Slack

Slack Chat API

The Slack Chat API is the set of chat.* methods in the Slack Web API that lets apps and bots create and manage messages in Slack workspaces. It enables posting messages to channels and DMs with Block Kit formatting, sending ephemeral messages visible only to a specific user, replying in threads, scheduling messages for later delivery, updating or deleting existing messages, retrieving permalinks, and providing custom link unfurls.

GitHub OpenAPI

Documentation

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Documentation
https://docs.slack.dev/reference/methods

Specifications

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OpenAPI
https://raw.githubusercontent.com/api-evangelist/slack/refs/heads/main/openapi/slack-chat-openapi.yml

Schemas & Data

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JSONSchema
https://raw.githubusercontent.com/api-evangelist/slack/refs/heads/main/json-schema/slack-message-schema.json