> ## Documentation Index
> Fetch the complete documentation index at: https://docs.4mica.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Test in Sandbox

> Test payment flows safely before production.

Use Base Sepolia (`eip155:84532`) or Ethereum Sepolia until your agent can deposit collateral, sign guarantees, retry paid requests, enforce limits, and produce useful logs.

Sandbox is where you prove the guardrails, not only the happy path.

## What to test first

<Steps>
  <Step title="Fund a test wallet">
    Use a dedicated wallet with testnet gas and test collateral. Do not use a main wallet for automated signing.
  </Step>

  <Step title="Pay a known route">
    Call one test seller route and confirm the agent can receive a paid response.
  </Step>

  <Step title="Reject over-budget work">
    Configure a low per-request or per-task limit and confirm the agent refuses payments above it.
  </Step>

  <Step title="Require approval">
    Add an approval threshold and confirm the agent pauses before signing larger payments.
  </Step>

  <Step title="Audit the task">
    Confirm you can connect each payment to a task, reason, request, seller, and result.
  </Step>
</Steps>

Run the sandbox flow while watching activity in [4mica dashboard](https://app.4mica.io), so each guarantee and payment attempt is visible.

## Sandbox scenarios

* The seller is allowed and price is within budget.
* The seller is unknown and should be blocked.
* Price is higher than the per-request limit.
* Task spend exceeds the task budget.
* Network or asset is unsupported.
* Wallet has insufficient collateral.
* The seller route or `payTo` address does not match expectations.
* Paid response fails after payment.
* User stops the agent mid-task.

## Ready for production

Move beyond sandbox when you can answer:

* What is the maximum this agent can spend?
* Which sellers can it pay?
* Which categories are blocked?
* When does it ask for human approval?
* Can it stop mid-task?
* Can you see every payment and why it happened?
* Can you link payments to task logs and results?
* Do withdrawals check open guarantees and settlement obligations first?