USCPI

U.S. Consumer Price Index

Synthetic Asset Description

A synthetic asset that tracks the latest price for the U.S. Consumer Price index for All Urban Consumers: All Items in U.S. City Average.

Display Name: U.S. Consumer Price Index for All Urban Consumers: All Items in U.S. City Average Symbol: USCPI EMP Price Identifier: Numerical Market: Published by https://www.bls.gov/ Data Update Frequency: Monthly Price Feed Source: https://fred.stlouisfed.org/docs/api/fred/ Data Providers:

• Real-time or latest price: Use the chart provided by this link https://fred.stlouisfed.org/series/CPIAUCSL

• Historical data: Configure the following URL by inputting values for 'api_key=' and 'observation_start=':

  • https://api.stlouisfed.org/fred/series/observations?series_id=CPIAUCSL&api_key=API-KEY-VALUE&file_type=json&observation_start=YYYY-MM-DD

Manual Price Calculation

To determine the monthly price for USCPI for the given month of a request timestamp, voters must do the following:

1. Get the request timestamp.

2. Convert the timestamp to UTC time.

3. Get the exact date/month/year.

4. Go to https://fred.stlouisfed.org/docs/api/fred/series_observations.html

5. Acquire an API key.

6. Using the following URL, enter the required values for 'api_key=' and 'observation_start=':

   • https://api.stlouisfed.org/fred/series/observations?series_id=CPIAUCSL&api_key=API-KEY-VALUE&file_type=json&observation_start=YYYY-MM-DD

7. Paste the configured URL into your browser's search bar.

8. Retrieve the CPI Price from the response JSON. The correct CPI price for a given date will be located beside the “value” keyword within the response JSON.

Example response object

{"realtime_start":"2023-03-06","realtime_end":"2023-03-06","observation_start":"2022-12-22","observation_end":"9999-12-31","units":"lin","output_type":1,"file_type":"json","order_by":"observation_date","sort_order":"asc","count":2,"offset":0,"limit":100000,"observations":[{"realtime_start":"2023-03-06","realtime_end":"2023-03-06","date":"2022-12-01","value":"298.990"},{"realtime_start":"2023-03-06","realtime_end":"2023-03-06","date":"2023-01-01","value":"300.536"}]}