# Introduction

> The external Refabric API: tasks, jobs and files.

Base URL: `https://api.refabric.com/v1`

## Hubs

- [Platform API for Tasks](https://docs.refabric.com/api-reference/platform/tasks): Find a task, price it, run it, and read what you spent.
- [Platform API for Jobs](https://docs.refabric.com/api-reference/platform/jobs): Follow a job you started, read its result, or cancel it.
- [Platform API for Files](https://docs.refabric.com/api-reference/platform/files): Give a file an address a task takes, read it, or delete it. Discover what a task's input may reference: the same item shape for every kind, and the address it returns is exactly the string a task accepts.
- [Platform API for Reference data](https://docs.refabric.com/api-reference/platform/reference-data): The vocabularies, concepts, recipes and error codes the other operations use.
- [Platform API for Webhooks](https://docs.refabric.com/api-reference/platform/webhooks): What a webhook receiver needs to verify a delivery.
- [Platform API for Account](https://docs.refabric.com/api-reference/platform/account): Your balance and the request-rate limits that apply to you.
- [Platform metadata](https://docs.refabric.com/api-reference/platform/platform): Facts about the service itself: its limits and whether it is up.