Bytemine

What is Bytemine?

Bytemine is a B2B contact and company data platform that returns emails, mobile numbers and firmographic details for sales prospecting and enrichment. It is built for sales, RevOps and growth teams, and increasingly for developers who connect AI agents to live contact data.

Its official site describes three ways to work. The Platform Suite offers no-code tools such as Contact Lookup, List Builder, CSV Enricher and an AI Prospect Finder. The Developer Suite exposes REST APIs and an MCP server, and a LinkedIn Agent automates profile visits, connection requests and messages. An agent storefront also lets AI agents buy data directly, with or without human approval.

Watch the domain. The bytemine.io address redirects to Level2, a no-code trading platform run by Bytemine Technologies Ltd, which is unrelated to this prospecting tool. The B2B product lives at bytemine.ai, and There’s An AI For That added its listing in June 2026. Because Bytemine stores personal data about professionals, buyers in the UK and EU should check GDPR duties before using it.

Key Features

API access to 135 million contacts drives Bytemine’s feature set, letting teams pull verified emails and mobile numbers straight into code, spreadsheets or AI agents.

• Contact and company search: You can search people and companies by role, industry, size and location. The official site claims 135 million contacts and 10 million companies, and a count query is free before you spend credits.
• Enrichment and email finding: Upload a CSV or call the API to add emails, mobile numbers and company details to existing records. Bytemine says enrichment bills only on a successful match, so failed lookups should not cost credits.
• Signals and intent: Signal endpoints flag hiring, funding, job postings and job changes at target accounts. A Buying Intent Score and technographics data help reps decide which accounts to contact first.
• MCP server and REST APIs: The Developer Suite groups its services into eight API families. An MCP server lets Claude, ChatGPT and Cursor query Bytemine data directly inside an assistant or coding tool.
• Agent storefront: AI agents can read a public catalogue, see prices and buy data without a standard sign-up. Buyers can require human approval, which adds a useful control for automated purchasing.
• LinkedIn Agent: This agent automates profile visits, connection requests and personalised messages, then syncs activity to a CRM. Check LinkedIn’s user agreement first, since automated activity can put accounts at risk.

Pros

Developer-first access is why technical GTM teams pick Bytemine, since REST endpoints, an MCP server and per-match billing suit automated enrichment pipelines.

• Built for automation: REST APIs, an OpenAPI schema and an MCP server make Bytemine easy to wire into scripts and AI agents. Engineering-led sales teams gain data without manual exports.
• Pay for matches: The official catalogue says enrichment bills only on a successful match and count queries are free. That makes budgeting more predictable than tools charging for every attempt.
• Free starting credits: The Starter plan provides 500 credits a month for 12 months at no cost. Small teams can test data quality on their own target list before paying.
• Large mobile coverage: Bytemine claims more than 80 million mobile numbers, a strong figure for phone-led outbound. Directories describe this coverage as mainly US-focused, which suits North American sellers.
• Wide tool support: Its llms.txt names Clay, Apollo, Smartlead, Lemlist and several email verifiers. Teams can slot Bytemine into an existing stack instead of replacing their outreach tools.

Cons

Data protection is the main concern with Bytemine, because its privacy policy did not render for us and public material says little about GDPR or opt-outs.

• Thin compliance detail: We found no clear GDPR, CCPA or SOC 2 statement in the pages we could read. EU and UK teams should request data sources, lawful basis and opt-out handling in writing.
• Mostly US coverage: Competitor reviews describe thinner coverage in EMEA, APAC and Latin America. Teams prospecting outside North America should test match rates on a sample list first.
• Conflicting price reports: The official site lists Pro at $250 a month, while some directories and a reviewer mention a $50 self-serve tier. Confirm the current plan before planning a budget.
• Verification gaps reported: A rival vendor’s review notes weaker results on catch-all email domains and smaller firms. Run returned emails through a verifier before large sends to protect deliverability.
• Young product: The B2B product appeared on major directories only in 2026, so independent reviews are few. Long-term reliability and support quality are harder to judge than for older providers.

Who is Using Bytemine?

Sales development and RevOps teams are Bytemine’s main audience, alongside engineers building AI agents that need live contact data.

• SDR and sales teams: Reps build lead lists and find direct dials for outbound calls. They use free count queries to size a market before spending credits.
• RevOps teams: Operations staff enrich CRM records in bulk with the CSV Enricher. They also refresh contacts whose job change signals show a move.
• AI agent builders: Developers connect the MCP server or REST APIs to research and prospecting agents. The agent storefront lets those agents buy data on demand.
• Recruiters and agencies: Recruiters look up candidate contact details, and agencies enrich client lists. Both should check consent and data protection rules for each region.

Pricing

Bytemine has a free Starter plan with 500 credits a month and a Pro plan at $250 a month (official llms.txt file, October 2026).

Prospeo and a reviewer on There’s An AI For That cite a $50 monthly plan for 1,000 credits, which we could not find on the official site. Agent storefront purchases bill per record returned rather than by subscription.

Disclaimer: credit allowances and promotions on data platforms change often, so ask Bytemine for a written quote covering your expected volume.

What Makes Bytemine Unique?

An agent storefront sets Bytemine apart from most contact databases. AI agents can read its catalogue, see prices and pay for records directly, with optional human approval, while most rivals still expect a person to log in and export lists.

Breadth of endpoints is the second difference. Beyond contacts and emails, the catalogue includes company lookalikes, technographics, buying intent, bot and fraud detection, meeting briefs and a proposal generator, all reachable through the same API and MCP server.

Compatibilities and Integrations

Bytemine connects mainly through code, with REST APIs, an OpenAPI schema and an MCP server for Claude, ChatGPT and Cursor.

• Web platform: No-code tools cover contact lookup, list building, CSV enrichment and email validation.
• Developer access: REST APIs, an OpenAPI schema and LangChain support suit custom pipelines and agents.
• AI assistants: The MCP server lets Claude, ChatGPT and Cursor query contact and company data directly.
• Sales tools: The official llms.txt names Clay, Apollo, ZoomInfo, Smartlead and Lemlist.
• Email verifiers: MillionVerifier, NeverBounce and ZeroBounce are listed for checking addresses before sending.

Bytemine Tutorials

A first Bytemine enrichment run takes six steps, starting with a free count query that costs no credits.

1. Sign up for the free Starter plan at bytemine.ai and note your monthly credit balance.
2. Define your ideal customer profile by industry, company size, role and region.
3. Run a count query to see how many matching records exist before spending credits.
4. Upload a small CSV sample to the CSV Enricher and compare results with known contacts.
5. Verify returned emails and record the lawful basis and opt-out route for your region.
6. Connect the API or MCP server once match rates meet your quality threshold.

How We Rated It

Bytemine scores 3.8 out of 5, rewarded for developer-friendly access and match-based billing but marked down for unclear compliance documentation.

Summary

Bytemine suits technical sales teams and AI agent builders who want contact data through an API rather than a traditional seat-based database. Its main limitation is thin public detail on data sources and GDPR handling, which matters for anyone contacting people in the UK or EU. Coverage also appears strongest in the United States. The free Starter credits make a low-risk trial possible. Test 100 records from your own target list, verify the emails, and ask for the vendor’s data protection terms before scaling up.