Free REST API docs tool

API Documentation Generator

An API documentation generator turns endpoint definitions, parameters, authentication details, and response examples into a structured reference that developers can use immediately. This free API docs generator creates clean Markdown and HTML documentation with copy-ready examples for REST APIs.

Use it to document internal services, public APIs, or partner integrations, then hand implementation off to Elite Coders AI.

Endpoints

1

Add as many REST endpoints as you need.

Parameters

0

Query, path, header, and body fields.

Exports

Markdown + HTML

Copy sections or export the full reference.

1

Add API basics

Enter your API name, base URL, version, and authentication details so the docs start with the right overview and security instructions.

2

Define each endpoint

Add methods, paths, descriptions, parameters, and response examples. The generator turns those definitions into request sections automatically.

3

Copy or export

Review the generated preview, then copy Markdown, copy HTML, or download the full documentation file for your docs site or README.

API details

Capture the API name, description, base URL, and version so the generated documentation starts with a strong overview.

Authentication

Add how clients authenticate. The tool supports no auth, API keys, bearer tokens, OAuth-style bearer headers, and basic auth.

Endpoints

Add one or more endpoints with methods, paths, parameters, and response examples. The output preview updates as you edit.

GETEndpoint 1

GET /resource

Parameters

Add query, path, header, or body fields.

No parameters yet. Add query, path, header, or body fields for this endpoint.

Responses

Add status codes and example JSON payloads.

Generated documentation

Export API docs as Markdown or HTML, then copy individual sections or the full document.

Endpoints

1

Included in the table of contents.

Responses

1

Status-code blocks in each endpoint section.

Examples

4 languages

cURL, JavaScript, Python, and Go.

Table of contents

OverviewAuthenticationGET /resource

Overview

  • Base URL: https://api.example.com/v1
  • Version: v1
  • 1 documented endpoint(s).

Authentication

Bearer token. Header: `Authorization`. Example: `Bearer sk_live_your_token`. Use your secret token in the Authorization header for every request.

GET/resource

GET /resource

No endpoint description provided yet.

NameInTypeRequiredDescription
No parameters defined for this endpoint.

cURL

curl -X GET "https://api.example.com/v1/resource" \
  -H "Accept: application/json" \
  -H "Authorization: Bearer sk_live_your_token"

JavaScript (fetch)

const response = await fetch("https://api.example.com/v1/resource", {
  method: "GET",
  headers: {
    "Accept": "application/json",
    "Authorization": "Bearer sk_live_your_token",
  },
});

const data = await response.json();
console.log(data);

Python (requests)

import requests

url = "https://api.example.com/v1/resource"
headers = {
  "Accept": "application/json",
  "Authorization": "Bearer sk_live_your_token"
}

response = requests.request(
    "GET",
    url,
    headers=headers,
    timeout=30,
)

print(response.status_code)
print(response.text)

Go (net/http)

package main

import (
	"fmt"
	"io"
	"net/http"
)

func main() {
	body := http.NoBody
	req, err := http.NewRequest("GET", "https://api.example.com/v1/resource", body)
	if err != nil {
		panic(err)
	}
	req.Header.Set("Accept", "application/json")
	req.Header.Set("Authorization", "Bearer sk_live_your_token")
	client := &http.Client{}
	resp, err := client.Do(req)
	if err != nil {
		panic(err)
	}
	defer resp.Body.Close()

	bodyBytes, _ := io.ReadAll(resp.Body)
	fmt.Println(resp.StatusCode)
	fmt.Println(string(bodyBytes))
}

Responses

200

No response description provided.

No example response provided.

Raw output

# API Documentation

Describe what your API does so developers understand the purpose before they read the reference.

## Table of Contents

- [Overview](#overview)
- [Authentication](#authentication)
- [GET /resource](#get-resource)

## Overview

- Base URL: `https://api.example.com/v1`
- Version: `v1`
- Endpoints: 1

## Authentication

Bearer token. Header: `Authorization`. Example: `Bearer sk_live_your_token`. Use your secret token in the Authorization header for every request.

## Endpoints

### GET /resource
**Method:** `GET`
**Path:** `/resource`
No endpoint description provided yet.

#### Parameters

_No parameters defined._

#### cURL

```bash
curl -X GET "https://api.example.com/v1/resource" \
  -H "Accept: application/json" \
  -H "Authorization: Bearer sk_live_your_token"
```

#### JavaScript (fetch)

```javascript
const response = await fetch("https://api.example.com/v1/resource", {
  method: "GET",
  headers: {
    "Accept": "application/json",
    "Authorization": "Bearer sk_live_your_token",
  },
});

const data = await response.json();
console.log(data);
```

#### Python (requests)

```python
import requests

url = "https://api.example.com/v1/resource"
headers = {
  "Accept": "application/json",
  "Authorization": "Bearer sk_live_your_token"
}

response = requests.request(
    "GET",
    url,
    headers=headers,
    timeout=30,
)

print(response.status_code)
print(response.text)
```

#### Go (net/http)

```go
package main

import (
	"fmt"
	"io"
	"net/http"
)

func main() {
	body := http.NoBody
	req, err := http.NewRequest("GET", "https://api.example.com/v1/resource", body)
	if err != nil {
		panic(err)
	}
	req.Header.Set("Accept", "application/json")
	req.Header.Set("Authorization", "Bearer sk_live_your_token")
	client := &http.Client{}
	resp, err := client.Do(req)
	if err != nil {
		panic(err)
	}
	defer resp.Body.Close()

	bodyBytes, _ := io.ReadAll(resp.Body)
	fmt.Println(resp.StatusCode)
	fmt.Println(string(bodyBytes))
}
```

#### Responses

#### 200 Response

No response description provided.

_No example response provided._

Rendered HTML preview

This is the generated HTML fragment rendered in-place so you can check the final structure before exporting.

API Documentation

Describe what your API does so developers understand the purpose before they read the reference.

Overview

  • Base URL: https://api.example.com/v1
  • Version: v1
  • Endpoints: 1

Authentication

Bearer token. Header: `Authorization`. Example: `Bearer sk_live_your_token`. Use your secret token in the Authorization header for every request.

GET /resource

GET /resource

No endpoint description provided yet.

Parameters

No parameters defined.

cURL

curl -X GET "https://api.example.com/v1/resource" \
  -H "Accept: application/json" \
  -H "Authorization: Bearer sk_live_your_token"

JavaScript (fetch)

const response = await fetch("https://api.example.com/v1/resource", {
  method: "GET",
  headers: {
    "Accept": "application/json",
    "Authorization": "Bearer sk_live_your_token",
  },
});

const data = await response.json();
console.log(data);

Python (requests)

import requests

url = "https://api.example.com/v1/resource"
headers = {
  "Accept": "application/json",
  "Authorization": "Bearer sk_live_your_token"
}

response = requests.request(
    "GET",
    url,
    headers=headers,
    timeout=30,
)

print(response.status_code)
print(response.text)

Go (net/http)

package main

import (
	"fmt"
	"io"
	"net/http"
)

func main() {
	body := http.NoBody
	req, err := http.NewRequest("GET", "https://api.example.com/v1/resource", body)
	if err != nil {
		panic(err)
	}
	req.Header.Set("Accept", "application/json")
	req.Header.Set("Authorization", "Bearer sk_live_your_token")
	client := &http.Client{}
	resp, err := client.Do(req)
	if err != nil {
		panic(err)
	}
	defer resp.Body.Close()

	bodyBytes, _ := io.ReadAll(resp.Body)
	fmt.Println(resp.StatusCode)
	fmt.Println(string(bodyBytes))
}

Responses

200

No response description provided.

No example response provided.

FAQ

Common questions about using an API docs generator and writing better REST API documentation.

What should API documentation include?

Good API documentation explains the base URL, authentication method, each endpoint, required and optional parameters, request examples, response schemas, and error responses. Developers should be able to make a successful request from the docs alone.

Why are code examples important in API docs?

Code examples reduce ambiguity and shorten time to first successful API call. Showing cURL, JavaScript, Python, or Go examples helps developers copy a request shape that already includes headers, payloads, and authentication.

How often should REST API documentation be updated?

API documentation should be updated whenever the contract changes, including new endpoints, renamed fields, auth changes, or new error cases. Stale docs create integration failures, so the best practice is to update them in the same workflow as the API change.

Can this tool generate documentation for internal APIs?

Yes. The generator works for public APIs, internal service APIs, partner APIs, and staging interfaces. If your team shares endpoint definitions, parameters, and sample responses, you can turn them into readable docs quickly.

What is the difference between API reference docs and API guides?

Reference docs focus on exact endpoint contracts, such as methods, paths, request fields, and responses. Guides are broader and teach workflows or use cases. Most APIs need both, but a strong reference is the foundation.

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Built by Elite Coders AI

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