> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.trygrant.com/api-reference/grant-events-api/plan-fees/get-fee/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.trygrant.com/_mcp/server.

# Retrieve a plan fee

GET https://api.trygrant.com/v1/plans/{id}/fees/{feeId}

Fetches a single fee on a plan.

Reference: https://docs.trygrant.com/api-reference/grant-events-api/plan-fees/get-fee

## Authentication

- `Authorization` header (bearer token, required) — API key obtained from the Grant dashboard

## Servers

- `https://api.trygrant.com` (Production, default)
- `http://localhost:8787` (Local development)

## Request

### Path parameters

- `id` (string, required)
- `feeId` (string, required)

## Response

### 200

Fee found

- `success` (boolean, required)
- `fee` (PlanFee, required)
- `request_id` (string, required)

## Errors

### 401 Unauthorized Error

Unauthorized

- `success` (boolean, required)
- `error` (ErrorResponseError, required)
- `request_id` (string, optional) — Request ID for tracing

### 404 Not Found Error

Fee not found

- `success` (boolean, required)
- `error` (ErrorResponseError, required)
- `request_id` (string, optional) — Request ID for tracing

### 500 Internal Server Error

Internal server error

- `success` (boolean, required)
- `error` (ErrorResponseError, required)
- `request_id` (string, optional) — Request ID for tracing

## Types

### PlanFee

- `id` (string, required)
- `plan_id` (string, required)
- `product` (PlanFeeProduct, required)
- `price` (Price, required)
- `effective_from` (string, required, nullable) — ISO 8601 timestamp the fee becomes effective
- `effective_to` (string, required, nullable) — ISO 8601 timestamp the fee stops being effective

### ErrorResponseError

- `code` (string, required)
- `message` (string, required)
- `details` (any, optional)

### PlanFeeProduct

- `id` (string, required)
- `name` (string, required)

### Price

- `id` (string, required)
- `pricing_model` (enum, required) — flat = fixed recurring/one-time fee, per_unit = usage-based rate, cost_plus = underlying cost with markup
  - Allowed values: `flat`, `per_unit`, `cost_plus`
- `amount` (double, required) — Amount in minor units of the denomination (e.g. cents) charged per `denominator` units
- `denominator` (integer, required) — Number of usage units the amount applies to
- `billing_mode` (enum, required)
  - Allowed values: `in_advance`, `in_arrears`
- `cadence` (enum, required) — Billing cadence for flat fees; null for usage-based prices
  - Allowed values: `monthly`, `quarterly`, `yearly`, `one_time`
- `currency_code` (string, required, nullable) — Currency denomination; null when the price is denominated in a pricing unit
- `pricing_unit_id` (string, required, nullable) — Pricing unit (custom credit) denomination; null when denominated in currency
- `display_denominator` (string, required, nullable) — Optional display label for the denominator (e.g. "1M tokens")
- `cost_plus` (PriceCostPlus, required, nullable) — Markup configuration for cost_plus prices

### PriceCostPlus

Markup configuration for cost_plus prices

- `markup_mode` (enum, required)
  - Allowed values: `multiplier`, `target_margin`
- `multiplier` (double, required, nullable) — Cost multiplier, e.g. 1.2 bills 120% of cost
- `target_margin` (double, required, nullable) — Target margin between 0 and 1, e.g. 0.3 for 30%

## Examples

**Response**

```json
{
  "success": true,
  "fee": {
    "id": "cm5x9z8nv0005h85r7l9p2k6m",
    "plan_id": "cm5x9z8nv0000h85r7l9p2k1m",
    "product": {
      "id": "cm5x9z8nv0004h85r7l9p2k5m",
      "name": "Platform fee"
    },
    "price": {
      "id": "cm5x9z8nv0003h85r7l9p2k4m",
      "pricing_model": "flat",
      "amount": 5000,
      "denominator": 1,
      "billing_mode": "in_advance",
      "cadence": "monthly",
      "currency_code": "usd",
      "pricing_unit_id": null,
      "display_denominator": null,
      "cost_plus": {
        "markup_mode": "multiplier",
        "multiplier": 1.2,
        "target_margin": null
      }
    },
    "effective_from": null,
    "effective_to": null
  },
  "request_id": "req_abc123"
}
```

**SDK Code**

```python
import requests

url = "https://api.trygrant.com/v1/plans/cm5x9z8nv0000h85r7l9p2k1m/fees/cm5x9z8nv0005h85r7l9p2k6m"

headers = {"Authorization": "Bearer <token>"}

response = requests.get(url, headers=headers)

print(response.json())
```

```javascript
const url = 'https://api.trygrant.com/v1/plans/cm5x9z8nv0000h85r7l9p2k1m/fees/cm5x9z8nv0005h85r7l9p2k6m';
const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go
package main

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

func main() {

	url := "https://api.trygrant.com/v1/plans/cm5x9z8nv0000h85r7l9p2k1m/fees/cm5x9z8nv0005h85r7l9p2k6m"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("Authorization", "Bearer <token>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://api.trygrant.com/v1/plans/cm5x9z8nv0000h85r7l9p2k1m/fees/cm5x9z8nv0005h85r7l9p2k6m")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'

response = http.request(request)
puts response.read_body
```

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.get("https://api.trygrant.com/v1/plans/cm5x9z8nv0000h85r7l9p2k1m/fees/cm5x9z8nv0005h85r7l9p2k6m")
  .header("Authorization", "Bearer <token>")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('GET', 'https://api.trygrant.com/v1/plans/cm5x9z8nv0000h85r7l9p2k1m/fees/cm5x9z8nv0005h85r7l9p2k6m', [
  'headers' => [
    'Authorization' => 'Bearer <token>',
  ],
]);

echo $response->getBody();
```

```csharp
using RestSharp;

var client = new RestClient("https://api.trygrant.com/v1/plans/cm5x9z8nv0000h85r7l9p2k1m/fees/cm5x9z8nv0005h85r7l9p2k6m");
var request = new RestRequest(Method.GET);
request.AddHeader("Authorization", "Bearer <token>");
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = ["Authorization": "Bearer <token>"]

let request = NSMutableURLRequest(url: NSURL(string: "https://api.trygrant.com/v1/plans/cm5x9z8nv0000h85r7l9p2k1m/fees/cm5x9z8nv0005h85r7l9p2k6m")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "GET"
request.allHTTPHeaderFields = headers

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```

> API documentation for Grant — billing infrastructure for usage-based pricing