Introduction

​

Start with your goal

• Semantic Search for fast, recall-first search over the Extruct index.
• Lookalike Search when you already have a representative company domain or UUID.
• Deep Search when you need a more deliberate shortlist scored against custom criteria.
• Deep Research when you need a deep, cited report on one research target — a company, a person, or a team: account plans, lead and buyer research, diligence.
• AI Tables when you want to enrich, score, and review a company list in a reusable workflow.

​

Authentication

export EXTRUCT_API_TOKEN="YOUR_API_TOKEN"

curl --get "https://api.extruct.ai/v1/user" \
  -H "Authorization: Bearer ${EXTRUCT_API_TOKEN}"

​

Next step

• Start with Semantic Search Guide if you need to discover companies
• Or start with Deep Research if you need a cited report on a company or a person
• Or start with AI Tables Basics if you already have a company list
• Or connect Extruct MCP in your editor or agent (Cursor, VS Code, Claude, Codex, and others)
• Or use the Extruct API Skill if you want the skill’s embedded API workflows and EXTRUCT_API_TOKEN from your coding agent
• Or browse the API Reference