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Mattermark Complex Queries API

The Complex Queries API from Mattermark — 1 operation(s) for complex queries.

Mattermark Complex Queries API is one of 7 APIs that Mattermark publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Complex Queries. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, and authentication docs.

This API exposes 1 operation across 1 path. It is described by OpenAPI 3.2.0, at version 1.0.0.

Requests are made against a single base URL, https://api.mattermark.com.

1 operations 1 paths 0 schemas 1 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
1.0.0
Base URL
https://api.mattermark.com/
Authentication
API Key
Resource Areas
1

Authentication & Security 1

Mattermark Complex Queries 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 1

Across 1 path, the API surfaces 1 operation — 1 POST. Each is listed below with its method, path, parameters, and response codes.

Complex Queries 1
POST
/queries
Perform a complex investor query
query_investors body → 200

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

mattermark-complex-queries-api-openapi.yml Raw ↑

Other APIs Mattermark publishes across the network.

Mattermark GraphQL API
Mattermark Companies API
Mattermark Funding Events API
Mattermark Investors API
Mattermark Search API
Mattermark Utilities API
Where this information came from

This is an independent, third-party profile of Mattermark Complex Queries 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.

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