AI agents use generate_motions to create or update resources in Live2D Automation MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Live2D Automation MCP Server environment.
This tool creates or generates animation motion data as part of the Live2D model generation pipeline. While the description is empty, the server's stated purpose and sibling tools ('export_model', 'build_cubism_psd', 'create_mesh') establish that generate_motions produces new animation artifacts.
From the tool's definition Tool name 'generate_motions' combined with server description stating it 'provides a full pipeline for creating layered art meshes and motion files' indicates the tool creates motion files.
Documented attack patterns abuse exactly the kind of access generate_motions gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Live2D Automation MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for generate_motions:
{
"version": "1",
"default": "deny",
"tools": {
"generate_motions": {
"limits": [
{
"counter": "generate_motions_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}generate_motions 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.
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generate_motions. It is categorised as a Write tool in the Live2D Automation MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Live2D Automation MCP Server MCP server in PolicyLayer and add a rule for generate_motions: 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 Live2D Automation MCP Server. Nothing to install.
generate_motions 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 generate_motions 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 generate_motions. 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.
generate_motions is provided by the Live2D Automation MCP Server MCP server (j621111/live2d-automation). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Live2D Automation MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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17 Live2D Automation MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.