get_slack_channel_history
AI agents call get_slack_channel_history to retrieve information from Slack MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The 'get_' prefix combined with 'channel_history' clearly indicates a query/retrieval operation. No evidence of message creation, deletion, channel modification, or external execution. The tool fits the Read category: retrieves data with no side effects. Confidence is slightly reduced due to the missing description, but the naming convention and peer tools provide strong contextual support.
From the tool's definition Tool name 'get_slack_channel_history' indicates retrieval of historical channel messages. Sibling tools include 'get_file_preview', 'get_slack_channels', 'get_slack_users', 'search_slack_messages'—all Read operations.
Attacks that exploit this kind of access
get_slack_channel_history. It is categorised as a Read tool in the Slack MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Slack MCP Server MCP server in PolicyLayer and add a rule for get_slack_channel_history: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Slack MCP Server. Nothing to install.
get_slack_channel_history is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_slack_channel_history rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for get_slack_channel_history. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
get_slack_channel_history is provided by the Slack MCP Server MCP server (yeoamlog/slack-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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