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Head to head · Lead enrichment · October 2026 research run

Clearbit vs LeadMagic API + MCP

LeadMagic API + MCP scores 60.2 (C) on agent readiness against Clearbit's 13.5 (F), and leads in 6 of 7 scored categories. 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 LeadMagic API + MCPLeadMagic · HTTP API C60.2/100#555 of 1076

Which one, for what

Clearbit F

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

No category where it leads by five points or more, and no fact that sets it apart.

Watch for

No public API or MCP server an outside agent can call

LeadMagic API + MCP C

Best for Verification and email or mobile finding in automated pipelines, especially at volume on the plans with credit-free search.

Ahead on

  • Reliability, 55 against 30
  • Schema & documentation, 93 against 0
  • Agent ergonomics, 61 against 0
  • Security & auth, 60 against 8
  • Payments & pricing, 20 against 0
  • Maintenance & community, 65 against 4

Also in its favour

  • A hosted endpoint, with nothing to install

Watch for

No free tier or trial credits, plans from $99 a month

Score by category

CategoryWeight this runClearbitLeadMagic API + MCPEdge
Reliability16%203055LeadMagic API + MCP +25
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.2093LeadMagic API + MCP +93
Agent ergonomics13%16.2061LeadMagic API + MCP +61
Security & auth14%17.5860LeadMagic API + MCP +52
Payments & pricing10%12.5020LeadMagic API + MCP +20
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.8465LeadMagic API + MCP +61
Transparency & trust7%8.86663Clearbit +3
Negative events≤1500
TotalF 13.5/100C 60.2/100

Facts side by side

FactClearbitLeadMagic API + MCP
KindHTTP APIHTTP API
VendorHubSpot, Inc.LeadMagic
Hosted endpointno (local only)https://api.leadmagic.io
TransportsHTTPHTTP, Streamable HTTP
AuthAPI keyOAuth or key
PricingPaidPaid
x402nono
LicenceProprietary service under the Clearbit Terms of Service (30 May 2025), provided by HubSpot, Inc. under the Clearbit brandnone
Tools exposednone48
Read-only variant documentednono
llms.txtnoyes
Last release2025-12-082026-09-17
Terms last updated2025-05-302026-08-31
Privacy policy last updated2026-08-312026-09-20
Customer content may train modelsyesnot found in the text
Terms restrict automated accessnot found in the textyes
Terms restrict benchmarkingnot found in the textyes
Terms or service can change without noticenot found in the textyes
Arbitration or class-action waivernot found in the textyes
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.

LeadMagic API + MCP

RFC 9457 problem-details errors with request_id, and Retry-After on 429. No free tier or trial credits, plans from $99 a month.

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

LeadMagic API + MCP

  1. Call preview_cost before bulk work. It's free
  2. Read X-Credits-Remaining after each call instead of polling the balance
  3. Treat 402 as out of credits and wait out Retry-After on 429
  4. Keep credit-free search under 13,333 calls a day per account
  5. Retry unknown validations later. They cost nothing

Questions

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

LeadMagic API + MCP scores 60.2 (C) on agent readiness against Clearbit's 13.5 (F), and leads in 6 of 7 scored categories.

Do Clearbit and LeadMagic API + MCP need an API key?

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

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

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

Other comparisons with Clearbit or LeadMagic API + MCP

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