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Matter Annotations API

Highlights and notes on items.

Matter Annotations API is one of 6 APIs that Matter publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

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

This API exposes 4 operations across 2 paths, and defines 3 schemas. It is described by OpenAPI 3.1.0, at version 1.0.

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

4 operations 2 paths 3 schemas 1 DELETE2 GET1 PATCH

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.1.0
API Version
1.0
Base URL
https://api.getmatter.com/public/v1
Authentication
HTTP Bearer
Resource Areas
1

Authentication & Security 1

Matter Annotations API declares 1 security scheme for authenticating requests. It accepts HTTP bearer tokens (bearerAuth). By default, every request must be authenticated.

  • bearerAuth — Personal API token with mat prefix. Generate one at https://web.getmatter.com/settings.

Paths & Operations 4

Across 2 paths, the API surfaces 4 operations — 1 DELETE, 2 GET, 1 PATCH. Each is listed below with its method, path, parameters, and response codes.

Annotations 4

Highlights and notes on items.

GET
/v1/items/{item_id}/annotations
List annotations
listAnnotations 3 params → 200401403404429
GET
/v1/annotations/{id}
Get annotation
getAnnotation 1 param → 200401403404429
PATCH
/v1/annotations/{id}
Update annotation
updateAnnotation 1 param body → 200401403404429
DELETE
/v1/annotations/{id}
Delete annotation
deleteAnnotation 1 param → 204401403404429

Schemas 3

The contract defines 3 schemas that model the data the API accepts and returns. The most detailed are Annotation (7 properties), PaginatedList (4 properties), Error (1 property). Each schema is shown below with its type and property counts.

PaginatedList
object
4 properties 3 required
Annotation
object
7 properties 6 required
Error
object
1 property 1 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

matter-annotations-api-openapi.yml Raw ↑

Other APIs Matter publishes across the network.

Matter Account API
Matter Items API
Matter Reading Sessions API
Matter Search API
Matter Tags API
Where this information came from

This is an independent, third-party profile of Matter Annotations 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.

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