Developer, SaaS, And API ranking
Best and worst sites for AI agents to read api documentation.
Ranked from recent CrawlDex observations. Last verified Jul 8, 2026. Based on 100 observations.
Publication status
Search-ready- 100
- ranked websites
- 100
- best AES
- 0
- hardest AES
- 21%
- board handoff share
Search indexing requires at least eight recent qualifying rows. This page still serves the full table for agents and humans when the count is lower.
Ranked table
All ranked sites for agents trying to read api documentation
Outcome signal is shown on the same 0-100 scale as the public AES board until split outcome rates are exposed by the board feed.
| Rank | Site | AES | Outcome signal | Top blocker | Last verified |
|---|---|---|---|---|---|
| 1 | Apollographql apollographql.com | 100 | 100% | none observed | Jun 9, 2026 |
| 2 | Assemblyai assemblyai.com | 100 | 100% | none observed | Jun 9, 2026 |
| 3 | Chargebee chargebee.com | 100 | 100% | login walls | Jun 9, 2026 |
| 4 | Discord discord.com | 100 | 100% | none observed | Jun 9, 2026 |
| 5 | Github github.com | 100 | 100% | none observed | Jun 9, 2026 |
| 6 | Groq groq.com | 100 | 100% | hidden or obstructing modals | Jun 9, 2026 |
| 7 | Hasura hasura.io | 100 | 100% | none observed | Jun 9, 2026 |
| 8 | Here here.com | 100 | 100% | hidden or obstructing modals | Jun 9, 2026 |
| 9 | Mistral mistral.ai | 100 | 100% | none observed | Jun 9, 2026 |
| 10 | Mongodb mongodb.com | 100 | 100% | hidden or obstructing modals | Jun 9, 2026 |
| 11 | Pinecone pinecone.io | 100 | 100% | hidden or obstructing modals | Jun 9, 2026 |
| 12 | Posthog posthog.com | 100 | 100% | none observed | Jun 9, 2026 |
| 13 | Redis redis.io | 100 | 100% | hidden or obstructing modals | Jun 9, 2026 |
| 14 | Squareup squareup.com | 100 | 100% | account or portal handoff | Jun 9, 2026 |
| 15 | Stoplight stoplight.io | 100 | 100% | hidden or obstructing modals | Jun 9, 2026 |
| 16 | Twilio twilio.com | 100 | 100% | none observed | Jun 20, 2026 |
| 17 | Upstash upstash.com | 100 | 100% | public docs available | Jun 21, 2026 |
| 18 | Adyen adyen.com | 80 | 80% | public url verified | Jul 8, 2026 |
| 19 | Airtable airtable.com | 80 | 80% | login walls | Jun 9, 2026 |
| 20 | Algolia algolia.com | 80 | 80% | login walls | Jun 9, 2026 |
| 21 | Amazon amazon.com | 80 | 80% | login walls | Jun 9, 2026 |
| 22 | Amplitude amplitude.com | 80 | 80% | public url verified | Jul 7, 2026 |
| 23 | Anthropic anthropic.com | 80 | 80% | login walls | Jun 9, 2026 |
| 24 | Atlassian atlassian.com | 80 | 80% | login walls | Jun 9, 2026 |
| 25 | Bitbucket bitbucket.org | 80 | 80% | login walls | Jun 9, 2026 |
| 26 | Braintreepayments braintreepayments.com | 80 | 80% | login walls | Jun 9, 2026 |
| 27 | Browserbase browserbase.com | 80 | 80% | public url verified | Jul 7, 2026 |
| 28 | Cockroachlabs cockroachlabs.com | 80 | 80% | login walls | Jun 9, 2026 |
| 29 | Cohere cohere.com | 80 | 80% | login walls | Jun 9, 2026 |
| 30 | Datadog datadog.com | 80 | 80% | login walls | Jun 9, 2026 |
| 31 | Deepgram deepgram.com | 80 | 80% | login walls | Jun 9, 2026 |
| 32 | Digitalocean digitalocean.com | 80 | 80% | login walls | Jun 9, 2026 |
| 33 | Docker docker.com | 80 | 80% | public url verified | Jun 27, 2026 |
| 34 | Elastic elastic.co | 80 | 80% | login walls | Jun 9, 2026 |
| 35 | Elevenlabs elevenlabs.io | 80 | 80% | login walls | Jun 9, 2026 |
| 36 | Exa exa.ai | 80 | 80% | login walls | Jun 9, 2026 |
| 37 | Firecrawl firecrawl.dev | 80 | 80% | login walls | Jun 9, 2026 |
| 38 | Fly fly.io | 80 | 80% | login walls | Jun 9, 2026 |
| 39 | GitLab gitlab.com | 80 | 80% | login walls | Jun 9, 2026 |
| 40 | Google google.com | 80 | 80% | public url verified | Jul 7, 2026 |
| 41 | Heroku heroku.com | 80 | 80% | login walls | Jun 9, 2026 |
| 42 | Honeycomb honeycomb.io | 80 | 80% | login walls | Jun 9, 2026 |
| 43 | Huggingface huggingface.co | 80 | 80% | login walls | Jun 9, 2026 |
| 44 | Inngest inngest.com | 80 | 80% | login walls | Jun 9, 2026 |
| 45 | Jina jina.ai | 80 | 80% | login walls | Jun 9, 2026 |
| 46 | Launchdarkly launchdarkly.com | 80 | 80% | login walls | Jun 9, 2026 |
| 47 | Linear linear.app | 80 | 80% | login walls | Jun 9, 2026 |
| 48 | Mailgun mailgun.com | 80 | 80% | login walls | Jun 9, 2026 |
| 49 | Make make.com | 80 | 80% | login walls | Jun 9, 2026 |
| 50 | Mapbox mapbox.com | 80 | 80% | login walls | Jun 9, 2026 |
| 51 | Microsoft microsoft.com | 80 | 80% | login walls | Jun 9, 2026 |
| 52 | Mixpanel mixpanel.com | 80 | 80% | login walls | Jun 9, 2026 |
| 53 | N8n n8n.io | 80 | 80% | login walls | Jun 9, 2026 |
| 54 | Neon neon.tech | 80 | 80% | login walls | Jun 9, 2026 |
| 55 | Netlify netlify.com | 80 | 80% | login walls | Jun 9, 2026 |
| 56 | Newrelic newrelic.com | 80 | 80% | login walls | Jun 9, 2026 |
| 57 | Notion notion.com | 80 | 80% | login walls | Jun 9, 2026 |
| 58 | Npmjs npmjs.com | 80 | 80% | login walls | Jun 9, 2026 |
| 59 | Okta okta.com | 80 | 80% | login walls | Jun 9, 2026 |
| 60 | Openai openai.com | 80 | 80% | login walls | Jun 9, 2026 |
| 61 | Opencagedata opencagedata.com | 80 | 80% | login walls | Jun 9, 2026 |
| 62 | Pagerduty pagerduty.com | 80 | 80% | login walls | Jun 9, 2026 |
| 63 | Paypal paypal.com | 80 | 80% | login walls | Jun 9, 2026 |
| 64 | Perplexity perplexity.ai | 80 | 80% | login walls | Jun 9, 2026 |
| 65 | Plaid plaid.com | 80 | 80% | login walls | Jun 9, 2026 |
| 66 | Planetscale planetscale.com | 80 | 80% | login walls | Jun 9, 2026 |
| 67 | Postman postman.com | 80 | 80% | login walls | Jun 9, 2026 |
| 68 | Postmarkapp postmarkapp.com | 80 | 80% | login walls | Jun 9, 2026 |
| 69 | Pypi pypi.org | 80 | 80% | login walls | Jun 9, 2026 |
| 70 | Qdrant qdrant.tech | 80 | 80% | login walls | Jun 9, 2026 |
| 71 | Railway railway.app | 80 | 80% | login walls | Jun 9, 2026 |
| 72 | Rapidapi rapidapi.com | 80 | 80% | login walls | Jun 9, 2026 |
| 73 | Readme readme.com | 80 | 80% | login walls | Jun 9, 2026 |
| 74 | Recurly recurly.com | 80 | 80% | login walls | Jun 9, 2026 |
| 75 | Render render.com | 80 | 80% | login walls | Jun 9, 2026 |
| 76 | Replicate replicate.com | 80 | 80% | login walls | Jun 9, 2026 |
| 77 | Resend resend.com | 80 | 80% | login walls | Jun 9, 2026 |
| 78 | Segment segment.com | 80 | 80% | login walls | Jun 9, 2026 |
| 79 | Sendgrid sendgrid.com | 80 | 80% | login walls | Jun 9, 2026 |
| 80 | Sentry sentry.io | 80 | 80% | public url verified | Jul 7, 2026 |
| 81 | Serpapi serpapi.com | 80 | 80% | login walls | Jun 9, 2026 |
| 82 | Shopify shopify.dev | 80 | 80% | login walls | Jun 9, 2026 |
| 83 | Slack slack.com | 80 | 80% | login walls | Jun 9, 2026 |
| 84 | Split split.io | 80 | 80% | login walls | Jun 9, 2026 |
| 85 | Statsig statsig.com | 80 | 80% | login walls | Jun 9, 2026 |
| 86 | Statuspage statuspage.io | 80 | 80% | public url verified | Jun 27, 2026 |
| 87 | Stripe stripe.com | 80 | 80% | login walls | Jun 9, 2026 |
| 88 | Supabase supabase.com | 80 | 80% | login walls | Jun 9, 2026 |
| 89 | Tavily tavily.com | 80 | 80% | login walls | Jun 9, 2026 |
| 90 | Temporal temporal.io | 80 | 80% | login walls | Jun 9, 2026 |
| 91 | Together together.ai | 80 | 80% | login walls | Jun 9, 2026 |
| 92 | Trigger trigger.dev | 80 | 80% | login walls | Jun 9, 2026 |
| 93 | Vercel vercel.com | 80 | 80% | public url verified | Jul 7, 2026 |
| 94 | Weaviate weaviate.io | 80 | 80% | login walls | Jun 9, 2026 |
| 95 | Workos workos.com | 80 | 80% | login walls | Jun 9, 2026 |
| 96 | Zapier zapier.com | 80 | 80% | login walls | Jun 9, 2026 |
| 97 | Stainlessapi stainlessapi.com | 40 | 40% | unstable page controls | Jun 9, 2026 |
| 98 | Auth0 auth0.com | 0 | 0% | public url verified | Jul 7, 2026 |
| 99 | Clerk clerk.com | 0 | 0% | public url verified | Jul 7, 2026 |
| 100 | Cloudflare cloudflare.com | 0 | 0% | public url verified | Jul 7, 2026 |
Worst-of section
The hardest developer, saas, and api sites for AI agents
AES 0
Cloudflare
Top blocker: public url verified. Last verified Jul 7, 2026. Low confidence, 1 observations.
AES 0
Clerk
Top blocker: public url verified. Last verified Jul 7, 2026. Low confidence, 1 observations.
AES 0
Auth0
Top blocker: public url verified. Last verified Jul 7, 2026. Low confidence, 1 observations.
AES 40
Stainlessapi
Top blocker: unstable page controls. Last verified Jun 9, 2026. Low confidence, 1 observations.
AES 80
Zapier
Top blocker: login walls. Last verified Jun 9, 2026. Low confidence, 1 observations.
AES 80
Workos
Top blocker: login walls. Last verified Jun 9, 2026. Low confidence, 1 observations.
AES 80
Weaviate
Top blocker: login walls. Last verified Jun 9, 2026. Low confidence, 1 observations.
AES 80
Vercel
Top blocker: public url verified. Last verified Jul 7, 2026. Low confidence, 1 observations.