# create_cylinder A write tool on the Aos MCP server. Agent View of the PolicyLayer registry record for `create_cylinder`. HTML page: https://policylayer.com/tools/hybridlabor-api-aos/create-cylinder ## Facts - Tool: `create_cylinder` - Server: Aos (`@hybridlabor-api/aos`) — https://policylayer.com/tools/hybridlabor-api-aos.md - Install: `npx -y @hybridlabor-api/aos` - Homepage: git+https://github.com/hybridlabor-api/aos.git - Risk category: Write (Medium risk) - Registry record: grade F, identity unverified - Server rate-limited: no - Parameters: 0 - Recommended policy verdict: Rate-limited ## Example call (MCP tools/call, JSON-RPC 2.0) ```json { "jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": { "name": "create_cylinder", "arguments": {} } } ``` ## Why create_cylinder is rated Medium The tool creates a new geometric object (cylinder) in FreeCAD, which is a reversible Write operation. It modifies the design state by adding geometry, but the change can be undone. Severity is medium because misuse could waste computational resources or pollute the model with unwanted geometry, but the action is recoverable. Confidence is reduced from 0.85 to 0.75 due to the empty description. From the tool's own definition: "Tool name 'create_cylinder' indicates creation of a 3D model object in FreeCAD. Description is empty but context from sibling tools (add_sketch_arc, add_sketch_line, etc.) and the server's purpose ('3D modeling') clarifies this is a modeling operation." ## Use case AI agents use create_cylinder to create or update resources in Aos, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Aos environment. ## Recommended policy (PolicyLayer) Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Aos: ```json { "version": "1", "default": "deny", "tools": { "create_cylinder": { "limits": [ { "counter": "create_cylinder_rate", "window": "minute", "max": 30, "scope": "grant" } ] } } } ``` ## Other tools on Aos (718) - `archive_project` — Destructive — https://policylayer.com/tools/hybridlabor-api-aos/archive-project.md - `clear_clip_flags` — Destructive — https://policylayer.com/tools/hybridlabor-api-aos/clear-clip-flags.md - `clear_layer` — Destructive — https://policylayer.com/tools/hybridlabor-api-aos/clear-layer.md - `close_window` — Destructive — https://policylayer.com/tools/hybridlabor-api-aos/close-window.md - `delete_clip_markers` — Destructive — https://policylayer.com/tools/hybridlabor-api-aos/delete-clip-markers.md - `delete_color_group` — Destructive — https://policylayer.com/tools/hybridlabor-api-aos/delete-color-group.md - `delete_color_version` — Destructive — https://policylayer.com/tools/hybridlabor-api-aos/delete-color-version.md - `delete_face` — Destructive — https://policylayer.com/tools/hybridlabor-api-aos/delete-face.md - `delete_fusion_comp_on_clip` — Destructive — https://policylayer.com/tools/hybridlabor-api-aos/delete-fusion-comp-on-clip.md - `delete_layer` — Destructive — https://policylayer.com/tools/hybridlabor-api-aos/delete-layer.md - `delete_markers` — Destructive — https://policylayer.com/tools/hybridlabor-api-aos/delete-markers.md - `delete_media_pool_clips` — Destructive — https://policylayer.com/tools/hybridlabor-api-aos/delete-media-pool-clips.md - `delete_objects` — Destructive — https://policylayer.com/tools/hybridlabor-api-aos/delete-objects.md - `delete_project` — Destructive — https://policylayer.com/tools/hybridlabor-api-aos/delete-project.md - `delete_render_job` — Destructive — https://policylayer.com/tools/hybridlabor-api-aos/delete-render-job.md - `delete_stills` — Destructive — https://policylayer.com/tools/hybridlabor-api-aos/delete-stills.md - `delete_take` — Destructive — https://policylayer.com/tools/hybridlabor-api-aos/delete-take.md - `delete_td_node` — Destructive — https://policylayer.com/tools/hybridlabor-api-aos/delete-td-node.md - `delete_timeline_clips` — Destructive — https://policylayer.com/tools/hybridlabor-api-aos/delete-timeline-clips.md - `delete_track` — Destructive — https://policylayer.com/tools/hybridlabor-api-aos/delete-track.md - `manage_checkpoint` — Destructive — https://policylayer.com/tools/hybridlabor-api-aos/manage-checkpoint.md - `remoteos_manage_instance` — Destructive — https://policylayer.com/tools/hybridlabor-api-aos/remoteos-manage-instance.md - `remove_background_clip` — Destructive — https://policylayer.com/tools/hybridlabor-api-aos/remove-background-clip.md - `repair_network` — Destructive — https://policylayer.com/tools/hybridlabor-api-aos/repair-network.md - `reset_all_grades` — Destructive — https://policylayer.com/tools/hybridlabor-api-aos/reset-all-grades.md - `unlink_media_pool_clips` — Destructive — https://policylayer.com/tools/hybridlabor-api-aos/unlink-media-pool-clips.md - `add_render_job` — Execute — https://policylayer.com/tools/hybridlabor-api-aos/add-render-job.md - `ae_render_active_comp` — Execute — https://policylayer.com/tools/hybridlabor-api-aos/ae-render-active-comp.md - `apply_glsl_top_mapping` — Execute — https://policylayer.com/tools/hybridlabor-api-aos/apply-glsl-top-mapping.md - `apply_transform` — Execute — https://policylayer.com/tools/hybridlabor-api-aos/apply-transform.md - …and 688 more: https://policylayer.com/tools/hybridlabor-api-aos.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=hybridlabor-api-aos · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/hybridlabor-api-aos