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Glama
sercant

web-slack-mcp

by sercant
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
Local

Server Configuration

Describes the environment variables required to run the server.

NameRequiredDescriptionDefault
SLACK_URLNoSlack web client URL.https://app.slack.com/client
SLACK_HEADLESSNoSet to '1' to run headless. Login needs a visible window, so keep '0' for the initial sign-in.0
SLACK_LOGIN_WAITNoSeconds a read tool waits for you to finish signing in before giving up.180
SLACK_PROFILE_DIRNoWhere the persistent browser profile (your session) lives..slack-profile

Instructions

Guidance the server publishes about itself, which clients place ahead of the tool catalog so the model reads it before choosing anything.

This server publishes no instructions, or was last inspected before Glama recorded them.

Capabilities

Features and capabilities supported by this server

Protocol revision2025-11-25

CapabilityDetails
tools
{
  "listChanged": false
}
prompts
{
  "listChanged": false
}
resources
{
  "subscribe": false,
  "listChanged": false
}
experimental
{}

Tools

Functions exposed to the LLM to take actions

NameDescription
check_loginA

Report whether the persistent browser session is logged into Slack.

Navigates to the Slack web client and checks for the app shell. Does not modify anything. Run login first if this reports logged out.

loginA

Open Slack in a visible window so you can log in manually.

Optional — the read tools open this window on their own when you're signed out. Polls up to wait_seconds for the app shell after you finish SSO / magic-link sign-in; the session is saved to the persistent profile.

list_channelsA

List the channels and DMs visible in your Slack sidebar.

Read-only. Note the sidebar is virtualized, so only currently-rendered entries appear; collapsed or scrolled-off sections may be omitted.

read_messagesA

Read the most recent messages in a channel or DM.

channel is matched via the quick switcher (name or partial name). Fetches up to limit most-recent messages from Slack's API and returns them oldest-first as [time] Name: text. Read-only.

read_threadA

Read the thread hanging off a message (parent + replies).

Finds the most recent message in channel whose text contains message_text, then fetches its thread via Slack's API. Returns up to limit messages, oldest-first. Read-only.

Prompts

Interactive templates invoked by user choice

NameDescription

No prompts

Resources

Contextual data attached and managed by the client

NameDescription

No resources

Deploy Server
One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

TDQS

A4.3/5.0

Scored across 5 tools

Disambiguation5/5

Each tool has a clear, distinct purpose: authentication status, channel listing, login, message reading, and thread reading. No overlap in functionality.

Naming Consistency5/5

All tools follow a consistent verb_noun naming pattern (check_login, list_channels, read_messages, read_thread), with 'login' being a natural exception as a standalone verb.

Tool Count4/5

Five tools is a reasonable count for a focused Slack read-only client. It covers the essential operations without being excessive, though a send tool might be expected.

Completeness3/5

The tool set covers authentication, channel enumeration, and message reading, but lacks write operations like sending messages or creating channels, which limits completeness for general Slack use.

Maintenance

ActivityMaintained
ResponsivenessNo issues

Resources