> For the complete documentation index, see [llms.txt](https://docs.stammer.ai/stammer.ai-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.stammer.ai/stammer.ai-docs/account-management/agency-wallet/auto-billing.md).

# Auto Billing

For agencies and sub-accounts, Auto Billing settings live on the Billing page. Open the user menu at the bottom of the left sidebar and choose **Billing**, then use the **Billing** and **Add Ons** tabs.

## Agency Auto Billing for Wallet

Your agency's wallet is charged for each AI message sent. You set a minimum balance threshold and a recharge amount. When the wallet balance falls below the threshold, your credit card is automatically charged with the recharge amount. For example, if you set a $10 threshold and $50 recharge, your card will be charged $50 when the balance drops below $10.

<figure><img src="https://1359281993-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FkLIQnOFYHkQtdWxUzzFE%2Fuploads%2FCwuTyd8rUFpNFAfH4hhi%2FScreenshot%202024-07-01%20at%201.32.52%E2%80%AFPM.jpg?alt=media&#x26;token=6ebea722-70ce-4655-92b0-28600f28da4e" alt=""><figcaption></figcaption></figure>

## Agency Auto Billing for Characters

If an agency runs out of available characters to cover a new AI Agent's knowledge base, the system will look at the agency's auto-billing settings and reduce the agency's wallet balance accordingly for the amount of characters the agency has set. For example, when your storage balance is less than 100,000 characters, your wallet will be charged $5 and 1,000,000 characters will be added to your storage balance.

<figure><img src="https://1359281993-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FkLIQnOFYHkQtdWxUzzFE%2Fuploads%2Fnzf8wYiH9yC4ZmN7ltac%2FScreenshot%202024-07-01%20at%201.34.27%E2%80%AFPM.jpg?alt=media&#x26;token=6a73b6fc-7496-4274-8d27-da8c1791a8da" alt=""><figcaption></figcaption></figure>

## Agency Auto Billing for Extra AI Agents

Billed through Wallet. If you need more available agents you can purchase them here, or move up a Pro tier for more included agents.

<figure><img src="https://1359281993-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FkLIQnOFYHkQtdWxUzzFE%2Fuploads%2FTrtlPf5JBG9gh9m3K4yA%2FScreenshot%202024-07-01%20at%201.34.43%E2%80%AFPM.jpg?alt=media&#x26;token=c6aa164e-d4fa-4040-8586-c1a0c461c620" alt=""><figcaption></figcaption></figure>

<figure><img src="https://1359281993-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FkLIQnOFYHkQtdWxUzzFE%2Fuploads%2FVraa9Iq0fIIUGO4dX5W9%2FScreenshot%202024-07-01%20at%201.28.41%E2%80%AFPM.jpg?alt=media&#x26;token=b0a53381-6c67-466f-b0f5-b1bbdbdd28d4" alt=""><figcaption></figcaption></figure>