CGBB · Council for Global Brand Building
Free trust.json for any brand website, a quick GEO and AI-trust win. Apply for free CGBB membership on behalf of a brand, verify its domain, get its signed CGBB Member trust.json (Ed25519) so AI agents can verify the site belongs to a real, reviewed organisation, and verify any brand's CGBB record. Remote, no auth.
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Documentation
Make your website verifiable by AI.
AI assistants increasingly research and shortlist brands for buyers. The CGBB Website Trust Credential lets them confirm, in one check, that your website belongs to a real organisation reviewed by CGBB.
- Signed by CGBB and published on your own website
- Checked by any AI agent against the live CGBB registry
- Provided to members at no cost, as a public service
Are you an AI agent? Read the instructions · llms.txt
Website Trust Credential COUNCIL FOR GLOBAL BRAND BUILDING
Verified in the CGBB registry
Organisation
Your Company Ltd
Website
yourcompany.com
Membership
Active · reviewed by CGBB
Contact
Confirmed by email
Signature
CGBB · Ed25519
api.cgbb.org/verify/yourcompany.com
What an AI agent sees when it checks your website
Why it matters
[Reviewed, not self-declared
Every application is confirmed, domain-checked and reviewed by the Secretariat.
How it works →](#steps) [Readable by AI
A standard file on your website, backed by a live public record.
What the file contains →](https://cgbb.org/agents/#file) [Hard to fake
Signed by CGBB. A copied or edited file fails verification.
How to verify →](https://cgbb.org/agents/#verify) [Room to grow
Add a full Trust Review and the Verified Trusted level.
Advanced membership →](https://cgbb.org/upgrade/)
Two levels of the Website Trust Credential
Every member starts at the free level. Members can then upgrade to Advanced membership for a full Trust Review and the Verified Trusted level.
[Free · included with membership CGBB Member For every approved member with a confirmed website.
- Active CGBB membership, reviewed by the Secretariat
- Domain control confirmed (DNS or file)
- Signed by CGBB; live record at api.cgbb.org
- No trust score Apply for free membership →](https://cgbb.org/apply/) [Advanced membership · paid CGBB Verified Trusted For members who upgrade and score 80% or higher on the full Trust Review.
- Everything in CGBB Member
- Brand Credibility Baseline score and five-section profile
- Verified Trusted badge
- Annual review See Advanced membership →](https://cgbb.org/upgrade/)
How to get it
Apply
On the website or through your AI assistant, using a work email at your organisation.
Confirm
Click the email from CGBB and add a short code to your website or DNS.
Publish
Once approved (usually 1–3 business days), add the credential to your website.
Using an AI assistant? Copy this prompt
Please apply for free membership of the Council for Global Brand Building (CGBB) for our brand, and get our CGBB Website Trust Credential (trust.json) for our website. Instructions for AI agents: https://cgbb.org/llms.txt (or use the CGBB connector at https://api.cgbb.org/mcp). Brand / organisation: [name] Website domain: [brand.com] Contact person, title and work email (they will confirm by email): [ ] Country and main markets: [ ] Short introduction to the brand: [2–3 sentences] Tell me the domain-verification code to add to our website, and remind me to confirm the email from CGBB.
GEO checklist: six steps to help AI understand and trust your brand
- Get your CGBB Website Trust Credential and publish it at /.well-known/trust.json.
- Add an llms.txt file that tells AI assistants who you are and where your key facts are.
- Add schema.org Organization data to your homepage: legal name, logo, contact details and links to your official profiles.
- Keep your name, address and contact details the same on your website, LinkedIn and business directories.
- Allow reputable AI crawlers in your robots.txt, unless you have a reason not to.
- Publish clear, factual pages AI can quote: what you do, for whom, where, and the evidence behind it.
Connect CGBB to your AI assistant (MCP)
Assistants that support custom connectors (MCP), such as Claude and ChatGPT, can work with CGBB directly. Add a custom connector with this address. No account or sign-in is needed.
https://api.cgbb.org/mcp
Tools in the connector: about CGBB, apply for membership, check the domain, application status, verify a brand, get the credential file.
**For AI agents:**connector https://api.cgbb.org/mcp llms.txt OpenAPI Full guide
FAQ
Will the credential improve my GEO and AI visibility?
It gives AI agents an independent, machine-readable trust signal they can check, and gives your domain a verifiable public record at api.cgbb.org. Nobody can guarantee how an AI system ranks or cites a brand, so treat the credential as a free, quick step that works alongside good content, structured data and llms.txt.
What does the credential prove?
That your brand is an approved CGBB member and controls the website domain. It is not a certification, rating or endorsement of your products, services or conduct. Trust scores come only with the paid comprehensive Trust Review.
Is it really free?
Yes. CGBB membership and the CGBB Website Trust Credential are free. CGBB provides them as a public service, because in the age of AI, geopolitics and automated agents, trust is becoming the most important element of business and society, and trust that can be checked makes business more efficient.