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

# Try it

> Sandbox path for first successful A2A call.

# Try it (sandbox)

## Option A — Provision

1. Call `agent.provision` (no key) — receive starter credits
2. Call `billing.balance` with the new key
3. Import one consented contact (a phone number **you control**)
4. Complete [Trust Setup](/compliance/trust-setup) steps you can
5. Do **not** message real customers until first-send readiness is complete

## Option B — Partner sandbox

1. `partner.register`
2. `partner.onboardCustomer` with a test `external_ref`
3. `partner.send` with `idempotency_key` to a number you control
4. Configure a webhook endpoint you own and call `partner.processOutbox`

## Safety

* Never commit or share real API keys
* There is no anonymous public “send free SMS” playground
* Partners: product surface is BizBionic only (no upstream carrier branding in your integration)
* Marketing SMS is blocked during **quiet hours** (9pm–8am recipient local). Use essential `message_intent` or schedule.
* New tenants may receive a compliance **warning** until 10DLC brand/campaign is approved — complete [Trust Setup](/compliance/trust-setup).

## Next steps

* [Authentication](/authentication)
* [Samples](/samples)