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Structured data agent: Generate your JSON-LD code and unlock Rich Snippets

This agent audits your existing Schema.org markup, analyzes what your competitors use in the SERP, and generates an optimized JSON-LD code ready to integrate into any CMS.

Table of contents

At a glance

What is it for?

What you'll get

How to do it 

Going further

At a glance

  • What you'll do: Get an audit of your current markup, an analysis of structured data used by your competitors, and a complete JSON-LD code ready to copy and paste.
  • Time required: 5 to 10 minutes per page analyzed.
  • Ideal for: SEO teams and developers who want to maximize their chances of obtaining rich results (FAQ, Article, Product, Recipe) in Google.

What is it for?

Structured data is one of the most underused SEO levers: when implemented correctly, it allows Google to display Rich Snippets that significantly increase click-through rates. Yet most teams either don't mark up their content at all, or use incomplete schemas that never trigger any rich results.

The challenge is twofold: you first need to identify the right schema type based on search intent (FAQ, Article, Product, HowTo...), then write a complete JSON-LD with all the properties Google recommends, particularly those tied to E-E-A-T (author, publisher, dates). A single syntax error or missing property is enough to invalidate the entire markup.

This agent automates both steps: it analyzes your page and the top 3 SERP results to identify Rich Snippet opportunities, then generates a complete, valid, ready-to-use JSON-LD code.

Good to know ℹ️: The agent automatically detects opportunities to nest multiple schemas, for example an Article containing a FAQPage, a combination that is particularly effective for long informational content.

What you'll get

The agent delivers a four-part report:

  • A current state critical analysis of your existing markup: what is missing, what is incorrect, what can be improved.
  • An opportunity analysis based on the structured data your competitors use in the top 3 SERP results.
  • An optimized JSON-LD code, complete and ready to copy and paste, including E-E-A-T properties.
  • Implementation advice: where to place the code in your CMS and which variables to update with each content revision.

How to do it 

1) Access AI+ Agents

In the Semji editor, open the content you want to optimize and make sure the Focus Keyword is set. It determines the agent's SERP analysis.

Tip ✅: For existing published content, make sure the page URL is present in the editor context. The agent needs it to extract any JSON-LD markup already in place on your site.

2) Create the custom agent

In the Semji editor, navigate to the AI+ Agents feature and create a new agent with the following settings:

  • Name: Structured data expert - Schema.org
  • Instructions: Copy and paste the prompt below.
  • Tools to enable:
    • ✅ Analyze HTML
    • ✅ Google search

[PROMPT]

Click Create to save your agent.

3) Run the analysis

Once the agent is configured, launch it from the Semji editor on the open content. It automatically runs through all 5 workflow steps: content retrieval, existing markup extraction, SERP analysis, search intent comparison, and report generation.

Click Run to start the analysis.

4) Read and implement the output

Current state: start by reading the critical analysis of your existing markup. If the agent detects a mismatch between the search intent and the schema in use (for example, a Product schema on purely informational content), factor in the recommendation before implementing.

JSON-LD code: copy the generated code block and integrate it into the <head> tag of your page, or into the dedicated structured data field in your CMS (WordPress, HubSpot, Shopify...). The implementation advice specifies exactly where to place the code depending on your environment.

Variables to update: some properties like dateModified, author, or price need to be updated with each content change. The agent indicates which ones to monitor.

Important ⚠️: After implementation, always validate your markup with Google's Rich Results Test to make sure it contains no syntax errors.

Using the agent day to day

With every new publication: run the agent on any new content before going live to generate the right markup from day one.

After a content update: re-run the agent after any substantial revision to verify that the existing markup is still consistent with the updated content.

During a technical SEO audit: work through your strategic pages one by one to identify missing or invalid schemas that are costing you Rich Snippet opportunities.

Pro tip 💡: Prioritize high-potential traffic pages where Google already displays Rich Snippets for your competitors. These are the ones where the click-through rate gain will be most immediate.

Going further

Once your structured data is in place, strengthen the overall semantic consistency of your pages:

  • Use the SEO intent alignment agent to make sure the chosen schema type matches the search intent detected in the SERP.
  • Enable Semji's SEO recommendations to enrich your page's text content alongside the structured markup.
  • Consult the official Schema.org documentation to explore advanced properties specific to each schema type.

Important ⚠️: The agent never suggests misleading schemas that don't match the visible content of the page. Any markup that doesn't accurately reflect the actual content may trigger a Google manual penalty.

Useful links: