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Head to head · Lead enrichment · October 2026 research run

Clearbit vs Fuse MCP

Fuse MCP scores 47.9 (D) on agent readiness against Clearbit's 13.5 (F), and leads in 6 of 7 scored categories. Clearbit leads on transparency & trust. Both do lead enrichment.

Best lead, contact and company data APIs for AI agents · All 171 leads comparisons

ClearbitHubSpot, Inc. · HTTP API F13.5/100#1056 of 1076 Fuse MCPFuseAI, LLC · MCP server D47.9/100#883 of 1076

Which one, for what

Clearbit F

Best for Only for teams that already hold a Clearbit contract.

Ahead on

  • Transparency & trust, 66 against 49

Watch for

No public API or MCP server an outside agent can call

Fuse MCP D

Best 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.

Ahead on

  • Reliability, 40 against 30
  • Schema & documentation, 72 against 0
  • Agent ergonomics, 57 against 0
  • Security & auth, 45 against 8
  • Payments & pricing, 30 against 0
  • Maintenance & community, 35 against 4

Also in its favour

  • A hosted endpoint, with nothing to install

Watch for

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

Score by category

CategoryWeight this runClearbitFuse MCPEdge
Reliability16%203040Fuse MCP +10
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.2072Fuse MCP +72
Agent ergonomics13%16.2057Fuse MCP +57
Security & auth14%17.5845Fuse MCP +37
Payments & pricing10%12.5030Fuse MCP +30
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.8435Fuse MCP +31
Transparency & trust7%8.86649Clearbit +17
Negative events≤1500
TotalF 13.5/100D 47.9/100

Facts side by side

FactClearbitFuse MCP
KindHTTP APIMCP server
VendorHubSpot, Inc.FuseAI, LLC
Hosted endpointno (local only)https://mcp.fuseai.com
TransportsHTTPStreamable HTTP
AuthAPI keyOAuth
PricingPaidFreemium
x402nono
LicenceProprietary service under the Clearbit Terms of Service (30 May 2025), provided by HubSpot, Inc. under the Clearbit brandProprietary hosted service under FuseAI's terms of service. No public source repository found
Tools exposednone290
Read-only variant documentednoyes
llms.txtnoyes
Last release2025-12-082026-10-07
Terms last updated2025-05-302026-07-01
Privacy policy last updated2026-08-312026-07-01
Customer content may train modelsyesnot found in the text
Terms restrict automated accessnot found in the textyes
Terms restrict benchmarkingnot found in the textnot found in the text
Terms or service can change without noticenot found in the textnot found in the text
Arbitration or class-action waivernot found in the textyes

Verdicts

Clearbit

There is no public API or MCP server an outside agent can call today. Clearbit's APIs still run for existing customers behind a login, and its free tools and Logo API were retired in 2025. HubSpot's Breeze Intelligence is the route for new buyers, through HubSpot rather than Clearbit.

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.

Before you call either

Clearbit

  1. Don't plan to call Clearbit. Hand the task to a person with an existing Clearbit account, or use HubSpot's Breeze Intelligence through HubSpot
  2. Replace logo.clearbit.com links, which stopped working after 8 December 2025

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

Questions

Which is better for AI agents, Clearbit or Fuse MCP?

Fuse MCP scores 47.9 (D) on agent readiness against Clearbit's 13.5 (F), and leads in 6 of 7 scored categories. Clearbit leads on transparency & trust.

Do Clearbit and Fuse MCP need an API key?

Clearbit needs an API key. Fuse MCP uses an OAuth sign-in.

Can an agent call Clearbit and Fuse MCP without installing anything?

No hosted endpoint is listed for Clearbit. Fuse MCP has a hosted endpoint at https://mcp.fuseai.com.

Other comparisons with Clearbit or Fuse MCP

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