# Introduction import {Head, Link} from "zudoku/components"; Introduction | Chief Tools developers Build integrations with Chief Tools APIs and supported protocols. Start with the shared authentication documentation, then choose the product your application needs to work with. If you want help using a Chief Tools product in the browser, go to the [product documentation](/introduction) instead. ## Start here
Authentication and tokens

Choose between personal access tokens, team access tokens, and OAuth access tokens.

How scopes work

Limit a token to the Chief Tools products and operations an integration needs.

## Choose a product
OAuth 2.0 and OpenID Connect
Account Chief

Authenticate users and work with their profile, email address, and teams.

REST API
Domain Chief

Manage domains, contacts, DNS records, redirects, registrations, and transfers.

GraphQL API
Cert Chief

Query domains, monitors, certificate checks, and TLS server tests.

GraphQL API
Deploy Chief

Work with applications, servers, environments, and deployments.

GraphQL API
Tny

Manage shortened links, custom domains, and URL utilities.