Clearbit (HubSpot Breeze Intelligence) website screenshot

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.

Clearbit (HubSpot Breeze Intelligence) publishes 9 APIs on the APIs.io network. Tagged areas include Sales Intelligence, B2B, Enrichment, Reveal, and HubSpot.

The Clearbit (HubSpot Breeze Intelligence) catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Clearbit (HubSpot Breeze Intelligence)’s developer surface includes documentation, API reference, support, engineering blog, pricing, authentication, changelog, and 27 more developer resources.

61.9/100 strong ▬ flat Agent 36/100 agent ready Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0
AccessFree⚡ Free to try
9 APIs
Sales IntelligenceB2BEnrichmentRevealHubSpotMarketingDataFirmographicsLead EnrichmentCompany Data

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0
Composite quality — 61.9/100 · strong
Contract Quality 14.2 / 25
Developer Ergonomics 10.5 / 20
Access Clarity 16.6 / 20
Operational Transparency 12.0 / 13
Contract Governance 0.5 / 12
Discoverability 8.2 / 10
Agent readiness — 36/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 10
Documented Reversibility 0 / 6
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 6 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/clearbit: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 9

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 for all 9

GraphQL 1

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...

GRAPHQL

Pricing Plans 1

Published pricing tiers and plan structures.

Rate Limits 1

Documented rate limits and quota policies.

Clearbit Rate Limits

9 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Security Posture 4

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Clearbit Authentication

2 schemes

SECURITY

Clearbit Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Clearbit Trust Center

trust center published

SECURITY

Resources

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 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

Source (apis.yml)

apis.yml Raw ↑
aid: clearbit
url: https://raw.githubusercontent.com/api-evangelist/clearbit/refs/heads/main/apis.yml
name: Clearbit (HubSpot Breeze Intelligence)
kind: company
description: 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.
accessModel:
  pricing: free
  onboarding: closed
  trial: false
  try_now: true
  public: false
  label: Free
  confidence: high
  source:
  - plans
  - probe
  generated: '2026-08-13'
  method: probed
  note: try_now is true only because the Autocomplete API answers anonymously (HTTP 200 verified 2026-08-13). onboarding is
    closed — Clearbit does not issue API keys to accounts created after 2023.
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/clearbit.png
tags:
- Sales Intelligence
- B2B
- Enrichment
- Reveal
- HubSpot
- Marketing
- Data
- Firmographics
- Lead Enrichment
- Company Data
created: '2026-05-08'
modified: '2026-08-13'
specificationVersion: '0.23'
apis:
- aid: clearbit:enrichment
  name: Clearbit Person Enrichment API
  description: '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. Verified live 2026-08-13 (HTTP 401 auth_required, x-api-version
    2019-12-19). May return 202 when the record is not warm in the index.'
  humanURL: https://dashboard.clearbit.com/docs
  baseURL: https://person.clearbit.com
  tags:
  - Enrichment
  - Persons
  - Company
  tags_raw:
  - Enrichment
  - Person
  - Company
  properties:
  - type: Documentation
    url: https://dashboard.clearbit.com/docs
  - type: APIReference
    url: https://clearbit.com/attributes
  - type: Authentication
    url: authentication/clearbit-authentication.yml
  - type: Conventions
    url: conventions/clearbit-conventions.yml
  - type: ErrorCatalog
    url: errors/clearbit-problem-types.yml
  - type: DataModel
    url: data-model/clearbit-data-model.yml
  - type: RateLimits
    url: rate-limits/clearbit-rate-limits.yml
- aid: clearbit:company-enrichment
  name: Clearbit Company Enrichment API
  description: '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 live 2026-08-13 (HTTP 401 auth_required, x-api-version
    2019-12-19, x-ratelimit-* headers present). Name to Domain is documented by the provider as a free legacy product that
    is unsupported.'
  humanURL: https://dashboard.clearbit.com/docs
  baseURL: https://company.clearbit.com
  tags:
  - Enrichment
  - Company
  - Firmographics
  - Name to Domain
  properties:
  - type: Documentation
    url: https://dashboard.clearbit.com/docs
  - type: APIReference
    url: https://clearbit.com/attributes
  - type: Authentication
    url: authentication/clearbit-authentication.yml
  - type: DataModel
    url: data-model/clearbit-data-model.yml
- aid: clearbit:enrichment-streaming
  name: Clearbit Streaming Enrichment API
  description: 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 "leads to slow Enrichment results" and excludes it from
    the documented 600 requests/minute limit. Verified live 2026-08-13 (HTTP 401 auth_required, x-api-version 2019-12-19).
  humanURL: https://help.clearbit.com/hc/en-us/articles/10065050209815-What-is-a-202-Status-Code
  baseURL: https://person-stream.clearbit.com
  tags:
  - Enrichment
  - Streaming
  - Long Polling
  properties:
  - type: Documentation
    url: https://help.clearbit.com/hc/en-us/articles/10065050209815-What-is-a-202-Status-Code
  - type: Conventions
    url: conventions/clearbit-conventions.yml
- aid: clearbit:reveal
  name: Clearbit Reveal API
  description: 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). Explicitly excluded from the documented 600 requests/minute limit,
    and emits no rate-limit headers, so its budget is neither documented nor observable.
  humanURL: https://dashboard.clearbit.com/docs#reveal-api
  baseURL: https://reveal.clearbit.com
  tags:
  - Reveal
  - IP
  - Company
  properties:
  - type: Documentation
    url: https://dashboard.clearbit.com/docs#reveal-api
  - type: Authentication
    url: authentication/clearbit-authentication.yml
- aid: clearbit:prospector
  name: Clearbit Prospector API
  description: 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-* headers present). Supports role/subRole search, location
    parameters and pagination.
  humanURL: https://dashboard.clearbit.com/docs#prospector-api
  baseURL: https://prospector.clearbit.com
  tags:
  - Prospecting
  - Search
  - People
  properties:
  - type: Documentation
    url: https://dashboard.clearbit.com/docs#prospector-api
  - type: Authentication
    url: authentication/clearbit-authentication.yml
- aid: clearbit:discovery
  name: Clearbit Discovery API
  description: 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 published rate limit and no rate-limit headers on response.
  humanURL: https://dashboard.clearbit.com/docs
  baseURL: https://discovery.clearbit.com
  tags:
  - Discovery
  - Search
  - Company
  - Target Market
  properties:
  - type: Documentation
    url: https://dashboard.clearbit.com/docs
  - type: Authentication
    url: authentication/clearbit-authentication.yml
- aid: clearbit:risk
  name: Clearbit Risk API
  description: 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 version on the estate). Documented by the provider as a
    free legacy product available only to existing customers and "unsupported at this time".
  humanURL: https://help.clearbit.com/hc/en-us/articles/8502992633111-Autocomplete-Name-to-Domain-and-Risk-API-FAQ
  baseURL: https://risk.clearbit.com
  tags:
  - Risk
  - Fraud
  - Email
  - Legacy
  properties:
  - type: Documentation
    url: https://help.clearbit.com/hc/en-us/articles/8502992633111-Autocomplete-Name-to-Domain-and-Risk-API-FAQ
  - type: Lifecycle
    url: lifecycle/clearbit-lifecycle.yml
- aid: clearbit:name-to-domain
  name: Clearbit Autocomplete API
  description: 'Free, unauthenticated company autocomplete: returns candidate companies (name, domain, logo) for a name fragment.
    Endpoint /v1/companies/suggest?query=. The only Clearbit endpoint that answers an anonymous caller — verified live 2026-08-13,
    HTTP 200, CORS-enabled, CloudFront-cached. The logo field has returned null since 2025-09-09 ahead of the Logo API sunset.
    The separate authenticated Name to Domain endpoint lives on company.clearbit.com.'
  humanURL: https://help.clearbit.com/hc/en-us/articles/8502992633111-Autocomplete-Name-to-Domain-and-Risk-API-FAQ
  baseURL: https://autocomplete.clearbit.com
  tags:
  - Autocomplete
  - Free
  - Company
  - Name to Domain
  properties:
  - type: Documentation
    url: https://help.clearbit.com/hc/en-us/articles/8502992633111-Autocomplete-Name-to-Domain-and-Risk-API-FAQ
  - type: RateLimits
    url: rate-limits/clearbit-rate-limits.yml
  - type: Plans
    url: plans/clearbit-plans-pricing.yml
- aid: clearbit:logo
  name: Clearbit Logo API (retired)
  description: '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 after a deliberate 24-hour warning outage on 2025-11-12. Verified
    2026-08-13: logo.clearbit.com no longer resolves (NXDOMAIN) — callers get a DNS failure, not a documented 410. Logos remain
    available to paying customers via the Company Enrichment API logo attribute; Clearbit recommends Logo.dev as the public
    alternative.'
  humanURL: https://clearbit.com/logo
  baseURL: https://logo.clearbit.com
  tags:
  - Logos
  - Free
  - Retired
  properties:
  - type: Documentation
    url: https://clearbit.com/logo
  - type: Deprecation
    url: https://clearbit.com/changelog
  - type: Lifecycle
    url: lifecycle/clearbit-lifecycle.yml
common:
- type: Website
  url: https://clearbit.com/
- type: DeveloperPortal
  url: https://dashboard.clearbit.com/docs
- type: Documentation
  url: https://help.clearbit.com/
- type: APIReference
  url: https://clearbit.com/attributes
- type: Support
  url: https://help.clearbit.com/
- type: Blog
  url: https://clearbit-blog.ghost.io/rss/
- type: GitHubOrganization
  url: https://github.com/clearbit
- type: LinkedIn
  url: https://www.linkedin.com/company/clearbit
- type: Pricing
  url: https://clearbit.com/pricing
- type: Login
  url: https://clearbit.com/login
- type: TermsOfService
  url: https://clearbit.com/legal
- type: PrivacyPolicy
  url: https://clearbit.com/privacy-policy
- type: Compliance
  url: https://clearbit.com/trust#compliance
- type: TrustCenter
  url: security/clearbit-trust-center.yml
- type: Security
  url: security/clearbit-vulnerability-disclosure.yml
- type: VulnerabilityDisclosure
  url: security/clearbit-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/clearbit-domain-security.yml
- type: Authentication
  url: authentication/clearbit-authentication.yml
- type: Conventions
  url: conventions/clearbit-conventions.yml
- type: ErrorCatalog
  url: errors/clearbit-problem-types.yml
- type: DataModel
  url: data-model/clearbit-data-model.yml
- type: Conformance
  url: conformance/clearbit-conformance.yml
- type: Lifecycle
  url: lifecycle/clearbit-lifecycle.yml
- type: StatusPage
  url: https://status.clearbit.com/
- type: Deprecation
  url: https://clearbit.com/changelog
- type: ChangeLog
  url: changelog/clearbit-changelog.yml
- type: Webhooks
  url: asyncapi/clearbit-webhooks.yml
- type: Packages
  url: packages/clearbit-packages.yml
- type: SDKs
  url: packages/clearbit-packages.yml
- type: Components
  url: components/clearbit-components.yml
- type: LLMsTxt
  url: llms/clearbit-llms.txt
- type: Plans
  url: plans/clearbit-plans-pricing.yml
- type: RateLimits
  url: rate-limits/clearbit-rate-limits.yml
- type: FinOps
  url: finops/clearbit-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-pointers-deliberately-absent:
  note: Recorded so a later round does not "fix" these by adding a pointer the provider has not earned. Each was probed on
    2026-08-13 and missed.
  MCPServer: No first-party MCP server. mcp/clearbit-mcp.yml is a derived candidate with deployment.mode none. The Zapier
    / viaSocket / Apify Clearbit MCP listings are third-party wrappers.
  AgentCard: /.well-known/agent-card.json and /.well-known/agent.json returned 404 on all eight hosts.
  WellKnown: 44 well-known paths probed across 8 hosts, zero hits. well-known/clearbit-well-known.yml records the absence.
  SecurityTxt: /.well-known/security.txt 404 on every host.
  Idempotency: No idempotency key, replay semantics or retention window is documented anywhere. Conventions records the absence
    explicitly.
  AgentSkill: No OpenAPI exists to ground real operationIds in, so no skill can be written without inventing operation identifiers.
  OpenAPI: No spec at any probed location on any host. See x-coverage.
  AsyncAPI: /asyncapi.yaml and /asyncapi.json 404 on every host. Two webhook surfaces are documented in prose only and carry
    the Webhooks pointer instead.
  GraphQL: REMOVED this round. The prior pointer at graphql/clearbit-graphql.md asserted a GraphQL API; that file is an API
    Evangelist conceptual translation of the REST surface, not a provider endpoint. A real but undocumented, fully auth-gated
    GraphQL endpoint was found behind the dashboard at https://app.clearbit.com/graphql and is recorded in graphql/clearbit-graphql-endpoint-probe.yml
    — it is not a published product and is not wired.
  Sandbox: No sandbox, test mode or test credentials are published.
  CLI: No first-party CLI in the github.com/clearbit organization or the docs.
  Postman: No first-party Clearbit-owned public Postman workspace or collection found.
  Roadmap: No public roadmap.
  SignUp: Login is wired instead. Sign-up for API access is closed — no new API keys since 2023 and free accounts sunset 2025-04-30.
x-coverage:
  state: covered
  detail: Enriched. Fifteen new artifacts plus four upgraded were searched, probed or derived from Clearbit's own published
    surfaces — the release notes, the Zendesk help centre, the attribute reference, the trust page, the public package registries,
    and live probes of all nine API hosts.
  checked: '2026-08-13'
x-contract-discovery:
  note: Recorded separately from x-coverage because the profile is NOT thin — it is thick, but no machine-readable contract
    exists behind it. STEP 0b was run in full before concluding this.
  machine_readable_spec: none
  detail: Clearbit's API reference at dashboard.clearbit.com/docs is a client-rendered React shell; its 31 lazy-loaded chunks
    were downloaded from cdn.clearbit.com and searched and contain no reference content. No OpenAPI, Swagger or AsyncAPI answers
    at any probed path on any of the nine live hosts. The ten APIs that answer on the wire have no published contract behind
    them.
  probed:
  - path_set:
    - /openapi.json
    - /openapi.yaml
    - /swagger.json
    - /v1/openapi.json
    - /api-docs
    - /redoc
    hosts: 10
    hits: 0
    note: app.clearbit.com returned HTTP 200 for every one of these — an SPA catch-all serving HTML, rejected as a false positive
      rather than saved.
  - path_set:
    - /asyncapi.yaml
    - /asyncapi.json
    hosts: 4
    hits: 0
  - path_set:
    - /.well-known/* (7 paths)
    hosts: 8
    hits: 0
  - path_set:
    - /graphql
    hosts: 3
    hits: 1
    note: app.clearbit.com/graphql is real but auth-gated and undocumented. See graphql/clearbit-graphql-endpoint-probe.yml.
  evidence:
  - url: https://dashboard.clearbit.com/docs
    status: 200
  - url: https://person.clearbit.com/openapi.json
    status: 404
  - url: https://person.clearbit.com/swagger.json
    status: 404
  - url: https://clearbit.com/openapi.json
    status: 404
  - url: https://person.clearbit.com/asyncapi.yaml
    status: 404
  - url: https://clearbit.com/.well-known/agent-card.json
    status: 404
  - url: https://app.clearbit.com/graphql
    status: 401
  - url: https://logo.clearbit.com/clearbit.com
    status: 0
  checked: '2026-08-13'
x-enrichment:
  date: '2026-08-13'
  status: enriched
  artifacts_added: 15
  pass: local-v1