20 Best Slack MCP Servers, Compared (November 2026)

The short answer

Which one, for your situation

Top MCP servers for Slack

The ranking, with the evidence

• 1

  slack-mcp

  Community favourite

  karbassi/slack-mcp ↗

  Best for: Teams needing an AI agent to read and act across Slack messages, channels, files, and search: it exposes tools for those Slack API operations.

  The server exposes 100 Slack API tools for operations including messages, channels, files, canvases, lists, search, reactions, apps, and calls. It requires a Slack app installed to the workspace and a User OAuth Token supplied via SLACK_XOXP_TOKEN, and its undocumented endpoints additionally require session tokens (xoxc and xoxd).

  Score 69.7: show every number behind it

  • Adoption90 / 100 · weight 40%
    • GitHub stars15
    • npm downloadsnot measured
      no npm package
    • Used through Glama88
  • Maintenance77 / 100 · weight 24%
    • Last commit touching this server100
    • Repository maintenance grade55
    • Commit cadence40
  • Momentum0 / 100 · weight 14%
    • Stars gained, relative to size0
    • Stars gained, absolute0
    • npm download trendnot measured
      no download history for the selected registry
  • Tool quality48 / 100 · weight 13%
    • Tool description quality40
    • Built and inspected by Glama100
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  69.7

  × relevance: the keyword is dedicated here

  1.00

  × continuity: actively changing

  1.00

  × evidence: widely adopted

  1.00

  Composite score

  69.7

• 2

  Slack MCP

  Abandoned but popular

  korotovsky/slack-mcp-server ↗

  Best for: Read-only Slack history retrieval for a workspace: it exposes channels_list and conversations_history, with cursor pagination for messages.

  Slack MCP is a Model Context Protocol server for Slack workspaces that exposes channels_list to get channels and conversations_history to fetch channel messages with cursor pagination. Before choosing it, note that no npm package is published and no PyPI package is attributed.

  Score 67.5: show every number behind it

  • Adoption82 / 100 · weight 40%
    • GitHub stars82
    • npm downloadsnot measured
      no npm package
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance46 / 100 · weight 24%
    • Last commit touching this server68
      dated from the last commit on the default branch, re-read from GitHub at publication; github.com shows a push 113 days ago, which counts every ref; the stored date would have published 113 days ago
    • Repository maintenance grade30
    • Commit cadence5
  • Momentum51 / 100 · weight 14%
    • Stars gained, relative to size47
    • Stars gained, absolute58
    • npm download trendnot measured
      no download history for the selected registry
  • Tool quality58 / 100 · weight 13%
    • Tool description quality50
    • Built and inspected by Glama100
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  67.5

  × relevance: the keyword is dedicated here

  1.00

  × continuity: actively changing

  1.00

  × evidence: widely adopted

  1.00

  Composite score

  67.5

• 3

  Slack MCP Server

  Community favourite

  jtalk22/slack-mcp-server ↗

  Best for: Slack workspaces on the free plan: it reads unreads, threads, and search via a browser session, with 20 tools and no app install.

  The server exposes 20 tools for reading Slack conversations and unreads, searching messages, listing users, sending messages, managing reactions, and saving workflow profiles using Slack session tokens. Its token refresh path requires a signed-in Chrome on macOS, and Enterprise Grid workspaces may have Slack end sessions it sees as automated, so the README points those users to Slack's official MCP server.

  Score 67.2: show every number behind it

  • Adoption63 / 100 · weight 40%
    • GitHub stars38
    • npm downloads57
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance95 / 100 · weight 24%
    • Last commit touching this server100
    • Repository maintenance grade80
    • Commit cadence100
  • Momentum8 / 100 · weight 14%
    • Stars gained, relative to size0
    • Stars gained, absolute0
    • npm download trend34
  • Tool quality71 / 100 · weight 13%
    • Tool description quality63
    • Built and inspected by Glama100
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  67.2

  × relevance: the keyword is dedicated here

  1.00

  × continuity: actively changing

  1.00

  × evidence: widely adopted

  1.00

  Composite score

  67.2

• 4

  slack-mcp

  Steady

  redhat-community-ai-tools/slack-mcp ↗

  Best for: Teams deploying an AI assistant with a scoped Slack bot token: it exposes 22 tools for reading threads, posting messages, searching, and managing channels.

  slack-mcp is an MCP server that connects AI assistants to Slack through 22 tools for reading channel history and threads, posting messages, searching, managing channels, sending DMs, and handling reactions and usergroups. It requires Slack credentials, either a bot token with the documented OAuth scopes or browser-session tokens that the setup script extracts through Playwright or the desktop app.

  Score 49.9: show every number behind it

  • Adoption41 / 100 · weight 40%
    • GitHub stars41
    • npm downloadsnot measured
      no npm package
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance82 / 100 · weight 24%
    • Last commit touching this server100
    • Repository maintenance grade55
    • Commit cadence65
  • Momentum35 / 100 · weight 14%
    • Stars gained, relative to size44
    • Stars gained, absolute21
    • npm download trendnot measured
      no download history for the selected registry
  • Tool quality68 / 100 · weight 13%
    • Tool description quality60
    • Built and inspected by Glama100
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  58.7

  × relevance: the keyword is dedicated here

  1.00

  × continuity: actively changing

  1.00

  × evidence: modest but real audience

  0.85

  Composite score

  49.9

• 5

  Beever Atlas

  Abandoned but popular

  Beever-AI/beever-atlas ↗

  Best for: Teams whose Slack history should become a cited, queryable knowledge base: it exposes 28 tools for channel Q&A, fact search, expert finding and decision tracing.

  Beever Atlas syncs Slack, Discord, Teams and Mattermost channels into a fact and wiki store, then exposes 28 MCP tools spanning retrieval (ask_channel, search_channel_facts, search_memory), wiki reading (list_wiki_pages, read_wiki_page, get_wiki_page) and graph queries (find_experts, search_relationships, trace_decision_history). Answers appear only after ingestion, so a session starts with whoami and list_connections to confirm access, then trigger_sync and get_job_status to build the index, and note that no npm or PyPI package is published, so it is installed from the repository.

  Score 49.3: show every number behind it

  • Adoption66 / 100 · weight 40%
    • GitHub stars66
    • npm downloadsnot measured
      no npm package
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance46 / 100 · weight 24%
    • Last commit touching this server68
      dated from the last commit on the default branch, re-read from GitHub at publication; github.com shows a push 57 days ago, which counts every ref; the stored date would have published 57 days ago
    • Repository maintenance grade30
    • Commit cadence5
  • Momentum26 / 100 · weight 14%
    • Stars gained, relative to size28
    • Stars gained, absolute24
    • npm download trendnot measured
      no download history for the selected registry
  • Tool quality100 / 100 · weight 13%
    • Tool description quality93
    • Built and inspected by Glama100
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integrates100

  Weighted mean of the five

  63.2

  × relevance: the keyword is declared here

  0.78

  × continuity: actively changing

  1.00

  × evidence: widely adopted

  1.00

  Composite score

  49.3

• 6

  lobu

  Steady

  lobu-ai/lobu ↗

  Best for: Teams that need persistent shared context across Slack, GitHub, CRM, and other sources: it provides an MCP endpoint with OAuth setup for connecting those sources.

  Lobu documents an MCP endpoint that connects AI clients to sources such as Slack, GitHub, and CRM and maintains shared, permission-aware, event-based context. Setup requires completing OAuth and connecting the sources whose context should be shared.

  Score 44.4: show every number behind it

  • Adoption59 / 100 · weight 40%
    • GitHub stars59
    • npm downloadsnot measured
      npm names no repository for lobu-monorepo, so its downloads cannot be attributed
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance100 / 100 · weight 24%
    • Last commit touching this server100
    • Repository maintenance grade100
    • Commit cadence100
  • Momentum60 / 100 · weight 14%
    • Stars gained, relative to size71
    • Stars gained, absolute44
    • npm download trendnot measured
      no download history for the selected registry
  • Tool quality≈68 / 100 · weight 13%
    • Tool description quality≈68
      tool descriptions not yet scored
    • Built and inspected by Glamanot measured
      never built and inspected by Glama
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integrates100

  Weighted mean of the five

  74.0

  × relevance: the keyword is tagged here

  0.60

  × continuity: actively changing

  1.00

  × evidence: widely adopted

  1.00

  Composite score

  44.4

• 7

  Graphlit MCP Server

  Abandoned but popular

  graphlit/graphlit-mcp-server ↗

  Best for: Slack-centric knowledge base: it provides Slack ingestion and notification connectors plus query and relevant-source retrieval tools across a Graphlit project.

  The Graphlit MCP Server documents ingestion connectors for sources such as Slack, Gmail, Google Drive, GitHub, and podcasts, along with retrieval, RAG, extraction, publishing, web crawling, and notification tools tied to a Graphlit project. It requires an active Graphlit account and the environment ID, organization ID, and JWT secret from the Graphlit API settings dashboard.

  Score 43.5: show every number behind it

  • Adoption71 / 100 · weight 40%
    • GitHub stars64
    • npm downloads44
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance25 / 100 · weight 24%
    • Last commit touching this server42
    • Repository maintenance grade5
    • Commit cadence5
  • Momentum25 / 100 · weight 14%
    • Stars gained, relative to size0
    • Stars gained, absolute0
    • npm download trend100
  • Tool quality≈68 / 100 · weight 13%
    • Tool description quality≈68
      tool descriptions not yet scored
    • Built and inspected by Glamanot measured
      never built and inspected by Glama
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integrates100

  Weighted mean of the five

  55.8

  × relevance: the keyword is declared here

  0.78

  × continuity: actively changing

  1.00

  × evidence: widely adopted

  1.00

  Composite score

  43.5

• 8

  Slack MCP Server

  Dormant

  ubie-oss/slack-mcp-server ↗

  Best for: Slack assistants that must find messages by user or date and reply in threads: eleven tools cover filtered message search, thread replies and channel history.

  The server exposes eleven tools for listing channels, posting messages, replying in threads, adding reactions, reading channel history and thread replies, and searching or looking up channels, users and messages, over either stdio or streamable HTTP transport. Before choosing it, note that installation is not a plain public npm install: the package is hosted in the GitHub registry and needs a personal access token, and message search additionally requires a Slack user token alongside the bot token.

  Score 42.7: show every number behind it

  • Adoption51 / 100 · weight 40%
    • GitHub stars51
    • npm downloadsnot measured
      no npm package
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance46 / 100 · weight 24%
    • Last commit touching this server68
    • Repository maintenance grade30
    • Commit cadence5
  • Momentum0 / 100 · weight 14%
    • Stars gained, relative to size0
    • Stars gained, absolute0
    • npm download trendnot measured
      no download history for the selected registry
  • Tool quality76 / 100 · weight 13%
    • Tool description quality68
    • Built and inspected by Glama100
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  50.2

  × relevance: the keyword is dedicated here

  1.00

  × continuity: actively changing

  1.00

  × evidence: modest but real audience

  0.85

  Composite score

  42.7

• 9

  Slack MCP Server

  Abandoned but popular

  modelcontextprotocol/servers ↗

  Best for: When a Claude client must interact with a Slack workspace, the server provides an MCP interface to the Slack API.

  The server connects Claude to Slack through the Slack API over MCP. It is distributed as the npm package @modelcontextprotocol/server-slack, and no PyPI package is attributed to it.

  Score 42.0: show every number behind it

  • Adoption95 / 100 · weight 40%
    • GitHub stars95
    • npm downloadsnot measured
      npm names no repository for @modelcontextprotocol/server-slack, so its downloads cannot be attributed
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance18 / 100 · weight 24%
    • Last commit touching this server18
      dated from the last commit on the default branch, re-read from GitHub at publication; github.com shows a push 2 days ago, which counts every ref
    • Repository maintenance gradenot measured
      repository is active but this server inside it is not
    • Commit cadencenot measured
      repository is active but this server inside it is not
  • Momentum62 / 100 · weight 14%
    • Stars gained, relative to size37
    • Stars gained, absolute100
    • npm download trendnot measured
      no download history for the selected registry
  • Tool quality≈76 / 100 · weight 13%
    • Tool description quality≈68
      tool descriptions not yet scored
    • Built and inspected by Glama100
  • Trust≈100 / 100 · weight 9%
    • License≈100
      no license detected
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  70.0

  × relevance: the keyword is dedicated here

  1.00

  × continuity: no change in over a year

  0.60

  × evidence: widely adopted

  1.00

  Composite score

  42.0

• 10

  One

  Steady

  withoneai/mcp ↗

  Best for: Slack alongside other connected apps through one setup: it exposes three universal tools that find and execute actions across platforms without adding per-platform tools.

  One exposes three tools: one lists the platforms connected in a One account, one finds the action matching each requested operation across those platforms together with its documentation, and one executes the chosen action. Using it assumes a One account with Slack connected, either through the hosted OAuth endpoint or a local npx run, since requests are proxied through One and no platform API keys are managed directly.

  Score 40.2: show every number behind it

  • Adoption57 / 100 · weight 40%
    • GitHub stars28
    • npm downloads53
      downloads capped: not corroborated by repository audience
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance100 / 100 · weight 24%
    • Last commit touching this server100
    • Repository maintenance grade100
    • Commit cadence100
  • Momentum37 / 100 · weight 14%
    • Stars gained, relative to size38
    • Stars gained, absolute16
    • npm download trend58
  • Tool quality98 / 100 · weight 13%
    • Tool description quality90
    • Built and inspected by Glama100
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integrates100

  Weighted mean of the five

  73.6

  × relevance: the keyword is declared here

  0.78

  × continuity: actively changing

  1.00

  × evidence: small audience

  0.70

  Composite score

  40.2

• 11

  Slack MCP Server AI Agent Template

  Steady

  slack-samples/bolt-js-slack-mcp-server ↗

  Best for: Prototyping a Bolt for JavaScript Slack app using Slack MCP and OpenAI: it demonstrates sending a #general message or creating a canvas as the user.

  The README documents a Bolt for JavaScript template that uses OpenAI models and the Slack MCP server for a Slack app whose DM chatbot offers static options to send a #general message or create a canvas as the user. It is a beta template and requires a Slack app configured with OAuth user tokens, individual user installations, and an OpenAI API key.

  Score 39.2: show every number behind it

  • Adoption31 / 100 · weight 40%
    • GitHub stars31
    • npm downloadsnot measured
      no npm package
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance92 / 100 · weight 24%
    • Last commit touching this server100
    • Repository maintenance grade80
    • Commit cadence85
  • Momentum28 / 100 · weight 14%
    • Stars gained, relative to size36
    • Stars gained, absolute15
    • npm download trendnot measured
      no download history for the selected registry
  • Tool quality≈68 / 100 · weight 13%
    • Tool description quality≈68
      tool descriptions not yet scored
    • Built and inspected by Glamanot measured
      never built and inspected by Glama
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integrates100

  Weighted mean of the five

  56.0

  × relevance: the keyword is dedicated here

  1.00

  × continuity: actively changing

  1.00

  × evidence: small audience

  0.70

  Composite score

  39.2

• 12

  slack-explorer-mcp

  Dormant

  shibayu36/slack-explorer-mcp ↗

  Best for: Slack workspace information retrieval across messages, threads, files, canvases, and user profiles: it exposes tools for those data types using a User Token.

  The README documents tools for message and file search with filters, thread replies, bulk user profiles, user-name search, and canvas content retrieval. It requires a Slack User Token (xoxp-) with history, search, profile, user, and file scopes, and the README's Docker configuration passes it via SLACK_USER_TOKEN.

  Score 39.0: show every number behind it

  • Adoption43 / 100 · weight 40%
    • GitHub stars43
    • npm downloadsnot measured
      no npm package
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance46 / 100 · weight 24%
    • Last commit touching this server68
    • Repository maintenance grade30
    • Commit cadence5
  • Momentum0 / 100 · weight 14%
    • Stars gained, relative to size0
    • Stars gained, absolute0
    • npm download trendnot measured
      no download history for the selected registry
  • Tool quality≈68 / 100 · weight 13%
    • Tool description quality≈68
      tool descriptions not yet scored
    • Built and inspected by Glamanot measured
      never built and inspected by Glama
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  45.9

  × relevance: the keyword is dedicated here

  1.00

  × continuity: actively changing

  1.00

  × evidence: modest but real audience

  0.85

  Composite score

  39.0

• 13

  DuDuClaw

  Steady

  zhixuli0406/DuDuClaw ↗

  Best for: AI coding agents that need local persistent memory and a Markdown wiki: it exposes 24 memory, profile, code-map, and wiki tools with no gateway required.

  DuDuClaw exposes 24 MCP tools for local persistent memory, per-user profile facts, repository code mapping, and a Markdown wiki with read, write, search, lint, export, graph, and sharing operations. The exposed tools do not include Slack messaging operations; Slack appears as a channel in the larger DuDuClaw gateway.

  Score 35.2: show every number behind it

  • Adoption47 / 100 · weight 40%
    • GitHub stars43
    • PyPI downloads29
      PyPI downloads show no weekday rhythm; halved
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance95 / 100 · weight 24%
    • Last commit touching this server100
    • Repository maintenance grade80
    • Commit cadence100
  • Momentum54 / 100 · weight 14%
    • Stars gained, relative to size49
    • Stars gained, absolute24
    • PyPI download trend100
  • Tool quality83 / 100 · weight 13%
    • Tool description quality75
    • Built and inspected by Glama100
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  69.0

  × relevance: the keyword is tagged here

  0.60

  × continuity: actively changing

  1.00

  × evidence: modest but real audience

  0.85

  Composite score

  35.2

• 14

  claude-slack-bridge

  Steady

  tomeraitz/claude-slack-bridge ↗

  Best for: Claude Code sessions that need a human mid-task: it exposes a blocking ask_on_slack tool that posts to a Slack thread and waits for the reply.

  The server documents an MCP tool named ask_on_slack that posts a question to Slack and blocks until the reply arrives in the thread, alongside a Slack bot that tags into a channel and runs claude -p in whichever project directory that channel is mapped to. Adopting it means running its own Docker container with a Slack app's bot and app tokens, since the project's .mcp.json entry calls docker exec into that container and the channel-to-project mapping is kept in projects.json.

  Score 35.1: show every number behind it

  • Adoption39 / 100 · weight 40%
    • GitHub stars39
    • npm downloadsnot measured
      no npm package
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance70 / 100 · weight 24%
    • Last commit touching this server88
      dated from the last commit on the default branch, re-read from GitHub at publication; github.com shows a push 33 days ago, which counts every ref; the stored date would have published 33 days ago
    • Repository maintenance grade55
    • Commit cadence40
  • Momentum0 / 100 · weight 14%
    • Stars gained, relative to size0
    • Stars gained, absolute0
    • npm download trendnot measured
      no download history for the selected registry
  • Tool quality≈68 / 100 · weight 13%
    • Tool description quality≈68
      tool descriptions not yet scored
    • Built and inspected by Glamanot measured
      never built and inspected by Glama
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  50.1

  × relevance: the keyword is dedicated here

  1.00

  × continuity: actively changing

  1.00

  × evidence: small audience

  0.70

  Composite score

  35.1

• 15

  docbrain

  Steady

  docbrain-ai/docbrain ↗

  Best for: Teams needing self-hosted, read-only documentation from Slack and GitHub PRs: DocBrain ingests those sources and returns cited answers that flag changed sources.

  DocBrain documents a self-hosted, read-only engine that ingests Slack, GitHub pull requests, chat threads, incidents, and deploys, then provides cited answers in an editor, Slack, a CLI, or a web app and can export answers as offline-checkable files. Before choosing it, note that there is no published npm or PyPI package, so setup follows the repository's git clone and Docker Compose flow and requires an LLM provider and API keys.

  Score 34.4: show every number behind it

  • Adoption39 / 100 · weight 40%
    • GitHub stars39
    • npm downloadsnot measured
      no npm package
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance95 / 100 · weight 24%
    • Last commit touching this server100
    • Repository maintenance grade80
    • Commit cadence100
  • Momentum49 / 100 · weight 14%
    • Stars gained, relative to size63
    • Stars gained, absolute29
    • npm download trendnot measured
      no download history for the selected registry
  • Tool quality≈68 / 100 · weight 13%
    • Tool description quality≈68
      tool descriptions not yet scored
    • Built and inspected by Glamanot measured
      never built and inspected by Glama
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  63.0

  × relevance: the keyword is declared here

  0.78

  × continuity: actively changing

  1.00

  × evidence: small audience

  0.70

  Composite score

  34.4

• 16

  Workstream

  Steady

  ahmad-codex/workstream-mcp ↗

  Best for: Teams coordinating multiple AI agents and humans on shared plans: it offers atomic expiring claims, a state machine, and GitHub Projects and Slack synchronization.

  Workstream exposes 36 MCP tools for projects, plans, tasks, claims, findings, attempts and verdicts, backed by Postgres and synced to GitHub Projects and Slack. Before choosing it, note that MCP access uses a URL token and GitHub Projects V2 and Slack synchronization require separate admin setup.

  Score 31.8: show every number behind it

  • Adoption28 / 100 · weight 40%
    • GitHub stars15
    • npm downloadsnot measured
      no npm package
    • Used through Glama26
  • Maintenance95 / 100 · weight 24%
    • Last commit touching this server100
    • Repository maintenance grade80
    • Commit cadence100
  • Momentum42 / 100 · weight 14%
    • Stars gained, relative to size55
    • Stars gained, absolute23
    • npm download trendnot measured
      no download history for the selected registry
  • Tool quality73 / 100 · weight 13%
    • Tool description quality65
    • Built and inspected by Glama100
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  58.2

  × relevance: the keyword is declared here

  0.78

  × continuity: actively changing

  1.00

  × evidence: small audience

  0.70

  Composite score

  31.8

• 17

  OpenTabs

  Abandoned but popular

  opentabs-dev/opentabs ↗

  Best for: Slack access from an MCP client without requesting Slack API credentials: it calls Slack's internal web APIs through your own already-logged-in Chrome session.

  It ships 42 MCP tools that mostly drive the browser and the extension itself (tab control, screenshots, script execution, network capture, plugin management), with app-specific Slack tools arriving through separately installed plugins. Before anything works you need Node.js 22+, Chrome with the unpacked extension loaded from ~/.opentabs/extension, and every tool left off until you explicitly enable it.

  Score 31.7: show every number behind it

  • Adoption75 / 100 · weight 40%
    • GitHub stars75
    • npm downloadsnot measured
      no npm package
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance63 / 100 · weight 24%
    • Last commit touching this server88
      dated from the last commit on the default branch, re-read from GitHub at publication; github.com shows a push 7 days ago, which counts every ref; the stored date would have published 7 days ago
    • Repository maintenance grade55
    • Commit cadence5
  • Momentum79 / 100 · weight 14%
    • Stars gained, relative to size86
    • Stars gained, absolute69
    • npm download trendnot measured
      no download history for the selected registry
  • Tool quality78 / 100 · weight 13%
    • Tool description quality70
    • Built and inspected by Glama100
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  75.5

  × relevance: the keyword is mentioned here

  0.42

  × continuity: actively changing

  1.00

  × evidence: widely adopted

  1.00

  Composite score

  31.7

• 18

  raposa-mcp

  Steady

  agentlabbusiness/raposa-mcp ↗

  Best for: High-stakes agent actions needing named human approval via Slack, email, Telegram, or console before execution: it exposes request_human_approval, create_approval, and get_approval.

  raposa-mcp is a stdio MCP server with 3 tools that create, read, and wait on human approval requests, returning approved only when a named human approves and sealing decisions in a hash-chained audit log. It does not expose general Slack messaging tools: Slack is one channel where an approver can see a request, and the MCP process must inherit RAPOSA_API_KEY from its environment.

  Score 31.6: show every number behind it

  • Adoption32 / 100 · weight 40%
    • GitHub stars8
    • PyPI downloads31
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance92 / 100 · weight 24%
    • Last commit touching this server100
    • Repository maintenance grade80
    • Commit cadence85
  • Momentum25 / 100 · weight 14%
    • Stars gained, relative to size33
    • Stars gained, absolute12
    • PyPI download trendnot measured
      no download history for the selected registry
  • Tool quality81 / 100 · weight 13%
    • Tool description quality73
    • Built and inspected by Glama100
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integrates100

  Weighted mean of the five

  57.9

  × relevance: the keyword is declared here

  0.78

  × continuity: actively changing

  1.00

  × evidence: small audience

  0.70

  Composite score

  31.6

• 19

  Slack User MCP Server

  Dormant

  lars-hagen/slack-user-mcp ↗

  Best for: Posting and threading in Slack as a user: it exposes tools to post messages, reply in threads, add reactions, and read channel history.

  It exposes 8 tools for listing public channels, posting messages, replying to threads, adding reactions, reading channel and thread history, and retrieving user profiles. It requires a Slack user OAuth token starting with xoxp- with the documented scopes, and it is not published to npm, so installation is from a local clone and build.

  Score 29.8: show every number behind it

  • Adoption27 / 100 · weight 40%
    • GitHub stars27
    • npm downloadsnot measured
      no npm package
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance57 / 100 · weight 24%
    • Last commit touching this server88
      dated from the last commit on the default branch, re-read from GitHub at publication; github.com shows a push 6 days ago, which counts every ref; the stored date would have published 6 days ago
    • Repository maintenance grade30
    • Commit cadence5
  • Momentum0 / 100 · weight 14%
    • Stars gained, relative to size0
    • Stars gained, absolute0
    • npm download trendnot measured
      no download history for the selected registry
  • Tool quality71 / 100 · weight 13%
    • Tool description quality63
    • Built and inspected by Glama100
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  42.6

  × relevance: the keyword is dedicated here

  1.00

  × continuity: actively changing

  1.00

  × evidence: small audience

  0.70

  Composite score

  29.8

• 20

  call-a-human-mcp

  Steady

  nishantmodak/call-a-human-mcp ↗

  Best for: Before an agent runs a destructive action: it exposes request_approval and ask_human, which block until a human replies via Slack, Telegram or macOS dialog.

  The server exposes two tools, ask_human and request_approval, and routes each request through one configured channel (Slack, Telegram, or native macOS dialogs), holding the tool call open until the human responds or the timeout expires. Setup is per machine: it runs as a local process installed with uv and referenced by full path in the agent's config file, and the macOS dialog option does not exist on Linux or Windows, where Slack or Telegram credentials are required instead.

  Score 29.8: show every number behind it

  • Adoption30 / 100 · weight 40%
    • GitHub stars30
    • npm downloadsnot measured
      no npm package
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance90 / 100 · weight 24%
    • Last commit touching this server88
    • Repository maintenance grade100
    • Commit cadence85
  • Momentum0 / 100 · weight 14%
    • Stars gained, relative to size0
    • Stars gained, absolute0
    • npm download trendnot measured
      no download history for the selected registry
  • Tool quality91 / 100 · weight 13%
    • Tool description quality83
    • Built and inspected by Glama100
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  54.6

  × relevance: the keyword is declared here

  0.78

  × continuity: actively changing

  1.00

  × evidence: small audience

  0.70

  Composite score

  29.8

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