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22 design principles · measured on the rendered page

22 of 22 principles held on this page at build, 1280 px wide. Your browser measures again when the page loads.

  1. 01One signal, one agent colour, states only for statespalette onlyPASS
  2. 02Signal covers at most 7% of the screen0.0% of 7%PASS
  3. 03Signal never sets small text on papernonePASS
  4. 04Text meets WCAG 2.2 AA contrastlowest 4.66:1PASS
  5. 05Four faces, one family4 of 4 facesPASS
  6. 06Nothing below 12 pxsmallest 12.0 pxPASS
  7. 07Reading lines stay under 75 characterslongest 51 a linePASS
  8. 08Corners are square or roundsquare or roundPASS
  9. 09Rules are hairlinesheaviest 1 pxPASS
  10. 10Every control is at least 44 by 44all 44+PASS
  11. 11Images say what they show0 images checkedPASS
  12. 12One H1, no skipped levels6 headingsPASS
  13. 13Nothing scrolls sidewaysfits 1280 pxPASS
  14. 14Every figure names its source0 figures, 0 sourcedPASS
  15. 15Every figure has a comparisonno figuresPASS
  16. 16One action, one labelone label eachPASS
  17. 17The decision comes firstnot a casePASS
  18. 18Motion stops when you ask0 motion sources, each stoppablePASS
  19. 19Agents can read itstructured data and cataloguePASS
  20. 20Space sits on the 8-point grid98 boxes, 0 off the gridPASS
  21. 21Type keeps the rhythm59 text boxes, 0 off the rhythmPASS
  22. 22Quotes curl, dots are one dot71 runs of text, 0 to fixPASS

The principlesprinciples.json

Essays, a library, a reference

Writing.

On designing for agents: the principles they work under, and the moment they act for a person.

  1. 01ESSAY · DEGENIE.XYZ

    Essay · October 2026 · 7 min · three live demos

    Principles that run.

    When agents make the work, the designer’s deliverable is the principles it is made from. The brand, the product and the company, each running in the page.

    Read →
  2. 02ESSAY · DEGENIE.XYZ

    Essay · October 2026 · 6 min

    Ask before you spend.

    AI agents can now pay. The screen a person sees before the money moves is still mostly unbuilt.

    Read →
  3. 03LIBRARY · DEGENIE.XYZ

    Library · version 0

    Agency Patterns.

    Interface patterns for software that acts with people’s money: what to show before, during and after an agent acts.

    Read →
  4. 04REFERENCE · DEGENIE.XYZ

    Reference · 22 principles

    The principles this site is built on.

    Twenty-two principles a person can read and a machine can measure, with the palette, faces, voice, grid, build measurements and a record of changes.

    Read →

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