Calculate reward recommendations

Calculate the recommended participant reward rates for a data collection, optionally based upon a given set of filters

Authentication

AuthorizationToken

The Prolific API uses API token to authenticate requests. You can create an API token directly from your settings.

Your API token does not have an expiry date and carries full permission, so be sure to keep them secure.

If your token is leaked, delete it and create a new one directly in the app.

In your requests add Authorization header with the value Token <your token>.

Query parameters

workspace_idstringRequired

The ID of the workspace in which you'll be creating the study

currencyenumRequired

An ISO 4217 currency code. Note that we only support a selection of currency codes as per the enum values.

Allowed values:

screener_idsstringOptional

A URL-encoded, comma-delimited list of filter IDs (e.g. custom group filter IDs) that you plan to apply to your study.

There are various methods of converting an array of filter IDs to a URL-encoded, comma delimited array e.g:

JavaScript:

const screenerIDs = ["mandarin", "spanish"];
const encodedScreenerIDs = encodeURIComponent(screenerIDs.join(","));
const url = `https://api.prolific.com/api/v1/reward-recommendations?screener_ids=${encodedScreenerIDs}&workspace_id=<workspace ID>&currency=GBP`

Python:

import urllib.parse

screener_ids = ["mandarin", "spanish"]
encoded_screener_ids = urllib.parse.quote(",".join(screener_ids))
url = f"https://api.prolific.com/api/v1/reward-recommendations?screener_ids={encoded_screener_ids}&workspace_id=<workspace ID>&currency=GBP"

Response

A list of reward recommendations. We suggest using the first recommendation in the list as this is guaranteed to be the most recent set of reward rates.

currencyenumOptional

An ISO 4217 currency code. Note that we only support a selection of currency codes as per the enum values.

Allowed values:

min_reward_per_hourintegerOptional

The minimum hourly reward rate that we recommend you pay to your study’s participants.

Note that this is returned as the hundredth subunit of the given currency i.e:

for USD, this will be the value in cents
for GBP, this will be the value in pence

To display this as USD or GBP respectively, you’ll need to divide this value by 100 and use an appropriate number formatting API e.g:

JavaScript:

new Intl.NumberFormat("en-US", { style: "currency", currency: "USD" }).format(2000/ 100); // "$20.00"

recommended_reward_per_hourintegerOptional

The good hourly reward rate that we recommend you pay to your study’s participants.

Note that this is returned as the hundredth subunit of the given currency i.e:

for USD, this will be the value in cents
for GBP, this will be the value in pence

To display this as USD or GBP respectively, you’ll need to divide this value by 100 and use an appropriate number formatting API e.g:

JavaScript:

new Intl.NumberFormat("en-US", { style: "currency", currency: "USD" }).format(2000/ 100); // "$20.00"

Errors

4XX

Client Request Error