Enrich Layer API + MCP vs Prospeo API + MCP

Enrich Layer API + MCP

Pay-as-you-go credits from $10, non-expiring unless idle for 18 months. Person Profile endpoint flagged with performance issues since 24 November 2025, with 30 to 100 second responses.

Prospeo API + MCP

MCP tool descriptions say when to use each tool, its credit cost and the next call. No status page, SLA or changelog.

Enrich Layer API + MCP

1. Top up once before testing. Trial keys run at 2 requests a minute
2. Set the person profile timeout to at least 100 seconds
3. Ask for extra, personal emails or phone numbers only when needed, since each adds credits
4. Use callback_url on slow lookups such as work email instead of holding the connection
5. Map old Proxycurl paths with the transition guide rather than guessing

Prospeo API + MCP

1. Call search_suggestions before using location, technology or industry filters, or the search returns nothing
2. Pass person_id values from search into bulk_enrich_person, 25 at a time
3. Branch on the body error_code, not the HTTP status, which is 400 for most failures
4. Set enrich_mobile only when needed. A mobile costs 10 credits against 1 for an email
5. Use Enrich Person. The old Email Finder endpoint was removed in March 2026