Readability Card

Prose metrics as a typographic card: the Flesch reading-ease score set huge, its plain-language grade, and a stat row -- words, sentences, minutes to read at a declared words-per-minute, words per sentence, syllables per word, longest sentence -- all computed by the renderer from the text with identical arithmetic on every renderer (syllables by a vowel-group heuristic, sentences on . ! ? followed by space). The excerpt is shown underneath with the longest sentence highlighted, which is usually the one to cut. Built for the writing workflow; give it a draft and it tells you what a reader will feel.

Surfaces

webgoogle-meet-stagegoogle-apps-script-webmcp-appspdfandroid

Degraded on

Surface	Note
google-chat	Renders as a plain text card; the typographic layout is lost

Live preview

readability

59.7

Flesch reading ease · fairly hard

6

words

1

sentences

1 min

to read

6.00

words / sentence

1.67

syllables / word

6

longest sentence

A concise description of the content.

Fields

Field	Type	Required
text	string (required). The prose to measure, up to 5000 characters.	required
title	string. Label above the score. Default "readability".	optional
wpm	integer. Reading speed for the time estimate, clamped 100-500. Default 230.	optional
highlight_longest	bool. Mark the longest sentence in the excerpt. Default true.	optional
theme	"dark" \| "light" (optional, default "light")	optional
accent	"#rrggbb". Default "#0e7bb8".	optional

Example payload

{
  "type": "readability_card",
  "text": "A concise description of the content."
}

ARD catalog entry

{
  "identifier": "urn:air:a2uicatalog.ai:atom:readability_card",
  "displayName": "Readability Card",
  "type": "application/vnd.a2ui.atom+json",
  "url": "https://a2uicatalog.ai/atoms/readability_card",
  "capabilities": [
    "web",
    "google-meet-stage",
    "google-apps-script-web",
    "mcp-apps",
    "pdf",
    "android"
  ],
  "description": "Prose metrics as a typographic card: the Flesch reading-ease score set huge, its plain-language grade, and a stat row -- words, sentences, minutes to read at a declared words-per-minute, words per sentence, syllables per word, longest sentence -- all computed by the renderer from the text with identical arithmetic on every renderer (syllables by a vowel-group heuristic, sentences on . ! ? followed by space). The excerpt is shown underneath with the longest sentence highlighted, which is usually the one to cut. Built for the writing workflow; give it a draft and it tells you what a reader will feel.",
  "representativeQueries": [
    "show a Flesch score, reading time and sentence stats computed from prose, longest sentence highlighted",
    "prose metrics as a typographic card: the flesch reading-ease score set huge, its plain-language grad",
    "render a readability card"
  ]
}

← Full ARD catalog

Deploy your own Google Apps Script renderer

The renderer is an open-source Google Apps Script web app. Deploy your own instance in 4 commands — you own the URL, no dependency on the demo endpoint.

git clone https://github.com/a2uicatalog/a2ui
cd a2ui/apps-script-surface/gas-wired-renderer
clasp push && clasp deploy

Full deploy guide →