This lesson turns from what your own site says to what Google already knows. It defines what a Knowledge Graph entry is evidence of, introduces the API and the response fields the module relies on, and corrects the most common misreadings before any lookups are run.
What this lesson covers
- The Knowledge Graph as a record of recognition rather than a ranking factor
- MIDs and why they are the only unambiguous way to name an entity
- The Knowledge Graph Search API and its limits
- Interpreting resultScore correctly
- Graph entries versus knowledge panels
- How to discuss panels with clients without overpromising
Module 2 asked what a site says about itself. Module 3 asks whether Google knows what it is talking about. The lesson starts by taking away a common assumption: a Knowledge Graph entry is not a prize, cannot be bought and has no submission form — it is evidence that machines can tell a thing apart from others with similar names. The unit of the graph is the MID, a short identifier that never changes even when the label is translated, abbreviated or replaced, which makes it the join key for every lookup in the module: two mentions with the same MID are by definition the same thing.
The lesson then reads a real Knowledge Graph Search API response field by field and is direct about the API’s status: legacy, read-only and not something to build production systems on, though perfectly suited to an audit. Its resultScore is unbounded and comparable only within a single query, so it must never be reported as a KPI, and a confident match to the wrong entity is still wrong. Finally it separates a graph entry from a knowledge panel, which is an outcome of recognition rather than something anyone can request, and explains how to say so to a client.
This lesson opens Module 3, Knowledge Graph Auditing & Entity Mapping, in The AI-powered Entity Audit, and leads into reconciling your entities to the graph at scale. It suits SEOs who have been asked to “get a knowledge panel” and anyone who needs to report Knowledge Graph findings without overstating them.