Let Agents In

Agent readiness · Authentication as a service

auth0.com

14 of 16 measurable points under formula 9.2, measured on 2026-08-12. 15 checks exist; each is one HTTP request with a published rule, so every sentence below can be rerun and argued with.

A · Discovery

  • PASS
    Answers an agent user-agentAnswered 200 to LetAgentsIn/1.0 (+https://letagentsin.com/methodology)
  • PASS
    llms.txt publishedllms.txt and llms-full.txt present at https://auth0.com/llms.txt and https://auth0.com/llms-full.txt and https://auth0.com/docs/llms.txt, and the 12 links we sampled across both files all answer
  • PASS
    Docs readable without JavaScript10,674 characters of text without JS, on https://auth0.com/docs/api/management/v2/clients/post-credentials rather than on https://auth0.com/docs
  • PASS
    On-demand agents not blockedNo on-demand agent is blocked
  • N/A
    Paths robots.txt points at answerrobots.txt names no concrete path, only patterns or nothing, so there is no claim to check
  • PASS
    No punishing crawl delayNo Crawl-delay applies to the agents we check

B · Agent entry

  • FAIL
    Agent entry pointNone of the 9 known agent entry paths returns a file rather than your page shell
  • PASS
    OAuth dynamic client registrationregistration_endpoint published, and client_credentials is among the 13 advertised grants, so an unattended agent has a documented path to a token
  • PASS
    MCP surfaceLive MCP endpoint at https://mcp.auth0.com/v1/mcp, answered 401 with an auth challenge

C · Registration

  • PASS
    No CAPTCHA in the signup HTMLNo CAPTCHA vendor in the server HTML. A widget mounted later by JavaScript would not show here.
  • PASS
    Signup reachable without a browserForm renders in server HTML at https://auth0.com/signup?place=header&type=button&text=sign%20up

D · Provisioning

  • PASS
    Programmatic key provisioning3 of 7 provisioning phrases across the 7 documents we read: "management api", "account api", "service account"
  • PASS
    Free tier or no-card trial stated in textFree tier or no-card signals at https://auth0.com/pricing/: "No credit card"

E · Integration

  • PASS
    Typed SDK on the registryauth0@6.2.0 ships types, matched from the registry by who publishes it rather than by a link on your site
  • PASS
    Machine-readable API descriptionDocs serve markdown to machines, at https://auth0.com/docs

Tell me when this changes

The failures here are the kind nobody notices. An edge rule that starts refusing agents changes nothing a person sees in a browser, so the first sign is usually an integration that quietly stopped working. We rescan weekly and write only when a verdict moves.

This page is the newest scan we hold for auth0.com and changes when we rescan. It is not a judgement of the product: we measure whether an unattended run can get through, not whether the thing is any good. The whole corpus is published as JSON and CSV.

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