Schema | Slack MCP Server

Slack MCP Server

Describes the environment variables required to run the server.

Name	Required	Description	Default
`SLACK_MCP_ADD_MESSAGE_TOOL`	No	Controls message posting capability. Set to '*' to enable for all channels, or provide comma-separated channel IDs (e.g., 'C1234567890,C9876543210') to enable for specific channels. If not set, message posting is disabled by default.

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.

Server capabilities have not been inspected yet.

Functions exposed to the LLM to take actions

Name	Description
conversations_historyB	Retrieves message history from a Slack channel, DM, or thread. Supports pagination and filtering.
conversations_repliesA	Fetches all messages in a specific thread by channel and thread timestamp. Supports pagination.
conversations_add_messageA	Posts a message to a channel, thread, or DM. Supports markdown and plain text. NOTE: Disabled by default for safety - set SLACK_MCP_ADD_MESSAGE_TOOL environment variable to enable.
channels_listA	Lists workspace channels by type (public, private, DMs, group DMs) with optional popularity sorting. Supports pagination.

Interactive templates invoked by user choice

Name	Description
No prompts

Contextual data attached and managed by the client

Name	Description
No resources

We provide all the information about MCP servers via our MCP API.

curl -X GET 'https://glama.ai/api/mcp/v1/servers/oregpt/Agenticledger_MCP_Slack'

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