Bytemine

Bytemine is a B2B data platform built around a RESTful API. It holds over 135 million B2B contacts, over 80 million verified mobile numbers and over 10 million company profiles, and the vendor says the data is updated daily. Search works either through natural language filters or direct API calls, with filtering available on role, seniority, technology stack, headcount, location and other factors. Enrichment reveals direct dial numbers and emails and can process existing CSV files in bulk, which is often more valuable than searching from scratch. The enriched output can be pushed into AI agent tools and pipelines for sales and go-to-market automation. A LinkedIn agent scores and saves prospects, drafts responses and enriches contact details. The API responds in under 200 milliseconds and ships with documentation and code examples. New users can get 500 free points per month for one year.

- Search 135 million contacts and 10 million companies by natural language or API

- Filter targets by role, seniority, technology, headcount and location

- Reveal direct dials and emails, including bulk CSV enrichment

- Feed enriched data into AI sales and marketing pipelines

- Score and save LinkedIn prospects with the agent

- Sales teams that need reliable prospect data at volume

- Marketing teams building targeted audiences

- Developers integrating B2B data into their own products

The free allowance is 500 points per month for one year, which is a trial-scale budget rather than a permanent free tier, and paid costs scale with volume. Contact data accuracy varies by record even in large datasets, so sample and verify before you build a campaign on it. Most importantly, cold outreach using enriched phone numbers and emails has to respect consent rules and privacy law in your region, and the compliance burden sits with you. Finally, test the API and data quality against your actual use case before committing to a subscription.