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Head to head · Lead enrichment · October 2026 research run

Clearbit vs RocketReach API

RocketReach API scores 51.2 (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 RocketReach APIRocketReach, LLC · HTTP API D51.2/100#805 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 58

Watch for

No public API or MCP server an outside agent can call

RocketReach API D

Best for Teams that already hold a RocketReach plan and want an agent to search people and companies, reveal emails and phones, and verify single addresses over MCP.

Ahead on

  • Reliability, 64 against 30
  • Schema & documentation, 72 against 0
  • Agent ergonomics, 72 against 0
  • Security & auth, 34 against 8
  • Payments & pricing, 10 against 0
  • Maintenance & community, 31 against 4

Also in its favour

  • A hosted endpoint, with nothing to install

Watch for

The pricing page is drawn by script and was not read, and the docs tell users without a paid plan to email for an API plan

Score by category

CategoryWeight this runClearbitRocketReach APIEdge
Reliability16%203064RocketReach API +34
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.2072RocketReach API +72
Agent ergonomics13%16.2072RocketReach API +72
Security & auth14%17.5834RocketReach API +26
Payments & pricing10%12.5010RocketReach API +10
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.8431RocketReach API +27
Transparency & trust7%8.86658Clearbit +8
Negative events≤1500
TotalF 13.5/100D 51.2/100

Facts side by side

FactClearbitRocketReach API
KindHTTP APIHTTP API
VendorHubSpot, Inc.RocketReach, LLC
Hosted endpointno (local only)https://api.rocketreach.co/api/v2
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 brandProprietary service under RocketReach's Terms of Service. The Python SDK on GitHub is MIT
Tools exposednone9
Read-only variant documentednono
llms.txtnoyes
Last release2025-12-08none
Terms last updated2025-05-302024-01-31
Privacy policy last updated2026-08-312026-09-30
Customer content may train modelsyesnot found in the text
Terms restrict automated accessnot found in the textyes
Terms restrict benchmarkingnot found in the textnot found in the text
Terms or service can change without noticenot found in the textyes
Arbitration or class-action waivernot found in the textyes

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.

RocketReach API

The hosted MCP server has nine documented tools, OAuth 2.1 with dynamic client registration and machine-readable error codes, and searches cost no credits. Plan prices were not readable, the docs send API plan requests to email, the terms require a human account holder, and the account tool returns the account's API key to the model.

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

RocketReach API

  1. Search first with person_search or company_search, which cost no credits, then look up only the profile IDs needed
  2. Treat status: "pending" as normal. Poll check_person_status after at least 3 seconds, and polling is free
  3. Do not echo the account tool's output to users or logs. It includes the account's API key
  4. Send the key in the Api-Key header. The api_key query parameter is deprecated
  5. Bulk lookup takes 1 to 100 queries and needs a webhook. Results arrive at the webhook, signed in X-RocketReach-Signature
  6. Do not loop on unknown from email_verify, or on lookup_failed and not_found. The last two are terminal

Questions

Which is better for AI agents, Clearbit or RocketReach API?

RocketReach API scores 51.2 (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 RocketReach API need an API key?

Clearbit needs an API key. RocketReach API takes an API key or an OAuth sign-in.

Can an agent call Clearbit and RocketReach API without installing anything?

No hosted endpoint is listed for Clearbit. RocketReach API has a hosted endpoint at https://api.rocketreach.co/api/v2.

Other comparisons with Clearbit or RocketReach API

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