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What is llms.txt?

llms.txt is a markdown file at the root of a website (/llms.txt) that tells AI models what the site is and links to the pages worth reading, in a form that is cheap for a language model to parse. It is a community proposal from Jeremy Howard (Answer.AI), first published on 3 Sep 2024, and it is most common on developer docs.

From our data: 174 of the 214 software vendors in our rankings publish one (81%), as of 3 Nov 2026. Across our 1,846-company benchmark (11 Oct 2026), 50% do.

What goes in it

An H1 with the site's name, a one-paragraph summary in a blockquote, then H2 sections that list links in markdown, each with a short note. A section called "Optional" marks links an agent can skip when it is short on context.

# Example Co

> Example Co makes invoicing software for freelancers. Plans start at $9 a month.

## Docs
- [Quickstart](https://example.com/docs/quickstart.md): send your first invoice
- [API reference](https://example.com/docs/api.md): every endpoint, with examples

## Company
- [Pricing](https://example.com/pricing): plans and limits, as of Nov 2026

## Optional
- [Changelog](https://example.com/changelog)

Does llms.txt work?

For search rankings, no. Google's AI optimization guide says Google Search doesn't use llms.txt or other AI text files, and none of OpenAI, Anthropic or Perplexity has said its crawler reads it. An Ahrefs study of 137,000 domains (published 15 Jun 2026) found 28% publish one and 97% of those files got no requests at all in a month.

Where it does help is with agents that read docs on purpose: coding assistants, docs tools and the agents developers point at a URL. That's why it's common on developer platforms and rare elsewhere. It's cheap to add, so add it, but don't expect it to move rankings.

llms.txt, llms-full.txt, robots.txt and sitemap.xml

robots.txt says which bots may crawl. sitemap.xml lists every URL for search engines. llms.txt is a short, curated reading list for a model. llms-full.txt, a common companion, puts your whole docs in one markdown file so an agent can load it in one request.

How to add one

  1. Write the summary first

    One paragraph that says what you do, who it's for and what it costs. Assistants often quote this line.

  2. List 10 to 40 key pages

    Docs, pricing, product pages, policies. Link the markdown version of each page if you have one.

  3. Serve it as text

    Return it with a 200 and a text/plain or text/markdown content type. A common bug is a 200 that returns your HTML 404 page.

  4. Generate it at build time

    Build it from the same source as your sitemap so it never goes stale.

  5. Offer markdown copies of pages

    Version 2 of the proposal (10 Aug 2026) adds markdown copies at the same URL plus .md, advertised with a link rel="alternate" type="text/markdown". Agents read markdown with far fewer tokens than HTML.

Vendors that publish llms.txt

174 of the vendors in our rankings, from our scan on 3 Nov 2026.

VendorCategoryFound at
DigitsRe-check liveaccounting softwaredigits.com/llms.txt
PilotRe-check liveaccounting softwarepilot.com/llms.txt
PuzzleRe-check liveaccounting softwarepuzzle.io/llms.txt
QuickBooksRe-check liveaccounting softwaredeveloper.intuit.com/llms.txt
TallyRe-check liveaccounting softwaretallysolutions.com/llms.txt
AnthropicRe-check liveAI model APIplatform.claude.com/llms.txt
CohereRe-check liveAI model APIcohere.com/llms.txt
Fireworks AIRe-check liveAI model APIdocs.fireworks.ai/llms.txt
Google Gemini APIRe-check liveAI model APIaistudio.google.com/llms.txt
GroqRe-check liveAI model APIconsole.groq.com/llms.txt
MistralRe-check liveAI model APImistral.ai/llms.txt
OpenAIRe-check liveAI model APIdevelopers.openai.com/llms.txt
OpenRouterRe-check liveAI model APIopenrouter.ai/llms.txt
ReplicateRe-check liveAI model APIreplicate.com/llms.txt
Together AIRe-check liveAI model APIwww.together.ai/llms.txt
xAIRe-check liveAI model APIdocs.x.ai/llms.txt
AshbyRe-check liveATSwww.ashbyhq.com/llms.txt
Breezy HRRe-check liveATSbreezy.hr/llms.txt
GreenhouseRe-check liveATSwww.greenhouse.com/llms.txt
iCIMSRe-check liveATSwww.icims.com/llms.txt
JazzHRRe-check liveATSwww.jazzhr.com/llms.txt
ManatalRe-check liveATSwww.manatal.com/llms.txt
PinpointRe-check liveATSwww.pinpointhq.com/llms.txt
SmartRecruitersRe-check liveATSwww.smartrecruiters.com/llms.txt
TeamtailorRe-check liveATSwww.teamtailor.com/llms.txt
WorkableRe-check liveATSwww.workable.com/llms.txt
Auth0Re-check liveauth providerauth0.com/llms.txt
Better AuthRe-check liveauth providerbetter-auth.com/llms.txt
ClerkRe-check liveauth providerclerk.com/llms.txt
DescopeRe-check liveauth providerwww.descope.com/llms.txt
FronteggRe-check liveauth providerfrontegg.com/llms.txt
FusionAuthRe-check liveauth providerfusionauth.io/llms.txt
KindeRe-check liveauth providerwww.kinde.com/llms.txt
OktaRe-check liveauth providerwww.okta.com/llms.txt
StytchRe-check liveauth providerstytch.com/llms.txt
SuperTokensRe-check liveauth providersupertokens.com/llms.txt
WorkOSRe-check liveauth providerworkos.com/llms.txt
Builder.ioRe-check liveCMSwww.builder.io/llms.txt
GhostRe-check liveCMSdocs.ghost.org/llms.txt
HygraphRe-check liveCMShygraph.com/llms.txt
PayloadRe-check liveCMSpayloadcms.com/llms.txt
PrismicRe-check liveCMSprismic.io/llms.txt
SanityRe-check liveCMSwww.sanity.io/llms.txt
StoryblokRe-check liveCMSwww.storyblok.com/llms.txt
StrapiRe-check liveCMSdocs.strapi.io/llms.txt
WebflowRe-check liveCMSdevelopers.webflow.com/llms.txt
AffinityRe-check liveCRMwww.affinity.co/llms.txt
AttioRe-check liveCRMattio.com/llms.txt
CloseRe-check liveCRMclose.com/llms.txt
CopperRe-check liveCRMwww.copper.com/llms.txt
folkRe-check liveCRMwww.folk.app/llms.txt
FreshworksRe-check liveCRMwww.freshworks.com/llms.txt
HubSpotRe-check liveCRMwww.hubspot.com/llms.txt
PipedriveRe-check liveCRMwww.pipedrive.com/llms.txt
SalesforceRe-check liveCRMdocs.salesforce.com/llms.txt
TwentyRe-check liveCRMtwenty.com/llms.txt
ZohoRe-check liveCRMwww.zoho.com/llms.txt
AppwriteRe-check livedatabase or backend platformappwrite.io/llms.txt
CockroachDBRe-check livedatabase or backend platformdocs.cockroachlabs.com/llms.txt
ConvexRe-check livedatabase or backend platformwww.convex.dev/llms.txt
MongoDBRe-check livedatabase or backend platformwww.mongodb.com/llms.txt
NeonRe-check livedatabase or backend platformneon.com/llms.txt
NhostRe-check livedatabase or backend platformdocs.nhost.io/llms.txt
PlanetScaleRe-check livedatabase or backend platformplanetscale.com/llms.txt
SupabaseRe-check livedatabase or backend platformsupabase.com/llms.txt
TursoRe-check livedatabase or backend platformturso.tech/llms.txt
UpstashRe-check livedatabase or backend platformupstash.com/llms.txt
XataRe-check livedatabase or backend platformxata.io/llms.txt
BigCommerceRe-check livee-commerce platformwww.bigcommerce.com/llms.txt
EcwidRe-check livee-commerce platformdocs.ecwid.com/llms.txt
MedusaRe-check livee-commerce platformmedusajs.com/llms.txt
ShopifyRe-check livee-commerce platformwww.shopify.com/llms.txt
ShopwareRe-check livee-commerce platformdeveloper.shopware.com/llms.txt
SquarespaceRe-check livee-commerce platformwww.squarespace.com/llms.txt
WixRe-check livee-commerce platformwww.wix.com/llms.txt
WooCommerceRe-check livee-commerce platformwoocommerce.com/llms.txt
BoldSignRe-check livee-signature toolboldsign.com/llms.txt
DocumensoRe-check livee-signature tooldocs.documenso.com/llms.txt
OneSpanRe-check livee-signature toolwww.onespan.com/llms.txt
PandaDocRe-check livee-signature toolwww.pandadoc.com/llms.txt
SigneasyRe-check livee-signature toolsigneasy.com/llms.txt
SignNowRe-check livee-signature toolwww.signnow.com/llms.txt
SignWellRe-check livee-signature toolwww.signwell.com/llms.txt
YousignRe-check livee-signature toolyoutrust.com/llms.txt
beehiivRe-check liveemail marketing platformwww.beehiiv.com/llms.txt
BrevoRe-check liveemail marketing platformdevelopers.brevo.com/llms.txt
Customer.ioRe-check liveemail marketing platformcustomer.io/llms.txt
KitRe-check liveemail marketing platformdevelopers.kit.com/llms.txt
KlaviyoRe-check liveemail marketing platformwww.klaviyo.com/llms.txt
LoopsRe-check liveemail marketing platformloops.so/llms.txt
MailchimpRe-check liveemail marketing platformmailchimp.com/llms.txt
MailerLiteRe-check liveemail marketing platformwww.mailerlite.com/llms.txt
ResendRe-check liveemail marketing platformresend.com/llms.txt
BirdRe-check liveemail or SMS APIbird.com/llms.txt
MailgunRe-check liveemail or SMS APIdocumentation.mailgun.com/llms.txt
MailtrapRe-check liveemail or SMS APImailtrap.io/llms.txt
PlivoRe-check liveemail or SMS APIwww.plivo.com/llms.txt
PostmarkRe-check liveemail or SMS APIpostmarkapp.com/llms.txt
SendGridRe-check liveemail or SMS APIwww.twilio.com/llms.txt
SinchRe-check liveemail or SMS APIdevelopers.sinch.com/llms.txt
TelnyxRe-check liveemail or SMS APItelnyx.com/llms.txt
TwilioRe-check liveemail or SMS APIwww.twilio.com/llms.txt
VonageRe-check liveemail or SMS APIwww.vonage.com/llms.txt
EpicorRe-check liveERPwww.epicor.com/llms.txt
ERPNextRe-check liveERPfrappe.io/llms.txt
InforRe-check liveERPwww.infor.com/llms.txt
KatanaRe-check liveERPkatanamrp.com/llms.txt
RootstockRe-check liveERProotstock.com/llms.txt
SAPRe-check liveERPdevelopers.sap.com/llms.txt
FreshdeskRe-check livehelp deskwww.freshworks.com/llms.txt
FrontRe-check livehelp deskfront.com/llms.txt
GladlyRe-check livehelp deskwww.gladly.ai/llms.txt
GorgiasRe-check livehelp deskwww.gorgias.com/llms.txt
IntercomRe-check livehelp deskwww.intercom.com/llms.txt
KustomerRe-check livehelp deskwww.kustomer.com/llms.txt
PlainRe-check livehelp deskwww.plain.com/llms.txt
ZendeskRe-check livehelp deskdeveloper.zendesk.com/llms.txt
ADPRe-check liveHRMSwww.adp.com/llms.txt
BambooHRRe-check liveHRMSwww.bamboohr.com/llms.txt
DarwinboxRe-check liveHRMSdarwinbox.com/llms.txt
DeelRe-check liveHRMSwww.deel.com/llms.txt
greytHRRe-check liveHRMSwww.greythr.com/llms.txt
HiBobRe-check liveHRMSwww.hibob.com/llms.txt
KekaRe-check liveHRMSwww.keka.com/llms.txt
RipplingRe-check liveHRMSwww.rippling.com/llms.txt
WorkdayRe-check liveHRMSdeveloper.workday.com/llms.txt
AxiomRe-check liveobservability toolaxiom.co/llms.txt
DatadogRe-check liveobservability toolwww.datadoghq.com/llms.txt
DynatraceRe-check liveobservability toolwww.dynatrace.com/llms.txt
GrafanaRe-check liveobservability toolgrafana.com/llms.txt
HoneycombRe-check liveobservability toolwww.honeycomb.io/llms.txt
New RelicRe-check liveobservability toolnewrelic.com/llms.txt
PagerDutyRe-check liveobservability tooldocs.pagerduty.com/llms.txt
SentryRe-check liveobservability toolsentry.io/llms.txt
AdyenRe-check livepayments platformwww.adyen.com/llms.txt
BraintreeRe-check livepayments platformwww.paypal.com/llms.txt
ChargebeeRe-check livepayments platformwww.chargebee.com/llms.txt
Checkout.comRe-check livepayments platformwww.checkout.com/llms.txt
MollieRe-check livepayments platformwww.mollie.com/llms.txt
PaddleRe-check livepayments platformdeveloper.paddle.com/llms.txt
PayPalRe-check livepayments platformwww.paypal.com/llms.txt
PolarRe-check livepayments platformpolar.sh/llms.txt
RazorpayRe-check livepayments platformrazorpay.com/llms.txt
SquareRe-check livepayments platformsquareup.com/llms.txt
StripeRe-check livepayments platformstripe.com/llms.txt
AmplitudeRe-check liveproduct analytics toolamplitude.com/llms.txt
FathomRe-check liveproduct analytics toolusefathom.com/llms.txt
HotjarRe-check liveproduct analytics toolcontentsquare.com/llms.txt
MixpanelRe-check liveproduct analytics toolmixpanel.com/llms.txt
PendoRe-check liveproduct analytics toolwww.pendo.io/llms.txt
PostHogRe-check liveproduct analytics toolposthog.com/llms.txt
SegmentRe-check liveproduct analytics toolwww.twilio.com/llms.txt
StatsigRe-check liveproduct analytics tooldocs.statsig.com/llms.txt
AsanaRe-check liveproject management toolasana.com/llms.txt
Atlassian (Jira)Re-check liveproject management toolwww.atlassian.com/llms.txt
ClickUpRe-check liveproject management toolclickup.com/llms.txt
LinearRe-check liveproject management toollinear.app/llms.txt
monday.comRe-check liveproject management toolmonday.com/llms.txt
NotionRe-check liveproject management toolwww.notion.com/llms.txt
SmartsheetRe-check liveproject management toolwww.smartsheet.com/llms.txt
WrikeRe-check liveproject management toolwww.wrike.com/llms.txt
Acuity SchedulingRe-check livescheduling tooldevelopers.acuityscheduling.com/llms.txt
Cal.comRe-check livescheduling toolcal.com/llms.txt
CalendlyRe-check livescheduling toolcalendly.com/llms.txt
Chili PiperRe-check livescheduling toolwww.chilipiper.com/llms.txt
MotionRe-check livescheduling toolwww.usemotion.com/llms.txt
SavvyCalRe-check livescheduling toolsavvycal.com/llms.txt
TidyCalRe-check livescheduling tooltidycal.com/llms.txt
YouCanBookMeRe-check livescheduling toolyoucanbook.me/llms.txt
DudaRe-check livewebsite builderwww.duda.co/llms.txt
DurableRe-check livewebsite builderdurable.com/llms.txt
FramerRe-check livewebsite builderwww.framer.com/llms.txt
GoDaddyRe-check livewebsite builderdeveloper.godaddy.com/llms.txt
HostingerRe-check livewebsite builderwww.hostinger.com/llms.txt

Check it yourself

A valid file starts with a # heading or contains markdown links. If you get HTML back, your server is answering with a page, not an llms.txt. Our scanner also looks on your docs host (docs.example.com/llms.txt).

curl -s https://example.com/llms.txt | head -20
Run the free check on your siteGet the full checklist

Questions

Where does llms.txt go?

At the root of your domain: https://example.com/llms.txt. Developer platforms often host it on their docs site instead, such as docs.example.com/llms.txt, and our scanner accepts either.

Is llms.txt an official standard?

No. It's a community proposal documented at llmstxt.org, not an IETF or W3C standard. It has spread fastest through docs platforms that generate it automatically.

Does Google use llms.txt?

Not for Search. Google's AI optimization guide says you don't need AI text files or extra markup to appear in Google Search, and that Search doesn't use them. Keeping one for other tools is fine.

What is llms-full.txt?

A companion file with the full text of your docs in one markdown file, so an agent can load everything in one request. It is a widely copied convention, not part of the llms.txt proposal itself.