# Retreaver Core API > RESTful, paginated API for automating your Retreaver account: routing calls, managing campaigns, exporting call logs, and most things you can do in the account portal. Every page below is also available as raw Markdown by appending `.md` to its URL. Please use API responsibly and always respect concurrency limits. ## API Reference - [Introduction to API](https://learn.retreaver.com/api/introduction.md): Start here to learn how to use Retreaver's API. - [Calls API](https://learn.retreaver.com/api/calls.md): Access phone call data using Retreaver's API - [API Authentication](https://learn.retreaver.com/api/authentication.md): How to authenticate with Retreaver's API - [Real-Time Bidding (RTB) API](https://learn.retreaver.com/api/real-time-bidding-rtb.md): Retreaver's Real Time Bidding (RTB) API - [Affiliates API](https://learn.retreaver.com/api/affiliates.md): Manage Affiliates (aka Buyers or Call Endpoints) using Retreaver's API - [API Error Codes](https://learn.retreaver.com/api/errors.md): Retreaver API Error Codes - [Deprecated APIs](https://learn.retreaver.com/api/deprecated.md): Here is a list of API URLs that have been deprecated or migrated to new APIs. - [Campaigns API](https://learn.retreaver.com/api/campaigns.md): Manage your Retreaver Campaigns via API - [Call Reports API](https://learn.retreaver.com/api/reports.md): Access call reporting data via API. - [Target Groups API](https://learn.retreaver.com/api/target-groups.md): Manage Target Groups (aka Buyer Groups or Handler Groups) using Retreaver's API - [Numbers API](https://learn.retreaver.com/api/numbers.md): Manage your Retreaver phone numbers using our API. - [Number Pools API](https://learn.retreaver.com/api/number-pools.md): Manage number pools using Retreaver's API - [Companies API](https://learn.retreaver.com/api/companies.md): Manage multiple companies using Retreaver APIs - [Caller Lists API](https://learn.retreaver.com/api/caller-lists.md): Manage Caller Lists via API to suppress numbers or build a book of business. - [Targets API](https://learn.retreaver.com/api/targets.md): Manage Targets (aka Buyers or Call Endpoints) via Retreaver's API. - [Suppressed Numbers API](https://learn.retreaver.com/api/suppressed-numbers.md): Manage suppressed numbers using Retreaver's API - [Static Caller Numbers API](https://learn.retreaver.com/api/static-caller-numbers.md): Manage static caller numbers using Retreaver's API. - [Contacts API](https://learn.retreaver.com/api/contacts.md): Use an API to tie Calls to Contact Numbers - [Contact Numbers API](https://learn.retreaver.com/api/contact-numbers.md): A convenience API for removing and updating Contact Numbers. ## More - [All Retreaver docs](https://learn.retreaver.com/llms.txt): Site-wide index covering support guides, interactive demos, API reference, and news.