AI-Signed is a trust verification platform that runs 43 automated checks across identity, security, content, reputation, and AI readiness. Verified sites earn a trust badge that AI chatbots and search engines can read when deciding which sources to recommend.

How does AI-Signed help with AI chatbot recommendations?

AI chatbots like ChatGPT, Perplexity, and Google AI prioritize verified, trustworthy sites when recommending sources. AI-Signed verifies your site across 43 trust signals — security headers, structured data, llms.txt, and more — so AI agents can confirm your site is legitimate and cite it over unverified competitors.

How much does AI-Signed cost?

AI-Signed offers three tiers. Verified is $5.99/mo for the trust badge and 43 automated checks. Verified + GEO Citation Checker is $13.98/mo — the base Verified plan stacked with the $7.99/mo GEO add-on that measures which LLMs cite your brand. Verified Business is $19.99/mo and includes the GEO Citation Checker with expanded monthly quotas. You can run a free instant scan before subscribing.

What is the GEO Citation Checker?

The GEO (Generative Engine Optimization) Citation Checker runs auto-generated, natural-language prompts against Claude with live web search, then reports whether your domain is cited, whether your brand is mentioned in the answer, and which competitor domains are cited most often. Available as a $7.99/mo add-on to Verified, or included with Verified Business.

What trust grade levels does AI-Signed offer?

AI-Signed assigns four trust grade levels based on your score: Platinum (A+, 95-100 points), Gold (A, 85-94 points), Silver (B, 70-84 points), and Bronze (C, 55-69 points). Your grade determines the badge level visible to visitors and AI agents.

What checks does AI-Signed perform?

AI-Signed runs 43 checks across 5 categories: Identity Verification (DNS ownership, WHOIS, payment identity), Technical Security (SSL, DNSSEC, security headers, HTTPS), Content Trust (privacy policy, terms of service, contact information), Reputation Analysis (domain age, blocklist checks, Safe Browsing), and AI Readiness (robots.txt, structured data, llms.txt, AI plugin compatibility).

AI Trust Score for formula.co

Public trust snapshot scanned 2026-04-27. 19/27 checks passing (70/100). Is formula.co ready to be recommended by ChatGPT, Perplexity, and AI search engines?

70/100

Public signals from formula.co

SSL / TLS

7/7 passing

Security headers

3/6 passing

Content

6/7 passing

AI readiness

3/7 passing

CSP header

present

Top gaps for formula.co

X-Content-Type-Options header

missing

xcontent_header

Referrer-Policy header

missing

referrer_header

Permissions-Policy header

missing

permissions_header

llms txt

missing

llms_txt

ai plugin

missing

ai_plugin

What formula.co gets right

ssl valid

present

ssl_valid

https redirect

present

https_redirect

hsts enabled

present

hsts_enabled

cert expiry

present

cert_expiry

cert issuer

present

cert_issuer

These signals are a snapshot of formula.co's public configuration, not a full 43-point AI-Signed trust audit. Register below for ongoing monitoring, AI-chatbot verification, and the embeddable trust badge.

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What the full scan covers

Identity

DNS ownership, WHOIS, payment verification

Security

SSL, HSTS, CSP, security headers, TLS version

Content

Reputation

Domain age, blocklists, Safe Browsing

AI Readiness

robots.txt, structured data, llms.txt, sitemap

Trust Badge

Embeddable badge for humans and AI agents

Get Verified — $5.99/mo

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