Cognism B2B Sales Intelligence API
Cognism B2B Sales Intelligence REST API for GDPR-compliant contact and company prospecting data platform. Enables AI agents to manage contact and company data enrichment for CRM and sales tools, handle diamond data (phone-verified mobile numbers) retrieval for sales outreach, access GDPR-compliant B2B contact data with do-not-call list checking, retrieve intent data from Bombora partnership for account prioritization, manage company technographic and firmographic data enrichment, handle list building and prospecting with ICP-based filtering, access Cognism Chrome extension data for LinkedIn and website enrichment, retrieve company financial and growth signal data, manage CRM sync for Salesforce, HubSpot, and Outreach enrichment, and integrate contact intelligence with sales engagement and marketing automation platforms.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
B2B data. SOC2, GDPR, CCPA. API key. EU/US. Professional contact and company data.
⚡ Reliability
Best When
A B2B sales or marketing team using Cognism wants AI agents to automate contact enrichment, prospect list building, CRM enrichment with verified phone data, and sales engagement platform integration.
Avoid When
PRIVACY RISK: Even GDPR-compliant B2B data requires proper legal basis for use — verify contact opt-out status before outreach. Do-not-call list compliance must be maintained for phone outreach. Contact data accuracy degrades over time; implement refresh cadence.
Use Cases
- • Enriching CRM contacts with verified mobile numbers from sales automation agents
- • Building ICP-matched prospect lists from SDR automation agents
- • Accessing GDPR-compliant B2B data from European prospecting agents
- • Integrating contact data with sales engagement from outbound agents
Not For
- • Consumer data collection without B2B professional contact focus
- • High-volume cold email without GDPR and CAN-SPAM compliance
- • Non-commercial research without B2B sales intelligence use case
Interface
Authentication
Cognism uses API key authentication. Per-account token with subscription access. REST API at developer.cognism.com. No native webhooks — polling-based data access. Salesforce, HubSpot, Outreach, and SalesLoft native integrations. GDPR-compliant data with TPS/CTPS registry checking for UK.
Pricing
London, United Kingdom. Founded 2016. Private ($200M+ funding). B2B sales intelligence market. 3,000+ customers. GDPR-native data provider. Diamond data (phone-verified) differentiator. UK TPS/CTPS compliance built-in. Strong European B2B market. Competes with ZoomInfo and Apollo.io for B2B contact data.
Agent Metadata
Known Gotchas
- ⚠ PRIVACY RISK: GDPR-compliant data still requires legitimate basis for use; check DNC/TPS registry status before phone outreach automation
- ⚠ Diamond data quota — phone-verified mobile numbers have separate quota from standard contact data; track usage to avoid overrun
- ⚠ UK-specific compliance — TPS/CTPS registry checking built-in for UK; verify compliance for other countries separately
- ⚠ Data refresh cadence — B2B contact data has high decay rate (30%+ annually); implement regular enrichment refresh for static lists
- ⚠ CRM integration preferred — native Salesforce and HubSpot integrations are more robust than direct API for standard CRM enrichment
- ⚠ API documentation access — developer.cognism.com requires customer account; limited public documentation
Alternatives
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Scores are editorial opinions as of 2026-03-07.