Clay API
Clay — AI-powered data enrichment and outbound sales automation platform that waterfalls 75+ data sources to find contact info, company data, and trigger personalized outreach at scale.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
SOC2 certified. TLS enforced. US-only data processing. GDPR compliance for EU data collection requires careful evaluation — depends on underlying data sources used.
⚡ Reliability
Best When
Your sales/outbound agent needs to enrich lead lists using multiple data sources with fallback waterfall logic and AI personalization, without managing individual data provider APIs.
Avoid When
You need synchronous, real-time data enrichment in a request/response pattern — use Clearbit or Apollo's direct API.
Use Cases
- • Agents triggering Clay enrichment tables to enrich lead lists with company data, emails, and contact info
- • Waterfall enrichment — agents submitting contacts to Clay which tries multiple data sources until finding email/phone
- • ICP scoring — agents running Clay AI formulas to score leads against ideal customer profiles automatically
- • Outbound automation — agents populating Clay tables with prospects to trigger personalized email sequences
- • Research automation — agents using Clay's AI agent row mode to do deep company research for each prospect
Not For
- • Real-time enrichment API calls — Clay is table/workflow-based, not a synchronous enrichment endpoint
- • Teams needing raw data API access — Clay abstracts data sources; use Clearbit or Apollo directly for raw API access
- • Non-sales use cases — Clay is optimized for sales/outbound, not general data enrichment
Interface
Authentication
API key from Clay account settings. Bearer token in requests. Webhook auth via secret for incoming data. Account-level access — no scope granularity.
Pricing
Credit-based pricing — each enrichment action consumes credits. External data source integrations may consume multiple credits. Credit costs vary by data action complexity.
Agent Metadata
Known Gotchas
- ⚠ Clay is workflow-first, not API-first — programmatic control is secondary to the visual UI experience
- ⚠ Enrichment is async — agents must poll table status or use webhooks to know when enrichment is complete
- ⚠ Credit consumption is non-deterministic — waterfall enrichment may consume 1-10 credits per row depending on data found
- ⚠ Table schema must be pre-defined in UI — agents cannot create new columns/formulas purely via API
- ⚠ Data from Clay's 75+ integrations has varying freshness — some sources are real-time, others weekly refreshed
Alternatives
Full Evaluation Report
Detailed scoring breakdown, competitive positioning, security analysis, and improvement recommendations for Clay API.
Scores are editorial opinions as of 2026-03-06.