# Clearbit (HubSpot Breeze Intelligence)

**Canonical:** https://apis.io/providers/clearbit/  
**Website:** https://clearbit.com/  
**APIs profiled:** 9

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.

## Kin Score — 61.9 / 100 (strong)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 61.9).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 56.7 |
| Governance | 4.5 |
| Contract Governance | 4.5 |
| Operational Transparency | 92.1 |
| Developer Ergonomics | 52.4 |
| Commercial Clarity | 82.9 |
| Access Clarity | 82.9 |

## Agent readiness — 35.5 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | yes |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Free — onboarding: unknown, pricing: free, trial: no (confidence: high).

## APIs (9)

- **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...

## Security (4)

- **Clearbit Authentication** — 2 schemes
- **Clearbit Domain Security** — TLSv1.3 · HSTS · DMARC
- **Clearbit Vulnerability Disclosure** — Hackerone
- **Clearbit Trust Center** — trust center published

## Plans (1)

- **Clearbit Plans Pricing**

## Tags

Sales Intelligence, B2B, Enrichment, Reveal, HubSpot, Marketing, Data, Firmographics, Lead Enrichment, Company Data

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/clearbit/). Scores are computed from the provider's own public artifacts under a published rubric.