# io.github.tech-sushant/calculator-mcp (npm · @tech-sushant/calculator-mcp)

A simple Model Context Protocol calculator server

- Trust score: 63/100 (medium)
- Change this week: +18
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-07

## Components

- npm · `@tech-sushant/calculator-mcp`: 63/100 (this document), [markdown](https://verifymcp.io/servers/tech-sushant-calculator-mcp/tech-sushant-calculator-mcp.md), [page](https://verifymcp.io/servers/tech-sushant-calculator-mcp/tech-sushant-calculator-mcp)

## Channel facts

- Registry: `npm`
- Package: `@tech-sushant/calculator-mcp`
- Version: `1.0.3`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, 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 2026-08-07.

- **Supply Chain Security**: 70/100
  - No malware found by supply-chain analysis.
  - CVE check failed: a known high-severity CVE affects @modelcontextprotocol/sdk 0.4.0, a direct dependency. A fixed version is available.
  - No install/post-install scripts declared.
  - Dependency health was assessed across the 13 of 14 dependencies we could resolve, so this covers what we could see, not the whole tree.
- **Provenance & Transparency**: 44/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 282 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 83/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 207 tokens (~34/item across 6 items; 6 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 37/100
  - Stability observed for 11 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Capabilities**: 20/100
  - Spec-recency check failed: implements MCP spec 2024-11-05; the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add tech-sushant-calculator-mcp -- npx -y @tech-sushant/calculator-mcp
```

### Codex

```bash
codex mcp add tech-sushant-calculator-mcp -- npx -y @tech-sushant/calculator-mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "tech-sushant-calculator-mcp": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@tech-sushant/calculator-mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add tech-sushant-calculator-mcp --command npx --arg -y --arg @tech-sushant/calculator-mcp
```

### Hermes

```yaml
mcp_servers:
  tech-sushant-calculator-mcp:
    command: "npx"
    args: ["-y", "@tech-sushant/calculator-mcp"]
```

### Other

```json
{
  "mcpServers": {
    "tech-sushant-calculator-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@tech-sushant/calculator-mcp"
      ]
    }
  }
}
```

## 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.

### 2026-08-07 (score 63, +1)

- [functional regression] Security disclosure: unverified → fail

### 2026-08-06 (score 62, 0)

- [functional regression] Security disclosure: fail → unverified

### 2026-08-05 (score 62, +1)

No change was recorded against any check on this day. Stability & Change Management went from 27 to 30. That category is still filling its 30-day observation window: 8 days of observed history at the previous scan, 9 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-03 (score 61, +1)

No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-02 (score 60, +15)

- [security improvement] Malware scan: unverified → pass
- [functional improvement] Stability: unverified → 0.20

### 2026-07-31 (score 45, −12)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 57, −18)

- [security regression] Malware scan: pass → unverified

### 2026-07-27 (score 75, +47)

- [security regression] CVE-2025-66414 affects this package: high
- [security regression] Provenance: unverified → fail
- [security regression] Known CVEs: unverified → fail
- [security improvement] Install scripts: unverified → pass
- [functional regression] Security disclosure: unverified → fail
- [functional improvement] Tool coverage: unverified → 100
- [functional improvement] License: unverified → pass
- [functional improvement] Maintenance: unverified → pass
- [functional] First check of Tool coverage: 100
- [functional] First check of Schema quality: pass
- [functional] First check of Schema quality: fail
- [functional] First check of Schema quality: excellent
- [functional] Licence: MIT

## MCP tools (6)

### `add` (~34 tokens)

Add two numbers together

Input parameters:

- `a` (number, required): First number to add
- `b` (number, required): Second number to add

### `subtract` (~36 tokens)

Subtract second number from first number

Input parameters:

- `a` (number, required): Number to subtract from
- `b` (number, required): Number to subtract

### `multiply` (~34 tokens)

Multiply two numbers together

Input parameters:

- `a` (number, required): First number to multiply
- `b` (number, required): Second number to multiply

### `divide` (~41 tokens)

Divide first number by second number

Input parameters:

- `a` (number, required): Dividend (number to be divided)
- `b` (number, required): Divisor (number to divide by)

### `power` (~35 tokens)

Raise first number to the power of second number

Input parameters:

- `base` (number, required): Base number
- `exponent` (number, required): Exponent

### `sqrt` (~27 tokens)

Calculate square root of a number

Input parameters:

- `number` (number, required): Number to calculate square root of

## Diagnostics

Captured diagnostic sections: Provenance, Vulnerabilities, Dependencies. The full working is on the page: https://verifymcp.io/servers/tech-sushant-calculator-mcp/tech-sushant-calculator-mcp#diagnostics

## Score history

- 2026-08-07: 63
- 2026-08-06: 62
- 2026-08-05: 62
- 2026-08-04: 61
- 2026-08-03: 61
- 2026-08-02: 60
- 2026-08-01: 45
- 2026-07-31: 45
- 2026-07-30: 57
- 2026-07-28: 75
- 2026-07-27: 75
- 2026-07-26: 28

## Links

- npm package: https://www.npmjs.com/package/@tech-sushant/calculator-mcp
- Socket report: https://socket.dev/npm/package/@tech-sushant/calculator-mcp
- Repository: https://github.com/tech-sushant/calculator-mcp
- Changelog RSS feed: https://verifymcp.io/servers/tech-sushant-calculator-mcp/tech-sushant-calculator-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/tech-sushant-calculator-mcp/tech-sushant-calculator-mcp.json
- HTML version of this page: https://verifymcp.io/servers/tech-sushant-calculator-mcp/tech-sushant-calculator-mcp