anim_add_track
Add a track to an Animation and set its target path (undoable). Returns the new track index.
This record as markdown: /tools/breakpoint-mcp/anim-add-track.md
What anim_add_track does on Breakpoint
AI agents use anim_add_track to create or update resources in Breakpoint, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Breakpoint environment.
| Parameter | Type | Required | Description |
|---|---|---|---|
name | string | Yes | Animation name |
path | string | Yes | Track target: a node path, or "Node:property" for value tracks (e.g. "Sprite2D:position") |
type | string | — | Track type: value (default), position_3d, rotation_3d, scale_3d, blend_shape, method, bezier, audio, animation |
library | string | — | Animation library name (default "") |
player_path | string | Yes | AnimationPlayer node path |
Parameters from the server's own tool schema.
Why anim_add_track is rated Medium
This tool creates/modifies animation data by adding a track to an existing animation object. While it performs a structural modification, it is explicitly marked as undoable, meaning the effect can be reversed. This places it squarely in the Write category rather than Destructive.
From the tool's definition Tool description states 'Add a track to an Animation and set its target path (undoable)'. The verb 'Add' and capability to modify animation data (creating a new track) indicates write capability.
Risk signalsAccepts file system path (path)
Attacks that exploit this kind of access
The rule that runs anim_add_track safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Breakpoint, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For anim_add_track, this is the rule to start with:
anim_add_track stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Breakpoint, apply this rule, and every anim_add_track call is checked against it from then on.
Questions about anim_add_track
Add a track to an Animation and set its target path (undoable). Returns the new track index. It is categorised as a Write tool in the Breakpoint MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
anim_add_track accepts 5 parameters: name, path, type, library, player_path. Required: name, path, player_path. The full parameter table on this page comes from the server's own tool schema.
Register the Breakpoint MCP server in PolicyLayer and add a rule for anim_add_track: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Breakpoint. Nothing to install.
anim_add_track is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the anim_add_track rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for anim_add_track. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
anim_add_track is provided by the Breakpoint MCP server (breakpoint-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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