> ## Documentation Index
> Fetch the complete documentation index at: https://docs.polymorfa.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Sandbox limits

> The current Free number-tier limits used by Polymorfa Sandbox testing numbers.

Sandbox testing numbers use the **Free number tier**. Team plans and production
number tiers are separate billing choices.

## Free number-tier limits

| Capability                       |     Current value |
| -------------------------------- | ----------------: |
| Online session-day rate          |         0 credits |
| Throughput per testing number    | 5 messages/second |
| Included data per testing number |           0.25 GB |
| Real-number registration         |     Not available |
| Campaigns                        |     Not available |
| Outbound-call allowance          |                 0 |
| Serverless-call allowance        |                 0 |

Sandbox is intended for development and functional testing. It does not send
messages to real WhatsApp recipients.

Pool size and claim availability depend on the project. List the project
sessions or refresh Inspector instead of hard-coding a number count.

<Columns cols={2}>
  <Card title="Number pool" icon="phone" href="/sandbox/number-pool">
    List and add testing numbers.
  </Card>

  <Card title="Claims and devices" icon="lock" href="/sandbox/claims-and-devices">
    Claim a testing session for a device.
  </Card>

  <Card title="Billing" icon="credit-card" href="/console/billing">
    Team plans and production number tiers.
  </Card>

  <Card title="Quickstart" icon="bolt" href="/sandbox/quickstart">
    Create, list, and remove a testing number.
  </Card>
</Columns>