Tokens & playbooks / Component behavior reference

UI Playbook

Specify how an interaction should work before choosing its appearance.

Documentation reviewed

Source review
Oct 18, 2026

Understand the resource

What it is.

UI Playbook documents a compact set of UI components, including buttons, fields, notifications and popovers. Use it to structure questions about behavior and states rather than treating the site as a complete application kit.

When it is useful

A team agrees on a visual mockup but not on input, validation or feedback behavior.

A proposed application

Put it to work.

This example illustrates a possible use. The proposed workflow and expected result are separate from the bounded checks recorded below.

Try this

Write the expected field label, hint, error and submission states for a simple account form.

Result to aim for

A component behavior specification for implementation and testing.

Before you start

What you need.

A defined interaction and an implementation team or editor.

The practical boundaries

What to watch for.

The collection is limited and some entries are marked as upcoming.
Cross-check complex accessibility behavior with current platform guidance; documentation alone does not validate your component.

Review record

What we could establish.

Public primary documentation reviewed. See the account-free evaluation for executed checks and remaining workflow limits.

Source coverage and runtime coverage are separate

The source-review notes describe documentation and identity. The account-free evaluation below records exactly which public interaction or local fixture was checked, what happened, and what remains untested.

Check current access, terms, licensing and data handling before using a resource with your own material.

Runtime and security evaluation

What the evaluation covers.

Bounded runtime checkedAccount-free · Oct 19, 2026

The Tooltip detail opened with functionality, implementation, examples and accessibility sections. The public component reference is readable without an account.

Methods: Public HTTP response · Public browser sample. A completed check covers the stated sample; it is not a safety certification.

Target: https://uiplaybook.dev/
Version or capture: Unversioned public page observed on 2026-10-19
Integrity scope: sha256:93c3dc11cc805d556bcb0159fcbd4c80cc10fc3af1f4483c22d3756aee042e07 — initial HTTP 200 response body only; not whole-application integrity.

Test conditions

Chromium 155.0.8059.82, 1365×900 desktop viewport.
Separate fresh, ephemeral browser contexts for entry and interaction; no owner profile, credentials or stored session.
Only GET/HEAD network requests allowed; forms, downloads, WebSockets and service workers blocked. Some analytics endpoints also blocked.
Short bounded waits; no mobile, assistive-technology, cross-browser or performance certification.

Individual checks and observations

Public HTTP response
pass
Public HTTP response: Anonymous GET with redirects followed, response-body SHA-256 and selected security-header summaries; no cookies retained.
Observed: The standalone client received 200 at https://uiplaybook.dev/. This establishes response delivery only.
Fresh browser entry
pass
Public browser sample: Open the catalog URL in a new anonymous Chromium context with read-only network guards and no inherited profile.
Observed: The document returned 200 and identified itself as “UI Playbook”. 2 image elements were present; no account was used.
Observed public sample or navigation
pass
Public browser sample: Follow the observed Tooltip label link to https://uiplaybook.dev/play/tooltip.
Observed: The destination returned 200; title: “UI Playbook — Tooltip”. 0 page image elements had decoded during the bounded wait. This count is not a catalog size or performance benchmark.

Security findings and boundaries

Passive inspection of the initial public document’s response headers and anonymous browser request hostnames, with read-only guards. No source exploitation, account access, dependency audit or private data.

Observed · info

Public response protections

The initial browser page used HTTPS. Its response included HSTS. No enforcing Content-Security-Policy response header was observed. This records the sampled response only; meta policies, backend authorization and exploit resistance were not assessed.

Observed · info

Request surface in the anonymous visit

UI Playbook attempted requests to 3 additional hosts, including www.googletagmanager.com, avatars2.githubusercontent.com, avatar.tobi.sh. Host counts include requests stopped by the test guard; they do not establish what data a service retained.

Practical advice · caution

Before using this reference

Treat the tooltip page as a behavior checklist; test your own focus, escape and touch behavior separately.

Practical caveats

Treat the tooltip page as a behavior checklist; test your own focus, escape and touch behavior separately.
The collection is limited and some entries are marked as upcoming.

What remains untested

The tooltip example itself was not triggered, and no component package, screen reader or application implementation was tested.
Results describe the observed public pages and a bounded action, not the entire product or the referenced designs.

Security limits

No authentication, authorization, tenant separation, data retention or backend handling was tested.
Header presence or absence is a sampled configuration observation, not a security certification or an exploit finding.
6 blocked-request records were retained across entry and interaction checks. Guards may alter normal page behavior; the logs do not represent unrestricted traffic.

Evaluation sources

Download this evaluation record (JSON)

Follow the evidence

Sources and further reading.

Primary product page

Keep exploring