt" }) # Better Auth firecrawl_scrape({ url: "https://clerk.com/llms.txt" }) # Clerk

Mobile & React Native

firecrawl_scrape({ url: "https://docs.expo.dev/llms.txt" }) # Expo firecrawl_scrape({ url: "https://reactnative.dev/llms.txt" }) # React Native

Infrastructure & Deployment

firecrawl_scrape({ url: "https://vercel.com/llms.txt" }) # Vercel firecrawl_scrape({ url: "https://turbo.build/llms.txt" }) # Turborepo

Payments

firecrawl_scrape({ url: "https://stripe.com/llms.txt" }) # Stripe

Testing

firecrawl_scrape({ url: "https://vitest.dev/llms.txt" }) # Vitest

Best Practices

• Check llms.txt first - Before diving into code, understand the library structure

• Use the registry - Reference llm-docs-registry.yaml for known URLs

• Prefer llms.txt over scraping random pages - It's curated for LLM consumption

• Combine sources - llms.txt → Context7 → specific doc pages

• Cache when appropriate - For repeated work, save llms.txt content locally