Data Enrichment
Technology, company, and catalog signals. Join onto your existing datasets. Build proprietary scoring.
Enrich with web signals
Technology Stack
5,000+ technologies detected. CMS, e-commerce, analytics, marketing, payments, and more.
Catalog Signals
Product count, sitemap size, robots directives. Proxy signals for business scale.
Change History
When technologies were added or removed. Migration patterns and timing.
Detection Evidence
Reason codes for every detection. Know exactly why a technology was matched.
Built for pipelines
RESTful API
Single-domain lookups or batch processing. <1s response time. Rate limits scale with your plan.
Parquet Exports
Columnar format for data warehouses. Scheduled drops to your bucket (S3/R2). Enterprise feature.
MCP Integration
Agent-native access. "Bring What-Stack into your agent." Works with Claude, OpenAI, and more.
Clay, n8n, Zapier
Pre-built integrations for popular workflow tools. Enrich leads in your existing stack.
Data-native buyers
Data Teams
Enrich your warehouse with technographic signals. Build custom scoring models.
RevOps
Score leads by tech fit. Route to the right reps. Prioritize by signal strength.
Data Product Builders
Layer our signals into your products. Enterprise licensing available.
BI Analysts
Join tech data to your customer data. Segment and analyze by stack.
Add web signals to your data
API access starts at $299/mo. Enterprise data drops available.