MCP Comparison · 2026
Mem vs Obsidian MCP Server
Comparing Mem and Obsidian as MCP servers? Mem (chatgpt app) is best when conversational access to mem inside chatgpt. Obsidian (read & write vault notes) is best when personal knowledge capture. Both run as Model Context Protocol servers and can coexist in the same client. Updated 2026.
Side-by-side specs
Pulled from each MCP's verified fact sheet.
| Mem | Obsidian | |
|---|---|---|
| Primary function | ChatGPT App | Read & Write Vault Notes |
| Maintainer | Mem | Community (MarkusPfundstein) |
| Pricing | Free | Open source |
| Setup complexity | Low · ~< 1 min | Low · ~3 min |
| Transport | Streamable HTTP | stdio |
| Auth model | OAuth 2.1 | API key |
| License | Proprietary | MIT |
| Language | — | Python |
| Latest version | — | latest |
| Compatible clients | ChatGPT | Claude, Cursor, Any MCP-compatible client |
| Last verified | 2026-04-30 | 2026-04-19 |
Which one should you pick?
Decision rubric drawn from each MCP's documented strengths.
Choose Mem
- Conversational access to Mem inside ChatGPT
- In-chat workflows that benefit from rich UI widgets
- One-click OAuth on Free / Go / Plus / Pro plans
Choose Obsidian
- Personal knowledge capture
- Daily-note automation
- Research assistance
Pick something else if…
- Use outside ChatGPT
- Real-time collaboration
Feature breakdown
Key capabilities each server ships out of the box.
Mem
- Listed in the official ChatGPT Apps directory
- One-click OAuth — no JSON config, no install command
- Available to logged-in ChatGPT users on supported plans
- Built on the OpenAI Apps SDK (MCP under the hood)
- Reviewed and approved by OpenAI before publication
Obsidian
- Vault-scoped read/write
- Backlink resolution
- Tag queries
- Daily-note append
- Local-only, no cloud required
Install snippets
Open the detail page for ready-to-paste config for every major client.
FAQ
Mem vs Obsidian: which MCP server should I use?
Pick Mem when conversational access to mem inside chatgpt. Pick Obsidian when personal knowledge capture. Mem is built for chatgpt app, while Obsidian focuses on read & write vault notes.
Can I run both Mem and Obsidian together?
Yes. MCP clients run each server as a separate process and surface every server's tools simultaneously, so you can install both and let your agent decide which to call. Be deliberate with auth scopes when stacking servers.
How fresh is this comparison?
Updated for 2026. Mem's last verification: 2026-04-30. Obsidian's last verification: 2026-04-19. We refresh detail-page facts on every catalog rebuild.