# Mattermark Companies API

**Canonical:** https://apis.io/apis/mattermark/mattermark-companies-api/  
**Provider:** Mattermark — https://apis.io/providers/mattermark/  
**Base URL:** https://api.mattermark.com/  
**Documentation:** https://developer.mattermark.com/reference

Mattermark Companies API is one of 7 APIs that [Mattermark](https://apis.io/providers/mattermark/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Companies. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, and authentication docs.

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

## Operations (5)

| Method | Path | Summary |
|---|---|---|
| GET | `/companies` | Retrieve a list of companies |
| GET | `/companies/{id}` | Retrieve a specific company |
| GET | `/companies/{id}/stories` | Retrieve company news articles |
| GET | `/companies/{id}/similar` | Retrieve similar companies |
| GET | `/companies/{id}/people` | Retrieve company employees |

## Machine-readable artifacts (9)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/mattermark/refs/heads/main/openapi/mattermark-companies-api-openapi.yml
- **Documentation** — https://developer.mattermark.com/docs
- **Documentation** — https://docs.mattermark.com/rest_api/index.html
- **APIReference** — https://developer.mattermark.com/reference
- **SourceCode** — https://github.com/Mattermark/mattermark-openapi
- **Authentication** — https://raw.githubusercontent.com/api-evangelist/mattermark/refs/heads/main/authentication/mattermark-authentication.yml
- **Conventions** — https://raw.githubusercontent.com/api-evangelist/mattermark/refs/heads/main/conventions/mattermark-conventions.yml
- **ErrorCatalog** — https://raw.githubusercontent.com/api-evangelist/mattermark/refs/heads/main/errors/mattermark-problem-types.yml
- **DataModel** — https://raw.githubusercontent.com/api-evangelist/mattermark/refs/heads/main/data-model/mattermark-data-model.yml

## Other Mattermark APIs (6)

- [Mattermark GraphQL API](https://apis.io/apis/mattermark/mattermark-graphql-api/)
- [Mattermark Complex Queries API](https://apis.io/apis/mattermark/mattermark-complex-queries-api/)
- [Mattermark Funding Events API](https://apis.io/apis/mattermark/mattermark-funding-events-api/)
- [Mattermark Investors API](https://apis.io/apis/mattermark/mattermark-investors-api/)
- [Mattermark Search API](https://apis.io/apis/mattermark/mattermark-search-api/)
- [Mattermark Utilities API](https://apis.io/apis/mattermark/mattermark-utilities-api/)

## Tags

Companies

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/mattermark/mattermark-companies-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/mattermark/.