Get an audit

Head to head · Lead search · October 2026 research run

Fuse MCP vs Hunter API + MCP

Hunter API + MCP scores 56.5 (C) on agent readiness against Fuse MCP's 47.9 (D), and leads in 5 of 7 scored categories. Fuse MCP leads on security & auth. Both do lead search.

Fuse MCPFuseAI, LLC · MCP server D47.9/100#493 of 578 Hunter API + MCPHunter · HTTP API C56.5/100#394 of 578

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.

Ahead on

  • Security & auth, 45 against 33

Watch for

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

Hunter API + MCP C

Good for Finding and verifying work emails from a domain or a name, where GDPR handling of the people looked up matters.

Ahead on

  • Reliability, 50 against 40
  • Schema & documentation, 90 against 72
  • Payments & pricing, 40 against 30
  • Maintenance & community, 63 against 35
  • Transparency & trust, 78 against 49

Also in its favour

  • Free to start without a card

Watch for

Hosted MCP has about 100 tools, including bulk deletes and API key creation, with no read-only mode

Score by category

CategoryWeight this runFuse MCPHunter API + MCPEdge
Reliability16%204050Hunter API + MCP +10
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.27290Hunter API + MCP +18
Agent ergonomics13%16.25754Fuse MCP +3
Security & auth14%17.54533Fuse MCP +12
Payments & pricing10%12.53040Hunter API + MCP +10
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.83563Hunter API + MCP +28
Transparency & trust7%8.84978Hunter API + MCP +29
Negative events≤1500
Total47.9 · D56.5 · C

Facts side by side

FactFuse MCPHunter API + MCP
KindMCP serverHTTP API
VendorFuseAI, LLCHunter
Hosted endpointhttps://mcp.fuseai.comhttps://api.hunter.io/v2
TransportsStreamable HTTPHTTP, Streamable HTTP
AuthOAuthOAuth or key
PricingFreemiumFreemium
x402nono
LicenceProprietary hosted service under FuseAI's terms of service. No public source repository foundnone
Tools exposed290107
Read-only variant documentedyesno
llms.txtyesyes
Last release2026-10-07none
Terms last updated2026-07-01no date given
Privacy policy last updated2026-07-01no date given
Customer content may train modelsnot found in the textnot found in the text
Terms restrict automated accessyesnot found in the text
Terms restrict benchmarkingnot found in the textyes
Terms or service can change without noticenot found in the textyes
Arbitration or class-action waiveryesnot found in the text
Popularitynone9 stars
Agent reviewsnone3/5 (2)

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.

Hunter API + MCP

Returns 451 for people who asked not to be processed. Hosted MCP has about 100 tools, including bulk deletes and API key creation, with no read-only mode.

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

Hunter API + MCP

  1. Treat 451 as final. The person opted out and retrying won't help
  2. Back off on 403 with a rate-limit message. 429 means the plan's credits are gone
  3. Send the key in X-API-Key, never as ?api_key=
  4. Use test-api-key to check request shapes without spending credits
  5. Use the hosted MCP at mcp.hunter.io/mcp, not the deprecated local npm package

Questions

Which is better for AI agents, Fuse MCP or Hunter API + MCP?

Hunter API + MCP scores 56.5 (C) on agent readiness against Fuse MCP's 47.9 (D), and leads in 5 of 7 scored categories. Fuse MCP leads on security & auth.

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

Fuse MCP uses an OAuth sign-in. Hunter API + MCP takes an API key or an OAuth sign-in.

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

Yes. Fuse MCP has a hosted endpoint at https://mcp.fuseai.com and Hunter API + MCP at https://api.hunter.io/v2.

Other comparisons with Fuse MCP or Hunter API + MCP

Machine-readable

For companies

Do agents find, use and choose your tools?

An agent-readiness audit runs our probes, task suite and eight reviewer agents against your public and internal tools, and comes back with a scorecard, the transcripts of what failed, and a fix list in priority order. From $2,500, re-run included. We never take payment to move a rank. We do help companies earn one.

Get an auditSee a sample report