> ## Documentation Index
> Fetch the complete documentation index at: https://docs.extruct.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

> Browse the public Extruct API reference by endpoint group.

Reference for the public Extruct API endpoints. For workflow guidance and feature selection, start in the [Documentation](/).

## Start here

* Authentication: [Authentication](/api-reference/authentication)
* Company Search endpoints: [Company Lookup](/api-reference/company-lookup), [Search](/api-reference/search), and [Lookalike Search](/api-reference/lookalike-search)
* Deep Search endpoints: [Create Task](/api-reference/discover/create-company-discovery-task)
* Deep Research endpoints: [Create Task](/api-reference/deep-research/create-deep-research-task) for deep, cited research reports on companies and people
* Table endpoints: [Create Table](/api-reference/tables/create-table) and [Run Table](/api-reference/tables/run-table) for reusable enrichment workflows on Extruct results or your own company list

## Notes

* All endpoints use Bearer authentication.
* Endpoint pages focus on inputs, outputs, and errors, not workflow walkthroughs.