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

# Configuration and Environment

> Exporter, policy, pricing, and environment setup for the Captar SDK.

# Configuration and Environment

## Exporter options

You can provide either a custom exporter implementation or HTTP exporter options.

For most teams, the simplest setup is an ingest URL plus an API key in the
environment so the runtime can stay portable across local, staging, and prod.

```ts theme={null}
exporter: {
  url: process.env.CAPTAR_INGEST_URL!,
  apiKey: process.env.CAPTAR_INGEST_API_KEY,
}
```

## Policy shape

```ts theme={null}
defaultPolicy: {
  budget: {
    maxSpendUsd: 2,
    finalizationReserveUsd: 0.2,
  },
  call: {
    allowedModels: ["gpt-4.1-mini"],
    maxEstimatedCostUsd: 0.5,
  },
  tool: {
    blockedTools: ["billing.refundWithoutReview"],
  },
}
```

## Environment variables

Keep the environment surface small and easy to audit. If a variable controls
privacy, spend, or export, document it right next to the startup code.

<Files>
  <File name=".env" />
</Files>

```bash theme={null}
OPENAI_API_KEY=...
CAPTAR_INGEST_URL=http://localhost:3000/api/ingest
CAPTAR_INGEST_API_KEY=
```