> For the complete documentation index, see [llms.txt](https://docs.rewst.help/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.rewst.help/documentation/agent-smith/bulk-onboarding-with-agent-smith.md).
# Bulk onboarding with Agent Smith
When a new agent registers with Rewst, the workflow hits Azure IoT Hub’s identity registry up to five times.
```
Two queries → create → get → tag‑update
```
\
On a standard‑1 (S1) hub, that registry is capped at 100 identity operations per minute, per unit.
```
100 ops ÷ 5 ops / agent ≈ **20 agents / min / unit**
```
{% hint style="warning" %}
**Important: Plan your own throttle or scale‑up**\
\
Rewst deliberately leaves rate‑limiting in your hands so you can tune roll‑outs to match your Azure budget.\
A large, unthrottled burst will exceed IoT Hub limits, pile up HTTP 429 retries, and slow down all of your Rewst workflows during onboarding.\
To avoid this, either add jitter/batching in your RMM script, or do a temporary IoT Hub scale‑up before the push.
{% endhint %}
## What is an IoT hub unit?
A *unit* is simply a slice of IoT Hub capacity you can dial up or down.\
All per‑minute limits scale linearly with both units and SKU size.
| SKU | Identity ops / min / unit | Agents / min / unit, 5‑call workflow |
| ----------- | ------------------------- | ------------------------------------ |
| **S1 / S2** | 100 | \~20 |
| **S3** | 5 000 | \~1 000 |
### Scenarios
| Choose one | How to do it | Throughput | Cost example\* |
| ---------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------ | ----------------------------------- | ---------------------------------------------- |
| Scale the hub | • bash az iot hub update -n \ --sku S3 --unit 2
• Run 5 min before deploy; scale back to S1 --unit 1 when done.
| \~2 000 agents/min | S3 ≈ $3.47 per unit‑hour → 2 units × 4 h ≈ $28 |
| Throttle in RMM with no Azure cost | • Deploy ≤ 50 agents / min / S1‑unit.
• Add jitter: Start‑Sleep (Get‑Random 5 3600) before install.
| Current hub limit (\~20 agents/min) | Longer total time; more scripting effort |
\*US‑East pricing, rounded
## Rules to follow
* Default S1 × 1 → ≈ 20 agents / min.
* Formula: `Agents / min = (100 or 5 000) × units ÷ 5`.
* Scaling is live. Existing connections stay up; a few messages may arrive out of order, which is harmless.
Pick the path that matches your timeline and budget to avoid 429s during mass onboarding.
---
# Agent Instructions
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