What platforms does Extruct AI support?

Extruct AI is available on Web App and Browser extension.

What are the limitations of Extruct AI?

Deep Search is slow by design; the sample run took around five minutes for one list. The fixed index is finite, so niche criteria often depend on live web research and its variable quality. Pricing is not stated on the homepage, so cost per lookup or credit has to be checked on the pricing page.

Extruct AI

Name: Extruct AI
Author: Extruct AI

Company research API with cited sources for every answer

Intermediate API

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Screenshot of Extruct AI, Company research API with cited sources for every answer

What is Extruct AI?

Extruct AI is a company research API that finds and profiles companies from a 10M-company index or the live web, returning cited sources. It supports domain lookup, semantic and lookalike search, plus agent-run Deep Search that grades candidates against your own criteria.

Extruct AI is a company research API built for software and AI agents that need reliable company data. It combines a curated index of roughly 10 million companies with live web research, so a query can resolve against structured profiles or against whatever exists on the open web. Each answer is returned with the sources it was drawn from, which matters when the output feeds a sales pipeline, an investment memo or an agent that cannot verify facts on its own. The product covers three lookup modes. Domain lookup returns a full company profile (description, products, use cases, target audience, founding year, headcount band, headquarters, social profiles and source list). Semantic search accepts a plain description such as "unified HR, IT and payroll platforms" and returns matching companies. Lookalike search starts from one company and finds peers. A fourth mode, Deep Search, targets lists that no database already contains: you write a thesis with several criteria, agents research the live web, and every candidate is graded against each criterion with named evidence, for example a project reference, a team page or a job posting. Sales teams are the clearest fit. The homepage case study shows an innovation analyst at True Capital describing a workflow where a written request builds a list, researches it and pushes results into Affinity CRM. Extruct also ships as an MCP server for Claude Code, Codex and Cursor, as a plain HTTP API, as a Studio interface, and as a Chrome extension that looks up a company and its lookalikes from the page you are on. That puts it alongside traditional firmographic data providers and enrichment tools, with the distinction that Extruct reaches beyond a fixed database and shows its evidence. The practical tradeoff is that live web research takes time: the demo list took about five minutes to grade over two thousand sourced candidates. Teams that need instant enrichment on millions of rows may still prefer static data vendors, while teams chasing narrow, hard-to-express criteria will get more from the graded Deep Search output.

How do you use Extruct AI?

1Create an account and get an API key
Sign up from the homepage call to action. No card is needed to start, and the key issued here works across the API, MCP and Studio.
2Try a domain lookup
Call the companies endpoint with a domain such as rippling.com to see the returned profile shape: descriptions, products, use cases, headcount, headquarters and sources.
3Run a semantic or lookalike search
If you can describe the target, send a phrase like unified HR, IT and payroll platforms. If you have a similar company, use lookalike search from that domain instead.
4Build a graded list with Deep Search
Write a thesis with explicit criteria (size, vertical, recent projects, capabilities, hiring signals), then let the agents source and grade every candidate against each one.
5Connect your agent over MCP
Register the HTTP MCP endpoint in Claude Code, Codex or Cursor so the agent can build and research lists directly from a prompt.
6Look up companies without code
Install the Chrome extension to research any company and find its lookalikes from the page you are already viewing.

Pros and cons

Pros

Every result ships with its sources, so claims can be checked rather than trustedAI
Deep Search grades candidates criterion by criterion, surfacing evidence such as project references or job postingsAI
Multiple entry points: HTTP API, MCP server for coding agents, no-code Chrome extension and the Studio UIAI
Profile fields cover practical sales needs: headcount band, headquarters, products, use cases and social profilesAI
No card required to start, with usage-based payment once volume scalesAI

Cons

Deep Search is slow by design; the sample run took around five minutes for one listAI
The fixed index is finite, so niche criteria often depend on live web research and its variable qualityAI
Pricing is not stated on the homepage, so cost per lookup or credit has to be checked on the pricing pageAI
No native CRM connector is documented; the Affinity example implies push workflows are built separatelyAI
English-language web presence is the implied basis for research, which can bias results for non-US companiesAI

How much does Extruct AI cost?

Free trial

The homepage states that no card is required to start, and sign-up from the product flow issues an API key. It does not describe a time-limited trial, so the free allowance is best confirmed on the pricing page.

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Integrations

Documented routes are the HTTP API, an MCP server for Claude Code, Codex and Cursor, and a Chrome extension. A customer story mentions results landing in Affinity CRM, though no native CRM connector is described on the homepage.

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Features

Company lookup by domain with structured profiles and cited sources; semantic search by description; lookalike search from a seed company; Deep Search where agents research the live web and grade candidates against your criteria with evidence per criterion; cell enrichment; and access through HTTP API, MCP server, Studio and a Chrome extension.

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Frequently asked questions about Extruct AI

Does Extruct AI offer a free trial?
The homepage states that no card is required to start, and sign-up from the product flow issues an API key. It does not describe a time-limited trial, so the free allowance is best confirmed on the pricing page.
Does Extruct AI have an API?
Yes, Extruct AI offers an API.
How do you use Extruct AI?
The walkthrough on this page covers 6 steps: 1. Create an account and get an API key 2. Try a domain lookup 3. Run a semantic or lookalike search 4. Build a graded list with Deep Search 5. Connect your agent over MCP 6. Look up companies without code.
What platforms does Extruct AI support?
Extruct AI is available on Web App and Browser extension.
What does Extruct AI integrate with?
Documented routes are the HTTP API, an MCP server for Claude Code, Codex and Cursor, and a Chrome extension. A customer story mentions results landing in Affinity CRM, though no native CRM connector is described on the homepage.
What are the limitations of Extruct AI?
Deep Search is slow by design; the sample run took around five minutes for one list. The fixed index is finite, so niche criteria often depend on live web research and its variable quality. Pricing is not stated on the homepage, so cost per lookup or credit has to be checked on the pricing page.