Slack messages are built from blocks — modular components you combine to build exactly what you need. This guide covers available block types, when to use them, and how to configure them.Documentation Index
Fetch the complete documentation index at: https://docs.lithoblocks.com/llms.txt
Use this file to discover all available pages before exploring further.
Prerequisites
- Completed Quickstart
- Understanding of Placeholders
Block types overview
| Block Type | Purpose | Use Cases |
|---|---|---|
| Header | Large, bold title | Message titles, section headers |
| Section | Main content area | Text with optional image/button |
| Context | Small supplementary info | Metadata, timestamps, authors |
| Actions | Interactive buttons | User actions, navigation |
| Divider | Visual separator | Separating content sections |
| Rich Text | Formatted text | Lists, quotes, code blocks |
| Table | Structured data | Reports, comparisons, data lists |
Header block
Use for the main message title. Keep text short (under 150 characters). Plain text:Section block
The main content block. Sections contain text and can include an optional accessory (image, button, or select menu) on the right. Basic text:Status: {{order.status}} · Right: Total: ${{order.total}}
Context block
Small, muted text for metadata like timestamps or authors. Place at the bottom of sections. Example elements:Created by {{author.name}}·•·{{created_at}}
Actions block
Contains interactive buttons. Each button needs:- Label: Text on the button (e.g. “Approve”, “View Details”)
- Action ID: Unique identifier (e.g.
approve_request) - Style: Primary (green), Danger (red), or Default (gray)
- Value: Optional data when clicked (e.g.
{{request.id}})
Divider block
A horizontal line between sections. Use sparingly (1–2 per message).Rich Text block
Formatted text with lists, quotes, code blocks, and inline styling. Formatting:*bold* · _italic_ · `code` · <url|text> for links
Table block
Display tabular data. Configure data path (e.g.products) and columns with placeholders like {{this.name}}, {{this.quantity}}. See Table blocks for structure, columns, and advanced options (experimental feature).
Combining blocks
Typical layout:- Header — message title
- Section — primary content
- Divider — visual break
- Section — additional details
- Context — metadata
- Actions — buttons
Next steps
Placeholders
Dynamic data syntax for blocks.
Table blocks
Structured tabular data (experimental).
Directives
Generate repeating blocks with #each.
Interactive buttons
Configure buttons and actions.