# Get_a_list_of_planets

Get a list of planets matching specified parameters. Returns at most 30 results. To access more than 30 results, use the offset parameter to offset results in multiple API calls.

Agent View of the PolicyLayer registry record for `Get_a_list_of_planets`. HTML page: https://policylayer.com/tools/com-api-ninjas-mcp/get-a-list-of-planets

## Facts

- Tool: `Get_a_list_of_planets`
- Server: API Ninjas (`https://mcp.api-ninjas.com/mcp`) — https://policylayer.com/tools/com-api-ninjas-mcp.md
- Homepage: https://github.com/https://mcp.api-ninjas.com/mcp
- Risk category: Read (Low risk)
- Registry record: grade D, identity unverified
- Server auth posture: open
- Server rate-limited: no
- Parameters: 12
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `name` | string | no | The name of the planet. |
| `offset` | integer | no | Number of results to offset for pagination. |
| `max_mass` | number | no | Maximum mass of the planet in Jupiters. |
| `min_mass` | number | no | Minimum mass of the planet in Jupiters. |
| `max_period` | integer | no | Maximum orbital period of the planet in Earth days. |
| `max_radius` | number | no | Maximum average radius of the planet in Jupiters. |
| `min_period` | integer | no | Minimum orbital period of the planet in Earth days. |
| `min_radius` | number | no | Minimum average radius of the planet in Jupiters. |
| `max_temperature` | integer | no | Maximum average surface temperature of the planet in Kelvin. |
| `min_temperature` | integer | no | Minimum average surface temperature of the planet in Kelvin. |
| `max_semi_major_axis` | number | no | Maximum semi major axis of planet in astronomical units (AU). |
| `min_semi_major_axis` | number | no | Minimum semi major axis of planet in astronomical units (AU). |

Parameters from the server's own tool schema.

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

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

## Why Get_a_list_of_planets is rated Low

Even though Get_a_list_of_planets only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

Risk signals: High parameter count (14 properties)

## Use case

AI agents call Get_a_list_of_planets to retrieve information from API Ninjas 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 API Ninjas:

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

## Other tools on API Ninjas (243)

- `parseUserAgent` — Execute — https://policylayer.com/tools/com-api-ninjas-mcp/parseuseragent.md
- `airportDistance` — Read — https://policylayer.com/tools/com-api-ninjas-mcp/airportdistance.md
- `airportSuggest` — Read — https://policylayer.com/tools/com-api-ninjas-mcp/airportsuggest.md
- `analyzeSentiment` — Read — https://policylayer.com/tools/com-api-ninjas-mcp/analyzesentiment.md
- `binLookup` — Read — https://policylayer.com/tools/com-api-ninjas-mcp/binlookup.md
- `calculateCaloriesBurned` — Read — https://policylayer.com/tools/com-api-ninjas-mcp/calculatecaloriesburned.md
- `calculateIncomeTax` — Read — https://policylayer.com/tools/com-api-ninjas-mcp/calculateincometax.md
- `calculateMortgage` — Read — https://policylayer.com/tools/com-api-ninjas-mcp/calculatemortgage.md
- `calculateSalesTax` — Read — https://policylayer.com/tools/com-api-ninjas-mcp/calculatesalestax.md
- `checkDisposableEmail` — Read — https://policylayer.com/tools/com-api-ninjas-mcp/checkdisposableemail.md
- `classifyNaics` — Read — https://policylayer.com/tools/com-api-ninjas-mcp/classifynaics.md
- `closestAirport` — Read — https://policylayer.com/tools/com-api-ninjas-mcp/closestairport.md
- `computeTextSimilarity` — Read — https://policylayer.com/tools/com-api-ninjas-mcp/computetextsimilarity.md
- `detectFaces` — Read — https://policylayer.com/tools/com-api-ninjas-mcp/detectfaces.md
- `detectLanguage` — Read — https://policylayer.com/tools/com-api-ninjas-mcp/detectlanguage.md
- `detectObjects` — Read — https://policylayer.com/tools/com-api-ninjas-mcp/detectobjects.md
- `encodeText` — Read — https://policylayer.com/tools/com-api-ninjas-mcp/encodetext.md
- `extractTextFromImage` — Read — https://policylayer.com/tools/com-api-ninjas-mcp/extracttextfromimage.md
- `filterProfanity` — Read — https://policylayer.com/tools/com-api-ninjas-mcp/filterprofanity.md
- `findSwiftCodes` — Read — https://policylayer.com/tools/com-api-ninjas-mcp/findswiftcodes.md
- `Get_a_list_of_stars` — Read — https://policylayer.com/tools/com-api-ninjas-mcp/get-a-list-of-stars.md
- `Get_ZIP_Code_details` — Read — https://policylayer.com/tools/com-api-ninjas-mcp/get-zip-code-details.md
- `getAdvice` — Read — https://policylayer.com/tools/com-api-ninjas-mcp/getadvice.md
- `getAircraft` — Read — https://policylayer.com/tools/com-api-ninjas-mcp/getaircraft.md
- `getAirlines` — Read — https://policylayer.com/tools/com-api-ninjas-mcp/getairlines.md
- `getAirports` — Read — https://policylayer.com/tools/com-api-ninjas-mcp/getairports.md
- `getAirportsList` — Read — https://policylayer.com/tools/com-api-ninjas-mcp/getairportslist.md
- `getAirQuality` — Read — https://policylayer.com/tools/com-api-ninjas-mcp/getairquality.md
- `getAllCatNames` — Read — https://policylayer.com/tools/com-api-ninjas-mcp/getallcatnames.md
- `getAllCountries` — Read — https://policylayer.com/tools/com-api-ninjas-mcp/getallcountries.md
- …and 213 more: https://policylayer.com/tools/com-api-ninjas-mcp.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=com-api-ninjas-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/com-api-ninjas-mcp