Send system context - Automate.ax

anthropic.sendSystemContext sends a user event followed by privileged system context in one request.

Example

automations/anthropic-send-system-context.automation.ts

import { automation, onInvocation, withPrerequisites } from "automate.ax"
import { anthropic } from "automate.ax/anthropic"

export default automation("Send system context", () => {
  withPrerequisites(onInvocation(), () => {
    anthropic.sendSystemContext({
      sessionId: "session-id",
      precedingEvent: {
        type: "user.message",
        content: [{ type: "text", text: "Review this change." }],
      },
      content: [{ type: "text", text: "Treat security defects as blocking." }],
    })
  })
})

Inputs

Requires sessionId, a preceding user.message or user.custom_tool_result, and text-only system content. Anthropic requires the system event to immediately follow its companion. Inputs use public camelCase names and accept signals.

Output and behavior

Returns both accepted events. Anthropic requests time out before the action lease and provider mutations are not retried after an uncertain response unless stated otherwise.