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📖 The AI Tool Bible

Kagi MCP Server vs Slack MCP Server

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

 Kagi MCP Server logo
Kagi MCP Server
MCP Servers
Slack MCP Server logo
Slack MCP Server
MCP Servers
TaglineOfficial Kagi Search MCP server: search and extract the web from any MCP-compatible agent.Archived reference MCP server that lets Claude and other MCP clients read and post in a Slack workspace via a bot token.
CategoryMCP ServersMCP Servers
PricingPaid· Free: $0 USD · Team: $4 USD per user/month · Enterprise: $21 USD per user/monthFree· Free / open-source (MIT). Requires a Slack workspace and a Slack bot token; Slack itself is free/paid.
Model——
Editorial score——
Use cases
agent web search groundingClaude Code documentation lookupdeep-research pipelinesURL to Markdown extraction for RAGnews and video search from an LLMKagi lens-scoped queries in agentscitation gathering for research assistantscoding agent error-message lookups
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
  • Official, first-party MCP server maintained by Kagi (not a community wrapper)
  • Two clean tools that cover the 90% agent case: search and full-page Markdown extraction
  • Both hosted (mcp.kagi.com) and local (uvx/Docker) deployment modes
  • Documented setup recipes for Claude Desktop, Claude Code, Codex CLI, Kiro, OpenCode, Smithery
  • MIT-licensed Python code, easy to fork or audit
  • Rides Kagi's ad-free, spam-de-boosted index rather than generic SERP APIs
  • Supports Kagi lenses and filters so agents can scope searches to news, docs, etc.
  • 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
  • Requires a paid Kagi API key with pay-per-use billing; not usable free
  • FastGPT and Universal Summarizer tools are currently absent (rewrite in progress)
  • Python + uv toolchain assumption raises the bar vs. a single-binary MCP server
  • Small surface area: no built-in caching, batching, or spend controls beyond Kagi's invoice cap
  • Hosted endpoint means your queries and Bearer token traverse Kagi infra, not a concern for everyone but worth noting for regulated workloads
  • 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
Websitegithub.comgithub.com
Pick Kagi MCP Server if
  • ✅ Official, first-party MCP server maintained by Kagi (not a community wrapper)
  • ✅ Two clean tools that cover the 90% agent case: search and full-page Markdown extraction
  • ✅ Both hosted (mcp.kagi.com) and local (uvx/Docker) deployment modes
  • ✅ Documented setup recipes for Claude Desktop, Claude Code, Codex CLI, Kiro, OpenCode, Smithery
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