> For the complete documentation index, see [llms.txt](https://developers.pipelinersales.com/api-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers.pipelinersales.com/api-docs/core-api-concepts.md).

# Core API Concepts

- [Understanding the CRM Concept](https://developers.pipelinersales.com/api-docs/core-api-concepts/understanding-the-crm-concept.md)
- [Fields](https://developers.pipelinersales.com/api-docs/core-api-concepts/fields.md)
- [API parameters](https://developers.pipelinersales.com/api-docs/core-api-concepts/api-parameters.md)
- [Dates](https://developers.pipelinersales.com/api-docs/core-api-concepts/dates.md)
- [Pagination](https://developers.pipelinersales.com/api-docs/core-api-concepts/pagination.md)
- [Bulk Create, Update, Delete](https://developers.pipelinersales.com/api-docs/core-api-concepts/bulk-create-update-delete.md)
- [Webhooks(Real-time updates)](https://developers.pipelinersales.com/api-docs/core-api-concepts/webhooks-real-time-updates.md)