CompareSide-by-Side Comparison
FullContact
Identity resolution and data enrichment platform for customer intelligence.
VS
Versium
B2B2C identity resolution and data enrichment platform.
FullContact
Versium
API Type
REST
REST
MCP Ready
NO
YES
Free Tier
NO
YES
SDKs
Node.js, Python, Java
Python, JavaScript
Webhooks
YES
NO
Capabilities
AI Identity Resolution, Real-time Data Enrichment, Cross-channel Person Mapping, B2B Data Enrichment
Contact Enrichment, Demographic Append, Firmographic Append, Identity Resolution, Audience Creation
FullContact
Versium
API Type
REST
REST
MCP Ready
NO
YES
Free Tier
NO
YES
SDKs
Node.js, Python, Java
Python, JavaScript
Webhooks
YES
NO
Capabilities
AI Identity Resolution, Real-time Data Enrichment, Cross-channel Person Mapping, B2B Data Enrichment
Contact Enrichment, Demographic Append, Firmographic Append, Identity Resolution, Audience Creation
API & MCP Analysis
For AI-native operators choosing between FullContact and Versium, the decision comes down to API accessibility and how easily your agent can interface with each tool.
Versium has the edge here with an official MCP server, letting you connect it directly to Claude or Cursor. FullContact requires a REST API integration, which means your agent needs the API docs to build the connection.
FullContact Starter Prompt
"Claude, use the FullContact API to enrich this list of 100 email addresses with LinkedIn URLs, job titles, and current company details."
Versium Starter Prompt
"Claude, use Versium to enrich this contact list with demographic data."
Support & Guidance
FullContact vs Versium FAQ
01
Which has a better API for AI agents — FullContact or Versium?
FullContact provides a REST API. Versium also offers an MCP server. Check the comparison table above for a full breakdown of SDKs, webhooks, and capabilities.
02
Can I connect FullContact or Versium to Claude or Cursor?
Versium has an official MCP server for direct connection. For FullContact, you can use the REST API docs with your AI agent.
03
FullContact vs Versium — which is better for sales automation?
It depends on your stack. FullContact is "Identity resolution and data enrichment platform for customer intelligence." while Versium is "B2B2C identity resolution and data enrichment platform.". Compare their API capabilities, MCP support, and pricing above to find the right fit for your workflow.