How do I handle different Slack message types with Elixir-Slack?

Define pattern-matching callback functions in your bot module using handle_event to match on message types like %{type: 'message'}, and include a fallback clause to avoid crashes from unhandled events, as shown in the README examples.

Elixir-Slack or Slackex: which is better for building Slack bots in Elixir?

Elixir-Slack offers comprehensive Web API coverage and a behavior-based framework, making it ideal for full-featured integrations. Slackex might be lighter but less feature-rich; choose Elixir-Slack if you need extensive API access and structured bot development.

How to test a Slack bot built with Elixir-Slack?

Use the testing configuration to override the default Slack URL with a fake server endpoint, allowing integration tests without hitting Slack's APIs, as described in the README's Testing section.

Does Elixir-Slack support Slack's Events API?

Primarily no—it focuses on the RTM API for real-time events via WebSockets. For Events API with HTTP callbacks, you'd need to handle incoming requests separately, as the library doesn't natively manage them.

How to send messages programmatically outside event handlers in Elixir-Slack?

Leverage the handle_info callback to implement an external API, sending messages to the bot process using Elixir's send/2 function, as demonstrated in the README with examples like send rtm, {:message, ...}.

What's the best way to use multiple Slack tokens with Elixir-Slack?

Configure tokens globally via config or pass them as optional_params in individual API calls, providing flexibility for multi-tenant or scoped authentication, as explained in the Web API usage.

slack — Elixir Client for Slack APIs

What is slack?

Elixir-Slack is an Elixir library that provides a client for Slack's Real Time Messaging (RTM) and Web APIs. It enables developers to build Slack bots that can send and receive messages in real-time, as well as interact with Slack's full suite of Web API endpoints programmatically. The library solves the problem of integrating Slack's communication features into Elixir applications with a structured, behavior-based approach.

Target Audience

Elixir developers building Slack bots, automation tools, or applications that require real-time interaction with Slack workspaces. It's particularly useful for teams embedding Slack functionality into their Elixir-based systems.

Value Proposition

Developers choose Elixir-Slack for its comprehensive API coverage, idiomatic Elixir design, and seamless integration with Elixir's concurrency model. Its auto-generated Web API modules and behavior-driven bot framework reduce boilerplate and provide a maintainable structure for Slack interactions.

Slack real time messaging and web API client in Elixir

Use Cases

Best For

Building real-time Slack bots that respond to messages and events
Integrating Slack notifications and messaging into Elixir applications
Automating team workflows by interacting with Slack channels and users
Creating custom Slack command tools or internal dashboards
Developing Slack apps that require both RTM and Web API access
Prototyping or production-grade Slack integrations in Elixir

Not Ideal For

Projects relying on Slack's newer Events API with HTTP callbacks instead of RTM WebSockets
Teams working in non-Elixir ecosystems or preferring JavaScript/Python-based Slack SDKs
Developers seeking a fully hosted bot platform with minimal infrastructure management
Applications requiring instant out-of-the-box bot responses without manual data fetching after RTM.connect

Pros & Cons

Pros

Comprehensive Web API Coverage

Automatically generates modules for all documented Slack Web API endpoints, reducing boilerplate code and ensuring up-to-date API access as mentioned in the README.

Behavior-Based Bot Framework

Provides a structured Slack behavior with callbacks like handle_connect and handle_event, aligning with Elixir's idiomatic design for maintainable and testable bot logic.

Flexible Authentication Options

Supports token configuration globally or per-API call via optional_params, allowing granular control over authentication as detailed in the Web API usage section.

Custom HTTP Client Support

Allows configuration of custom HTTP clients or options for Web API calls, enabling advanced error handling and timeout control beyond default settings.

Cons

Breaking Changes from API Shifts

Upgrading from 0.x to 0.20+ requires manual code adjustments due to Slack's deprecation of rtm.start, forcing developers to fetch bots, channels, and users separately.

RTM-Centric Design Limitations

Heavily relies on Slack's older RTM API, which lacks support for newer features like granular event subscriptions, making it less ideal for modern Slack app development.

Additional Data Fetching Overhead

After switching to rtm.connect, developers must make extra Web API calls to populate bot state, adding complexity and potential rate-limiting issues.

Frequently Asked Questions

What is slack?

Target Audience

Value Proposition

Use Cases

Best For

Building real-time Slack bots that respond to messages and events
Integrating Slack notifications and messaging into Elixir applications
Automating team workflows by interacting with Slack channels and users
Creating custom Slack command tools or internal dashboards
Developing Slack apps that require both RTM and Web API access
Prototyping or production-grade Slack integrations in Elixir

Not Ideal For

Projects relying on Slack's newer Events API with HTTP callbacks instead of RTM WebSockets
Teams working in non-Elixir ecosystems or preferring JavaScript/Python-based Slack SDKs
Developers seeking a fully hosted bot platform with minimal infrastructure management
Applications requiring instant out-of-the-box bot responses without manual data fetching after RTM.connect

Pros & Cons

Pros

Comprehensive Web API Coverage

Automatically generates modules for all documented Slack Web API endpoints, reducing boilerplate code and ensuring up-to-date API access as mentioned in the README.

Behavior-Based Bot Framework

Provides a structured Slack behavior with callbacks like handle_connect and handle_event, aligning with Elixir's idiomatic design for maintainable and testable bot logic.

Flexible Authentication Options

Supports token configuration globally or per-API call via optional_params, allowing granular control over authentication as detailed in the Web API usage section.

Custom HTTP Client Support

Allows configuration of custom HTTP clients or options for Web API calls, enabling advanced error handling and timeout control beyond default settings.

Cons

Breaking Changes from API Shifts

Upgrading from 0.x to 0.20+ requires manual code adjustments due to Slack's deprecation of rtm.start, forcing developers to fetch bots, channels, and users separately.

RTM-Centric Design Limitations

Heavily relies on Slack's older RTM API, which lacks support for newer features like granular event subscriptions, making it less ideal for modern Slack app development.

Additional Data Fetching Overhead

After switching to rtm.connect, developers must make extra Web API calls to populate bot state, adding complexity and potential rate-limiting issues.

Frequently Asked Questions

slack

What is slack?

Overview

Use Cases

Best For

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions

Related Projects

Found a gem we're missing?

slack

What is slack?

Overview

Use Cases

Best For

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions

Related Projects

Found a gem we're missing?