Best Intent Data & Buying Signals APIs
Intent data tells your agent which accounts are researching topics relevant to you — the signal to act before your competitor does.
Prioritize APIs with firmographic + intent blending, topic-level or product-level intent, and integration with your ABM workflows. Clean query endpoints let your agent segment high-intent accounts automatically.
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 84 tools.
Bombora
Leading B2B intent data provider with company surge and topic-based signals.
6sense
The leading AI platform for account-based sales and marketing intelligence.
Demandbase
Account-based marketing and sales intelligence platform powered by AI.
Coresignal
B2B data and web scraping API for large-scale market intelligence.
LeadIQ
The smart B2B prospecting platform for capturing and enriching leads.
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.
LeadFuze
B2B lead generation and data enrichment API with intent signals.
UpLead
B2B data platform with verified emails, mobile numbers, and intent data.
BatchService
Real estate data APIs for property search and portfolio monitoring.
Cognism
Global B2B sales intelligence with premium mobile data.
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.
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.
Dropcontact
AI-powered email enrichment and verification API for B2B data.
HG Insights
B2B technographics and revenue intelligence platform.
Lusha
The fastest way to find verified B2B mobile numbers and emails.
OpenFunnel
AI-powered prospecting and intent signal identification platform.
Warmly
Autonomous revenue orchestration platform for identifying website intent.
Zeliq
All-in-one sales prospecting platform with massive contact database.
Clay
The universal data enrichment and outbound orchestration platform.
Hunter.io
The standard for finding and verifying professional email addresses.
Salesforce
The world's #1 AI-powered CRM and programmable 'Headless 360' ecosystem.
A-Leads
Up-to-date B2B lead generation with a developer-first API.
Apify
Web scraping and automation platform.
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.
GetProspect
Email finder and B2B contact database API for lead generation.
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.
LeadMagic
AI-powered data enrichment and contact validation platform.
Nimble
Social CRM for relationship management and sales automation.
Nutshell
SMB CRM with API for sales pipeline management.
Octolane
AI-powered prospecting and CRM data enrichment for modern sales teams.
Outscraper
Extract high-quality business data from Google Maps and beyond.
Persana
AI-powered sales prospecting and lead enrichment platform.
RB2B
Identify anonymous website visitors and convert them into LinkedIn leads.
ReachInbox
AI-powered cold email platform with warmup and automation.
Reply.io
AI sales outreach & cold email platform with multichannel sequences.
Surfe
Connect your CRM to LinkedIn and enrich prospect data in one click.
Acuity
AI-powered sales development and prospecting services.
Adapt
Lead intelligence platform with a massive B2B contact database and API.
BetterContact
Waterfall contact enrichment API with 15+ data sources.
BuzzBoard
AI-driven sales intelligence and prospecting for SMB sales.
Clearbit (Breeze)
Real-time company and person enrichment API by HubSpot.
Crunchbase
The definitive B2B database for company and investment research.
Databook
Strategic relationship management platform for enterprise sales.
Draup
AI-powered sales intelligence and talent management platform.
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.
GojiberryAI
AI-powered lead generation with intent signals and API access.
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.
Lead411
Unlimited sales leads database fueled by intent data and direct dials.
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.
Qualified
Pipeline generation platform for B2B teams to identify website intent.
RocketReach
People search API with 700M+ professional profiles and 60M+ companies.
Snitcher
B2B website visitor identification and lead generation platform.
Warmbox
Email warmup tool to ensure cold emails never land in spam.