# number_converter

A read tool on the Math MCP Server MCP server.

Agent View of the PolicyLayer registry record for `number_converter`. HTML page: https://policylayer.com/tools/111-test-111-math-mcp-server/number-converter

## Facts

- Tool: `number_converter`
- Server: Math MCP Server (`111-test-111/math-mcp-server`) — https://policylayer.com/tools/111-test-111-math-mcp-server.md
- Homepage: https://github.com/111-test-111/math-mcp-server
- Risk category: Read (Low risk)
- Registry record: grade C, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "number_converter",
    "arguments": {}
  }
}
```

## Why number_converter is rated Low

The tool name suggests data retrieval/transformation of numerical values without modification of persistent state. Although the description is empty and reduces confidence, the name implies a read-only computation. Converted numbers would be returned to the user without creating, modifying, deleting, or executing external operations. Severity is low because number conversion has minimal blast radius even if misused.

From the tool's own definition: "Tool name 'number_converter' suggests a utility that converts between number formats or bases (e.g., decimal to binary, hexadecimal conversion). No description provided to confirm function."

## Use case

AI agents call number_converter to retrieve information from Math MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Math MCP Server:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "number_converter": {}
  }
}
```

## Other tools on Math MCP Server (21)

- `cleanup_resources` — Destructive — https://policylayer.com/tools/111-test-111-math-mcp-server/cleanup-resources.md
- `basic_arithmetic` — Execute — https://policylayer.com/tools/111-test-111-math-mcp-server/basic-arithmetic.md
- `calculus_engine` — Execute — https://policylayer.com/tools/111-test-111-math-mcp-server/calculus-engine.md
- `expression_evaluator` — Execute — https://policylayer.com/tools/111-test-111-math-mcp-server/expression-evaluator.md
- `matrix_calculator` — Execute — https://policylayer.com/tools/111-test-111-math-mcp-server/matrix-calculator.md
- `number_theory_calculator` — Execute — https://policylayer.com/tools/111-test-111-math-mcp-server/number-theory-calculator.md
- `optimization_suite` — Execute — https://policylayer.com/tools/111-test-111-math-mcp-server/optimization-suite.md
- `regression_modeler` — Execute — https://policylayer.com/tools/111-test-111-math-mcp-server/regression-modeler.md
- `financial_calculator` — Financial — https://policylayer.com/tools/111-test-111-math-mcp-server/financial-calculator.md
- `complex_analysis_suite` — Other — https://policylayer.com/tools/111-test-111-math-mcp-server/complex-analysis-suite.md
- `geometry_calculator` — Other — https://policylayer.com/tools/111-test-111-math-mcp-server/geometry-calculator.md
- `graph_theory_suite` — Other — https://policylayer.com/tools/111-test-111-math-mcp-server/graph-theory-suite.md
- `mathematical_functions` — Other — https://policylayer.com/tools/111-test-111-math-mcp-server/mathematical-functions.md
- `precision_calculator` — Other — https://policylayer.com/tools/111-test-111-math-mcp-server/precision-calculator.md
- `signal_processing_calculator` — Other — https://policylayer.com/tools/111-test-111-math-mcp-server/signal-processing-calculator.md
- `number_properties` — Read — https://policylayer.com/tools/111-test-111-math-mcp-server/number-properties.md
- `probability_calculator` — Read — https://policylayer.com/tools/111-test-111-math-mcp-server/probability-calculator.md
- `statistics_analyzer` — Read — https://policylayer.com/tools/111-test-111-math-mcp-server/statistics-analyzer.md
- `unit_converter` — Read — https://policylayer.com/tools/111-test-111-math-mcp-server/unit-converter.md
- `create_and_save_chart` — Write — https://policylayer.com/tools/111-test-111-math-mcp-server/create-and-save-chart.md
- `plot_function_curve` — Write — https://policylayer.com/tools/111-test-111-math-mcp-server/plot-function-curve.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=111-test-111-math-mcp-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/111-test-111-math-mcp-server