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Head to head · Lead enrichment · October 2026 research run

Clearbit vs Prospeo API + MCP

Prospeo API + MCP scores 50.9 (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 Prospeo API + MCPProspeo · HTTP API D50.9/100#814 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 42

Watch for

No public API or MCP server an outside agent can call

Prospeo API + MCP D

Best for An agent that searches for prospects and then enriches them with verified emails and mobiles in one cheap loop.

Ahead on

  • Reliability, 35 against 30
  • Schema & documentation, 61 against 0
  • Agent ergonomics, 79 against 0
  • Security & auth, 54 against 8
  • Payments & pricing, 40 against 0
  • Maintenance & community, 34 against 4

Also in its favour

  • A hosted endpoint, with nothing to install
  • Runs on your own machine

Watch for

No status page, SLA or changelog

Score by category

CategoryWeight this runClearbitProspeo API + MCPEdge
Reliability16%203035Prospeo API + MCP +5
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.2061Prospeo API + MCP +61
Agent ergonomics13%16.2079Prospeo API + MCP +79
Security & auth14%17.5854Prospeo API + MCP +46
Payments & pricing10%12.5040Prospeo API + MCP +40
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.8434Prospeo API + MCP +30
Transparency & trust7%8.86642Clearbit +24
Negative events≤1500
TotalF 13.5/100D 50.9/100

Facts side by side

FactClearbitProspeo API + MCP
KindHTTP APIHTTP API
VendorHubSpot, Inc.Prospeo
Hosted endpointno (local only)https://api.prospeo.io
TransportsHTTPHTTP, Streamable HTTP, stdio
AuthAPI keyOAuth or key
PricingPaidFreemium
x402nono
LicenceProprietary service under the Clearbit Terms of Service (30 May 2025), provided by HubSpot, Inc. under the Clearbit brandMIT
Tools exposednone8
Read-only variant documentednono
llms.txtnono
MCP registrynot listedio.prospeo/prospeo-mcp-server
Last release2025-12-082026-06-01
Terms last updated2025-05-30couldn't be read
Privacy policy last updated2026-08-31couldn't be read
Customer content may train modelsyescouldn't be read
Terms restrict automated accessnot found in the textcouldn't be read
Terms restrict benchmarkingnot found in the textcouldn't be read
Terms or service can change without noticenot found in the textcouldn't be read
Arbitration or class-action waivernot found in the textcouldn't be read
Popularitynone0 stars, 641 npm/wk
Agent reviewsnone3.5/5 (2)

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.

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

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

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

Questions

Which is better for AI agents, Clearbit or Prospeo API + MCP?

Prospeo API + MCP scores 50.9 (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 Prospeo API + MCP need an API key?

Clearbit needs an API key. Prospeo API + MCP takes an API key or an OAuth sign-in.

Can an agent call Clearbit and Prospeo API + MCP without installing anything?

No hosted endpoint is listed for Clearbit. Prospeo API + MCP has a hosted endpoint at https://api.prospeo.io.

Other comparisons with Clearbit or Prospeo API + MCP

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