# gh_component_list

List components currently on the active canvas (optionally filtered).

Agent View of the PolicyLayer registry record for `gh_component_list`. HTML page: https://policylayer.com/tools/easehee-rhino-mcp/gh-component-list

## Facts

- Tool: `gh_component_list`
- Server: Rhino (`easehee/rhino-mcp`) — https://policylayer.com/tools/easehee-rhino-mcp.md
- Homepage: https://github.com/EaseHee/rhino-mcp
- Risk category: Read (Low risk)
- Registry record: grade F, 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": "gh_component_list",
    "arguments": {}
  }
}
```

## Why gh_component_list is rated Low

This tool performs a read-only operation that queries and returns information about existing components in Grasshopper. It has no side effects—it does not create, modify, delete, or execute operations. The filtered listing capability is still a retrieval operation. The blast radius of misuse is minimal as it only exposes existing component metadata.

From the tool's own definition: "Tool description: 'List components currently on the active canvas (optionally filtered).' The verb 'list' indicates a query operation that retrieves information without modification."

## Use case

AI agents call gh_component_list to retrieve information from Rhino 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 Rhino:

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

## Other tools on Rhino (244)

- `gh_delete_component` — Destructive — https://policylayer.com/tools/easehee-rhino-mcp/gh-delete-component.md
- `gh_reset` — Destructive — https://policylayer.com/tools/easehee-rhino-mcp/gh-reset.md
- `rhino_bim_pset_delete` — Destructive — https://policylayer.com/tools/easehee-rhino-mcp/rhino-bim-pset-delete.md
- `rhino_layer_delete` — Destructive — https://policylayer.com/tools/easehee-rhino-mcp/rhino-layer-delete.md
- `rhino_object_delete` — Destructive — https://policylayer.com/tools/easehee-rhino-mcp/rhino-object-delete.md
- `rhino_render_queue_cancel` — Destructive — https://policylayer.com/tools/easehee-rhino-mcp/rhino-render-queue-cancel.md
- `gh_new_canvas` — Execute — https://policylayer.com/tools/easehee-rhino-mcp/gh-new-canvas.md
- `gh_run` — Execute — https://policylayer.com/tools/easehee-rhino-mcp/gh-run.md
- `gh_run_template` — Execute — https://policylayer.com/tools/easehee-rhino-mcp/gh-run-template.md
- `rhino_annotation_scale_bar` — Execute — https://policylayer.com/tools/easehee-rhino-mcp/rhino-annotation-scale-bar.md
- `rhino_attractor_displace_points` — Execute — https://policylayer.com/tools/easehee-rhino-mcp/rhino-attractor-displace-points.md
- `rhino_axis_ribs` — Execute — https://policylayer.com/tools/easehee-rhino-mcp/rhino-axis-ribs.md
- `rhino_batch_call` — Execute — https://policylayer.com/tools/easehee-rhino-mcp/rhino-batch-call.md
- `rhino_boolean_intersection` — Execute — https://policylayer.com/tools/easehee-rhino-mcp/rhino-boolean-intersection.md
- `rhino_boolean_union` — Execute — https://policylayer.com/tools/easehee-rhino-mcp/rhino-boolean-union.md
- `rhino_bridge_select_instance` — Execute — https://policylayer.com/tools/easehee-rhino-mcp/rhino-bridge-select-instance.md
- `rhino_display_mode_set` — Execute — https://policylayer.com/tools/easehee-rhino-mcp/rhino-display-mode-set.md
- `rhino_drawing_section_cut` — Execute — https://policylayer.com/tools/easehee-rhino-mcp/rhino-drawing-section-cut.md
- `rhino_execute_csharp` — Execute — https://policylayer.com/tools/easehee-rhino-mcp/rhino-execute-csharp.md
- `rhino_execute_python` — Execute — https://policylayer.com/tools/easehee-rhino-mcp/rhino-execute-python.md
- `rhino_mesh_boolean_union` — Execute — https://policylayer.com/tools/easehee-rhino-mcp/rhino-mesh-boolean-union.md
- `rhino_network_surface` — Execute — https://policylayer.com/tools/easehee-rhino-mcp/rhino-network-surface.md
- `rhino_object_select` — Execute — https://policylayer.com/tools/easehee-rhino-mcp/rhino-object-select.md
- `rhino_render_queue_submit` — Execute — https://policylayer.com/tools/easehee-rhino-mcp/rhino-render-queue-submit.md
- `rhino_render_to_file` — Execute — https://policylayer.com/tools/easehee-rhino-mcp/rhino-render-to-file.md
- `rhino_section` — Execute — https://policylayer.com/tools/easehee-rhino-mcp/rhino-section.md
- `rhino_section_at_axis` — Execute — https://policylayer.com/tools/easehee-rhino-mcp/rhino-section-at-axis.md
- `rhino_shell` — Execute — https://policylayer.com/tools/easehee-rhino-mcp/rhino-shell.md
- `rhino_skin_from_sections` — Execute — https://policylayer.com/tools/easehee-rhino-mcp/rhino-skin-from-sections.md
- `rhino_taper` — Execute — https://policylayer.com/tools/easehee-rhino-mcp/rhino-taper.md
- …and 214 more: https://policylayer.com/tools/easehee-rhino-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=easehee-rhino-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/easehee-rhino-mcp