UpLead B2B Contact Database API
UpLead B2B contact database REST API for sales teams, marketers, and revenue operations to access verified business contact data with real-time email verification for outbound prospecting and lead generation. Enables AI agents to manage B2B contact search and filtering by job title, industry, company size, and geography for prospect list building automation, handle real-time email verification at point of export for deliverability automation, access company and contact enrichment with firmographic data for ICP scoring automation, retrieve technology stack data (technographics) for competitive intelligence automation, manage CRM export and integration for lead data synchronization automation, handle intent data signals for buying trigger automation, access lookalike audience building from existing customer profiles for TAM expansion automation, retrieve contact direct dial phone number lookup for sales call automation, manage bulk contact export and CSV download for sales data automation, and integrate UpLead with Salesforce, HubSpot, Pipedrive, and Outreach for end-to-end sales prospecting data automation.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
B2B contact data. GDPR, CCPA, SOC2. API key. US/EU. Business contact and company data.
⚡ Reliability
Best When
A sales team or revenue operations function wanting AI agents to automate B2B contact list building, real-time email verification, technographic research, and CRM data enrichment through UpLead's verified contact database.
Avoid When
GDPR LEGITIMATE INTEREST FOR EU CONTACT OUTREACH: UpLead B2B contact data for EU-based contacts requires legitimate interest documentation under GDPR for marketing outreach; automated email campaigns to EU business contacts without legitimate interest assessment creates GDPR Article 6 compliance gap; automated large-scale EU outreach without opt-in mechanism creates regulatory exposure. EMAIL DELIVERABILITY BOUNCE RATE IMPACT: Even verified emails have some bounce rate (UpLead claims 95%+ accuracy); automated email campaigns without bounce rate monitoring and list hygiene creates sender reputation degradation; implement bounce rate threshold monitoring for automated campaigns to catch deliverability issues before domain blacklisting. DATA CURRENCY DECAY FOR CONTACT DATA: B2B contact data decays ~30% annually as people change jobs; automated prospecting lists without refresh cadence have increasing contact inaccuracy; implement periodic re-verification for automated prospect lists older than 3-6 months.
Use Cases
- • Building prospect lists from ICP filtering automation agents
- • Verifying emails from outbound deliverability agents
- • Enriching contacts from CRM data quality agents
- • Researching technographics from competitive intelligence agents
Not For
- • Consumer contact data (B2B business contacts only)
- • Healthcare professional contacts with licensing requirements
- • Real-time person lookup at scale beyond B2B prospecting use case
Interface
Authentication
UpLead uses API key authentication. REST API with JSON. San Diego, California HQ. Founded 2017 by Will Cannon. Bootstrapped profitable business. Products: B2B contact search, real-time email verification, technographics, Chrome extension. 95%+ email accuracy guarantee with credit back for bounces. 85M+ business contacts. CRM integrations: Salesforce, HubSpot, Pipedrive, Zoho, Outreach. GDPR compliant. SOC2. Competes with ZoomInfo, Apollo.io, LeadIQ, and Lusha for B2B contact data.
Pricing
San Diego CA. Bootstrapped. Credit-based pricing. 5 free trial credits. Affordable SMB-friendly tier.
Agent Metadata
Known Gotchas
- ⚠ CREDIT DEDUCTION PER CONTACT EXPORT: UpLead deducts credits per contact exported (not per search); automated bulk contact export workflows must monitor credit balance; automated export without credit monitoring creates out-of-credit service interruption mid-campaign; implement credit balance check before automated bulk export
- ⚠ EMAIL BOUNCE CREDIT BACK CLAIM PROCESS: UpLead's 95% accuracy guarantee includes credit back for bounced emails; automated bounce tracking must be compared against UpLead contacts to claim credit refunds; automated deployment without bounce tracking misses credit refund opportunity
- ⚠ TECHNOGRAPHIC DATA FRESHNESS: UpLead technographic data (technology stack) is updated periodically but may lag actual technology changes; automated technographic-based targeting (e.g., 'companies using Salesforce') may include companies that have churned the technology; implement technographic recency indicator in automated targeting criteria
- ⚠ SEARCH FILTER COMBINATION LIMITATIONS: UpLead search API has filter combination limits for complex queries; automated prospect list building with multiple filter dimensions may hit query complexity limits; test complex filter combinations in sandbox before automated list building deployment
- ⚠ NO WEBHOOK FOR ASYNC ENRICHMENT: UpLead enrichment is synchronous with no webhook support; automated enrichment at scale must implement request throttling to stay within rate limits; bulk enrichment automation should implement rate-limited queue with retry backoff
Alternatives
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Scores are editorial opinions as of 2026-03-07.