Based on the available sources, I don't have specific information about current Horizon service issues or widespread PDP sidecar failures. However, the Horizon service is the PDP's internal Python service bridge that facilitates communication between different components within the PDP (1) . There are several configuration options that control Horizon's health checking and restart behavior: • ​*PDP_HORIZON_HEALTH_CHECK_TIMEOUT*​: Timeout in seconds for individual health check requests (default: 1 second) • ​*PDP_HORIZON_HEALTH_CHECK_INTERVAL*​: Interval between consecutive health checks (default: 5 seconds) • ​*PDP_HORIZON_HEALTH_CHECK_FAILURE_THRESHOLD*​: Number of consecutive failures before the PDP attempts to restart Horizon (default: 12) • ​*PDP_HORIZON_STARTUP_DELAY*​: Initial delay before health checking begins after startup (default: 5 seconds) To help investigate your sidecar startup failures, could you provide: 1. Which Workspace / Project / Environment you are using 2. What calls are they performing (as SDK code or CURL) 3. Which PDP version you are running 4. Relevant logs from your PDP sidecars (especially any errors related to Horizon) This information will help engi

To learn more, see the sources I considered: [[1] Configurations](https://docs.permit.io/concepts/pdp/configuration)