---
title: Notecard API
description: An overview of all API requests relevant to Blues Notecard and Notehub to communicate over Cellular, Satellite, LoRa, or WiFi. Each section details the options available for each request, what each request returns, and examples.
source_url: https://dev.blues.io/api-reference/notecard-api/
canonical_url: https://dev.blues.io/api-reference/notecard-api/
markdown_url: https://dev.blues.io/api-reference/notecard-api.md
---

# Notecard API

This API reference contains an alphabetical overview of all Notecard API [requests](https://dev.blues.io/api-reference/glossary.md#request). Each API listing includes the arguments available for each request, what each request returns, as well as examples of how to perform the request on a Notecard in host firmware.

## Request Badges

Each request includes a series of badges that indicate which types of Notecards support the request.

- (Cell) indicates a request can be performed on all versions of Notecard Cellular.

- (Cell+WiFi) indicates a request can be performed on all versions of Notecard Cell+WiFi.

- (LoRa) indicates a request can be performed on Notecard for LoRa.

- (Skylo) indicates a request can be performed on Notecard for Skylo.

- (WiFi) indicates a request can be performed on all versions of Notecard WiFi.

## Request Listing

### [card Requests](https://dev.blues.io/api-reference/notecard-api/card-requests.md)

[Configure device behavior, read GPS and accelerometer data, and query Notecard state, network, and peripherals.](https://dev.blues.io/api-reference/notecard-api/card-requests.md)

[View reference](https://dev.blues.io/api-reference/notecard-api/card-requests.md)

### [dfu Requests](https://dev.blues.io/api-reference/notecard-api/dfu-requests.md)

[Host firmware update requests used, in concert with Notehub, to update the firmware of a host MCU.](https://dev.blues.io/api-reference/notecard-api/dfu-requests.md)

[View reference](https://dev.blues.io/api-reference/notecard-api/dfu-requests.md)

### [env Requests](https://dev.blues.io/api-reference/notecard-api/env-requests.md)

[Read and work with environment variables.](https://dev.blues.io/api-reference/notecard-api/env-requests.md)

[View reference](https://dev.blues.io/api-reference/notecard-api/env-requests.md)

### [file Requests](https://dev.blues.io/api-reference/notecard-api/file-requests.md)

[Work with all types of Notefiles, including changing, deleting, and querying their contents.](https://dev.blues.io/api-reference/notecard-api/file-requests.md)

[View reference](https://dev.blues.io/api-reference/notecard-api/file-requests.md)

### [hub Requests](https://dev.blues.io/api-reference/notecard-api/hub-requests.md)

[Configure and monitor the connection between Notecard and Notehub.](https://dev.blues.io/api-reference/notecard-api/hub-requests.md)

[View reference](https://dev.blues.io/api-reference/notecard-api/hub-requests.md)

### [note Requests](https://dev.blues.io/api-reference/notecard-api/note-requests.md)

[Create and manage the Notes stored inside Notefiles.](https://dev.blues.io/api-reference/notecard-api/note-requests.md)

[View reference](https://dev.blues.io/api-reference/notecard-api/note-requests.md)

### [ntn Requests](https://dev.blues.io/api-reference/notecard-api/ntn-requests.md)

[Interface with a paired Starnote device for NTN (satellite) communications.](https://dev.blues.io/api-reference/notecard-api/ntn-requests.md)

[View reference](https://dev.blues.io/api-reference/notecard-api/ntn-requests.md)

### [var Requests](https://dev.blues.io/api-reference/notecard-api/var-requests.md)

[A simple interface for managing data stored in DB Notefiles.](https://dev.blues.io/api-reference/notecard-api/var-requests.md)

[View reference](https://dev.blues.io/api-reference/notecard-api/var-requests.md)

### [web Requests](https://dev.blues.io/api-reference/notecard-api/web-requests.md)

[Perform requests against third-party APIs and services directly from Notecard.](https://dev.blues.io/api-reference/notecard-api/web-requests.md)

[View reference](https://dev.blues.io/api-reference/notecard-api/web-requests.md)

[card Requests](https://dev.blues.io/api-reference/notecard-api/card-requests.md "card Requests")