AsyncAPI channel · PostHog · PostHog Webhook Destinations

/slack

Slack destination channel. When connected to a Slack workspace, PostHog POSTs Slack-compatible JSON (plain `text` or Block Kit `blocks`) to a Slack Incoming Webhook URL each time a configured event filter or person property update matches. Message bodies are written using PostHog's `{}` template syntax against the `event` and `person` global objects.

Open source AsyncAPI → All PostHog channels PostHog provider profile
Provider: PostHog AsyncAPI: v2.6.0 Spec: PostHog Webhook Destinations Operations: 1 Messages: 1

Channel address

/slack

Operations

receiveSlackMessage
Receive a Slack-formatted message from the PostHog Slack destination.

Messages

slackMessage
Slack-formatted webhook delivery built from a PostHog destination template. The body conforms to the Slack Incoming Webhook contract and may contain plain `text` and/or Block Kit `blocks`.
Content-Type: application/json

About AsyncAPI

The AsyncAPI specification describes event-driven APIs the way OpenAPI describes request/response APIs. A channel is the named pipe — a webhook URL, a Kafka topic, a WebSocket route, an MQTT subject — that producers and consumers publish or subscribe to. Each channel carries one or more messages with structured payloads, and an operation declares whether a given party sends or receives on that channel.

Browse every event-driven channel on the APIs.io network or compare with the broader Naftiko capability, Agent Skill, and MCP server surfaces of the same providers.