Agent readiness · Feature flags and experiments
growthbook.io
9 of 15 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. 1 of them could not be measured from where we ask, and those are left out of the denominator rather than counted as failures.
A · Discovery
- PASSAnswers an agent user-agentAnswered 200 to LetAgentsIn/1.0 (+https://letagentsin.com/methodology)
- FAILllms.txt publishedllms.txt and llms-full.txt present at https://www.growthbook.io/llms.txt and https://docs.growthbook.io/llms.txt and https://docs.growthbook.io/llms-full.txt, but 4 of the 12 links we sampled across both files are gone, starting with https://www.growthbook.io/insights/one-tailed-vs-two-tailed-hypothesis-testing
- PASSDocs readable without JavaScript20,529 characters of text without JS, on https://docs.growthbook.io/account/user-permissions rather than on https://docs.growthbook.io
- PASSOn-demand agents not blockedNo on-demand agent is blocked
- N/APaths robots.txt points at answerrobots.txt names no concrete path, only patterns or nothing, so there is no claim to check
- PASSNo punishing crawl delayNo Crawl-delay applies to the agents we check
B · Agent entry
- FAILAgent entry pointNone of the 9 known agent entry paths returns a file rather than your page shell
- PASSOAuth 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
- PASSMCP surfaceLive MCP endpoint at https://mcp.growthbook.io/mcp, answered 401 with an auth challenge
C · Registration
- UNMEASUREDNo CAPTCHA in the signup HTMLUnmeasurable: the signup form at https://app.growthbook.io is not in the server HTML, so its gates are not eitherServer-render the form, or tell us the endpoint it posts to, and the gates become visible to us and to an agent.
- FAILSignup reachable without a browserhttps://app.growthbook.io is reachable, but its form needs JavaScript
D · Provisioning
- PARTProgrammatic key provisioning1 of 7 provisioning phrases across the 7 documents we read: "service account"
- PASSFree tier or no-card trial stated in textFree tier or no-card signals at https://www.growthbook.io/pricing: "No credit card", "Free Tier", "free plan"
E · Integration
- PASSTyped SDK on the registry@growthbook/growthbook@1.7.0 ships types
- FAILMachine-readable API descriptionNo OpenAPI spec at the 5 usual paths, none declared by https://docs.growthbook.io, and no markdown negotiationPoint at your spec from your docs page with rel="service-desc" and an agent finds it without guessing.
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 growthbook.io 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.