How AI is applied across API Evangelist and APIs.io. Read my AI disclosure →
API Evangelist API Evangelist
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC

Mattermark REST API

RESTful access to Mattermark company, investor, funding-event, news and personnel data, with page-based pagination and MSFL query endpoints.

This API exposes 11 operations across 11 paths, organized into 6 resource areas, and defines 40 schemas. It is described by OpenAPI 2.0, at version 1.0.0.

Requests are made against the base URL https://api.mattermark.com/.

11 operations 11 paths 40 schemas 10 GET1 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 2.0
API Version
1.0.0
Base URL
https://api.mattermark.com/
Authentication
API Key
Resource Areas
6

Authentication & Security 1

Mattermark REST API declares 1 security scheme for authenticating requests. An API key is passed in the header as Authorization (APIKeyHeaderParam). By default, every request must be authenticated.

Paths & Operations 11

Across 11 paths, the API surfaces 11 operations — 10 GET, 1 POST. They span 6 resource areas: Search, Companies, Funding Events, Investors, Complex Queries, Utilities. Each is listed below with its method, path, parameters, and response codes.

Search 1
GET
/search
Search for companies or investors
search 2 params → 200400
Companies 5
GET
/companies
Retrieve a list of companies
get_companies 36 params → 200400
GET
/companies/{id}
Retrieve a specific company
get_company 1 param → 200
GET
/companies/{id}/stories
Retrieve company news articles
get_company_stories 1 param → 200
GET
/companies/{id}/similar
Retrieve similar companies
get_similar_companies 1 param → 200
GET
/companies/{id}/people
Retrieve company employees
get_company_personnel 1 param → 200
Funding Events 1
GET
/fundings
Retrieve a list of funding events
searchFunding 9 params → 200400
Investors 2
GET
/investors/{id}
Retrieve a specific investor
get_investor 1 param → 200
GET
/investors/{id}/portfolio
Retrieve an investor's portfolio companies
get_investor_portfolio 1 param → 200
Complex Queries 1
POST
/queries
Perform a complex investor query
query_investors 1 param → 200
Utilities 1
GET
/ratelimit/usage
Check remaining quota
quota → 200

Schemas 40

The contract defines 40 schemas that model the data the API accepts and returns. The most detailed are CompanyItem (45 properties), InvestorItem (17 properties), FundingItem (17 properties), SearchItem (9 properties). Each schema is shown below with its type and property counts.

companies
object
4 properties 4 required
InvestorCompanies
object
8 properties
SearchItem
object
9 properties 9 required
CompanyItem
object
45 properties 2 required
ItunesApps
object
4 properties
GooglePlayApps
object
7 properties 7 required
Funding
object
8 properties 8 required
Acquired_By
object
5 properties 5 required
Acquired_Companies
object
5 properties 5 required
Stories
object
4 properties
GrowthSource
object
2 properties
MindshareScores
object
2 properties
EmployeeCount
object
2 properties
AlexaRank
object
2 properties
FacebookTalkingCount
object
2 properties
FacebookLikeCount
object
2 properties
TwitterFollowerCount
object
2 properties
LinkedinFollowerCount
object
2 properties
ItunesUSAWeeklyDownloads
object
2 properties
InboundLinks
object
2 properties
EstMonthlyUniques
object
2 properties
FundingItem
object
17 properties 17 required
Metadata
object
4 properties
InvestorItem
object
17 properties 2 required
SimpleInvestorsList
object
2 properties 1 required
Stages
object
2 properties
Location
object
2 properties
BusinessModel
object
2 properties
Industry
object
2 properties
Series
object
2 properties
Quarterly
object
2 properties
QuarterlyLocation
object
2 properties
QuarterlySubIndustry
object
2 properties
QuarterlySubStage
object
2 properties
QuarterlySubBusinessModel
object
2 properties
TopIndustry
object
2 properties
MostRecentFillings
object
5 properties
CompanyStory
object
5 properties 5 required
SimilarCompany
object
8 properties 8 required
PeopleItem
object
3 properties 3 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

mattermark-rest-api-openapi.yml Raw ↑
Where this information came from

This is an independent, third-party profile of Mattermark REST API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.

info@apievangelist.com · Read the full data-sourcing policy →
On a security or compliance team? Put security in the subject line and you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.