> AI agents: this is one page from PostHog's docs. Full index of Markdown docs for LLMs: https://posthog.com/llms.txt

# Linking Modal as a source

**Alpha release**

This source is currently in **alpha**. The interface and available tables may change.

![](https://res.cloudinary.com/dmukukwp6/image/upload/texture_tan_9608fcca70)

![](https://res.cloudinary.com/dmukukwp6/image/upload/texture_tan_dark_a92b0e022d)

Let AI connect your sources for you

Skip the manual setup — run this in your project and the wizard auto-detects your databases and APIs and connects them to PostHog.

`npx @posthog/wizard warehouse`

![PostHog Wizard hedgehog](https://res.cloudinary.com/dmukukwp6/image/upload/wizard_3f8bb7a240.png)

![](https://res.cloudinary.com/dmukukwp6/image/upload/wizard_3f8bb7a240.png)Let AI connect your sources for you

The Modal connector syncs your workspace billing data from [Modal](https://modal.com/) – daily and hourly cost breakdowns by object and environment – into PostHog, so you can analyze your serverless compute spend alongside your product data.

## Prerequisites

You need a Modal account with a **Team or Enterprise plan**. Workspace billing reports are only available on these plans. Free and individual plans don't have access to the billing API.

Generate an API token in [Modal settings](https://modal.com/settings). Use a service-user token with workspace billing access.

## Adding a data source

1.  In PostHog, go to the [Sources tab](https://app.posthog.com/data-management/sources) of the data pipeline section.
2.  Click **\+ New source** and click **Link** next to this source.
3.  Enter your credentials (see [Configuration](#configuration) below) and click **Next**.
4.  Select the tables you want to sync, choose a sync method and frequency, then click **Import**.

Once the syncs are complete, you can start querying this data in PostHog.

When linking Modal, you need:

-   **Token ID** – the token ID generated in Modal settings (starts with `ak-`).
-   **Token secret** – the token secret shown once when the token is created (starts with `as-`).

## Sync modes

Each table can be synced in one of several modes, depending on what the source supports:

-   **Webhook** (when available) – the source pushes changes to PostHog in real time. Fastest freshness, lowest ongoing cost, and the only mode that reliably captures updates and deletes.
-   **Incremental** – only new or updated rows are synced on each run, using a cursor field (such as an `updated_at` timestamp). Cheaper than a full refresh, but deletes aren't captured.
-   **Append only** – new rows are appended using a cursor field; existing rows are never updated. Ideal for immutable, append-only tables like event logs.
-   **Full refresh** – the whole table is reloaded on every sync. Use it when a table has no reliable cursor or when you need deletions reflected.

See [sync methods](/docs/cdp/sources.md#sync-methods) for a full explanation of how each mode works and how to choose between them.

Both billing tables support incremental sync on `interval_start`. Modal continuously updates cost data for recent intervals, so each incremental run re-pulls a trailing window and updates restated rows in place:

-   **`billing_report_daily`** – 3-day lookback window
-   **`billing_report_hourly`** – 6-hour lookback window

The first sync imports historical data:

-   **Daily reports** – 365 days of history
-   **Hourly reports** – 30 days of history

## Configuration

| Option | Type | Required |
| --- | --- | --- |
| `Token ID` | text | Yes |
| `Token secret` | password | Yes |

## Supported tables

| Table | Description | Sync method | Incremental field | Primary key |
| --- | --- | --- | --- | --- |
| `billing_report_daily` | Daily workspace costs by Modal object and environment. | Incremental, Full refresh | interval\_start | — |
| `billing_report_hourly` | Hourly workspace costs by Modal object and environment. | Incremental, Full refresh | interval\_start | — |

| Table | Description | Sync |
| --- | --- | --- |
| `billing_report_daily` | Daily workspace costs by Modal object and environment | Incremental |
| `billing_report_hourly` | Hourly workspace costs by Modal object and environment | Incremental |

Each table includes these columns:

| Column | Description |
| --- | --- |
| `object_id` | Identifier of the Modal object that incurred the cost, such as an App |
| `description` | Description of the Modal object that incurred the cost |
| `environment_name` | Name of the Modal environment that contains the object |
| `interval_start` | Start of the billing interval in UTC |
| `cost` | Cost for the billing interval before credits, reservations, and the network egress allowance |
| `tags` | User-defined tags associated with the object during the billing interval |

The primary key is (`object_id`, `interval_start`, `environment_name`).

## Troubleshooting

### Permission denied error

Modal returns a permission error if your account doesn't have access to workspace billing reports. This feature requires a **Team or Enterprise plan**. Check your Modal subscription in [Modal settings](https://modal.com/settings).

### Authentication error

If syncs fail with an authentication error, verify your token credentials:

1.  Check that your Token ID starts with `ak-` and your Token secret starts with `as-`.
2.  Confirm the token hasn't been revoked in [Modal settings](https://modal.com/settings).
3.  Generate a new token if needed.

If your sync is failing or data looks wrong, see the [Data warehouse troubleshooting guide](/docs/data-warehouse/troubleshooting.md). If that doesn't help, [contact support](https://us.posthog.com/#panel=support%3Asupport%3Adata_warehouse%3A%3Atrue) – we're happy to help.

### Still have questions?

Ask PostHog AI

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