# pound.one (remote · pound.one)

UK inflation, take-home pay and public spending calculators with sources and shareable results.

- Trust score: 85/100 (high trust)
- Change this week: +1
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `pound.one`: 85/100 (this document), [markdown](https://verifymcp.io/servers/one-pound-pound-one/pound.md), [page](https://verifymcp.io/servers/one-pound-pound-one/pound)

## Channel facts

- Endpoint: `https://pound.one/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-11-05.

- **Endpoint Security**: 74/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Nothing on it is marked destructive, but we can't show that an anonymous caller can only read: full credit needs the server to list at least one tool and every tool to be verifiably read-only. We use a best-effort check of tool names and descriptions to tell read-only tools from tools that change things, so some genuinely read-only tools may not get full credit. Names that start with a read verb (get, list, read, search and similar) and accurate readOnlyHint annotations help. Meet that to earn full credit, or require authorisation.
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 76/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 380 tokens (~126/item across 3 items; 3 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 100/100
  - No destabilizing schema changes in the last 30 days.
- **Tool Coverage**: 97/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 89% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 4 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### How do I install the pound.one MCP server?

pound.one is a hosted endpoint at https://pound.one/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http one-pound-pound-one 'https://pound.one/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "one-pound-pound-one": {
      "url": "https://pound.one/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "one-pound-pound-one": {
      "type": "http",
      "url": "https://pound.one/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.one-pound-pound-one]
url = "https://pound.one/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "one-pound-pound-one": {
      "type": "remote",
      "url": "https://pound.one/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add one-pound-pound-one --url 'https://pound.one/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  one-pound-pound-one:
    url: "https://pound.one/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "one-pound-pound-one": {
      "Transport": "http",
      "Url": "https://pound.one/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add one-pound-pound-one -t streamable-http -u 'https://pound.one/mcp'
```

### Other

```json
{
  "mcpServers": {
    "one-pound-pound-one": {
      "type": "http",
      "url": "https://pound.one/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-11-01 (score 85, 0)

- [security] Stability: 0.97 → pass

### 2026-10-31 (score 85, +1)

No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-29 (score 84, +1)

No change was recorded against any check on this day. Stability & Change Management went from 87 to 90. That category is still filling its 30-day observation window: 26 days of observed history at the previous scan, 27 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-27 (score 83, +1)

No change was recorded against any check on this day. Stability & Change Management went from 80 to 83. That category is still filling its 30-day observation window: 24 days of observed history at the previous scan, 25 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-25 (score 82, +1)

No change was recorded against any check on this day. Stability & Change Management went from 73 to 77. That category is still filling its 30-day observation window: 22 days of observed history at the previous scan, 23 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-23 (score 81, +1)

No change was recorded against any check on this day. Stability & Change Management went from 67 to 70. That category is still filling its 30-day observation window: 20 days of observed history at the previous scan, 21 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-21 (score 80, +1)

No change was recorded against any check on this day. Stability & Change Management went from 60 to 63. That category is still filling its 30-day observation window: 18 days of observed history at the previous scan, 19 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-19 (score 79, +1)

No change was recorded against any check on this day. Stability & Change Management went from 53 to 57. That category is still filling its 30-day observation window: 16 days of observed history at the previous scan, 17 at this one. The score rises as the window fills, whether or not the server changes.

## MCP tools (3)

### `adjust_for_inflation` (~110 tokens)

Adjust pounds for UK inflation

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 parameters:

- `amount` (number, required): Amount in GBP; rounded to the nearest penny.
- `from` (integer, required): Starting calendar year.
- `series` (string): Inflation measure; RPI has the longer history.
- `to`: Ending calendar year, or latest available data.

Output parameters:

- `amount` (number)
- `annualised` (number|null)
- `assumptions` (array)
- `buys` (array)
- `card` (string)
- `caveats` (array)
- `currency` (string)
- `data` (object)
- `factor` (number)
- `from` (integer)
- `headline` (string)
- `house`
- `housePerWage`
- `pctChange` (number)
- `result` (number): Equivalent amount in GBP.
- `series` (string)
- `seriesLabel` (string)
- `shareUrl` (string)
- `sources` (array)
- `to`
- `url` (string)
- `wage`
- `wageEquivalent` (number|null)

### `calculate_take_home` (~125 tokens)

Calculate annual take-home pay

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 parameters:

- `amount` (integer, required): Annual gross salary (gross mode), or annual target take-home pay (net mode), in whole GBP. Multiply monthly figures by 12 first.
- `mode` (string)
- `region` (string, required): Confirm the tax jurisdiction; Scottish income tax is not supported.

Output parameters:

- `allInRate` (number)
- `amount` (number)
- `assumptions` (array)
- `bands` (array)
- `card` (string)
- `caveats` (array)
- `costToEmployer` (number)
- `currency` (string)
- `data` (object)
- `effectiveRate` (number)
- `employerNi` (number)
- `gross` (number)
- `headline` (string)
- `inputAmount` (number)
- `marginal` (number)
- `mode` (string)
- `monthly` (number)
- `net` (number)
- `netRoundingDifference` (number)
- `ni` (number)
- `pa` (number)
- `percentile` (object)
- `period` (string)
- `region` (string)
- `requestedAnnualNet` (number)
- `rules` (string)
- `shareUrl` (string)
- `sources` (array)
- `tax` (number)
- `taxable` (number)
- `url` (string)
- `weekly` (number)

### `compare_public_spending` (~89 tokens)

Put a sum beside public spending

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 parameters:

- `amount` (number, required): Amount in GBP.
- `budget` (string): Budget to compare against; response also includes other budgets.

Output parameters:

- `amount` (number)
- `annual` (number)
- `assumptions` (array)
- `card` (string)
- `caveats` (array)
- `currency` (string)
- `data` (object)
- `headline` (string)
- `key` (string)
- `label` (string)
- `others` (array)
- `perDay` (number)
- `perSecond` (number)
- `scope` (string)
- `seconds` (number)
- `share` (number): Fraction of the selected annual budget, not a percentage.
- `shareUrl` (string)
- `slug` (string)
- `source` (object)
- `sources` (array)
- `text` (string)
- `url` (string)
- `verb` (string)
- `verification` (object)
- `year` (string)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/one-pound-pound-one/pound#diagnostics

## Score history

- 2026-11-05: 85
- 2026-11-04: 85
- 2026-11-03: 85
- 2026-11-02: 85
- 2026-11-01: 85
- 2026-10-31: 85
- 2026-10-30: 84
- 2026-10-29: 84
- 2026-10-28: 83
- 2026-10-27: 83
- 2026-10-26: 82
- 2026-10-25: 82
- 2026-10-24: 81
- 2026-10-23: 81
- 2026-10-22: 80
- 2026-10-21: 80
- 2026-10-20: 79
- 2026-10-19: 79
- 2026-10-18: 78
- 2026-10-17: 78
- 2026-10-16: 78
- 2026-10-15: 77
- 2026-10-14: 77
- 2026-10-13: 76
- 2026-10-12: 76
- 2026-10-10: 75
- 2026-10-06: 73
- 2026-10-04: 72
- 2026-10-03: 71
- 2026-10-02: 71

## Common questions

### What is the pound.one MCP server?

pound.one is an MCP server listed in the public MCP registry as one.pound/pound-one. UK inflation, take-home pay and public spending calculators with sources and shareable results. This page covers its hosted endpoint (https://pound.one/mcp).

### Is the pound.one MCP server safe to use?

pound.one scores 85 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the pound.one MCP server expose?

pound.one exposes 3 tools: adjust_for_inflation, calculate_take_home, compare_public_spending. Their descriptions and schemas cost roughly 324 tokens of context every time the server is loaded.

### Does the pound.one MCP server require authentication?

No. We connected to pound.one without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the pound.one MCP server still maintained?

pound.one is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What did VerifyMCP test on the pound.one MCP server?

VerifyMCP ran 13 checks on pound.one, covering TLS certificate, Authorization, HTTPS, HSTS header and 9 more. Supply Chain Security and Provenance & Transparency do not apply to a hosted endpoint, so they were not tested. The score does not measure everything, and the scoring documentation lists what it leaves out.

## Links

- Remote endpoint: https://pound.one/mcp
- Website: https://pound.one/mcp/docs
- Changelog RSS feed: https://verifymcp.io/servers/one-pound-pound-one/pound.xml
- Changelog JSON feed: https://verifymcp.io/servers/one-pound-pound-one/pound/changelog.json
- Trust report (JSON): https://verifymcp.io/servers/one-pound-pound-one/pound.json
- HTML version of this page: https://verifymcp.io/servers/one-pound-pound-one/pound