The Companies API

The Companies API is a company data and enrichment platform offering programmatic access to firmographic, technographic, and web-intelligence data on 50M+ companies. Its REST API (base https://api.thecompaniesapi.com, all resources under /v2) covers company search and segmentation, company enrichment by domain, email, or social profile, similar-company lookup, industry and technology reference data, location reference data, saved lists, and asynchronous bulk actions. Requests are authenticated with an API token passed in the Authorization header, billing is credit-based, and the full OpenAPI 3.1 description is published at /v2/openapi.

The Companies API publishes 12 APIs on the APIs.io network, including actions API, analytics API, companies API, and 9 more. Tagged areas include Company Data, Data Enrichment, Firmographics, Web Intelligence, and B2B Data.

The The Companies API catalog on APIs.io includes 1 event-driven AsyncAPI specification.

The Companies API’s developer surface includes authentication, documentation, changelog, API reference, getting-started guide, support, pricing, and 26 more developer resources.

🌐 Visit website 📡 Source on GitHub

62.2/100 strong ▬ flat Agent 28/100 agent aware saas Full breakdown ↓
scored 2026-09-06 · rubric v0.19.0

AccessFreemiumOpen⚡ Free to try

1 APIs

Company Data Data Enrichment Firmographics Web Intelligence B2B Data Reference Data Company Search

Kin Score

Kin Score How this is scored →
scored 2026-09-06 · rubric v0.19.0

Composite quality — 62.2/100 · strong

Contract Quality 15.5 / 25

Developer Ergonomics 12.7 / 20

Access Clarity 15.5 / 20

Operational Transparency 10.3 / 13

Contract Governance 0.5 / 12

Discoverability 7.6 / 10

Agent readiness — 28/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 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 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/thecompaniesapi: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 12

Individual APIs this provider publishes, each with its own machine-readable definition.

Open Collections 14

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Rate Limits 1

Documented rate limits and quota policies.

Thecompaniesapi Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LLMsTxt

LLMsTxt

AgentSkill

AgentSkill

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conformance

ErrorCatalog

Lifecycle

Conventions

DataModel

Webhooks

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

Packages

SDKs

Collection

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 6

Status, limits, changes, and where to get help

RateLimits

StatusPage

ChangeLog

Roadmap

Support

HelpCenter

Commercial 5

Pricing, plans, and the legal terms of use

Plans

FinOps

Pricing

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

LinkedIn

Website

Website

Source (apis.yml)

aid: thecompaniesapi
url: https://raw.githubusercontent.com/api-evangelist/thecompaniesapi/refs/heads/main/apis.yml
name: The Companies API
kind: company
description: The Companies API is a company data and enrichment platform offering programmatic access to firmographic, technographic,
  and web-intelligence data on 50M+ companies. Its REST API (base https://api.thecompaniesapi.com, all resources under /v2)
  covers company search and segmentation, company enrichment by domain, email, or social profile, similar-company lookup,
  industry and technology reference data, location reference data, saved lists, and asynchronous bulk actions. Requests are
  authenticated with an API token passed in the Authorization header, billing is credit-based, and the full OpenAPI 3.1 description
  is published at /v2/openapi.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: open
  trial: false
  try_now: true
  public: true
  label: Freemium · Open access
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/thecompaniesapi.png
tags:
- Company Data
- Data Enrichment
- Firmographics
- Web Intelligence
- B2B Data
- Reference Data
- Company Search
created: '2026-07-11'
modified: '2026-08-14'
specificationVersion: '0.23'
apis:
- aid: thecompaniesapi:thecompaniesapi-actions-api
  name: The Companies API actions API
  description: The actions API from The Companies API — 2 operation(s) for actions.
  humanURL: https://www.thecompaniesapi.com/api
  baseURL: https://api.thecompaniesapi.com/v2
  tags:
  - Actions
  tags_raw:
  - actions
  properties:
  - type: OpenAPI
    url: openapi/thecompaniesapi-actions-api-openapi.yml
  - type: Documentation
    url: https://www.thecompaniesapi.com/api
  - type: APIReference
    url: https://www.thecompaniesapi.com/api
  - type: Overlay
    url: overlays/thecompaniesapi-actions-api-overlay.yaml
- aid: thecompaniesapi:thecompaniesapi-analytics-api
  name: The Companies API analytics API
  description: The analytics API from The Companies API — 2 operation(s) for analytics.
  humanURL: https://www.thecompaniesapi.com/api
  baseURL: https://api.thecompaniesapi.com/v2
  tags:
  - Analytics
  tags_raw:
  - analytics
  properties:
  - type: OpenAPI
    url: openapi/thecompaniesapi-analytics-api-openapi.yml
  - type: Documentation
    url: https://www.thecompaniesapi.com/api
  - type: APIReference
    url: https://www.thecompaniesapi.com/api
  - type: Overlay
    url: overlays/thecompaniesapi-analytics-api-overlay.yaml
- aid: thecompaniesapi:thecompaniesapi-companies-api
  name: The Companies API companies API
  description: The companies API from The Companies API — 13 operation(s) for companies.
  humanURL: https://www.thecompaniesapi.com/api
  baseURL: https://api.thecompaniesapi.com/v2
  tags:
  - Companies
  tags_raw:
  - companies
  properties:
  - type: OpenAPI
    url: openapi/thecompaniesapi-companies-api-openapi.yml
  - type: Documentation
    url: https://www.thecompaniesapi.com/api
  - type: APIReference
    url: https://www.thecompaniesapi.com/api
  - type: Overlay
    url: overlays/thecompaniesapi-companies-api-overlay.yaml
- aid: thecompaniesapi:thecompaniesapi-industries-api
  name: The Companies API industries API
  description: The industries API from The Companies API — 2 operation(s) for industries.
  humanURL: https://www.thecompaniesapi.com/api
  baseURL: https://api.thecompaniesapi.com/v2
  tags:
  - Industries
  tags_raw:
  - industries
  properties:
  - type: OpenAPI
    url: openapi/thecompaniesapi-industries-api-openapi.yml
  - type: Documentation
    url: https://www.thecompaniesapi.com/api
  - type: APIReference
    url: https://www.thecompaniesapi.com/api
  - type: Overlay
    url: overlays/thecompaniesapi-industries-api-overlay.yaml
- aid: thecompaniesapi:thecompaniesapi-job-titles-api
  name: The Companies API job-titles API
  description: The job-titles API from The Companies API — 1 operation(s) for job-titles.
  humanURL: https://www.thecompaniesapi.com/api
  baseURL: https://api.thecompaniesapi.com/v2
  tags:
  - Job Titles
  tags_raw:
  - job-titles
  properties:
  - type: OpenAPI
    url: openapi/thecompaniesapi-job-titles-api-openapi.yml
  - type: Documentation
    url: https://www.thecompaniesapi.com/api
  - type: APIReference
    url: https://www.thecompaniesapi.com/api
  - type: Overlay
    url: overlays/thecompaniesapi-job-titles-api-overlay.yaml
- aid: thecompaniesapi:thecompaniesapi-lists-api
  name: The Companies API lists API
  description: The lists API from The Companies API — 5 operation(s) for lists.
  humanURL: https://www.thecompaniesapi.com/api
  baseURL: https://api.thecompaniesapi.com/v2
  tags:
  - List
  tags_raw:
  - lists
  properties:
  - type: OpenAPI
    url: openapi/thecompaniesapi-lists-api-openapi.yml
  - type: Documentation
    url: https://www.thecompaniesapi.com/api
  - type: APIReference
    url: https://www.thecompaniesapi.com/api
  - type: Overlay
    url: overlays/thecompaniesapi-lists-api-overlay.yaml
- aid: thecompaniesapi:thecompaniesapi-locations-api
  name: The Companies API locations API
  description: The locations API from The Companies API — 5 operation(s) for locations.
  humanURL: https://www.thecompaniesapi.com/api
  baseURL: https://api.thecompaniesapi.com/v2
  tags:
  - Locations
  tags_raw:
  - locations
  properties:
  - type: OpenAPI
    url: openapi/thecompaniesapi-locations-api-openapi.yml
  - type: Documentation
    url: https://www.thecompaniesapi.com/api
  - type: APIReference
    url: https://www.thecompaniesapi.com/api
  - type: Overlay
    url: overlays/thecompaniesapi-locations-api-overlay.yaml
- aid: thecompaniesapi:thecompaniesapi-prompts-api
  name: The Companies API prompts API
  description: The prompts API from The Companies API — 4 operation(s) for prompts.
  humanURL: https://www.thecompaniesapi.com/api
  baseURL: https://api.thecompaniesapi.com/v2
  tags:
  - Prompts
  tags_raw:
  - prompts
  properties:
  - type: OpenAPI
    url: openapi/thecompaniesapi-prompts-api-openapi.yml
  - type: Documentation
    url: https://www.thecompaniesapi.com/api
  - type: APIReference
    url: https://www.thecompaniesapi.com/api
  - type: Overlay
    url: overlays/thecompaniesapi-prompts-api-overlay.yaml
- aid: thecompaniesapi:thecompaniesapi-teams-api
  name: The Companies API teams API
  description: The teams API from The Companies API — 1 operation(s) for teams.
  humanURL: https://www.thecompaniesapi.com/api
  baseURL: https://api.thecompaniesapi.com/v2
  tags:
  - Team
  tags_raw:
  - teams
  properties:
  - type: OpenAPI
    url: openapi/thecompaniesapi-teams-api-openapi.yml
  - type: Documentation
    url: https://www.thecompaniesapi.com/api
  - type: APIReference
    url: https://www.thecompaniesapi.com/api
  - type: Overlay
    url: overlays/thecompaniesapi-teams-api-overlay.yaml
- aid: thecompaniesapi:thecompaniesapi-technologies-api
  name: The Companies API technologies API
  description: The technologies API from The Companies API — 1 operation(s) for technologies.
  humanURL: https://www.thecompaniesapi.com/api
  baseURL: https://api.thecompaniesapi.com/v2
  tags:
  - technologies
  properties:
  - type: OpenAPI
    url: openapi/thecompaniesapi-technologies-api-openapi.yml
  - type: Documentation
    url: https://www.thecompaniesapi.com/api
  - type: APIReference
    url: https://www.thecompaniesapi.com/api
  - type: Overlay
    url: overlays/thecompaniesapi-technologies-api-overlay.yaml
- aid: thecompaniesapi:thecompaniesapi-users-api
  name: The Companies API users API
  description: The users API from The Companies API — 1 operation(s) for users.
  humanURL: https://www.thecompaniesapi.com/api
  baseURL: https://api.thecompaniesapi.com/v2
  tags:
  - User
  tags_raw:
  - users
  properties:
  - type: OpenAPI
    url: openapi/thecompaniesapi-users-api-openapi.yml
  - type: Documentation
    url: https://www.thecompaniesapi.com/api
  - type: APIReference
    url: https://www.thecompaniesapi.com/api
  - type: Overlay
    url: overlays/thecompaniesapi-users-api-overlay.yaml
- aid: thecompaniesapi:thecompaniesapi-utilities-api
  name: The Companies API utilities API
  description: The utilities API from The Companies API — 2 operation(s) for utilities.
  humanURL: https://www.thecompaniesapi.com/api
  baseURL: https://api.thecompaniesapi.com/v2
  tags:
  - Utilities
  tags_raw:
  - utilities
  properties:
  - type: OpenAPI
    url: openapi/thecompaniesapi-utilities-api-openapi.yml
  - type: Documentation
    url: https://www.thecompaniesapi.com/api
  - type: APIReference
    url: https://www.thecompaniesapi.com/api
  - type: Overlay
    url: overlays/thecompaniesapi-utilities-api-overlay.yaml
common:
- type: DomainSecurity
  url: security/thecompaniesapi-domain-security.yml
- type: AgenticAccess
  url: agentic-access/thecompaniesapi-agentic-access.yml
- type: Authentication
  url: authentication/thecompaniesapi-authentication.yml
- type: GitHubOrganization
  url: https://github.com/thecompaniesapi
- type: LinkedIn
  url: https://www.linkedin.com/company/thecompaniesapi
- type: Website
  url: https://www.thecompaniesapi.com
- type: Documentation
  url: https://www.thecompaniesapi.com/api
- type: Plans
  url: plans/thecompaniesapi-plans-pricing.yml
- type: RateLimits
  url: rate-limits/thecompaniesapi-rate-limits.yml
- type: FinOps
  url: finops/thecompaniesapi-finops.yml
- type: Packages
  url: packages/thecompaniesapi-packages.yml
- type: SDKs
  url: packages/thecompaniesapi-packages.yml
- type: LLMsTxt
  url: llms/thecompaniesapi-llms.txt
- type: Conformance
  url: conformance/thecompaniesapi-conformance.yml
- type: ErrorCatalog
  url: errors/thecompaniesapi-problem-types.yml
- type: Lifecycle
  url: lifecycle/thecompaniesapi-lifecycle.yml
- type: StatusPage
  url: https://status.thecompaniesapi.com/en/
- type: Conventions
  url: conventions/thecompaniesapi-conventions.yml
- type: ChangeLog
  url: changelog/thecompaniesapi-changelog.yml
- type: DataModel
  url: data-model/thecompaniesapi-data-model.yml
- type: Webhooks
  url: asyncapi/thecompaniesapi-webhooks.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Roadmap
  url: https://updates.thecompaniesapi.com/roadmap
- type: DeveloperPortal
  url: https://www.thecompaniesapi.com/api
- type: APIReference
  url: https://www.thecompaniesapi.com/api
- type: GettingStarted
  url: https://www.thecompaniesapi.com/api
- type: Support
  url: mailto:support@thecompaniesapi.com
- type: HelpCenter
  url: https://www.thecompaniesapi.com/product/faq
- type: Pricing
  url: https://www.thecompaniesapi.com/pricing
- type: Login
  url: https://www.thecompaniesapi.com/auth/login
- type: TermsOfService
  url: https://www.thecompaniesapi.com/product/terms
- type: PrivacyPolicy
  url: https://www.thecompaniesapi.com/product/privacy
- type: Collection
  url: collections/thecompaniesapi.opencollection.json
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-enrichment:
  date: '2026-08-14'
  status: enriched
  artifacts_added: 30
  pass: local-v1

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