Developer, SaaS, And API ranking
Best and worst sites for AI agents to read api documentation.
Ranked from recent CrawlDex observations. Last verified Jun 9, 2026. Based on 107 observations.
Publication status
Search-ready- 95
- ranked websites
- 100
- best AES
- 0
- hardest AES
- 73%
- 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 | Adyen adyen.com | 100 | 100% | hidden or obstructing modals | Jun 9, 2026 |
| 2 | Apollographql apollographql.com | 100 | 100% | none observed | Jun 9, 2026 |
| 3 | Discord discord.com | 100 | 100% | none observed | Jun 9, 2026 |
| 4 | Github github.com | 100 | 100% | none observed | Jun 9, 2026 |
| 5 | Groq groq.com | 100 | 100% | hidden or obstructing modals | Jun 9, 2026 |
| 6 | Hasura hasura.io | 100 | 100% | none observed | Jun 9, 2026 |
| 7 | Here here.com | 100 | 100% | hidden or obstructing modals | Jun 9, 2026 |
| 8 | Mistral mistral.ai | 100 | 100% | none observed | Jun 9, 2026 |
| 9 | Mongodb mongodb.com | 100 | 100% | hidden or obstructing modals | Jun 9, 2026 |
| 10 | Posthog posthog.com | 100 | 100% | none observed | Jun 9, 2026 |
| 11 | Squareup squareup.com | 100 | 100% | account or portal handoff | Jun 9, 2026 |
| 12 | Statuspage statuspage.io | 100 | 100% | none observed | Jun 9, 2026 |
| 13 | Stoplight stoplight.io | 100 | 100% | hidden or obstructing modals | Jun 9, 2026 |
| 14 | Chargebee chargebee.com | 90 | 90% | login walls | Jun 9, 2026 |
| 15 | Airtable airtable.com | 80 | 80% | login walls | Jun 9, 2026 |
| 16 | Algolia algolia.com | 80 | 80% | login walls | Jun 9, 2026 |
| 17 | Amazon amazon.com | 80 | 80% | login walls | Jun 9, 2026 |
| 18 | Anthropic anthropic.com | 80 | 80% | login walls | Jun 9, 2026 |
| 19 | Atlassian atlassian.com | 80 | 80% | login walls | Jun 9, 2026 |
| 20 | Bitbucket bitbucket.org | 80 | 80% | login walls | Jun 9, 2026 |
| 21 | Braintreepayments braintreepayments.com | 80 | 80% | login walls | Jun 9, 2026 |
| 22 | Cockroachlabs cockroachlabs.com | 80 | 80% | login walls | Jun 9, 2026 |
| 23 | Cohere cohere.com | 80 | 80% | login walls | Jun 9, 2026 |
| 24 | Datadog datadog.com | 80 | 80% | login walls | Jun 9, 2026 |
| 25 | Deepgram deepgram.com | 80 | 80% | login walls | Jun 9, 2026 |
| 26 | Digitalocean digitalocean.com | 80 | 80% | login walls | Jun 9, 2026 |
| 27 | Docker docker.com | 80 | 80% | login walls | Jun 9, 2026 |
| 28 | Elastic elastic.co | 80 | 80% | login walls | Jun 9, 2026 |
| 29 | Elevenlabs elevenlabs.io | 80 | 80% | login walls | Jun 9, 2026 |
| 30 | Exa exa.ai | 80 | 80% | login walls | Jun 9, 2026 |
| 31 | Firecrawl firecrawl.dev | 80 | 80% | login walls | Jun 9, 2026 |
| 32 | Heroku heroku.com | 80 | 80% | login walls | Jun 9, 2026 |
| 33 | Honeycomb honeycomb.io | 80 | 80% | login walls | Jun 9, 2026 |
| 34 | Huggingface huggingface.co | 80 | 80% | login walls | Jun 9, 2026 |
| 35 | Inngest inngest.com | 80 | 80% | login walls | Jun 9, 2026 |
| 36 | Jina jina.ai | 80 | 80% | login walls | Jun 9, 2026 |
| 37 | Launchdarkly launchdarkly.com | 80 | 80% | login walls | Jun 9, 2026 |
| 38 | Linear linear.app | 80 | 80% | login walls | Jun 9, 2026 |
| 39 | Mailgun mailgun.com | 80 | 80% | login walls | Jun 9, 2026 |
| 40 | Make make.com | 80 | 80% | login walls | Jun 9, 2026 |
| 41 | Mapbox mapbox.com | 80 | 80% | login walls | Jun 9, 2026 |
| 42 | Microsoft microsoft.com | 80 | 80% | login walls | Jun 9, 2026 |
| 43 | Mixpanel mixpanel.com | 80 | 80% | login walls | Jun 9, 2026 |
| 44 | N8n n8n.io | 80 | 80% | login walls | Jun 9, 2026 |
| 45 | Neon neon.tech | 80 | 80% | login walls | Jun 9, 2026 |
| 46 | Newrelic newrelic.com | 80 | 80% | login walls | Jun 9, 2026 |
| 47 | Notion notion.com | 80 | 80% | login walls | Jun 9, 2026 |
| 48 | Npmjs npmjs.com | 80 | 80% | login walls | Jun 9, 2026 |
| 49 | Okta okta.com | 80 | 80% | login walls | Jun 9, 2026 |
| 50 | Opencagedata opencagedata.com | 80 | 80% | login walls | Jun 9, 2026 |
| 51 | Pagerduty pagerduty.com | 80 | 80% | login walls | Jun 9, 2026 |
| 52 | Paypal paypal.com | 80 | 80% | login walls | Jun 9, 2026 |
| 53 | Perplexity perplexity.ai | 80 | 80% | login walls | Jun 9, 2026 |
| 54 | Plaid plaid.com | 80 | 80% | login walls | Jun 9, 2026 |
| 55 | Planetscale planetscale.com | 80 | 80% | login walls | Jun 9, 2026 |
| 56 | Postman postman.com | 80 | 80% | login walls | Jun 9, 2026 |
| 57 | Postmarkapp postmarkapp.com | 80 | 80% | login walls | Jun 9, 2026 |
| 58 | Pypi pypi.org | 80 | 80% | login walls | Jun 9, 2026 |
| 59 | Railway railway.app | 80 | 80% | login walls | Jun 9, 2026 |
| 60 | Rapidapi rapidapi.com | 80 | 80% | login walls | Jun 9, 2026 |
| 61 | Readme readme.com | 80 | 80% | login walls | Jun 9, 2026 |
| 62 | Recurly recurly.com | 80 | 80% | login walls | Jun 9, 2026 |
| 63 | Render render.com | 80 | 80% | login walls | Jun 9, 2026 |
| 64 | Replicate replicate.com | 80 | 80% | login walls | Jun 9, 2026 |
| 65 | Resend resend.com | 80 | 80% | login walls | Jun 9, 2026 |
| 66 | Segment segment.com | 80 | 80% | login walls | Jun 9, 2026 |
| 67 | Sendgrid sendgrid.com | 80 | 80% | login walls | Jun 9, 2026 |
| 68 | Serpapi serpapi.com | 80 | 80% | login walls | Jun 9, 2026 |
| 69 | Shopify shopify.dev | 80 | 80% | login walls | Jun 9, 2026 |
| 70 | Slack slack.com | 80 | 80% | login walls | Jun 9, 2026 |
| 71 | Split split.io | 80 | 80% | login walls | Jun 9, 2026 |
| 72 | Statsig statsig.com | 80 | 80% | login walls | Jun 9, 2026 |
| 73 | Supabase supabase.com | 80 | 80% | login walls | Jun 9, 2026 |
| 74 | Tavily tavily.com | 80 | 80% | login walls | Jun 9, 2026 |
| 75 | Temporal temporal.io | 80 | 80% | login walls | Jun 9, 2026 |
| 76 | Together together.ai | 80 | 80% | login walls | Jun 9, 2026 |
| 77 | Trigger trigger.dev | 80 | 80% | login walls | Jun 9, 2026 |
| 78 | Workos workos.com | 80 | 80% | login walls | Jun 9, 2026 |
| 79 | Zapier zapier.com | 80 | 80% | login walls | Jun 9, 2026 |
| 80 | Redis redis.io | 50 | 50% | hidden or obstructing modals | Jun 9, 2026 |
| 81 | Amplitude amplitude.com | 40 | 40% | unstable page controls | Jun 9, 2026 |
| 82 | Fly fly.io | 40 | 40% | login walls | Jun 9, 2026 |
| 83 | Google google.com | 40 | 40% | unstable page controls | Jun 9, 2026 |
| 84 | Netlify netlify.com | 40 | 40% | login walls | Jun 9, 2026 |
| 85 | Openai openai.com | 40 | 40% | login walls | Jun 9, 2026 |
| 86 | Stainlessapi stainlessapi.com | 40 | 40% | unstable page controls | Jun 9, 2026 |
| 87 | Weaviate weaviate.io | 40 | 40% | login walls | Jun 9, 2026 |
| 88 | Auth0 auth0.com | 0 | 0% | bot detection blocks | Jun 9, 2026 |
| 89 | Browserbase browserbase.com | 0 | 0% | bot detection blocks | Jun 9, 2026 |
| 90 | Clerk clerk.com | 0 | 0% | bot detection blocks | Jun 9, 2026 |
| 91 | Qdrant qdrant.tech | 0 | 0% | navigation failed | Jun 9, 2026 |
| 92 | Sentry sentry.io | 0 | 0% | bot detection blocks | Jun 9, 2026 |
| 93 | Twilio twilio.com | 0 | 0% | bot detection blocks | Jun 9, 2026 |
| 94 | Upstash upstash.com | 0 | 0% | bot detection blocks | Jun 9, 2026 |
| 95 | Vercel vercel.com | 0 | 0% | bot detection blocks | Jun 9, 2026 |
Worst-of section
The hardest developer, saas, and api sites for AI agents
AES 0
Vercel
Top blocker: bot detection blocks. Last verified Jun 9, 2026. Low confidence, 1 observations.
AES 0
Upstash
Top blocker: bot detection blocks. Last verified Jun 9, 2026. Low confidence, 3 observations.
AES 0
Twilio
Top blocker: bot detection blocks. Last verified Jun 9, 2026. Low confidence, 1 observations.
AES 0
Sentry
Top blocker: bot detection blocks. Last verified Jun 9, 2026. Low confidence, 1 observations.
AES 0
Qdrant
Top blocker: navigation failed. Last verified Jun 9, 2026. Low confidence, 1 observations.
AES 0
Clerk
Top blocker: bot detection blocks. Last verified Jun 9, 2026. Low confidence, 1 observations.
AES 0
Browserbase
Top blocker: bot detection blocks. Last verified Jun 9, 2026. Low confidence, 1 observations.
AES 0
Auth0
Top blocker: bot detection blocks. Last verified Jun 9, 2026. Low confidence, 1 observations.