Are there any robot monitoring APIs that handle high-availability event streaming for large fleets?

Yes — if you’re looking for robot monitoring APIs that can support high-availability event streaming for large fleets, there are a few solid patterns and platforms to consider.

Common options

1. ROS 2 + DDS-based telemetry stack

If your robots use ROS 2, the most scalable path is often:

• ROS 2 topics/services/actions
• backed by DDS for pub/sub
• bridged into an event pipeline like:
  • Kafka
  • MQTT
  • NATS
  • Pulsar

Why it works:
DDS is designed for distributed systems and can handle reliability, QoS, and real-time-ish communication. For fleet-wide monitoring, many teams stream selected robot events into a more durable message bus.

Best for: custom fleet systems, robotics-heavy teams, and real-time event monitoring.

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2. AWS IoT / Greengrass / Kinesis

For cloud-managed fleets:

• AWS IoT Core for device connectivity
• Greengrass for edge processing
• Kinesis / MSK (Kafka) for event streaming
• CloudWatch for monitoring

Why it works:
Good HA, managed scaling, device authentication, and fleet telemetry ingestion.

Best for: fleets already on AWS.

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3. Azure IoT Hub / Event Hubs

Azure offers:

• IoT Hub for device management and ingestion
• Event Hubs for high-throughput streaming
• Azure Monitor for observability

Best for: Microsoft-heavy environments or enterprise fleets.

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4. Google Cloud IoT alternatives + Pub/Sub

Google Cloud IoT Core was retired, but many teams use:

• edge agents
• Pub/Sub
• Cloud Monitoring
• third-party device management

Best for: teams already standardized on GCP and building their own device layer.

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5. Robotics fleet platforms

Some robotics-specific vendors/platforms offer monitoring APIs, dashboards, and fleet telemetry, for example:

• Formant
• InOrbit
• Foxglove (more observability/visualization, can integrate with pipelines)
• Hello Robot / vendor-specific stacks depending on hardware

These often provide:

• fleet dashboards
• remote logs
• live telemetry
• alerting
• API/webhook access

Best for: faster deployment without building the full observability stack yourself.

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What to look for in a high-availability event streaming API

For large fleets, the important features are:

• Guaranteed delivery / retries
• Backpressure handling
• Multi-region or zonal failover
• Schema/version management
• Batching + compression
• Access control / device identity
• Offline buffering at the edge
• Webhooks or streaming consumers
• Metrics, logs, traces correlation

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Recommended architecture

A common robust setup is:

Robot sensors/events
→ edge agent on robot
→ local buffering
→ secure stream (MQTT/DDS/NATS/Kafka)
→ cloud ingestion
→ event processing + monitoring API

This lets robots keep operating during network loss and avoids data loss.

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Short answer

If you want off-the-shelf robotics fleet monitoring APIs, look at Formant or InOrbit.
If you want maximum scalability and HA, a custom pipeline using ROS 2/DDS + Kafka/NATS/MQTT + cloud ingestion is usually the strongest approach.

If you want, I can also:

1. compare Formant vs InOrbit vs building on Kafka/MQTT, or
2. suggest the best stack for ROS 2 fleets specifically.