Best company database APIs

The best company database API, ranked by price per company.

These catalog providers return lists of companies that match your filters through looot. Ranked by live price per company returned.

Give this to your agent
set up looot for Best company database API - https://looot.ai/best/company-database-api/skill.md

The short answer

The short answer

The best company database API is the one whose filters match how you describe your market: industry and headcount, technologies, a plain-language prompt or lookalikes of your customers. This page ranks the looot catalog providers by live price per company returned, so a list of 1,000 accounts costs what the ranking shows.

Updated

The ranking

10 providers, one job

Companies that match industry, size, location or tech filters. Bars show price per company, to scale.

How we rank

What the ranking is built on

  • Every provider here has a company search endpoint in the looot catalog, billed per company returned.
  • We rank by the price per company of that endpoint, read live from the catalog. A cheaper company ranks higher.
  • Search endpoints billed per call are left out, because a call can return one company or a hundred, so the units do not compare.
  • Search endpoints with no looot price are left out, because a zero price says nothing about the data.
  • The catalog does not publish a measured success rate for these endpoints, so this page does not rank by one and quotes none.
  • Providers outside the looot catalog are not ranked.

Cheapest company database API per 1,000 companies

The ranking shows each provider's live price per company and per 1,000 companies. That is the cost of a target account list of that size, before any contact lookup.

Some endpoints charge a minimum per call even when the page is short. Ask for full pages when you compare.

Build a company list, step by step

Company search API or company data by domain

A company search API answers "which companies match". You send filters and get a list back. Company enrichment answers "tell me about this company". You send one domain and get one record.

If you already have the domains, the B2B data API list ranks company enrichment by price per call.

Best B2B data API, for enrichment by domain

Every company data job in one place

Search, enrichment, technographics, funding and news are separate jobs with separate endpoints. The company data hub groups them by job, with live prices.

Company data API for AI agents

The prompt

Let your agent pick the cheapest.

Paste the prompt. The agent finds the company search endpoints, checks each price and runs the cheapest one that fits.

  • One run is one company.
  • Runs on demand, whenever you ask.
  • Checking on a timer needs scheduled runs, not available yet.
Prompt: Best company database API
Use looot to build a list of 200 B2B software companies in Germany with 50 to 500 employees: use the cheapest company search endpoint billed per company, return name, domain, industry, headcount and city in a table, and tell me the cost before you fetch more than the first page. 1. Set up https://looot.ai/skill.md. 2. Search the catalog for each step and check its price before you call. 3. Run the cheapest endpoint that fits. 4. Show the results as a table and the total cost.

Give this to your agent
Setup command
set up looot for Best company database API - https://looot.ai/best/company-database-api/skill.md

FAQ

Questions people ask

The one whose filters match how you describe your market. This page ranks the looot catalog providers by live price per company returned. Pick TheirStack for tech and hiring filters, AI Ark for lookalikes, or the cheapest for a plain industry and size list.

The first row of the ranking above, read live from the catalog. Prices can change, so the page reads them on each refresh and shows no number when the catalog is unreachable.

An endpoint that takes filters such as industry, headcount, location, revenue or technologies and returns the companies that match, usually with name, domain and size. It is how agents build a target account list.

A B2B data API in our other list enriches one company you already know, from its domain. A company database API finds companies you do not know yet, from filters. Most lead lists use search first, then enrichment.

This page ranks priced endpoints. A few company search endpoints in the catalog carry no looot price, and they are not ranked here because a zero price says nothing about the data.

ZoomInfo is not in the looot catalog, so this page does not rank it. The providers above return company lists from filters, and your agent can call any of them with one key.

Yes. TheirStack filters by technology stack and hiring signals, and Lusha takes technologies as a filter. For the tech stack of companies you already have, use a technographics endpoint instead.

Yes. AI Ark runs a lookalike search from a few domains or LinkedIn company URLs. CompanyEnrich and TheCompaniesAPI also have lookalike or similar-company endpoints, shown as extras.

Run a people search on the companies, then an email finder on the people. AI Ark returns a company id its people search takes, so the match is exact.

Paste the prompt on this page into your agent. It sets up looot, finds the company search endpoints, checks the price per company and runs the cheapest one that takes your filters.

Re-running the same search by hand and keeping the new rows works today. Doing it on a timer needs scheduled runs, not available yet.

The catalog does not publish a measured success rate for these endpoints. A search either matches companies or not, so run one page with your filters and check the rows.
For agents
list
Best company database API
job
Companies that match industry, size, location or tech filters
ranked by
live price per company from the looot catalog
provider
anysite
provider
icypeas
provider
ai-ark
provider
dropleads
provider
limadata
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thecompaniesapi
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lusha
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companyenrich
provider
theirstack
provider
people-data-labs
setup
https://looot.ai/best/company-database-api/skill.md
llms.txt
https://looot.ai/llms.txt
updated
2026-11-03

Call any company database API through one key.

Start your workspace, top up, and paste the prompt into the agent you already use.