# CaptionCraft API

> Styled video captions, SRT subtitles, and word-level transcripts.

## Documentation

- [Overview](/): Captions that make every word count. One API, ready for your workflow.
- [Quickstart](/quickstart): Go from a video URL to a captioned video in three steps.
- [Authentication](/authentication): Use a CaptionCraft API key to authenticate server-side requests.
- [Create subtitles](/api-reference/create-subtitles): Create a captioned video and reserve prepaid seconds.
- [Get job](/api-reference/get-job): Retrieve progress, usage, and links to completed output files.
- [Cancel job](/api-reference/cancel-job): Cancel an unfinished job and release its reserved credits.
- [List presets](/api-reference/list-presets): Discover the available caption presets.
- [Get usage](/api-reference/get-usage): Check prepaid balances and available job capacity.
- [Usage and credits](/usage-and-credits): Prepaid seconds, temporary reservations, and completion-based billing.
- [Caption styles](/caption-styles): All 16 caption presets, with typography, layout, background, outline and shadow controls.
- [Job lifecycle](/job-lifecycle): Track progress, retry safely, and know when your files are ready.
- [Media requirements](/media-requirements): Prepare a source video the API can download and caption.
- [Rate limits](/rate-limits): Keep polling predictable and stay within your account's capacity.
- [Errors](/errors): Distinguish request failures from processing failures.
- [AI integrations](/ai-integrations): Connect CaptionCraft to tools, workflows, and agents.

## API contract

- [OpenAPI 3.1](/openapi.json): Endpoint schemas and examples.