The LLMs.txt Files for Top Dev Tool Companies
We reviewed 30 well-known dev tool companies to see how they present their technical content for LLMs.
75% of these companies provided at least one llms.txt file, which presents the most important content as context for LLMs. We looked on each company’s primary site and documentation. Below is a summary table, with file length, contents, and notes. For analysis and takeaways, see Five LLM Content Strategies Revealed from Top Dev Tool Companies.
| Company | Lines | Links | Headings | Notes |
|---|---|---|---|---|
| Algolia | 5,108 | 5,106 | 0 | Long list of uncategorized links with no apparent prioritization |
| Auth0 | 1,482 | 1,456 | 4 | Just a list of links and no getting started guidance |
| Contentful | — | — | — | No llms.txt found |
| DigitalOcean | 858 | 576 | 72 | Heavy on beginner tutorials |
| Elastic | 159 | 118 | 12 | Short overview with solution-focused starting points |
| Firebase | 6,350 | 6,475 | 2 | Just a list of links |
| Gatsby | — | — | — | No llms.txt found |
| GitHub | 31 | 19 | 4 | Very short and simple |
| GitLab | — | — | — | No llms.txt found |
| Heroku | 137 | 92 | 15 | Minimalist, leaning toward product-focused |
| LaunchDarkly | 358 | 354 | 2 | List of links with minimal prioritization |
| Linode | — | — | — | No llms.txt found |
| MongoDB | 41 | 5 | 8 | Very simple global navigation |
| MongoDB docs | 25,340 | 24,618 | 187 | Huge, generated list organized by product (but not prioritized) |
| Netlify | 120 | 97 | 10 | Framework section is a good start to solution focus |
| ngrok | 829 | 663 | 3 | Real-world scenarios including 50 webhook guides |
| Okta | 1,222 | 1,189 | 12 | Also covers Auth0 |
| Plaid | 1,366 | 1,257 | 54 | Well-categorized, but feels like a site map |
| Plaid docs | 297 | 219 | 37 | Lists out product docs and not much more |
| Postman | 804 | 683 | 51 | Provides key areas before mostly site map |
| Postmark | 2,092 | 57 | 184 | Primarily inline documentation and examples |
| Render | 306 | 249 | 9 | Includes permissions section and highly curated categories |
| Render docs | 306 | 249 | 9 | Contents are identical to main site |
| Sanity | 552 | 549 | 2 | Single list, little detail (i.e., seven quick starts) |
| SendGrid | — | — | — | Included with Twilio |
| Snowflake | 44 | 8 | 9 | Prohibits AI training and provides simple entry point |
| Snyk | 1,073 | 1,068 | 2 | Appears to be a docs site map |
| Strapi | — | — | — | Returns HTML |
| Stripe | 355 | 269 | 29 | High-level, mostly product focused |
| Stripe docs | 614 | 510 | 27 | Explicit LLM agent instructions |
| Tailwind CSS | — | — | — | No llms.txt found |
| Twilio | 8,253 | 7,916 | 104 | File is huge and primarily organized by product |
| Twilio docs | 1,427 | 1,296 | 39 | Product-oriented organization |
| Vercel | 1,218 | 1,110 | 48 | Many categories by product area |
| Vonage | — | — | — | No llms.txt found |