Koskamo

CPI Inflation Calculator MCP

An MCP server that provides AI assistants with official U.S. Consumer Price Index data from the Bureau of Labor Statistics, ranging from 1913 to the latest published month. It allows users to calculate inflation adjustments, compare raises to inflation, determine Social Security COLA, and retrieve the latest CPI metrics using live BLS API data.

Endpoint and access

No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.

CPI Inflation Calculator MCP logo, by ZovoCommunity listingStreamable HTTPNo sign-inEndpoint checked 2026-11-07Published by Zovo
MCP endpoint (Streamable HTTP)
https://cpi-inflation-calculator-mcp.lipmichal.workers.dev/mcp
Vendor documentation

What its tools do

5 tools, grouped by the hints the server advertises. Hints are self-declared, not verified behavior.

Read-only (5)

5 of 5 have a description · 5 of 5 declare behavior hints · 4 of 4 with parameters document them all

Checks and signals

Each line is separate evidence, not a trust score.

  • Passed Endpoint answered the live check ·
  • Availability 1 of 1 checks passed in 30 days

What you can do with it

  • Adjust a dollar amount between any two months or years from 1913 to the latest BLS release
  • Retrieve the latest CPI month from BLS, checked live: 12-month inflation for CPI-U, core CPI and CPI-W
  • Calculate annual-average and December-to-December inflation for any year, plus the current 12-month rate
  • Determine whether a raise beat inflation by calculating real raise, pay needed to keep pace, gain or shortfall

Source and maintenance

Community listingRegistry 1.0.0
mcp-registry: io.github.theluckystrike/cpi-inflation-calculator-mcp@1.0.0Source repositoryProject website
Maintenance checked

Protocol and capabilities

Server
cpi-inflation-calculator-mcp 1.0.0
MCP protocol negotiated in check
2025-11-25
Tools
5 advertised
Resources
Not advertised
Resource templates
Not advertised
Prompts
Not advertised
Server-advertised capabilities
{
  "tools": {
    "listChanged": true
  }
}

Tools

5 advertised

calculate_inflation — Inflation calculator (CPI, 1913 to latest month)
Advertised by the server during the last successful anonymous check.
Advertised read-onlyOpen-world

Adjusts a dollar amount for inflation between any two periods from 1913 to the latest month the U.S. Bureau of Labor Statistics has published, using the official CPI-U (or CPI-W or core CPI). Checks the BLS Public Data API live for months newer than its bundled data (bundled through September 2026, fetched 2026-11-03), so it knows CPI figures newer than a model's training data. Handles the October 2025 gap: BLS published no October 2025 CPI because of the 2025 lapse in appropriations. Returns the adjusted amount, cumulative and average annual inflation, and the exact index values used.

calculate_inflation input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "amount",
    "from"
  ],
  "properties": {
    "to": {
      "type": "string",
      "maxLength": 10,
      "minLength": 4,
      "description": "Ending period, default \"latest\": \"YYYY\" for the annual average, \"YYYY-MM\" for one month, or \"latest\"."
    },
    "from": {
      "type": "string",
      "maxLength": 10,
      "minLength": 4,
      "description": "Starting period, e.g. \"1995\" or \"2020-01\": \"YYYY\" for the annual average, \"YYYY-MM\" for one month, or \"latest\"."
    },
    "amount": {
      "type": "number",
      "maximum": 10000000000000,
      "minimum": 0,
      "description": "Dollar amount in the 'from' period."
    },
    "series": {
      "enum": [
        "cpi_u",
        "cpi_w",
        "core"
      ],
      "type": "string",
      "description": "cpi_u (default, the headline CPI), cpi_w (wage earners, used for Social Security COLAs) or core (CPI-U less food and energy)."
    }
  },
  "additionalProperties": false
}
calculate_inflation annotations
{
  "title": "Inflation calculator (CPI)",
  "readOnlyHint": true,
  "openWorldHint": true,
  "idempotentHint": true,
  "destructiveHint": false
}
get_latest_cpi — Latest CPI release (live from BLS)
Advertised by the server during the last successful anonymous check.
Advertised read-onlyOpen-world

Returns the most recent CPI index values published by the Bureau of Labor Statistics, checked live against the BLS Public Data API: the latest month, the 12-month inflation rate for headline CPI-U, CPI-W and core CPI (less food and energy), the not seasonally adjusted 1-month change, and the year-to-date change. Use it to answer 'what is inflation right now'. If the live check fails it says so and falls back to bundled BLS data (through September 2026).

get_latest_cpi input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {}
}
get_latest_cpi annotations
{
  "title": "Latest CPI (live)",
  "readOnlyHint": true,
  "openWorldHint": true,
  "idempotentHint": true,
  "destructiveHint": false
}
get_inflation_rate — Annual inflation rate for a year
Advertised by the server during the last successful anonymous check.
Advertised read-onlyOpen-world

Returns the official U.S. inflation rate for a calendar year from BLS CPI data: annual-average change (BLS annual averages, including the 2025 average published despite the missing October 2025 index), December-to-December change, and for the current year the latest 12-month rate. Years 1914 to the present for CPI-U and CPI-W, 1958 onward for core CPI.

get_inflation_rate input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "year"
  ],
  "properties": {
    "year": {
      "type": "integer",
      "maximum": 2100,
      "minimum": 1914,
      "description": "Calendar year, e.g. 2025."
    },
    "series": {
      "enum": [
        "cpi_u",
        "cpi_w",
        "core"
      ],
      "type": "string",
      "description": "cpi_u (default, the headline CPI), cpi_w (wage earners, used for Social Security COLAs) or core (CPI-U less food and energy)."
    }
  },
  "additionalProperties": false
}
get_inflation_rate annotations
{
  "title": "Inflation rate by year",
  "readOnlyHint": true,
  "openWorldHint": true,
  "idempotentHint": true,
  "destructiveHint": false
}
compare_raise_to_inflation — Did a pay raise beat inflation?
Advertised by the server during the last successful anonymous check.
Advertised read-onlyOpen-world

Compares a pay change with CPI inflation over the same period using official BLS data through the latest published month (checked live). Returns the nominal raise, inflation, the real (inflation-adjusted) raise, the pay needed to keep pace, and the gain or shortfall. Works for salaries, hourly wages, rents or any recurring amount.

compare_raise_to_inflation input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "old_pay",
    "new_pay",
    "from"
  ],
  "properties": {
    "to": {
      "type": "string",
      "maxLength": 10,
      "minLength": 4,
      "description": "When to measure, default \"latest\": \"YYYY\" for the annual average, \"YYYY-MM\" for one month, or \"latest\"."
    },
    "from": {
      "type": "string",
      "maxLength": 10,
      "minLength": 4,
      "description": "When the old pay started, e.g. \"2024-01\": \"YYYY\" for the annual average, \"YYYY-MM\" for one month, or \"latest\"."
    },
    "series": {
      "enum": [
        "cpi_u",
        "cpi_w",
        "core"
      ],
      "type": "string",
      "description": "cpi_u (default, the headline CPI), cpi_w (wage earners, used for Social Security COLAs) or core (CPI-U less food and energy)."
    },
    "new_pay": {
      "type": "number",
      "maximum": 10000000000,
      "minimum": 0,
      "description": "Pay after the change, same unit."
    },
    "old_pay": {
      "type": "number",
      "maximum": 10000000000,
      "description": "Pay before the change (annual salary or hourly rate).",
      "exclusiveMinimum": 0
    }
  },
  "additionalProperties": false
}
compare_raise_to_inflation annotations
{
  "title": "Raise vs inflation",
  "readOnlyHint": true,
  "openWorldHint": true,
  "idempotentHint": true,
  "destructiveHint": false
}
calculate_social_security_cola — Social Security COLA from CPI-W
Advertised by the server during the last successful anonymous check.
Advertised read-onlyOpen-world

Computes the Social Security cost-of-living adjustment for a year with the statutory formula: average CPI-W for July-September of the prior year over the same quarter a year earlier, rounded to 0.1%. Uses official BLS CPI-W values (live check). Reproduces the 3.6% COLA for 2027 that SSA announced in October 2026, and shows the Q3 index values behind it. Covers 1976 onward.

calculate_social_security_cola input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "cola_year"
  ],
  "properties": {
    "cola_year": {
      "type": "integer",
      "maximum": 2100,
      "minimum": 1976,
      "description": "Year the COLA is paid, e.g. 2027 (measured on Q3 2026 CPI-W)."
    }
  },
  "additionalProperties": false
}
calculate_social_security_cola annotations
{
  "title": "Social Security COLA from CPI-W",
  "readOnlyHint": true,
  "openWorldHint": true,
  "idempotentHint": true,
  "destructiveHint": false
}

Prompts

Not advertised

No prompt definitions available.

Resources

Not advertised

No resource definitions available.

90-day uptime

A lightweight connection check about every six hours, sampled on hosts with many listings. It shows the server answered, not that its tools work.

Too few checks for a percentage yet (4 of 4 answered).

  1. 2026-11-07: 1 of 1 checks answered
  2. 2026-11-09: 2 of 2 checks answered
  3. 2026-11-10: 1 of 1 checks answered

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks
1 of 1 (100%)
Average latency
468 ms
95th percentile latency
468 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · probe · passed · 468 ms · metadata changed · 5 tool(s)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.
Claude Code configuration
claude mcp add --transport http cpi-inflation-calculator-mcp https://cpi-inflation-calculator-mcp.lipmichal.workers.dev/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).
Codex configuration
codex mcp add cpi-inflation-calculator-mcp --url https://cpi-inflation-calculator-mcp.lipmichal.workers.dev/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable cpi-inflation-calculator-mcp in your MCP settings.
Cursor configuration
{
  "mcpServers": {
    "cpi-inflation-calculator-mcp": {
      "url": "https://cpi-inflation-calculator-mcp.lipmichal.workers.dev/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).
Cline configuration
{
  "mcpServers": {
    "cpi-inflation-calculator-mcp": {
      "type": "streamableHttp",
      "url": "https://cpi-inflation-calculator-mcp.lipmichal.workers.dev/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start cpi-inflation-calculator-mcp and inspect its tools.
VS Code configuration
{
  "servers": {
    "cpi-inflation-calculator-mcp": {
      "type": "http",
      "url": "https://cpi-inflation-calculator-mcp.lipmichal.workers.dev/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.
Gemini CLI configuration
gemini mcp add --transport http cpi-inflation-calculator-mcp https://cpi-inflation-calculator-mcp.lipmichal.workers.dev/mcp

Claude Desktop

Open Claude Settings > Connectors > Add custom connector, enter this server URL and enable it for the conversation. This is a manual remote-connector handoff, not a desktop JSON configuration.
Claude Desktop configuration
https://cpi-inflation-calculator-mcp.lipmichal.workers.dev/mcp

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.
Windsurf configuration
{
  "mcpServers": {
    "cpi-inflation-calculator-mcp": {
      "serverUrl": "https://cpi-inflation-calculator-mcp.lipmichal.workers.dev/mcp"
    }
  }
}

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