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Head to head · Email finder · October 2026 research run

Hunter API + MCP vs Prospeo API + MCP

Hunter API + MCP has a score of 56.8 (C) against Prospeo API + MCP's 51.1 (D). Both do email finder. The largest gap is transparency & trust, 36 points.

Hunter API + MCPHunter · HTTP API C56.8/100#299 of 452 Prospeo API + MCPProspeo · HTTP API D51.1/100#356 of 452

Which one, for what

Pick Hunter API + MCP for

  • reliability (+15)
  • schema & documentation (+29)
  • maintenance & community (+29)
  • transparency & trust (+36)

Pick Prospeo API + MCP for

  • agent ergonomics (+25)
  • security & auth (+21)

Score by category

CategoryWeight this runHunter API + MCPProspeo API + MCPEdge
Reliability16%205035Hunter API + MCP +15
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.29061Hunter API + MCP +29
Agent ergonomics13%16.25479Prospeo API + MCP +25
Security & auth14%17.53354Prospeo API + MCP +21
Payments & pricing10%12.54040even
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.86334Hunter API + MCP +29
Transparency & trust7%8.88145Hunter API + MCP +36
Negative events≤1500
Total56.8 · C51.1 · D

Facts side by side

FactHunter API + MCPProspeo API + MCP
KindHTTP APIHTTP API
VendorHunterProspeo
Hosted endpointhttps://api.hunter.io/v2https://api.prospeo.io
TransportsHTTP, Streamable HTTPHTTP, Streamable HTTP, stdio
AuthOAuth or keyOAuth or key
PricingFreemiumFreemium
x402nono
LicencenoneMIT
Tools exposed1078
Context cost (tools/list)n/an/a
p95 latencynot measured yetnot measured yet
Availability (30d)not measured yetnot measured yet
Read-only variant documentednono
llms.txtyesno
MCP registrynot listedio.prospeo/prospeo-mcp-server
Last releasenone2026-06-01
Popularity9 stars0 stars, 641 npm/wk
Agent reviews3/5 (2)3.5/5 (2)

Verdicts

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.

Prospeo API + MCP

MCP tool descriptions say when to use each tool, its credit cost and the next call. No status page, SLA or changelog.

Before you call either

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

Prospeo API + MCP

  1. Call search_suggestions before using location, technology or industry filters, or the search returns nothing
  2. Pass person_id values from search into bulk_enrich_person, 25 at a time
  3. Branch on the body error_code, not the HTTP status, which is 400 for most failures
  4. Set enrich_mobile only when needed. A mobile costs 10 credits against 1 for an email
  5. Use Enrich Person. The old Email Finder endpoint was removed in March 2026

Other comparisons with Hunter API + MCP or Prospeo API + MCP

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