Which memory and knowledge MCP servers are cataloged?

6 memory and knowledge MCP servers are cataloged, each with verified publisher, access, and spec-revision facts.

Which memory and knowledge MCP servers support the current spec revision?

1 memory and knowledge MCP server has verified support for the current revision (2026-07-28). The rest are on earlier revisions or unverified.

6 memory and knowledge MCP servers are cataloged, 1 with verified current-spec support.

MCP servers that store and retrieve agent memory or knowledge: semantic memory layers, knowledge graphs, note stores, and documentation retrieval.

Airweave Search - Spec Support Unverified
Listed with a remote endpoint. Spec revision support not yet verified.
atlassian-dc-mcp-confluence - Spec Support Unverified
Distributed as npm:@atlassian-dc-mcp/confluence. Spec revision support not yet verified.
Codebase Memory MCP - Spec Support Unverified
Community MCP server (by developer Martin Vogel) that indexes a codebase into a persistent knowledge graph for AI agents, distributed as a static binary via npm or PyPI and run locally over stdio. No surface names a supported MCP revision; spec support is unverified.
Context7 - Current Spec Verified
Upstash's Context7 documentation server: pulls current, version-specific library docs into prompts. Hosted at mcp.context7.com/mcp with bearer API keys (anonymous use is rate-limited); also runs locally via npm. The 4.0.0 release of 2026-08-07 migrated to the 2026-07-28 revision, and an endpoint probe the same day confirmed it.
mcp-local-rag - Spec Support Unverified
Distributed as npm:mcp-local-rag. Spec revision support not yet verified.
screenpipe - Spec Support Unverified
Distributed as npm:screenpipe-mcp. Spec revision support not yet verified.