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

# E2B

> Bring E2B cost into CostGraph, pulled by us or pushed by you

E2B runs hosted sandboxes for AI agents and bills each running sandbox per second for its vCPU and memory.

CostGraph reads E2B as **FOCUS 1.2** records at a grain of one record per running sandbox per day. Spend is estimated from E2B's published prices and can differ from your invoice. Only sandboxes still running when we read are seen.

## Choose how the data reaches us

<CardGroup cols={2}>
  <Card title="CostGraph pulls it" icon="cloud-arrow-down">
    You supply read-only credentials and we call E2B once a day. Nothing to run.
  </Card>

  <Card title="You push it" icon="cloud-arrow-up">
    You send us FOCUS records over the API. Credentials never leave your infrastructure.
  </Card>
</CardGroup>

## Before you begin

* In the E2B dashboard, open **Keys** and create a team API key.
* Copy the team id from **Team settings**. The key cannot look it up itself.
* The connect form links to the page where you create this credential.

## Let CostGraph pull

1. Open **Settings > Integrations** and pick **E2B**.
2. Name the connection and pick the tenant these charges belong to.
3. Enter the values you copied. The form lists what E2B needs and marks the
   optional ones.
4. Select **Connect**.

CostGraph verifies the credentials with a short fetch before saving, so a wrong
value or a missing permission fails while you are still on the form.

<Note>
  Credentials are encrypted at rest and used only to read billing data. Revoke them in
  E2B at any time and the connection stops; nothing else is affected.
</Note>

## Push it yourself

Send the charges to CostGraph as FOCUS records instead. [Push FOCUS data](/costgraph/integrations/focus-push) covers the connection id,
the `focus:write` key, and the request shape.

## Run the exporter

```bash theme={null}
focus-exporter --provider e2b --sink costgraph
```

Your E2B credential stays where you put it, and only the finished FOCUS records
reach CostGraph. [Run the exporter](/costgraph/integrations/exporter) covers the three
ways to run it and the variables it reads.

## What CostGraph does with it

Records land as raw billing rows, are normalised into line items, and roll up into
daily cost. From there E2B spend appears in Cost Overview and in anomaly
detection alongside every other provider.

## Managed sandboxes

The same E2B account can run CostGraph code changes. See [Managed sandboxes](/costgraph/workflows/managed-sandboxes).


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