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Head to head · Lead search · October 2026 research run

Fuse MCP vs ZoomInfo API + MCP

ZoomInfo API + MCP scores 72.2 (BB) on agent readiness against Fuse MCP's 47.9 (D), and leads in every scored category. Both do lead search.

Fuse MCPFuseAI, LLC · MCP server D47.9/100#731 of 841 ZoomInfo API + MCPZoomInfo Technologies LLC · HTTP API BB72.2/100#106 of 841

Which one, for what

Fuse MCP D

Good for Suited to a salesperson or founder who wants an assistant to build prospect lists, enrich them and run email and LinkedIn outreach inside one Fuse account.

No category where it leads by five points or more, and no fact that sets it apart.

Watch for

The only OAuth scope is mcp:tools, so a connection can do everything its user can, including sending email and LinkedIn messages

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 40
  • Schema & documentation, 84 against 72
  • Agent ergonomics, 71 against 57
  • Security & auth, 65 against 45
  • Payments & pricing, 40 against 30
  • Maintenance & community, 76 against 35
  • Transparency & trust, 75 against 49

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 runFuse MCPZoomInfo API + MCPEdge
Reliability16%204087ZoomInfo API + MCP +47
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.27284ZoomInfo API + MCP +12
Agent ergonomics13%16.25771ZoomInfo API + MCP +14
Security & auth14%17.54565ZoomInfo API + MCP +20
Payments & pricing10%12.53040ZoomInfo API + MCP +10
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.83576ZoomInfo API + MCP +41
Transparency & trust7%8.84975ZoomInfo API + MCP +26
Negative events≤1500
Total47.9 · D72.2 · BB

Facts side by side

FactFuse MCPZoomInfo API + MCP
KindMCP serverHTTP API
VendorFuseAI, LLCZoomInfo Technologies LLC
Hosted endpointhttps://mcp.fuseai.comhttps://api.zoominfo.com/gtm
TransportsStreamable HTTPHTTP, Streamable HTTP
AuthOAuthOAuth
PricingFreemiumFreemium
x402nono
LicenceProprietary hosted service under FuseAI's terms of service. No public source repository foundProprietary service under ZoomInfo's Licence Terms and Conditions. The GTM CLI on GitHub is MIT
Tools exposed29026
Read-only variant documentedyesno
llms.txtyesyes
Last release2026-10-072026-10-02
Terms last updated2026-07-01no date given
Privacy policy last updated2026-07-012025-10-13
Customer content may train modelsnot found in the textyes, with an opt-out
Terms restrict automated accessyesyes
Terms restrict benchmarkingnot found in the textyes
Terms or service can change without noticenot found in the textnot found in the text
Arbitration or class-action waiveryesyes
Popularitynone534 npm/wk

Verdicts

Fuse MCP

The server documents 290 tools with read-only and destructive annotations, OAuth with PKCE and dynamic client registration, and published limits of 60 requests a minute. The single mcp:tools scope grants everything the user can do, sends happen at once with no undo, and no status page, changelog or security contact was found.

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

Fuse MCP

  1. Keep the client's approval prompt on for every tool that is not read-only. Sends, CRM pushes and Slack posts run at once with no undo
  2. Launch a campaign only on an explicit request. Creating one makes a draft, and update_campaign_status_tool starts real outreach
  3. Call get_credits_balance and get_credit_prices first. Every call needs at least 100 credits, and searches cost 2 credits a result
  4. Resolve filter values with lookup_filter_values or get_company_search_enums before search_people or search_companies
  5. Start long work with deep_research_start, then poll deep_research_status. A tool call has 60 seconds, and runs take 5 to 20 minutes

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, Fuse MCP or ZoomInfo API + MCP?

ZoomInfo API + MCP scores 72.2 (BB) on agent readiness against Fuse MCP's 47.9 (D), and leads in every scored category.

Do Fuse MCP and ZoomInfo API + MCP need an API key?

Both use an OAuth sign-in.

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

Yes. Fuse MCP has a hosted endpoint at https://mcp.fuseai.com and ZoomInfo API + MCP at https://api.zoominfo.com/gtm.

Other comparisons with Fuse MCP or ZoomInfo API + MCP

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