Obsidian MCP vs Slack MCP Server

A side-by-side look at pricing, capabilities, pros, cons, and our editorial scores.

	Obsidian MCP MCP Servers	Slack MCP Server MCP Servers
Tagline	Model Context Protocol server that lets Claude read, write, and reorganize your Obsidian vault.	Archived reference MCP server that lets Claude and other MCP clients read and post in a Slack workspace via a bot token.
Category	MCP Servers	MCP Servers
Pricing	Free· Free and open-source (MIT). No paid tiers; users only pay for their own Obsidian license if they choose Commercial/Sync/Publish add-ons.	Free· Free / open-source (MIT). Requires a Slack workspace and a Slack bot token; Slack itself is free/paid.
Model	—	—
Editorial score	—	—
Use cases	Draft new Obsidian notes from a Claude Desktop chatBulk rename or consolidate tags across a vaultSearch notes and stitch together related materialRefactor folder structure by moving notes programmaticallySummarize or rewrite existing notes in placeExpose multiple local vaults to a single AI assistantWire an Obsidian vault into Cline, Cursor, or a custom MCP agent	Channel triage and summarisationAutomated thread digestsPosting AI-generated status updatesCross-channel search and reportingStandup and retro note postingOn-call escalation repliesUser and profile lookup for routingReaction-based workflow signallingMCP server reference implementation
Pros	Twelve concrete note and tag tools cover the everyday read/write/search operations most Obsidian users need. Runs entirely locally over stdio — vault contents never leave the machine and no API keys or accounts are required. Trivial install: one npx command in Claude Desktop config, or a single Smithery CLI line. Multi-vault aware — expose several vaults and let the assistant list and target them explicitly. MIT-licensed TypeScript source that is small enough to audit or fork before pointing an agent at your notes. Works with any MCP client, not just Claude Desktop, so the same server plugs into Cline, Cursor, Zed, or custom agents.	Official reference implementation from the modelcontextprotocol project — small, readable TypeScript that documents the MCP tool pattern well Covers the eight highest-value Slack primitives (list, post, reply, react, history, thread, users, profile) with minimal ceremony Ships as both an npx package and a Docker image, so it drops straight into Claude Desktop, Cursor, or any MCP client with a JSON config snippet Standard Slack bot-token auth (xoxb-) with clearly scoped OAuth permissions — easy to reason about and to revoke Open-source under MIT, so forking or vendoring for internal hardening is straightforward Good starting point for learning how to write your own MCP server against a REST API
Cons	Full write access with no built-in undo — a bad agent call can rename, move, or delete notes irreversibly, so backups or git are mandatory. Does not talk to the running Obsidian app or its plugin API: no Dataview queries, no canvas, no graph view, no plugin actions. Search is plain text over Markdown, not the semantic/embedding search users may expect from an 'AI' Obsidian integration. Solo-maintained hobby project — the README itself notes tools are 'tested but not exhaustively' and development is ongoing. No first-party support for the Obsidian mobile app or Obsidian Sync-specific features. Requires Node.js 20+ locally, which is friction for non-technical Obsidian users used to installing community plugins from inside the app.	Archived by the maintainer on 29 May 2025 — no upstream bug fixes, security patches, or Slack API compatibility updates Read-only surface for channels (public channels only by default) and no DM, private-channel, search, files, or canvas support out of the box No pagination helpers or rate-limit backoff beyond what the Slack SDK provides, so bulk history pulls in large workspaces can be fragile Requires a workspace admin to install a bot app and mint a token, which is a real blocker in locked-down enterprise Slack tenants Bot-token model means every action is attributed to the bot user, not the human operating the assistant, which complicates audit trails
Website	github.com	github.com

Pick Obsidian MCP if

✅ Twelve concrete note and tag tools cover the everyday read/write/search operations most Obsidian users need.
✅ Runs entirely locally over stdio — vault contents never leave the machine and no API keys or accounts are required.
✅ Trivial install: one npx command in Claude Desktop config, or a single Smithery CLI line.
✅ Multi-vault aware — expose several vaults and let the assistant list and target them explicitly.

Pick Slack MCP Server if

✅ Official reference implementation from the modelcontextprotocol project — small, readable TypeScript that documents the MCP tool pattern well
✅ Covers the eight highest-value Slack primitives (list, post, reply, react, history, thread, users, profile) with minimal ceremony
✅ Ships as both an npx package and a Docker image, so it drops straight into Claude Desktop, Cursor, or any MCP client with a JSON config snippet
✅ Standard Slack bot-token auth (xoxb-) with clearly scoped OAuth permissions — easy to reason about and to revoke

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