search_inline

A read tool on the Slack MCP server.

SERVERSlack SOURCEkarbassi/slack-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/karbassi-slack-mcp/search-inline.md

WHAT IT DOES

What search_inline does on Slack

AI agents call search_inline to retrieve information from Slack without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why search_inline is rated Low

The tool name 'search_inline' indicates a search/query operation, which is a Read category action that retrieves data. While the description is empty, the server context clearly identifies search as a read-only capability.

From the tool's definition Tool named 'search_inline' on a Slack MCP server described as providing 'full access to Slack: messages, channels, files, canvases, lists, search, reactions, and more.' The 'search' functionality is explicitly mentioned as part of the server's capabilities.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs search_inline safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Slack, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For search_inline, this is the rule to start with:

search_inline Allowed

search_inline is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "search_inline": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Slack, apply this rule, and every search_inline call is checked against it from then on.

FAQ

Questions about search_inline

What does the search_inline tool do? +

search_inline is a read tool on the Slack MCP server. It is categorised as a Read tool in the Slack MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on search_inline? +

Register the Slack MCP server in PolicyLayer and add a rule for search_inline: 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. Nothing to install.

What risk level is search_inline? +

search_inline is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit search_inline? +

Yes. Add a rate_limit block to the search_inline 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.

How do I block search_inline completely? +

Set action: deny in the PolicyLayer policy for search_inline. 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.

What MCP server provides search_inline? +

search_inline is provided by the Slack MCP server (karbassi/slack-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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