# APOB Developer Guides

- [Build with APOB](https://developers.apob.ai/introduction.md): Understand APOB's creative workflows, prepare your assets, and manage generation from submission to final media.
- [Access and authentication](https://developers.apob.ai/getting-started/access-and-authentication.md): Use the correct APOB account and understand how API keys and OAuth connections grant access.
- [Models and elements](https://developers.apob.ai/concepts/models-and-elements.md): Distinguish character models, reusable reference elements, and generated media.
- [Tasks and results](https://developers.apob.ai/concepts/tasks-and-results.md): Track asynchronous generation and distinguish acceptance, completion, failure, and downloadable outputs.
- [Prepare your media](https://developers.apob.ai/guides/preparing-media.md): Choose suitable source assets, complete uploads, and check reference requirements before generation.
- [Generation workflow](https://developers.apob.ai/guides/generation-workflow.md): Plan a generation, submit it once, follow the existing task, and retrieve the finished media.
- [Credits and billing](https://developers.apob.ai/credits-and-billing.md): Understand generation credit usage, eligibility, and the effect of automatic reload before paid work.
- [Troubleshooting](https://developers.apob.ai/troubleshooting.md): Resolve access, upload, generation, and download issues without accidentally submitting paid work twice.


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