anim_set_length

Set an Animation's length in seconds (undoable).

SERVERBreakpoint SOURCEbreakpoint-mcp

Medium RISK CLASS

Category Write

Parameters 43 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/breakpoint-mcp/anim-set-length.md

WHAT IT DOES

What anim_set_length does on Breakpoint

AI agents use anim_set_length 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
`length`	number	Yes	New length in seconds (> 0)
`library`	string	—	Animation library name (default "")
`player_path`	string	Yes	AnimationPlayer node path

Parameters from the server's own tool schema.

RISK

Why anim_set_length is rated Medium

The tool performs a state modification (setting animation length) that is explicitly reversible/undoable. This is characteristic of Write operations — data is altered but not permanently destroyed. While the modification could affect dependent animations or playback, the reversibility and bounded scope of changing a single numeric property (length) keeps it in Write rather than Execute or Destructive.

From the tool's definition Tool description states 'Set an Animation's length in seconds (undoable)' — this modifies animation properties. The '(undoable)' annotation indicates the action is reversible, which aligns with Write rather than Destructive.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs anim_set_length 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_set_length, this is the rule to start with:

anim_set_length Rate-limited

anim_set_length 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "anim_set_length": {
      "limits": [
        {
          "counter": "anim_set_length_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Breakpoint, apply this rule, and every anim_set_length call is checked against it from then on.

FAQ

Questions about anim_set_length

What does the anim_set_length tool do? +

Set an Animation's length in seconds (undoable). 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.

What parameters does anim_set_length accept? +

anim_set_length accepts 4 parameters: name, length, library, player_path. Required: name, length, player_path. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on anim_set_length? +

Register the Breakpoint MCP server in PolicyLayer and add a rule for anim_set_length: 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.

What risk level is anim_set_length? +

anim_set_length is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit anim_set_length? +

Yes. Add a rate_limit block to the anim_set_length 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.

How do I block anim_set_length completely? +

Set action: deny in the PolicyLayer policy for anim_set_length. 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.

What MCP server provides anim_set_length? +

anim_set_length 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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