Best B2B Data Enrichment APIs
Enrichment is the backbone of an AI-native sales stack. Before your agent writes outreach, it needs verified company, contact, and technographic data. These APIs give it that.
The best enrichment APIs expose clean, structured endpoints: company search, contact discovery, email verification, and CRM-native enrichment. For AI-native operators the differentiators are API quality, MCP readiness, and webhook support so your agent gets updated records automatically. We rank tools by the breadth of their capabilities in our directory — not by marketing claims.
The Ranked List
Ranked by capability coverage across 4 core capabilities, with MCP readiness and free-tier support as tiebreakers. Built from our verified directory of 109 tools.
Clay
The universal data enrichment and outbound orchestration platform.
Apollo.io
The ultimate sales intelligence and engagement platform for AI-native teams.
Dropcontact
AI-powered email enrichment and verification API for B2B data.
GetProspect
Email finder and B2B contact database API for lead generation.
LeadMagic
AI-powered data enrichment and contact validation platform.
Octolane
AI-powered prospecting and CRM data enrichment for modern sales teams.
Wiza
Real-time B2B contact data extraction from LinkedIn Sales Navigator.
Signaliz
GTM data quality and enrichment platform with REST API, MCP, CLI, and SDK for AI agents.
Lusha
The fastest way to find verified B2B mobile numbers and emails.
Zeliq
All-in-one sales prospecting platform with massive contact database.
LeadIQ
The smart B2B prospecting platform for capturing and enriching leads.
A-Leads
Up-to-date B2B lead generation with a developer-first API.
BetterEnrich
Waterfall email & phone finder with 17+ data sources.
Debounce
Email verification API with disposable detection and data enrichment features.
Kaspr
LinkedIn-first B2B contact data retrieval and prospecting tool.
Persana
AI-powered sales prospecting and lead enrichment platform.
Prospeo
High-accuracy email finder and verification API for outreach.
Reply.io
AI sales outreach & cold email platform with multichannel sequences.
Snov.io
All-in-one platform for lead generation, email verification, and outreach.
Surfe
Connect your CRM to LinkedIn and enrich prospect data in one click.
TechLeads
Technographics data and lead generation for 450M+ websites.
UpLead
B2B data platform with verified emails, mobile numbers, and intent data.
Cognism
Global B2B sales intelligence with premium mobile data.
LakeB2B
B2B data enrichment and intelligence with 730M+ verified professional profiles.
LeadCRM
Contact enrichment and sales automation.
Vainu
Company data and prospecting intelligence platform for B2B sales.
Wappalyzer
Website technology profiler - identify CMS, ecommerce, and other web technologies.
agent-outbound
Config-driven outbound pipeline for Claude Code — source, enrich, score, and sequence outreach via MCP tools.
QuickEnrich
B2B email finder and enrichment API with double-verified emails and mobile numbers.
Spider API
AI web crawling and scraping API with 22 MCP tools — extract live web data for sales intelligence.
BlitzAPI
B2B data APIs for growth and RevOps teams.
Bytemine
API-first B2B contact and company enrichment with 135M+ contacts and sub-200ms responses.
ConnectSafely
LinkedIn lead generation platform with MCP for AI-powered prospecting and engagement automation.
Fireflies.ai
AI meeting assistant with transcription and analytics APIs.
HG Insights
B2B technographics and revenue intelligence platform.
Seamless
AI-powered B2B sales intelligence with API access on every plan.
Sendburg
B2B contact intelligence platform with native MCP for AI prospecting.
Coresignal
B2B data and web scraping API for large-scale market intelligence.
Hunter.io
The standard for finding and verifying professional email addresses.
LinkedIn Sales Navigator
The premier platform for B2B relationship building and prospecting.
Apify
Web scraping and automation platform.
Browse AI
Extract and monitor data from any website with AI-powered web scraping.
BuiltWith
Technology profiling API - find what tech websites are built with.
Clodura.AI
All-in-one sales intelligence with form enrichment and cleanup APIs.
Crawl4AI
Open-source LLM-friendly web crawler and scraper.
Crawlbase
Enterprise web scraping API with smart proxy rotation and JavaScript rendering.
CUFinder
B2B data enrichment API with 20+ endpoints for company and person data.
Datagma
B2B data enrichment with 50+ attributes.
Dealfront
European sales intelligence platform combining intent data with visitor tracking.
Derrick
B2B data enrichment platform for sales intelligence.
Emailable
Fast email verification API with 99.9% accuracy and instant results.
EmailListVerify
Bulk email verification service for clean lists.
Enrich.so
People and company data enrichment API.
Enrow
Email verification and validation API for B2B lead quality.
Fathom
AI meeting assistant that records, transcribes, and summarizes your calls.
FinalScout
Extract professional email addresses from LinkedIn using AI.
GodmodeHQ
AI-powered sales automation for lead generation, research, and personalized outreach.
Icypeas
Email finder and verifier with API for bulk enrichment workflows.
Insight7
AI-powered customer insights platform for sales and product teams.
IsTempMail
Disposable and temporary email detection API for blocking fake signups.
LeadFuze
B2B lead generation and data enrichment API with intent signals.
LocalPipe.io
Find and contact local business owners — owner emails and phones from Google Maps.
Mailcheck
Email verification using social network data.
Neuron
Real-time verified contact data from LinkedIn — emails and mobile numbers with one click.
Neverbounce
Email verification API with AI-powered validation and real-time checking.
Nimble
Social CRM for relationship management and sales automation.
Outscraper
Extract high-quality business data from Google Maps and beyond.
ReachInbox
AI-powered cold email platform with warmup and automation.
SalesBlink
Full-stack cold outreach automation platform for sales teams.
Success.ai
Cold email outreach and lead enrichment platform for sales teams.
tl;dv
AI meeting notetaker that turns calls into actionable insights.
Tomba
Email finder and verification API for programmatically finding leads.
Trestle IQ
Trestle IQ reverse phone lookup API verifies phone owners, line type, activity, and lead quality.
ZeroBounce
Email validation API with detailed deliverability scoring and abuse detection.
Acuity
AI-powered sales development and prospecting services.
Adapt
Lead intelligence platform with a massive B2B contact database and API.
BatchService
Real estate data APIs for property search and portfolio monitoring.
BetterContact
Waterfall contact enrichment API with 15+ data sources.
BriteVerify
Email, phone, and address verification service.
BuzzBoard
AI-driven sales intelligence and prospecting for SMB sales.
Cien
AI-powered GTM intelligence and data-driven sales coaching.
Clado
AI sales assistant for personalized outreach and lead generation.
Clearbit (Breeze)
Real-time company and person enrichment API by HubSpot.
Dux-Soup
LinkedIn automation for prospecting.
Enrichley
Email validation with catch-all domain detection.
Findymail
Success-based email finder and verification API for B2B prospecting.
First Sales
Cold email platform with automated warmup and inbox placement.
FirstTouch
AI-driven sales outreach and prospecting for personalized lead gen.
Folderly
AI-powered email deliverability and warmup API.
FullContact
Identity resolution and data enrichment platform for customer intelligence.
FullEnrich
Waterfall enrichment API for emails and phone numbers.
GojiberryAI
AI-powered lead generation with intent signals and API access.
Inframail
Scalable cold email infrastructure with automated setup.
Kuration
Enriched prospect databases and data-as-a-service.
Lead411
Unlimited sales leads database fueled by intent data and direct dials.
Mattermark
Data-driven platform for discovering and analyzing high-growth companies.
Nektar
AI agents for CRM data automation and buyer relationship signals.
Nyne.ai
Real-time buyer intent and identity resolution platform.
Octave
AI-powered sales platform for personalized prospecting and lead gen.
PhantomBuster
Automate lead generation and data extraction across any web platform.
Pipeline CRM
Sales-first CRM for managing pipelines and closing deals.
RocketReach
People search API with 700M+ professional profiles and 60M+ companies.
Salescaptain
AI-powered sales engagement and lead generation platform.
SalesIntel
B2B contact data and intelligence platform for revenue teams.
Salestools AI SDR
Autonomous AI SDR agents that research, personalize, and book meetings across email and LinkedIn.
SimilarTech
Technology intelligence platform - track tech adoption and competitor landscapes.
Telescope
AI-powered B2B prospecting and lead discovery tool.
Warmbox
Email warmup tool to ensure cold emails never land in spam.
WebTrackly
Domain intelligence API for zone files, technology data, and business leads.