# Public API

### What is the Public API? 

The Hesh Public API is designed to make it easy and fast for orders to get into the Hesh system and to the contractors. Transfer orders directly from an external system to Hesh with the necessary details and in the right quantity, change order information, or cancel them. 

***

### Advantages of using the API 

Using the API allows Hesh to automate your production processes by integrating with other systems with flexible settings. 

***

### Target audience

* Developers
* Integrators
* Customers

***

### Authentication

The API is accessed through the API Key. To get the key, contact your Success Manager.

***

### Basic URL and environments

Production environment: [`https://api.hesh.app/api/v1/public`](https://api.hesh.app/api/v1/public/xxxxxx)

***

### Data formats

* JSON

***

### HTTP response codes

This API uses the following error codes:

* <mark style="color:green;">`200`</mark> `OK` - The request was successful.
* <mark style="color:green;">`201`</mark> `Created` — The resource was successfully created.
* <mark style="color:red;">`400`</mark> `Bad Request` — The request was malformed or missing the required parameters.
* <mark style="color:red;">`401`</mark> `Unauthorized` — The API key provided was invalid or missing.
* <mark style="color:red;">`404`</mark> `Not Found` — The requested resource was not found.
* <mark style="color:red;">`429`</mark>  `Too many requests` — The rate limit is reached.
* <mark style="color:red;">`500`</mark> `Internal Server Error` — An unexpected error occurred on the server.

***

### Rate Limiting and Fair Usage Policy

To ensure fair and reliable access for all integrators, the Public API enforces **multiple throttling layers**. These limits protect the stability of the platform while allowing consistent, high-volume integration.

Requests are tracked and rate-limited within the following time windows:

<table><thead><tr><th width="152.01171875">Window</th><th width="265.5625">Limit</th><th>Description</th></tr></thead><tbody><tr><td><strong>Burst</strong></td><td>15 requests / second</td><td>Handles short, high-frequency spikes without penalizing normal workloads</td></tr><tr><td><strong>Short</strong></td><td>300 requests / minute</td><td>Governs sustained request rates within a one-minute window</td></tr><tr><td><strong>Medium</strong></td><td>4,000 requests / hour</td><td>Ensures fair long-term throughput across all tenants</td></tr></tbody></table>

If these thresholds are exceeded, the API responds with HTTP <mark style="color:red;">429 Too Many Requests</mark> and temporarily blocks further requests until the limit window resets.

> ⚠️ **Important:**\
> The limits described below represent **global rate limiters** applied across most endpoints.\
> However, certain resource-intensive or high-complexity endpoints may have **stricter or separate throttling rules** to protect overall system performance.\
> Developers integrating with such endpoints should review each operation’s specific documentation for its applicable limits.

#### Response Headers Reference

<table><thead><tr><th width="239.0078125">Header</th><th>Description</th></tr></thead><tbody><tr><td>X-RateLimit-Limit</td><td>Maximum number of allowed requests during the current window</td></tr><tr><td>X-RateLimit-Remaining</td><td>Remaining number of requests before throttling occurs</td></tr><tr><td>X-RateLimit-Reset</td><td>Number of seconds until the rate limit window resets</td></tr></tbody></table>

#### Integration Recommendations

* Implement **exponential backoff** when receiving HTTP 429.
* Avoid tight retry loops - continued requests during a block window will extend the delay period.
* For continuous synchronization or high-frequency data exchange, consider batching requests or scheduling them across intervals.

## FAQ

<details>

<summary>Where does the synchronization go from here to HESH? </summary>

From an external system to Hesh.

</details>

<details>

<summary>What data comes from the external system to HESH? </summary>

An ***order*** is sent from the external system. \
In the body of the request, there is a quantity field, and these will be the production items that are already being launched for execution.&#x20;

For example, you send order 123-S for the production of 5 laptops.

More about order creation [here](broken://pages/w2ZJM6SzyOUoEazqikhT#create-order).

</details>

## Technical support

Contact your Success manager for providing needed information.&#x20;


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.hesh.app/manuals/public-api.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.