# Knowledge Graph

> A structured network of entities and the typed relationships between them, letting machines reason over facts rather than parse prose.

_The Agentic Web Lexicon · /glossary/knowledge-graph · [JSON](/api/glossary/knowledge-graph) · [all The Agentic Web Lexicon](/glossary)_

- **term:** Knowledge Graph
- **category:** optimization
- **short_def:** A structured network of entities and the typed relationships between them, letting machines reason over facts rather than parse prose.
- **long_def:** A knowledge graph stores facts as connected entities (nodes) and relationships (edges) — 'x402 is-created-by Coinbase', 'MCP is-a protocol'. Search and answer engines use knowledge graphs to disambiguate entities and answer directly, which is why consistent, structured entity data (JSON-LD, sameAs) helps a site be understood as an entity, not just indexed as pages.
- **see_also:** json-ld, eav-model, grounding
- **etymology_origin:** — (verify-against-primary-at-build)
- **related_to:** json-ld, eav-model, agentic-seo, grounding
- **contrast_with:** Unlike a document index that stores pages of text, a knowledge graph stores entities and their relationships, so a machine can answer 'who created x402' without reading a page.
- **example:** Google's Knowledge Graph is what powers the entity panel beside a search result; the same idea lets an AI engine attribute a fact to the right entity.
- **source:** https://en.wikipedia.org/wiki/Knowledge_graph
- **status:** active
- **why_it_matters:** The agentic web is a knowledge graph in the making; JSON-LD and consistent entity signals are how a site becomes a node engines can cite, not just crawl.
- **sameAs:** https://en.wikipedia.org/wiki/Knowledge_graph
- **bridge_entity:** json-ld
- **last_verified:** 2026-07-06
- **md_twin:** /glossary/knowledge-graph.md