Best B2B data APIs

The best B2B data API, ranked by live price.

These providers enrich a company through looot, billed per call. Ranked by price per call, read live from the catalog.

Give this to your agent

set up looot for Best B2B data API - https://looot.ai/best/b2b-data-api/skill.md

The Companies API
Hunter
Tomba
CompanyEnrich
PredictLeads
Datagma
LeadMagic
Prospeo
Coresignal

The short answer

The best B2B data API depends on what you start from. From a domain, the cheapest price per call wins, and this page ranks the looot catalog providers by that live price. From an email, a name or a social profile, pick the provider whose endpoint takes it. Your agent calls any of them with one key.

Cheapest today

The Companies API

$0.0019

Per call for enrich a company from its domain or name, read live from the catalog.

The ranking

9 providers, one job

Enrich a company from its domain or name. Bars show price per call, to scale.

Sort by

01
The Companies API
Its endpoints take an email, a company name or a social profile such as LinkedIn or GitHub. The email lookup returns the company behind the address's domain, with name, industry, employees and locations. The name lookup returns every company whose name matches, so check the match.
- 12 endpoints
- Company search
- Similar companies
- Email pattern
$0.0019 / call
02
Hunter
Takes a domain. Returns the company name, description, industry category, company type, founded year, location, email provider, funding rounds and social profiles. The catalog description lists no headcount.
- 8 endpoints
- Email finder
- Domain search
- Email verifier
$0.0049 / call
03
Tomba
Takes a domain. Returns the company name, legal name, industry codes, founded year, location, the phone numbers and email addresses listed on its site, and its social profiles.
- 20 endpoints
- Technographics
- Email finder
- Phone finder
$0.0089 / call
04
CompanyEnrich
Has one endpoint by domain and one by properties such as name, LinkedIn URL or other social URLs. The domain lookup returns a 404 when the company is not stored yet, then schedules the enrichment for a later call.
- 38 endpoints
- Lookalike companies
- Company search
- People search
$0.0098 / call
05
PredictLeads
Takes a domain or its own company id. The basic endpoint returns only the company name, domain, description and language. An extended endpoint returns more firmographic fields.
- 28 endpoints
- Technographics
- Funding
- Company news
- Job postings search
$0.0100 / call
06
LeadMagic
Takes a domain, a company name or a LinkedIn URL. Returns the description, industry, employee count and range, headquarters, competitors and growth figures. The charge follows the credits it consumes, which is zero when nothing is found.
- 8 endpoints
- Email finder
- Phone finder
- People search
$0.0198 / call
07
Datagma
Takes a domain or a company LinkedIn URL. Returns the name, industry, size, location, technologies, employees and a premium firmographics block.
- 13 endpoints
- Funding
- Tech stack
- Job changes
$0.03266 / call
08
Prospeo
Takes a website, a name or a LinkedIn URL. Returns the name, domain, industry, employee count and range, founded year, location, keywords, technologies and headquarters phone.
- 7 endpoints
- Company search
- People search
- Person enrichment
$0.0390 / call
09
Coresignal
Takes a website only. Returns a deduplicated company record, and a second endpoint returns a record merged from several sources.
- 26 endpoints
- Company search
- People search
- Job postings search
$0.1960 / call

Choosing one

Pick by what you need

If you needYou have an email address, a company name or a social profile, not a domainPick The Companies API
If you needDomain in, funding rounds and social profiles outPick Hunter
If you needIndustry codes plus the phone numbers and emails on the company sitePick Tomba
If you needLookup by name or LinkedIn URL, and lookalike companiesPick CompanyEnrich
If you needCompany data next to news, funding and job postingsPick PredictLeads

How we rank

What the ranking is built on

Every provider here has a company enrichment endpoint in the looot catalog that is billed per call.
We rank by the cheapest per-call price among a provider's company enrichment endpoints, read live from the catalog. A cheaper call ranks higher.
Some providers bill company enrichment per result, not per call. They are in the catalog and are not ranked on this page, because a result and a call are different units.
The catalog does not publish a measured success rate for these endpoints, so this page does not rank by one and quotes none.
Extras are other capabilities the provider has in the catalog. More extras does not mean better data.
Providers outside the looot catalog are not ranked.

The prompt

Let your agent pick the cheapest.

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

One run is one call.
Runs on demand, whenever you ask.
Checking on a timer needs scheduled runs, not available yet.

Prompt: Best B2B data API

Use looot to enrich the company domains in my list: for each domain call the cheapest company enrichment endpoint that takes a domain, show name, industry, size and location in a table, and tell me the total cost. 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 B2B data API - https://looot.ai/best/b2b-data-api/skill.md

FAQ

Questions people ask

It depends on what you start from and what you need back. This page ranks the looot catalog providers by live price per call for company enrichment. Pick the cheapest for bulk lookups from a domain, or the provider whose endpoint takes your input and returns your fields.

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.

A service your code or agent calls to get facts about companies, such as name, industry, size, location, funding and social profiles, as structured data. The fields depend on the provider.

This page ranks priced endpoints, so it lists no free one. One catalog note worth knowing is that CompanyEnrich's lookup by domain returns a 404 without a charge when the company is not stored yet.

ZoomInfo is not in the looot catalog, so this page does not rank it. The providers above enrich a company from a domain, a name or a social profile, and your agent can call any of them with one key.

Each B2B data provider here keeps its own company database, and the catalog names the provider on every endpoint. Coresignal also has an endpoint that returns a record merged from several sources. Compare the fields in the ranking, then run one lookup on your own list to see the data.

Company enrichment returns company facts, not an email list. Hunter, Tomba and LeadMagic also have an email finder endpoint, shown as extras in the ranking. Tomba's company endpoint also returns the email addresses listed on the company's own site.

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

It depends on the endpoint. Hunter and Tomba take a domain. TheCompaniesAPI takes an email, a name or a social profile. LeadMagic and Prospeo take a domain or name, and LinkedIn URLs work with several of them. Check the endpoint's inputs in the catalog first.

Re-running a lookup by hand works today. Refreshing on a timer needs scheduled runs, not available yet.

A per-result price and a per-call price are different units, so ranking them in one list would mislead. Those providers are in the catalog, and the catalog shows the price of each endpoint before you run it.

The catalog does not publish a measured success rate for these endpoints. We would rather rank by a number we can read than quote one we cannot.

Keep going

Use case
Company enrichment API
Send a company domain. Read company name and description back. Your agent picks the provider, and you pay per call.
Use case
Data enrichment
Give your agent the list and the fields. It fills the gaps from many providers behind one key, billed per call.
Recipe
Enrich a company list
Adds headcount, industry, HQ country and website to every domain in a list, using the cheapest provider that answers.
Recipe
Find CEO emails for fintechs
Finds the CEO of each fintech, looks up a work email and drops any address that fails verification.
Best list
Best LinkedIn API
The best LinkedIn API for your agent: providers that return a public profile from a profile URL, ranked by live price per call from the looot catalog.
Best list
Best SERP API
The best SERP API for your agent, ranked by live price per call from the looot catalog, with what each provider returns beyond organic results.
Best list
Best news API
The best news API for your agent: providers that return news articles for a keyword, ranked by live price per call from the looot catalog.
Best list
Best TikTok API
The best TikTok API for your agent: providers that return a creator's public profile, ranked by live price per call from the looot catalog.
Best list
Best Reddit API
The best Reddit API for your agent: providers that return the posts of a subreddit, ranked by live price per call from the looot catalog.