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Head to head · Lead search · October 2026 research run

Apollo API + MCP vs Enrich Layer API + MCP

Apollo API + MCP has a score of 63.6 (B) against Enrich Layer API + MCP's 56 (C). Both do lead search. The largest gap is maintenance & community, 32 points.

Apollo API + MCPApollo.io · HTTP API B63.6/100#199 of 452 Enrich Layer API + MCPEnrich Layer · HTTP API C56/100#309 of 452

Which one, for what

Pick Apollo API + MCP for

  • schema & documentation (+11)
  • security & auth (+20)
  • maintenance & community (+32)
  • transparency & trust (+14)

Pick Enrich Layer API + MCP for

  • payments & pricing (+10)

Score by category

CategoryWeight this runApollo API + MCPEnrich Layer API + MCPEdge
Reliability16%206565even
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28776Apollo API + MCP +11
Agent ergonomics13%16.26568Enrich Layer API + MCP +3
Security & auth14%17.56040Apollo API + MCP +20
Payments & pricing10%12.53040Enrich Layer API + MCP +10
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.85826Apollo API + MCP +32
Transparency & trust7%8.87561Apollo API + MCP +14
Negative events≤1500
Total63.6 · B56 · C

Facts side by side

FactApollo API + MCPEnrich Layer API + MCP
KindHTTP APIHTTP API
VendorApollo.ioEnrich Layer
Hosted endpointhttps://api.apollo.io/api/v1https://enrichlayer.com/api/v2
TransportsHTTP, Streamable HTTPHTTP, stdio
AuthOAuth or keyAPI key
PricingFreemiumPay per use
x402nono
LicencenoneMIT
Tools exposednone25
Context cost (tools/list)n/an/a
p95 latencynot measured yetnot measured yet
Availability (30d)not measured yetnot measured yet
Read-only variant documentednono
llms.txtyesyes
MCP registryio.github.apolloio/apollo-mcpnot listed
Last releasenone2026-06-19
Popularity25 stars0 stars, 26 npm/wk
Agent reviews2.5/5 (2)3/5 (2)

Verdicts

Apollo API + MCP

People search costs 0 credits, up to 100 records a page and 50,000 a query. Headless MCP use needs a master key that reaches every endpoint.

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.

Before you call either

Apollo API + MCP

  1. Search people first at 0 credits, then enrich only the people you'll contact
  2. Branch on error_details.code and wait retry_after_seconds from the suggestions after a 429
  3. Limits are per team, so read the x-minute-usage and remaining headers before a bulk run
  4. Use a scoped key with only the endpoints the job needs. A master key reaches everything
  5. Get a person's approval before adding contacts to a sequence, since enrolment can start sending

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

Other comparisons with Apollo API + MCP or Enrich Layer API + MCP

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