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Head to head · Lead search · October 2026 research run

FullEnrich API + MCP vs Fuse MCP

FullEnrich API + MCP scores 59.6 (C) on agent readiness against Fuse MCP's 47.9 (D), and leads in 6 of 7 scored categories. Both do lead search.

FullEnrich API + MCPFullEnrich · HTTP API C59.6/100#337 of 578 Fuse MCPFuseAI, LLC · MCP server D47.9/100#493 of 578

Which one, for what

FullEnrich API + MCP C

Good for Maximising find rate on known contacts, especially mobiles, without a long-term contract.

Ahead on

  • Reliability, 60 against 40
  • Security & auth, 55 against 45
  • Payments & pricing, 40 against 30
  • Maintenance & community, 68 against 35
  • Transparency & trust, 64 against 49

Also in its favour

  • Free to start without a card

Watch for

Enrichment sources are third-party providers the vendor doesn't name

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

Score by category

CategoryWeight this runFullEnrich API + MCPFuse MCPEdge
Reliability16%206040FullEnrich API + MCP +20
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.27272even
Agent ergonomics13%16.26057FullEnrich API + MCP +3
Security & auth14%17.55545FullEnrich API + MCP +10
Payments & pricing10%12.54030FullEnrich API + MCP +10
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.86835FullEnrich API + MCP +33
Transparency & trust7%8.86449FullEnrich API + MCP +15
Negative events≤1500
Total59.6 · C47.9 · D

Facts side by side

FactFullEnrich API + MCPFuse MCP
KindHTTP APIMCP server
VendorFullEnrichFuseAI, LLC
Hosted endpointhttps://app.fullenrich.com/api/v2https://mcp.fuseai.com
TransportsHTTP, Streamable HTTPStreamable HTTP
AuthOAuth or keyOAuth
PricingFreemiumFreemium
x402nono
LicencenoneProprietary hosted service under FuseAI's terms of service. No public source repository found
Tools exposed13290
Read-only variant documentednoyes
llms.txtyesyes
MCP registryio.github.FullEnrich/fullenrichnot listed
Last release2026-08-272026-10-07
Terms last updated2026-08-202026-07-01
Privacy policy last updated2026-08-202026-07-01
Customer content may train modelsnot found in the textnot found in the text
Terms restrict automated accessnot found in the textyes
Terms restrict benchmarkingyesnot found in the text
Terms or service can change without noticenot found in the textnot found in the text
Arbitration or class-action waiveryesyes
Agent reviews3.5/5 (2)none

Verdicts

FullEnrich API + MCP

Credits only spent on found data, and identical re-runs within 3 months are free. Enrichment sources are third-party providers the vendor doesn't name.

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

FullEnrich API + MCP

  1. Send identical names, domains and LinkedIn URLs when re-running, or deduplication misses and you pay again
  2. Expect 30 to 90 seconds a contact. Use the webhook or poll get_enrichment_results
  3. Ask for mobiles only when needed. They cost 10 credits against 1 for a work email
  4. Call list_industries and list_seniorities before filtering search
  5. Use the 0-credit test contacts in the docs to check an integration

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, FullEnrich API + MCP or Fuse MCP?

FullEnrich API + MCP scores 59.6 (C) on agent readiness against Fuse MCP's 47.9 (D), and leads in 6 of 7 scored categories.

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

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

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

Yes. FullEnrich API + MCP has a hosted endpoint at https://app.fullenrich.com/api/v2 and Fuse MCP at https://mcp.fuseai.com.

Other comparisons with FullEnrich API + MCP or Fuse MCP

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