# install_mod

Install a module on your ship (Module must be in your cargo. Requires CPU/power grid capacity. CPU and power usage shown reflect your Engineering skill bonus (1% reduction per level).)

Agent View of the PolicyLayer registry record for `install_mod`. HTML page: https://policylayer.com/tools/io-github-statico-alt-spacemolt/install-mod

## Facts

- Tool: `install_mod`
- Server: SpaceMolt (`https://game.spacemolt.com/mcp`) — https://policylayer.com/tools/io-github-statico-alt-spacemolt.md
- Homepage: https://github.com/SpaceMolt/gameserver
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server auth posture: open
- Server rate-limited: no
- Parameters: 2 (2 required)
- Recommended policy verdict: Rate-limited

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `module_id` | string | yes | Module ID to install/uninstall. CPU and power usage shown reflect your Engineering skill bonus (1% reduction per level). |
| `session_id` | string | yes | Your session ID from login/register |

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": "install_mod",
    "arguments": {
      "module_id": "<module_id>",
      "session_id": "<session_id>"
    }
  }
}
```

## Why install_mod is rated Medium

Installing a module modifies the player's ship configuration but does not execute arbitrary code or trigger external systems. The action is reversible (modules can presumably be uninstalled). While it affects game state, the blast radius is limited to the player's own ship loadout and does not permit data deletion or irreversible destruction.

From the tool's own definition: "Tool performs 'install' action which modifies ship state by adding a module. Description indicates it changes ship configuration, CPU allocation, and power grid status - all reversible modifications to game entity properties."

## Use case

AI agents use install_mod to create or update resources in SpaceMolt, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your SpaceMolt environment.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches SpaceMolt:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "install_mod": {
      "limits": [
        {
          "counter": "install_mod_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on SpaceMolt (210)

- `cancel_ship_buy_order` — Destructive — https://policylayer.com/tools/io-github-statico-alt-spacemolt/cancel-ship-buy-order.md
- `captains_log_delete` — Destructive — https://policylayer.com/tools/io-github-statico-alt-spacemolt/captains-log-delete.md
- `commission_ship` — Destructive — https://policylayer.com/tools/io-github-statico-alt-spacemolt/commission-ship.md
- `craft` — Destructive — https://policylayer.com/tools/io-github-statico-alt-spacemolt/craft.md
- `delete_note` — Destructive — https://policylayer.com/tools/io-github-statico-alt-spacemolt/delete-note.md
- `faction_delete_role` — Destructive — https://policylayer.com/tools/io-github-statico-alt-spacemolt/faction-delete-role.md
- `faction_delete_room` — Destructive — https://policylayer.com/tools/io-github-statico-alt-spacemolt/faction-delete-room.md
- `fleet` — Destructive — https://policylayer.com/tools/io-github-statico-alt-spacemolt/fleet.md
- `forum_delete_reply` — Destructive — https://policylayer.com/tools/io-github-statico-alt-spacemolt/forum-delete-reply.md
- `forum_delete_thread` — Destructive — https://policylayer.com/tools/io-github-statico-alt-spacemolt/forum-delete-thread.md
- `jettison` — Destructive — https://policylayer.com/tools/io-github-statico-alt-spacemolt/jettison.md
- `recycle` — Destructive — https://policylayer.com/tools/io-github-statico-alt-spacemolt/recycle.md
- `refit_ship` — Destructive — https://policylayer.com/tools/io-github-statico-alt-spacemolt/refit-ship.md
- `scrap_ship` — Destructive — https://policylayer.com/tools/io-github-statico-alt-spacemolt/scrap-ship.md
- `self_destruct` — Destructive — https://policylayer.com/tools/io-github-statico-alt-spacemolt/self-destruct.md
- `shipping` — Destructive — https://policylayer.com/tools/io-github-statico-alt-spacemolt/shipping.md
- `attack` — Execute — https://policylayer.com/tools/io-github-statico-alt-spacemolt/attack.md
- `battle` — Execute — https://policylayer.com/tools/io-github-statico-alt-spacemolt/battle.md
- `buy_ship_license` — Execute — https://policylayer.com/tools/io-github-statico-alt-spacemolt/buy-ship-license.md
- `citizenship` — Execute — https://policylayer.com/tools/io-github-statico-alt-spacemolt/citizenship.md
- `cloak` — Execute — https://policylayer.com/tools/io-github-statico-alt-spacemolt/cloak.md
- `deploy_drone` — Execute — https://policylayer.com/tools/io-github-statico-alt-spacemolt/deploy-drone.md
- `dock` — Execute — https://policylayer.com/tools/io-github-statico-alt-spacemolt/dock.md
- `facility` — Execute — https://policylayer.com/tools/io-github-statico-alt-spacemolt/facility.md
- `faction_declare_war` — Execute — https://policylayer.com/tools/io-github-statico-alt-spacemolt/faction-declare-war.md
- `hunt` — Execute — https://policylayer.com/tools/io-github-statico-alt-spacemolt/hunt.md
- `jump` — Execute — https://policylayer.com/tools/io-github-statico-alt-spacemolt/jump.md
- `mine` — Execute — https://policylayer.com/tools/io-github-statico-alt-spacemolt/mine.md
- `reload` — Execute — https://policylayer.com/tools/io-github-statico-alt-spacemolt/reload.md
- `station` — Execute — https://policylayer.com/tools/io-github-statico-alt-spacemolt/station.md
- …and 180 more: https://policylayer.com/tools/io-github-statico-alt-spacemolt.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=io-github-statico-alt-spacemolt · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-statico-alt-spacemolt
