Slack
A Slack MCP server built with Python and FastMCP that provides complete Slack Web API integration with enhanced Block Kit support for rich message formatting. Features secure credential management via macOS Keychain with environment variable fallback, comprehensive Slack operations including channel management, messaging, file uploads, reactions, and user management, plus specialized Block Kit tools for creating formatted messages, notifications, lists, interactive elements, and code snippets. The implementation includes 25+ MCP tools covering everything from basic messaging to advanced workspace administration, making it valuable for AI assistants that need to interact with Slack workspaces, automate notifications, manage channels, or create rich interactive messages with buttons, forms, and structured layouts.
Composite of vulnerability cleanliness, spec conformance, provenance, stability, and usage signals — scanned and weighted by Cognium. Human and agent signals are tracked separately. Last scanned 2026-09-19.
Scan details: Circle-IR · 2026-09-19 · Appeal
View full trust & usage report →Metadata
- Version
- 1.0.0
- Skill type
- atomic
- Execution layer
- mcp-remote
- Category
- communication
- Source
- PulseMCP
- Repository
- github.com/piekstra/slack-mcp-server
- Author type
- human
- Last scanned
- 2026-09-19
- Updated
- 2026-09-19
Use via MCP
Resolve Slack from your agent
Streamable HTTP transport at https://api.skillsregistry.net/mcp. No auth for read tools. Discovery: .well-known/mcp.json.
One command in your shell — Claude Code wires it up and verifies the connection. Run /mcp in any session to confirm.
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp--scope user for --scope project to commit it to .mcp.json.