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Side-by-side MCP evidence comparison
Evidence fieldMem0 MCPWatchlist candidateMCPVault for ObsidianMCP100 Selected
Task fit
Best for
  • Persistent agent memory backed by Mem0 Platform
  • Users who want a hosted MCP endpoint instead of running the archived local server
  • Obsidian users who want local search and supervised note maintenance
  • Vaults protected by version control or reliable backups
  • Users able to expose only a dedicated, bounded vault
Not ideal for
  • Sensitive memory stores without clear retention/deletion/account controls
  • Workflows where the AI should never persist user data
  • Unbacked-up personal knowledge bases
  • Read-only research where a simpler filesystem search is sufficient
  • Enterprise knowledge requiring centralized authorization and audit controls
Avoid when
  • You cannot define acceptable memory retention and deletion policy
  • You do not trust the AI client with add/update/delete memory permissions
  • The vault contains secrets, regulated data, or material that cannot reach the selected AI provider
  • Write, move, and delete tools cannot be confirmed by a human
  • The vault path cannot be narrowed to a dedicated directory
Provenance
Provenance details

First-party MCP

Mem0 · Publisher source ↗

Community implementation

BitBonsai · Publisher source ↗

Maintenance
Maintenance details

Repo: Not documented

Package: Not documented

Repo: Aug 13, 2026

Package: Aug 9, 2026

Popularity evidence
GitHub starsNot documented

1,613

GitHub stars · checked 2026-08-14T18:46:26.000Z

Package downloads / 30 daysNo reliable download data

50,394

package downloads / 30 days · checked 2026-09-08

External adoption evidenceNot documented
  • npm: package downloads: 64,139Exact attributable signal.npm: package downloads · Rolling 30 days · checked 2026-08-14T18:46:26.000ZEvidence source ↗
Client coverage
Client coverage detailsNot documented
Claude Code✓ Local stdio
Claude Desktop✓ Local stdio
Codex✓ Local stdio
VS Code✓ Local stdio
Cursor✓ Local stdio
OpenCode✓ Local stdio
Client coverage noteLocal stdio runs on your computer. Streamable HTTP connects to a remotely hosted MCP server.
Access and data
AuthenticationRequires a Mem0 Platform account/API key for the hosted MCP setup.None at the local stdio layer.
CostMem0 Platform pricing/limits apply.MCPVault is MIT licensed and free to run locally. MCP-host, model, backup, and storage costs remain.
PermissionsTools can add, search, retrieve, update, and delete long-term memories within the Mem0 account scope.The server has filesystem read and write access within the supplied vault root, including note creation, overwrite or patch, frontmatter changes, moves, tags, and deletion. Operating-system permissions and the configured vault path are the primary boundary.
Data handlingUser/agent memory content is stored in Mem0 Platform and may persist across sessions until updated/deleted according to the account's controls.Vault content and metadata are read locally and returned to the MCP client and model. Changes are written directly to local files. MCPVault states that it does not receive, store, or transmit vault data, while the selected AI provider still processes content sent by the client.
Limitations
Tradeoffs
  • Cloud hosting simplifies setup but introduces a third-party data boundary
  • Memory writes can create durable effects that outlive the current session
  • Local stdio avoids a hosted MCP service, but note contents still enter the MCP host and model context.
  • Frontmatter-aware writes are more useful than generic file access but increase integrity risk.
  • npx makes setup simple, while stricter environments may prefer a pinned and reviewed package version.
  • Version 0.16.0 migrated to MCP TypeScript SDK v2 / protocol 2026-07-28 while retaining dual-era stdio compatibility.
Risk contextHigh for sensitive contexts. Persistent memory can store private content and delete/update operations are durable; tenant, retention, audit, and revocation controls need periodic review.A selected vault can contain a large body of private knowledge, and write tools can overwrite, move, or delete it. Use a dedicated vault, reliable backups or version control, an absolute path, a reviewed package version, and explicit approval for writes.
Evidence date
Editorial review2026-09-112026-09-05
Candidate evidence2026-09-11T00:00:00.000Z2026-09-05T00:00:00.000Z

Popularity, maintenance, fit, permissions, and client support are independent evidence fields.

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