Bytemine

Overview

Bytemine is a B2B data platform that gives sales, marketing, and RevOps teams access to 135M+ contacts, 80M+ mobile numbers, and 10M+ company profiles. Use the no-code platform to search prospects, build ICPs, enrich CSVs, and validate emails. Developers get 7 API families with sub-200ms response times. An MCP Server feeds live contact data into AI agents like Claude and ChatGPT. A free LinkedIn Chrome extension scores warm leads using 12+ engagement signals. Pay-per-success billing means you only pay for successful lookups.

Key Features

B2B Contact & Company Database: Access verified work emails, personal emails, direct dials, and mobile numbers across 10M+ companies. Each record includes 50+ data attributes updated from 100+ aggregated sources.
Developer API Suite: Use REST APIs for contact search, enrichment, company data, web signals, and CRM automation. Built for developers and AI workflows.
MCP Server for AI Agents: Exposes 25 data tools directly to Claude, Cursor, ChatGPT, and other AI assistants. Run prospecting and account research inside your existing AI chat workflows.
LinkedIn Agent: Free Chrome extension that scores warm leads from your LinkedIn network using 12+ engagement signals. Generates context-aware reply suggestions and enriches profiles with verified contact details.
No-Code Platform Suite: Includes AI Prospect Finder, ICP Builder, CSV enrichment, email validation, Company Lookalikes, and CRM list management without writing any code.
Apps Marketplace: Built-in tools like Proposal Generator, Meeting Prep, and ROI Calculator to support your sales workflow.
Integrations: Native connections with Clay, Apollo, ZoomInfo, Instantly, Lemlist, Smartlead, and HighLevel for outbound sequences and workflow automation.

Pros

Low Barrier to Entry: Free Starter plan with 500 credits/month for 12 months, no credit card required. Paid plans start at $50/month, making it accessible for small teams and solo operators.
Unlimited Seats on Every Plan: No per-user pricing means your entire team can access the platform without extra cost, unlike competitors that charge per seat.
API-first Architecture: Clean, well-documented APIs with sub-200ms response times make it easy for developers to integrate contact data into custom tools and workflows.
AI-native Design: The MCP Server integration lets you pipe live B2B data directly into AI agents like Claude and ChatGPT, which most legacy data providers don't offer.
No Annual Lock-in: Month-to-month billing with no long-term contracts, so you can scale usage up or down as needed.
Broad Data Coverage: 80M+ mobile numbers and 155M+ US consumer records give you reach across both B2B and B2C use cases from a single platform.

Cons

Learning Curve For Non-Technical Teams: Sales or marketing users who are not familiar with enrichment tools or API-based systems may need onboarding time.
Data Coverage May Vary By Region: Although the platform offers a large global dataset, completeness and accuracy can differ depending on geography and industry segment.

Use Cases

Outbound Sales Prospecting: Sales development reps use the AI Prospect Finder to build targeted contact lists with verified emails and mobile numbers. Export directly to sequencing tools like Apollo, Instantly, or Lemlist to launch multi-channel outbound campaigns in minutes instead of days.
CRM Data Enrichment: RevOps teams upload existing CRM contacts via CSV and enrich them with fresh job titles, phone numbers, emails, and company data. This keeps your database current and improves segmentation for outreach and scoring.
AI-Powered Sales Workflows: Feed real-time B2B contact data into Claude, ChatGPT, or other AI agents through the MCP Server. Build intelligent automations that research accounts, draft personalized outreach, and prep for meetings using live data rather than stale context.
Account-Based Marketing (ABM): Marketing teams filter by job title, company size, revenue, and industry to build precise target account lists. Use Company Lookalikes to find new accounts that match your best customers.
SaaS Platform Integration: Product teams integrate Bytemine's APIs to power contact search, enrichment, and validation features inside their own applications. UpTics, for example, uses the API as their core contact enrichment engine.
LinkedIn Warm Outreach: Sales reps use the free LinkedIn Agent extension to identify which connections are most likely to engage, get context-aware reply suggestions, and pull verified contact details without leaving LinkedIn.

Frequently Asked Questions

What is Bytemine?

Bytemine is a B2B data platform that provides access to 135M+ contacts, 80M+ mobile numbers, and 10M+ company profiles. It offers both a no-code platform for sales teams and a developer API suite for building custom integrations and powering AI agent workflows.

How much does Bytemine cost?

Bytemine offers a free Starter plan with 500 credits/month for 12 months. Paid plans start at $50/month for 1,000 credits, with a Pro plan at $250/month for 7,500 credits. Enterprise plans with unlimited credits are available at custom pricing. All plans include unlimited seats and no annual commitment.

How does Bytemine compare to ZoomInfo or Apollo?

Bytemine positions itself as a lower-cost alternative with comparable data coverage. Key differences include unlimited seats on every plan, pay-per-success billing, and native AI agent integration via MCP Server. However, ZoomInfo and Apollo have significantly more independent reviews and longer market track records.

What integrations does Bytemine support?

Bytemine integrates natively with Clay, Apollo, ZoomInfo, Instantly, Lemlist, Smartlead, and HighLevel. It also offers an MCP Server for AI agent platforms like Claude and ChatGPT, plus a full REST API suite for custom integrations.

What is the MCP Server?

The MCP (Model Context Protocol) Server exposes 25 Bytemine data tools directly to AI assistants like Claude, Cursor, and ChatGPT. This lets you run prospect searches, enrich contacts, and research accounts inside your AI chat workflows without switching tools.