# Developers

- [Getting Started](/developers/getting-started.md): Empower your engineering teams to build custom tooling and functionality that extends Countercyclical.
- [Authentication](/developers/authentication.md): Learn how to authenticate with Countercyclical's API.
- [Rate Limiting](/developers/rate-limiting.md)
- [Versioning](/developers/versioning.md)
- [Endpoints](/developers/endpoints.md): Find all of the endpoints available on the Countercyclical API below
- [Investments](/developers/endpoints/investments.md)
- [Valuations](/developers/endpoints/valuations.md)
- [Memos](/developers/endpoints/memos.md)
- [Teams](/developers/endpoints/teams.md)
- [Assumptions](/developers/endpoints/assumptions.md)
- [Pipelines](/developers/endpoints/pipelines.md)
- [Webhooks](/developers/webhooks.md): Subscribe to real-time events on Countercyclical with webhooks.