Legible measures how findable, citable, and buyable your brand is to AI assistants like ChatGPT, Claude, Gemini, and Perplexity — then shows you exactly how to improve it.

What is the Legible Readiness Index?

A score from 0 to 100 across eight machine-facing dimensions — from structured data to citability — that tells you how ready your site is to be found and cited by AI.

How much does Legible cost?

The Readiness Index is free. Pro is CHF 49 per month and unlocks the copy-paste Fix Pack, the Deep Audit, Share-of-Voice and Verification modules, and scheduled monitoring.

What is Generative Engine Optimization (GEO)?

GEO is making your brand the answer when people ask AI — the AI-era successor to SEO, optimizing to be named and quoted inside generated answers instead of ranked in a list of links.

IsyourbrandlegibletoAI?

Your customers aren't searching anymore, they're asking AI. Make sure you appear when people ask ChatGPT, Google, and other AI tools.

The shift to AI discovery

AI assistants are the new front door to every brand. They decide who gets surfaced, cited, and bought. The result?

Be legible — or be invisible.

What the index measures8 dimensions · 100 pts

01
Structured data
20%
02
Entity consensus
15%
03
Citability
15%
04
Commerce readiness
15%
05
Machine access
10%
06
Multilingual
10%
07
Verification
10%
08
Freshness
5%

How it worksscore · fix · serve · measure

Score

Paste a URL. We read your public site and grade 8 machine-facing dimensions into one Readiness Index.

Fix

Get a prioritized Fix Pack — copy-paste JSON-LD, llms.txt, robots and ai-facts, pre-filled for your site.

Serve

Publish a hosted truth layer and agent-commerce manifest that agents read directly, kept fresh.

Measure

Track Share-of-Voice across models and languages, verify claims, and watch verified agent traffic.

The full system that makes a brand legible to AI

Legibility, engineered.

Readiness Index

An 8-dimension score with band, multi-page crawl and platform detection.

Fix Pack

Copy-paste JSON-LD, llms.txt, robots 2.0 and ai-facts — pre-filled for your site.

Entity grounding

Wikidata + sameAs identity graph so models agree on who you are.

Hosted truth layer

A machine-readable doc agents read at a stable URL, kept current.

Share-of-Voice

Are you named in AI answers? Measured across Claude, ChatGPT, Perplexity & Gemini.

Per-locale visibility

DE / FR / IT / EN parity — visibility differs sharply by language.

Deep Audit

An agent's-eye qualitative read of legibility, claims and transactability.

Verification

Claims graded supported / vague / unsupported — your anti-AI-washing score.

Commerce readiness

Can an agent complete a purchase? A callable audit says yes / partial / no.

Agent-commerce manifest

Your machine-readable catalogue, pricing, availability and policy surface.

Protocols

ACP / UCP / MCP readiness so agents can transact, not just read.

Agent governance

Identify & verify AI crawlers (FCrDNS) into trust tiers; log every agent read.

Every scan, lead and verified agent read rolls up into a usage & attribution dashboard.

New · MCP server

Legible runs inside your AI assistant.

Connect Legible as an MCP server and score any brand's AI readiness — straight from Claude, Cursor or ChatGPT, without leaving the chat. The platform built to make you legible to agents is itself callable by them.

Set up the MCP Free · no API key

claude_desktop_config.json

{
  "mcpServers": {
    "legible": {
      "url": "https://legibleindex.com/api/mcp"
    }
  }
}

→ score_brand(url) · get_fix_pack(url)

Who it's forverticals

Built for brands that get bought on trust.

01
Luxury & watchmaking
High-consideration brands where the AI's answer shapes the purchase.
02
B2B SaaS
Buyers shortlist vendors through assistants long before a demo.
03
E-commerce & retail
Agents that read catalogues, compare, and check out for the user.
04
Financial services
Verifiable, evidence-backed claims decide who AI recommends.
05
Publishers & media
Citation share in AI answers is the new organic traffic.
06
Travel & hospitality
Per-locale visibility across every market you sell in.

90%

of B2B buying interactions projected to run through AI by 2028

Gartner

1.5×

the conversion rate of AI-referred visitors versus other channels, measured across 500 retailers

Criteo

69%

of B2B software buyers chose a different vendor than planned after guidance from an AI assistant

B2B buyer survey

Sources: Gartner (B2B buying projection, 2028) · Criteo (500-retailer study) · B2B software buyer survey.

Featuredfrom the knowledge base

guideHow to measure AI traffic to your website articleThe agentic commerce protocol war: ACP, UCP, AP2 and what actually matters guideThe AI agent readiness checklist: 24 checks for your website guideShould you block AI crawlers? GPTBot, ClaudeBot, and PerplexityBot explained

FAQ

What is Legible?: Legible measures how findable, citable, and buyable your brand is to AI assistants like ChatGPT, Claude, Gemini, and Perplexity — then shows you exactly how to improve it.
What is the Legible Readiness Index?: A score from 0 to 100 across eight machine-facing dimensions — from structured data to citability — that tells you how ready your site is to be found and cited by AI.
How much does Legible cost?: The Readiness Index is free. Pro is CHF 49 per month and unlocks the copy-paste Fix Pack, the Deep Audit, Share-of-Voice and Verification modules, and scheduled monitoring.
What is Generative Engine Optimization (GEO)?: GEO is making your brand the answer when people ask AI — the AI-era successor to SEO, optimizing to be named and quoted inside generated answers instead of ranked in a list of links.

See where your brand stands with AI.

Get your Readiness Index in seconds — then the Fix Pack to close the gaps.

→See the platform

free · no signup · no limits