pound.one
UK inflation, take-home pay and public spending calculators with sources and shareable results.
Should I use this
Quality & Safety
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"pound-one": {
"url": "https://pound.one/mcp"
}
}
}Remote endpoints
https://pound.one/mcpstreamable-httpWhat it can do
Tool inventory
Tools (3)
🟢adjust_for_inflation(amount, from, to, series)
Compare GBP purchasing power between years, with prices, wages and housing context. RPI covers 1948 onwards; CPI covers 1988 onwards. "now" means the latest stored observation, not a live price.
Input Schema
{
"type": "object",
"properties": {
"amount": {
"type": "number",
"minimum": 0.01,
"maximum": 1000000000000,
"description": "Amount in GBP; rounded to the nearest penny."
},
"from": {
"type": "integer",
"minimum": 1948,
"maximum": 2026,
"description": "Starting calendar year."
},
"to": {
"default": "now",
"description": "Ending calendar year, or latest available data.",
"anyOf": [
{
"type": "integer",
"minimum": 1948,
"maximum": 2026
},
{
"type": "string",
"const": "now"
}
]
},
"series": {
"default": "rpi",
"description": "Inflation measure; RPI has the longer history.",
"type": "string",
"enum": [
"rpi",
"cpi"
]
}
},
"required": [
"amount",
"from"
],
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}🟢calculate_take_home(amount, mode, region)
Employee income tax and National Insurance for 2026/27, or the gross salary needed for a target net income. England, Wales and Northern Ireland only; Scotland is unsupported. Excludes pensions, student loans, benefits and other income. Includes a historical UK taxpayer income rank.
Input Schema
{
"type": "object",
"properties": {
"amount": {
"type": "integer",
"minimum": 1,
"maximum": 1000000000,
"description": "Annual gross salary (gross mode), or annual target take-home pay (net mode), in whole GBP. Multiply monthly figures by 12 first."
},
"mode": {
"default": "gross",
"type": "string",
"enum": [
"gross",
"net"
]
},
"region": {
"type": "string",
"enum": [
"england",
"wales",
"northern_ireland"
],
"description": "Confirm the tax jurisdiction; Scottish income tax is not supported."
}
},
"required": [
"amount",
"region"
],
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}🟢compare_public_spending(amount, budget)
Express a GBP amount as a share and duration of a stored 2025-26 public budget, with comparisons against other budgets. The NHS comparison uses England's DHSC day-to-day budget as a proxy. These are illustrative averages, not live spending rates.
Input Schema
{
"type": "object",
"properties": {
"amount": {
"type": "number",
"minimum": 0.01,
"maximum": 1000000000000000,
"description": "Amount in GBP."
},
"budget": {
"default": "nhs",
"description": "Budget to compare against; response also includes other budgets.",
"type": "string",
"enum": [
"everything",
"nhs",
"pensions",
"welfare",
"interest",
"education",
"defence",
"borrowing",
"taxes",
"monarchy"
]
}
},
"required": [
"amount"
],
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}Community
Evidence