Clearbit (HubSpot Breeze Intelligence)
Clearbit is a B2B marketing and sales intelligence platform whose REST APIs resolve an email address to a person, a domain to a company, and an IP address to the business behind it, returning firmographic, technographic and persona data across a documented 100+ company and 60+ person attributes classified against GICS, SIC and NAICS. HubSpot acquired Clearbit in December 2023 and sells the capability as HubSpot Breeze Intelligence. The legacy Clearbit APIs (Enrichment, Streaming, Reveal, Prospector, Discovery, Risk, Name-to-Domain, Autocomplete) remain live and answer on their production hosts, but the provider is in publicly dated wind-down — new API keys have not been issued since 2023, free accounts were sunset 2025-04-30, and the free Logo API was sunset 2025-12-08 and its host no longer resolves. Only the free Autocomplete API is callable without a credential.
Solid contracts, transparent operations, and an easy start — typically complete on four or five facets with one clear soft spot.
API Evangelist profiles Clearbit (HubSpot Breeze Intelligence) the way a machine reads it — 18 machine-readable artifacts across 9 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Clearbit (HubSpot Breeze Intelligence) scores 60.3/100 (strong), with a separate agent-readiness read of 25/100 (agent aware). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-10 · rubric v0.20.0
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How we profile Clearbit (HubSpot Breeze Intelligence)
Each block below is one kind of artifact we hold for Clearbit (HubSpot Breeze Intelligence). For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 9
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
Clearbit Person Enrichment API
Person enrichment from an email address, plus the Combined lookup that returns the person and their company in one response. Endpoints: /v2/people/find, /v2/combined/find. Verif...
Clearbit Company Enrichment API
Company enrichment from a domain, and the Name to Domain lookup that resolves a company name to its primary domain. Endpoints: /v2/companies/find, /v1/domains/find. Verified liv...
Clearbit Streaming Enrichment API
The same enrichment contract served from a streaming host that holds the connection open for up to 60 seconds so a queued (202) lookup resolves in-band. The provider warns it "l...
Clearbit Reveal API
De-anonymizes website visitors by IP address, returning company firmographics for B2B traffic. Endpoint /v1/companies/find?ip=. Verified live 2026-08-13 (HTTP 401 auth_required)...
Clearbit Prospector API
Search for people matching firmographic and persona filters. Endpoint /v1/people/search. Verified live 2026-08-13 (HTTP 401 auth_required, x-api-version 2018-11-16, x-ratelimit-...
Clearbit Discovery API
Search Clearbit's company database with a structured query to build target-market lists. Endpoint /v1/companies/search. Verified live 2026-08-13 (HTTP 401 auth_required). No pub...
Clearbit Risk API
Scores an email address for fraud and abuse risk. Endpoint /v1/calculate?email=. Verified live 2026-08-13 (HTTP 401 auth_required, x-api-version 2016-05-03 — the oldest dated ve...
Clearbit Autocomplete API
Free, unauthenticated company autocomplete: returns candidate companies (name, domain, logo) for a name fragment. Endpoint /v1/companies/suggest?query=. The only Clearbit endpoi...
Clearbit Logo API (retired)
RETIRED 2025-12-08. The free Logo API returned a company logo image for a domain with no authentication. Announced 2025-02-13, moved to 2025-12-01, then final on 2025-12-08 afte...
Scroll within the panel for all 9 ·
GraphQL 1
Where a provider ships GraphQL, the schema is the contract. We profile it alongside the REST surface so the whole interface is legible in one place.
GraphQL schemas published by this provider.
Clearbit GraphQL Schema
This directory contains a conceptual GraphQL schema for the Clearbit (now HubSpot Breeze Intelligence) B2B data enrichment and intelligence platform. Clearbit provided REST APIs...
GRAPHQLPricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the things the Kin Score reads for access clarity — renamed from commercial clarity in rubric 0.12, because a free statutory interface has access terms and no commercial ones.
Published pricing tiers and plan structures.
Rate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Clearbit Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.
Cost, billing, and metering signals for API financial operations.
Clearbit Finops
FINOPSEvent Specifications 1
Not every API is request/response. AsyncAPI describes the event-driven and streaming side — the webhooks and channels — so the asynchronous half of the interface is documented the same way the synchronous half is.
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Clearbit Webhooks
ASYNCAPISecurity Posture 4
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Resources
Every other property we hold for Clearbit (HubSpot Breeze Intelligence) — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 2
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 7
Pagination, idempotency, versioning, errors, and events
Scroll within the panel for all 7 ·
Build 3
SDKs, sample code, and the tooling you integrate with
Access & Security 6
Authentication, authorization, and security posture
Operate 5
Status, limits, changes, and where to get help
Commercial 5
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
← All providers · Data indexed from github.com/api-evangelist/clearbit · machine-readable index on apis.io
This is an independent, third-party profile of Clearbit (HubSpot Breeze Intelligence), published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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