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 Companies API’s developer surface includes authentication, documentation, and 7 more developer resources.

🌐 Visit website 📡 Source on GitHub
40.0/100 thin ▬ flat Agent 48/100 agent ready Full breakdown ↓
scored 2026-07-27 · rubric v0.5
AccessFreemiumOpen⚡ Free to try
12 APIs
Company DataData EnrichmentFirmographicsWeb IntelligenceB2B DataReference DataCompany Search

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 40.0/100 · thin
Contract Quality 13.4 / 25
Developer Ergonomics 3.9 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 4.8 / 13
Governance 0.0 / 12
Discoverability 10.0 / 10
Agent readiness — 48/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
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/thecompaniesapi: 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 12

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

The Companies API actions API

The actions API from The Companies API — 2 operation(s) for actions.

The Companies API analytics API

The analytics API from The Companies API — 2 operation(s) for analytics.

The Companies API companies API

The companies API from The Companies API — 13 operation(s) for companies.

The Companies API industries API

The industries API from The Companies API — 2 operation(s) for industries.

The Companies API job-titles API

The job-titles API from The Companies API — 1 operation(s) for job-titles.

The Companies API lists API

The lists API from The Companies API — 5 operation(s) for lists.

The Companies API locations API

The locations API from The Companies API — 5 operation(s) for locations.

The Companies API prompts API

The prompts API from The Companies API — 4 operation(s) for prompts.

The Companies API teams API

The teams API from The Companies API — 1 operation(s) for teams.

The Companies API technologies API

The technologies API from The Companies API — 1 operation(s) for technologies.

The Companies API users API

The users API from The Companies API — 1 operation(s) for users.

The Companies API utilities API

The utilities API from The Companies API — 2 operation(s) for utilities.

Scroll for all 12

Open Collections 1

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

The Companies API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Thecompaniesapi Plans Pricing

4 plans

PLANS

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.

Thecompaniesapi Finops

FINOPS

Security Posture 1

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

Thecompaniesapi Authentication

http · 1 scheme

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Thecompaniesapi Agentic Access

44 operations · 15 acting

44 operations · 15 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

Authentication
Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits
RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans
Plans
 FinOps
FinOps

Company 2

The organization behind the API

LinkedIn
LinkedIn
 Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
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.
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: '2026-07-11'
specificationVersion: '0.19'
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
  properties:
  - type: OpenAPI
    url: openapi/thecompaniesapi-actions-api-openapi.yml
  - type: Documentation
    url: https://www.thecompaniesapi.com/api
  - type: APIReference
    url: https://thecompaniesapi.dev/api
- 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
  properties:
  - type: OpenAPI
    url: openapi/thecompaniesapi-analytics-api-openapi.yml
  - type: Documentation
    url: https://www.thecompaniesapi.com/api
  - type: APIReference
    url: https://thecompaniesapi.dev/api
- 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
  properties:
  - type: OpenAPI
    url: openapi/thecompaniesapi-companies-api-openapi.yml
  - type: Documentation
    url: https://www.thecompaniesapi.com/api
  - type: APIReference
    url: https://thecompaniesapi.dev/api
- 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
  properties:
  - type: OpenAPI
    url: openapi/thecompaniesapi-industries-api-openapi.yml
  - type: Documentation
    url: https://www.thecompaniesapi.com/api
  - type: APIReference
    url: https://thecompaniesapi.dev/api
- 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
  properties:
  - type: OpenAPI
    url: openapi/thecompaniesapi-job-titles-api-openapi.yml
  - type: Documentation
    url: https://www.thecompaniesapi.com/api
  - type: APIReference
    url: https://thecompaniesapi.dev/api
- 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:
  - lists
  properties:
  - type: OpenAPI
    url: openapi/thecompaniesapi-lists-api-openapi.yml
  - type: Documentation
    url: https://www.thecompaniesapi.com/api
  - type: APIReference
    url: https://thecompaniesapi.dev/api
- 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
  properties:
  - type: OpenAPI
    url: openapi/thecompaniesapi-locations-api-openapi.yml
  - type: Documentation
    url: https://www.thecompaniesapi.com/api
  - type: APIReference
    url: https://thecompaniesapi.dev/api
- 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
  properties:
  - type: OpenAPI
    url: openapi/thecompaniesapi-prompts-api-openapi.yml
  - type: Documentation
    url: https://www.thecompaniesapi.com/api
  - type: APIReference
    url: https://thecompaniesapi.dev/api
- 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:
  - teams
  properties:
  - type: OpenAPI
    url: openapi/thecompaniesapi-teams-api-openapi.yml
  - type: Documentation
    url: https://www.thecompaniesapi.com/api
  - type: APIReference
    url: https://thecompaniesapi.dev/api
- 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://thecompaniesapi.dev/api
- 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:
  - users
  properties:
  - type: OpenAPI
    url: openapi/thecompaniesapi-users-api-openapi.yml
  - type: Documentation
    url: https://www.thecompaniesapi.com/api
  - type: APIReference
    url: https://thecompaniesapi.dev/api
- 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
  properties:
  - type: OpenAPI
    url: openapi/thecompaniesapi-utilities-api-openapi.yml
  - type: Documentation
    url: https://www.thecompaniesapi.com/api
  - type: APIReference
    url: https://thecompaniesapi.dev/api
common:
- 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
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com