MCP server official
Risk level
low
20/100

Slack MCP Server ↗

Slack MCP Server is an officially published MCP server from Slack. Anomity scores its risk at 20 out of 100 (low).

network:outbound credentials:access

Analysis summary

Slack MCP Server is an officially published MCP server from Slack. Anomity scores its risk at 20 out of 100 (low).

Slack's official remote MCP server gives agents access to messages, channels, users, and canvases — reading conversation history for context and posting on your behalf.

Capabilities are outbound network access and credential access. Slack is simultaneously the richest informal knowledge base in most companies and the least curated one: an integration that can search history can surface things said in confidence years ago. It is also a first-class injection surface, since anyone in a shared channel can write text an agent will later read. Scope to specific channels, prefer read-only, and treat an agent that can post as an agent that can be socially engineered into posting.

Why this entry scored 20 out of 100

This profile starts at the catalog's neutral base of 50. Because the entry is officially published, trust adjusts the score by -40. Declared high-risk capabilities add +10 (capped at +30). It matches no dangerous capability combinations. The clamped result is 20, placing it in the low band.

See the full scoring formula →

Findings

  • Published by the vendor Trust offset
    Contribution to score: -40
  • 1 high-risk capability: credentials:access High
    Contribution to score: +10

Capabilities

Every capability the entry declares, with the security implication of each.

  • network:outbound Outbound network
    Can make outbound network requests. Required for hosted model providers and remote APIs; also the path for data exfiltration if combined with read access.
  • credentials:access Credentials access
    Reads provider API keys, OAuth tokens, or other secrets from the host keychain or environment.