Author Schema: How to Signal Expertise to AI Engines
AI engines are trained to care about who wrote a piece of content, not just what it says. Author credentials are a core E-E-A-T signal: a medical article written by a licensed physician is more citeable than the same information written anonymously. Author schema, implemented as Person JSON-LD markup, makes author identity and credentials machine-readable. For businesses publishing substantive content in professional or regulated categories, author schema is one of the highest-leverage AEO additions available.
Why author identity matters to AI engines
AI engines use author credentials as a credibility filter, particularly for content in health, legal, financial, and scientific categories. Content that is attributed to a credentialed expert in the relevant field is more likely to be cited than identical content that is unattributed or attributed to an anonymous contributor. This is consistent with how AI engines are trained: they learn from patterns in high-authority content, where bylines and credentials are associated with accuracy and trustworthiness. Adding machine-readable author credentials to your content upgrades it from anonymous content to expert-attributed content in the AI engine's evaluation model.
Person schema for authors
Person schema is the JSON-LD type used to describe a person. For content authors, include: name (full name as it appears on the byline), jobTitle (their role and credentials), affiliation (the organization they work for, linked to the Organization schema), url (a link to their author bio page on your site), sameAs (links to their LinkedIn profile, their professional directory page, their ORCID ID for academics), and hasCredential for specific certifications and licenses. Place the Person schema on the author's bio page and reference it from each article using the Article schema's author property.
Linking Article and Person schema
The connection between Article schema and Person schema is made through the author property. In your Article schema, set the author property to reference the Person schema for that content's author. You can do this either by embedding the Person schema object directly within the Article schema or by referencing it via @id if you have defined the Person schema as a named entity with an @id on your author bio page. The linked approach (using @id references) is preferred because it creates a durable entity connection that AI engines can follow across multiple articles by the same author.
Author bio pages as AEO assets
Each author who contributes content to your site should have a dedicated bio page. This page should include: a photo, full name and title, credentials listed plainly, a brief biography emphasizing professional background rather than personal information, links to their work on your site, and external links to their profiles on LinkedIn, professional directories, and any publications where they have been cited or published. Mark up this page with Person schema and set it as the canonical author entity that your Article schema author property references. A well-built author bio page is a persistent authority signal for every piece of content that author writes.
Expert review schema
Some content is written by generalists but reviewed by subject matter experts before publication. AI engines recognize this distinction: the 'reviewed by' attribution adds credibility even when the primary author is not a domain expert. If you use a medical reviewer, legal reviewer, or technical reviewer, add them to your Article schema using the reviewedBy property (or contributor for some schema implementations). Include their Person schema with credentials. A health article that notes it was reviewed by a licensed physician and includes the physician's Person schema with their credentials is more citable than the same article without that review attribution.
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