> For the complete documentation index, see [llms.txt](https://being-and-time.gitbook.io/boom-clap-melody-field-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://being-and-time.gitbook.io/boom-clap-melody-field-guide/campaign-owners/budgeting.md). # budgeting Melody uses prepaid credits and validated performance rates. ## Melody Credits One Melody Credit equals one US dollar of campaign budget. Credits can be purchased from the Workstation using the available PayPal or debit-card checkout. The campaign budget cannot exceed the account's available credit balance. When a client campaign is created, its budget is committed from the Melody Credit balance. ## How spend is calculated Campaign spend is based on validated activity: ``` spend = valid impressions × CPI + valid clicks × CPC + valid engagement sessions × CPE ``` * **CPI** is the rate for a valid impression or intermission. * **CPC** is the rate for a valid campaign click. * **CPE** is the rate for a valid engagement session, commonly involving meaningful interaction with supported embedded media. The campaign profile shows the rates assigned to that campaign. Rates can vary by account, campaign objective, inventory, category, and contextual fit. ## Budget exhaustion The campaign pauses when its budget is exhausted or when the remaining amount is no longer sufficient for continued delivery. It does not automatically resume simply because credits are later added. To resume an inactive campaign: 1. Review the remaining campaign budget. 2. Confirm that the account has enough available Melody Credits for the remaining amount. 3. Select **Resume Campaign**. The resume control is intentionally manual. This prevents a previously paused campaign from unexpectedly returning to circulation. ## Choose a practical starting budget For an initial campaign, choose a budget large enough to gather more than a handful of events but small enough to evaluate creative and contextual fit. Use the first cycle to compare impressions, engagements, clicks, origins, and daily delivery before increasing future budgets. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://being-and-time.gitbook.io/boom-clap-melody-field-guide/campaign-owners/budgeting.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.