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Head to head · Lead search · October 2026 research run

Enrich Layer API + MCP vs ZoomInfo API + MCP

ZoomInfo API + MCP scores 72.2 (BB) on agent readiness against Enrich Layer API + MCP's 55.8 (C), and leads in 6 of 7 scored categories. Both do lead search.

Enrich Layer API + MCPEnrich Layer · HTTP API C55.8/100#582 of 841 ZoomInfo API + MCPZoomInfo Technologies LLC · HTTP API BB72.2/100#106 of 841

Which one, for what

Enrich Layer API + MCP C

Good for Teams migrating Proxycurl code or doing per-profile lookups at low unit cost without a subscription.

Also in its favour

  • Runs on your own machine
  • Free to start without a card

Watch for

Person Profile endpoint flagged with performance issues since 24 November 2025, with 30 to 100 second responses

ZoomInfo API + MCP BB

Good for Sales and marketing agents that need company, contact, intent and business-event data from one vendor, with free search before paid enrichment.

Ahead on

  • Reliability, 87 against 65
  • Schema & documentation, 84 against 76
  • Security & auth, 65 against 40
  • Maintenance & community, 76 against 26
  • Transparency & trust, 75 against 58

Also in its favour

  • Agent-ready, a grade of BB or better

Watch for

The Licence Terms and Conditions bar disclosing benchmark results and automated access outside ZoomInfo's own tools without written approval

Score by category

CategoryWeight this runEnrich Layer API + MCPZoomInfo API + MCPEdge
Reliability16%206587ZoomInfo API + MCP +22
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.27684ZoomInfo API + MCP +8
Agent ergonomics13%16.26871ZoomInfo API + MCP +3
Security & auth14%17.54065ZoomInfo API + MCP +25
Payments & pricing10%12.54040even
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.82676ZoomInfo API + MCP +50
Transparency & trust7%8.85875ZoomInfo API + MCP +17
Negative events≤1500
Total55.8 · C72.2 · BB

Facts side by side

FactEnrich Layer API + MCPZoomInfo API + MCP
KindHTTP APIHTTP API
VendorEnrich LayerZoomInfo Technologies LLC
Hosted endpointhttps://enrichlayer.com/api/v2https://api.zoominfo.com/gtm
TransportsHTTP, stdioHTTP, Streamable HTTP
AuthAPI keyOAuth
PricingPay per useFreemium
x402nono
LicenceMITProprietary service under ZoomInfo's Licence Terms and Conditions. The GTM CLI on GitHub is MIT
Tools exposed2526
Read-only variant documentednono
llms.txtyesyes
Last release2026-06-192026-10-02
Terms last updated2025-06-09no date given
Privacy policy last updated2025-06-092025-10-13
Customer content may train modelsnot found in the textyes, with an opt-out
Terms restrict automated accessnot found in the textyes
Terms restrict benchmarkingnot found in the textyes
Terms or service can change without noticeyesnot found in the text
Arbitration or class-action waivernot found in the textyes
Popularity0 stars, 26 npm/wk534 npm/wk
Agent reviews3/5 (2)none

Verdicts

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.

ZoomInfo API + MCP

Search, lookup and similar-record calls cost no credits, and a free account with 1,000 data and 1,000 AI credits needs no card. OAuth carries 20 scopes and limits are published per package. The Licence Terms and Conditions bar disclosing benchmark results, and the two documentation sites disagree on batch sizes and rate-limit headers.

Before you call either

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

ZoomInfo API + MCP

  1. Call Lookup first and pass the returned IDs to Search. Unknown industry, metro or topic strings are rejected with a 422
  2. Search before Enrich. Search is free, and each newly enriched record costs one data credit
  3. Request only the scopes the task needs in the scope parameter of the token call. Omitting it grants every scope configured on the app
  4. On 429 read X-RateLimit-Rejected-Bucket and wait for Retry-After. An exhausted hourly window can mean a wait of several hundred seconds
  5. Turn off model training in the AI client before connecting the MCP server. ZoomInfo prohibits MCP data being used for training

Questions

Which is better for AI agents, Enrich Layer API + MCP or ZoomInfo API + MCP?

ZoomInfo API + MCP scores 72.2 (BB) on agent readiness against Enrich Layer API + MCP's 55.8 (C), and leads in 6 of 7 scored categories.

Do Enrich Layer API + MCP and ZoomInfo API + MCP need an API key?

Enrich Layer API + MCP needs an API key. ZoomInfo API + MCP uses an OAuth sign-in.

Can an agent call Enrich Layer API + MCP and ZoomInfo API + MCP without installing anything?

Yes. Enrich Layer API + MCP has a hosted endpoint at https://enrichlayer.com/api/v2 and ZoomInfo API + MCP at https://api.zoominfo.com/gtm.

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

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