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Ontology

MCP Server Ontology

MCP Server Ontology organizes individual mcp servers into a structured, composable network, enabling agents to reason, plan, and execute complex tasks as an extensible, maintainable capability system.

How it works

When querying for a task, the system traverses this graph to identify the necessary collections and mcp servers to construct a capable agent.

MCP SERVERS TAXONOMYMCP Servers1,527 totalhas_categoryDatabase & Storage0Communication0Developer Tools0AI & ML0Cloud & Infrastructure0Search & Knowledge0has_tagMCP SERVER RELATION GRAPHSimilar ToInteroperates WithComplementsBelongs Topostgresredisslackgithubbrave-searchopenaiMCP SERVER COLLECTION LIBRARYdatabase-mcp-suite6 itemscommunication-hub5 itemsdeveloper-workflow5 itemsai-ml-pipeline5 itemscloud-operations5 itemsknowledge-search5 itemsCategoryMCP ServerCollectionSimilar ToInteroperates WithComplementsBelongs To
Architecture

Three-Layer Design

How mcp servers are organized from abstract taxonomy to deployable collections.

1

MCP Server Taxonomy

The Abstraction Layer

The top layer defines the broad categorization and detailed tags of mcp servers. It organizes capabilities into categories such as:

  • Database & Storage
  • Communication
  • Developer Tools
Classification & Vocabulary — 8 categories, 0+ tags
2

MCP Server Relation Graph

The Semantic Layer

The middle layer instantiates specific mcp servers and defines how they interact. It maps relationships using edges like:

  • Similar To
  • Interoperates With
  • Complements
  • Belongs To
Reasoning & Composition — 1,527 mcp servers, 4 relationship types
3

MCP Server Collection

The Execution Layer

Groups related mcp servers into deployable units. These are the actual functional toolkits agents load at runtime:

Deployment & Execution — 6 collections, 31 mcp servers
Edges

Relationship Types

How mcp servers connect and depend on each other within the ontology.

Similar To
similar_to

MCP servers that share common tags or capabilities.

Interoperates With
interop_with

MCP servers that share linked tools and work together.

Complements
complement

MCP servers providing complementary capabilities in the same collection.

Belongs To
belong_to

MCP servers in the same taxonomy category.

MCP Server Graph
Interactive force-graph with 1,527+ mcp servers
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Collections
6 curated mcp server bundles
Browse →
MCP Servers Catalog
Browse all mcp servers with taxonomy filters
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MCP Servers ontology

Explore the mcp server network

Discover how mcp servers connect, compose, and depend on each other across the platform.

Catalog Workspace

Discover agents, MCP servers, and skills in one governed surface

Use structured catalog views to compare readiness, ownership, integrations, and deployment posture before rollout.