Best Sales Intelligence APIs
Sales intelligence gives your agent the context to prospect well: companies, contacts, intent, and tech signals. The best APIs make that data queryable, not static.
Prioritize APIs with broad company and contact coverage, firmographic and intent data, and clean query endpoints. MCP-ready tools let your agent search prospects conversationally. Webhook and export support matter for keeping your CRM fresh.
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 100 tools.
ZoomInfo
The all-in-one AI GTM platform with GTM.AI headless context layer for AI agents.
Cognism
Global B2B sales intelligence with premium mobile data.
LeadIQ
The smart B2B prospecting platform for capturing and enriching leads.
Vainu
Company data and prospecting intelligence platform for B2B sales.
Wappalyzer
Website technology profiler - identify CMS, ecommerce, and other web technologies.
Dropcontact
AI-powered email enrichment and verification API for B2B data.
Lusha
The fastest way to find verified B2B mobile numbers and emails.
Zeliq
All-in-one sales prospecting platform with massive contact database.
Coresignal
B2B data and web scraping API for large-scale market intelligence.
A-Leads
Up-to-date B2B lead generation with a developer-first API.
BuiltWith
Technology profiling API - find what tech websites are built with.
Clodura.AI
All-in-one sales intelligence with form enrichment and cleanup APIs.
Datagma
B2B data enrichment with 50+ attributes.
Dealfront
European sales intelligence platform combining intent data with visitor tracking.
GetProspect
Email finder and B2B contact database API for lead generation.
LeadFuze
B2B lead generation and data enrichment API with intent signals.
LeadMagic
AI-powered data enrichment and contact validation platform.
Octolane
AI-powered prospecting and CRM data enrichment for modern sales teams.
Persana
AI-powered sales prospecting and lead enrichment platform.
Surfe
Connect your CRM to LinkedIn and enrich prospect data in one click.
UpLead
B2B data platform with verified emails, mobile numbers, and intent data.
Acuity
AI-powered sales development and prospecting services.
BatchService
Real estate data APIs for property search and portfolio monitoring.
BuzzBoard
AI-driven sales intelligence and prospecting for SMB sales.
GojiberryAI
AI-powered lead generation with intent signals and API access.
Lead411
Unlimited sales leads database fueled by intent data and direct dials.
Mattermark
Data-driven platform for discovering and analyzing high-growth companies.
Nyne.ai
Real-time buyer intent and identity resolution platform.
SalesIntel
B2B contact data and intelligence platform for revenue teams.
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.
Signaliz
GTM data quality and enrichment platform with REST API, MCP, CLI, and SDK for AI agents.
ConnectSafely
LinkedIn lead generation platform with MCP for AI-powered prospecting and engagement automation.
HG Insights
B2B technographics and revenue intelligence platform.
OpenFunnel
AI-powered prospecting and intent signal identification platform.
Seamless
AI-powered B2B sales intelligence with API access on every plan.
Warmly
Autonomous revenue orchestration platform for identifying website intent.
Clay
The universal data enrichment and outbound orchestration platform.
Hunter.io
The standard for finding and verifying professional email addresses.
LinkedIn Sales Navigator
The premier platform for B2B relationship building and prospecting.
Salesforce
The world's #1 AI-powered CRM and programmable 'Headless 360' ecosystem.
6sense
The leading AI platform for account-based sales and marketing intelligence.
Artillery
Modern performance testing and monitoring for APIs.
BetterEnrich
Waterfall email & phone finder with 17+ data sources.
Breakcold
Social selling CRM to build relationships via LinkedIn and Twitter.
Browse AI
Extract and monitor data from any website with AI-powered web scraping.
Clodura
AI-driven sales prospecting and lead enrichment platform.
Common Room
The intelligent customer platform for modern GTM teams.
CUFinder
B2B data enrichment API with 20+ endpoints for company and person data.
Debounce
Email verification API with disposable detection and data enrichment features.
Derrick
B2B data enrichment platform for sales intelligence.
Enrich.so
People and company data enrichment API.
Factors.ai
B2B marketing analytics and account intelligence platform.
Firehose
Real-time web monitoring and data streaming for AI-native workflows.
Genesy
AI-powered lead generation and sales automation platform.
GodmodeHQ
AI-powered sales automation for lead generation, research, and personalized outreach.
Journy.io
Customer intelligence and product-led growth (PLG) platform.
Kaspr
LinkedIn-first B2B contact data retrieval and prospecting tool.
Koala
Agentic AI platform for sales signal prioritization and qualification.
Leadfeeder
Identify companies visiting your website and track their behavior.
Nimble
Social CRM for relationship management and sales automation.
Outscraper
Extract high-quality business data from Google Maps and beyond.
RB2B
Identify anonymous website visitors and convert them into LinkedIn leads.
Reply.io
AI sales outreach & cold email platform with multichannel sequences.
SalesBlink
Full-stack cold outreach automation platform for sales teams.
Snov.io
All-in-one platform for lead generation, email verification, and outreach.
TechLeads
Technographics data and lead generation for 450M+ websites.
Wiza
Real-time B2B contact data extraction from LinkedIn Sales Navigator.
Adapt
Lead intelligence platform with a massive B2B contact database and API.
BetterContact
Waterfall contact enrichment API with 15+ data sources.
Bombora
Leading B2B intent data provider with company surge and topic-based signals.
Clado
AI sales assistant for personalized outreach and lead generation.
Clearbit (Breeze)
Real-time company and person enrichment API by HubSpot.
Crunchbase
The definitive B2B database for company and investment research.
Demandbase
Account-based marketing and sales intelligence platform powered by AI.
Draup
AI-powered sales intelligence and talent management platform.
Dux-Soup
LinkedIn automation for prospecting.
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.
GetSignals
AI-powered intent signal identification and prospecting tool.
Intellizence
AI-powered company intelligence and business signal API.
Kuration
Enriched prospect databases and data-as-a-service.
LakeB2B
B2B data enrichment and intelligence with 730M+ verified professional profiles.
Landbase
AI-driven GTM platform for prospecting and lead generation.
LeadCRM
Contact enrichment and sales automation.
Membrain
B2B sales effectiveness platform for executing complex sales strategies.
Nektar
AI agents for CRM data automation and buyer relationship signals.
Octave
AI-powered sales platform for personalized prospecting and lead gen.
Pipeline CRM
Sales-first CRM for managing pipelines and closing deals.
Qualified
Pipeline generation platform for B2B teams to identify website intent.
RocketReach
People search API with 700M+ professional profiles and 60M+ companies.
Salescaptain
AI-powered sales engagement and lead generation platform.
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.
Snitcher
B2B website visitor identification and lead generation platform.
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.