TIPS index ratio + inflation-adjusted principal by CUSIP

GET

/api/v2/fixed-income/treasury/tips/{cusip}/index-ratio

Last modified:2026-07-19 17:02:27

Maintainer:Not configured

OperationId:fixed_income_treasury_tips_cusip_index_ratio

x-mcp-tool:get_treasury_tips_index_ratio

The daily index ratio and inflation-adjusted principal for one Treasury Inflation-Protected Security (TIPS), computed from CPI-U (all urban consumers, not seasonally adjusted) using the standard Treasury reference-CPI convention: the reference CPI for the 1st of a month equals CPI-U three months prior, interpolated linearly within the month; the index ratio is that reference CPI divided by the reference CPI on the security's dated date. Omit date for today, or pass a date (YYYY-MM-DD). If the required CPI-U month is unpublished (e.g. the 2025 data gap), index_ratio is null and cpi_available is false. Sources: US Treasury Fiscal Data (dated-date reference CPI, CC0) and CPI-U (US Bureau of Labor Statistics).

Request

Authorization

API Key

Add parameter in header

x-api-key

Example:

x-api-key: ********************

Path Params

Query Params

Header Params

Request Code Samples

Shell

JavaScript

Java

Swift

PHP

Python

HTTP

Objective-C

Ruby

OCaml

Dart

curl --location 'https://sugra.ai/api/v2/fixed-income/treasury/tips//index-ratio?date=undefined' \
--header 'x-api-key: <api-key>'

Responses

🟢200OK

application/json

Index ratio and inflation-adjusted principal for the CUSIP.

Bodyapplication/json

Example

{
    "data": {
        "cusip": "string",
        "security_term": "string",
        "dated_date": "string",
        "ref_cpi_dated": 0,
        "as_of": "string",
        "reference_cpi": 0,
        "index_ratio": 0,
        "inflation_adjusted_principal_per_100": 0,
        "cpi_available": true
    },
    "meta": {
        "endpoint": "/api/v1/fred/us/cpi",
        "data_time": "2026-04-16T14:30:00Z",
        "response_time": "2026-04-16T14:30:12Z",
        "provider": "Sugra API v1.0.1",
        "source": "string",
        "attribution": "string",
        "fallback_used": true,
        "fallback_chain": [
            "string"
        ],
        "cached": true,
        "stale": true
    }
}

🟠401Unauthorized

🟠422Parameter Error

🟠429

🔴503Service Unavailable

Modified at 2026-07-19 17:02:27

Marketable Treasury debt maturity profile + WAM

Recent earthquakes (USGS)