# fleets_stopInstance

Stop admitted Henry compute and retain its data (POST /v1/fleets/instances/{instance_id}/stop) [service status: unverified]

Agent View of the PolicyLayer registry record for `fleets_stopInstance`. HTML page: https://policylayer.com/tools/lifesi-genesis-mcp/fleets-stopinstance

## Facts

- Tool: `fleets_stopInstance`
- Server: Genesis (`@lifesi/genesis-mcp`) — https://policylayer.com/tools/lifesi-genesis-mcp.md
- Install: `npx -y @lifesi/genesis-mcp`
- Homepage: https://www.npmjs.com/package/@lifesi/genesis-mcp
- Risk category: Execute (High risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 2 (1 required)
- Recommended policy verdict: Rate-limited

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `instance_id` | string | yes |  |
| `idempotency_key` | string | no | Optional canonical UUID4 for this explicit operation; retain it after an uncertain reply. Carries no authority. |

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": "fleets_stopInstance",
    "arguments": {
      "instance_id": "<instance_id>"
    }
  }
}
```

## Why fleets_stopInstance is rated High

fleets_stopInstance triggers real processes with real consequences. An agent gone sideways doesn't fire it once. It starts dozens of builds, sends mass notifications, or burns through compute before anyone looks up.

## Use case

AI agents invoke fleets_stopInstance to trigger actions in Genesis. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

## Recommended policy (PolicyLayer)

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

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "fleets_stopInstance": {
      "limits": [
        {
          "counter": "fleets_stopinstance_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Genesis (251)

- `beacons_revokeBridgeDevice` — Destructive — https://policylayer.com/tools/lifesi-genesis-mcp/beacons-revokebridgedevice.md
- `dials_deleteNumber` — Destructive — https://policylayer.com/tools/lifesi-genesis-mcp/dials-deletenumber.md
- `fleets_cancelTask` — Destructive — https://policylayer.com/tools/lifesi-genesis-mcp/fleets-canceltask.md
- `fleets_deleteConnection` — Destructive — https://policylayer.com/tools/lifesi-genesis-mcp/fleets-deleteconnection.md
- `flocks_revokeNode` — Destructive — https://policylayer.com/tools/lifesi-genesis-mcp/flocks-revokenode.md
- `flocks_rotateNodeCredential` — Destructive — https://policylayer.com/tools/lifesi-genesis-mcp/flocks-rotatenodecredential.md
- `hives_cancel_deployment` — Destructive — https://policylayer.com/tools/lifesi-genesis-mcp/hives-cancel-deployment.md
- `hives_delete_bucket` — Destructive — https://policylayer.com/tools/lifesi-genesis-mcp/hives-delete-bucket.md
- `hives_delete_cron` — Destructive — https://policylayer.com/tools/lifesi-genesis-mcp/hives-delete-cron.md
- `hives_delete_deployment` — Destructive — https://policylayer.com/tools/lifesi-genesis-mcp/hives-delete-deployment.md
- `hives_delete_dlq_native_queue` — Destructive — https://policylayer.com/tools/lifesi-genesis-mcp/hives-delete-dlq-native-queue.md
- `hives_delete_function` — Destructive — https://policylayer.com/tools/lifesi-genesis-mcp/hives-delete-function.md
- `hives_delete_native_queue` — Destructive — https://policylayer.com/tools/lifesi-genesis-mcp/hives-delete-native-queue.md
- `hives_delete_native_topic` — Destructive — https://policylayer.com/tools/lifesi-genesis-mcp/hives-delete-native-topic.md
- `hives_delete_object` — Destructive — https://policylayer.com/tools/lifesi-genesis-mcp/hives-delete-object.md
- `hives_delete_object_by_key` — Destructive — https://policylayer.com/tools/lifesi-genesis-mcp/hives-delete-object-by-key.md
- `hives_delete_secret` — Destructive — https://policylayer.com/tools/lifesi-genesis-mcp/hives-delete-secret.md
- `hives_delete_volume` — Destructive — https://policylayer.com/tools/lifesi-genesis-mcp/hives-delete-volume.md
- `hives_detach_context_project` — Destructive — https://policylayer.com/tools/lifesi-genesis-mcp/hives-detach-context-project.md
- `hives_marketplace_uninstall` — Destructive — https://policylayer.com/tools/lifesi-genesis-mcp/hives-marketplace-uninstall.md
- `hives_purge_dlq_native_queue` — Destructive — https://policylayer.com/tools/lifesi-genesis-mcp/hives-purge-dlq-native-queue.md
- `hives_purge_native_queue` — Destructive — https://policylayer.com/tools/lifesi-genesis-mcp/hives-purge-native-queue.md
- `hives_remove_native_queue_consumer` — Destructive — https://policylayer.com/tools/lifesi-genesis-mcp/hives-remove-native-queue-consumer.md
- `hives_unsubscribe_native_topic` — Destructive — https://policylayer.com/tools/lifesi-genesis-mcp/hives-unsubscribe-native-topic.md
- `iam_revokeApiKey` — Destructive — https://policylayer.com/tools/lifesi-genesis-mcp/iam-revokeapikey.md
- `relays_deleteRecord` — Destructive — https://policylayer.com/tools/lifesi-genesis-mcp/relays-deleterecord.md
- `runner_cancelJob` — Destructive — https://policylayer.com/tools/lifesi-genesis-mcp/runner-canceljob.md
- `dials_deployWorkflow` — Execute — https://policylayer.com/tools/lifesi-genesis-mcp/dials-deployworkflow.md
- `fleets_launchAgent` — Execute — https://policylayer.com/tools/lifesi-genesis-mcp/fleets-launchagent.md
- `fleets_startInstance` — Execute — https://policylayer.com/tools/lifesi-genesis-mcp/fleets-startinstance.md
- …and 221 more: https://policylayer.com/tools/lifesi-genesis-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=lifesi-genesis-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/lifesi-genesis-mcp