Add a clip to an existing collection.
AI agents use opus_add_clip_to_collection to create or update resources in Apple Shortcuts — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Apple Shortcuts environment.
This tool performs a reversible modification operation—adding a clip to a collection. It does not execute arbitrary code, delete data irreversibly, or move money. While it modifies state, the change is easily reversible (the clip can be removed). The blast radius is low since the worst outcome of misuse would be unwanted clip associations in collections, which can be undone.
From the tool's definition The tool description states 'Add a clip to an existing collection.' The verb 'add' and the action of organizing/modifying a collection structure indicates a write operation that creates an association or reference to a clip within a collection.
Documented attack patterns abuse exactly the kind of access opus_add_clip_to_collection gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Apple Shortcuts, and nothing reaches the server without passing your rules. This is the rule we recommend for opus_add_clip_to_collection:
{
"version": "1",
"default": "deny",
"tools": {
"opus_add_clip_to_collection": {
"limits": [
{
"counter": "opus_add_clip_to_collection_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}opus_add_clip_to_collection 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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Add a clip to an existing collection. It is categorised as a Write tool in the Apple Shortcuts MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Apple Shortcuts MCP server in PolicyLayer and add a rule for opus_add_clip_to_collection: 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 Apple Shortcuts. Nothing to install.
opus_add_clip_to_collection 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 opus_add_clip_to_collection 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 opus_add_clip_to_collection. 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.
opus_add_clip_to_collection is provided by the Apple Shortcuts MCP server (@mindstone/mcp-server-apple-shortcuts). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Apple Shortcuts, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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423 Apple Shortcuts tools catalogued and risk-classified — across an index of 43,000+ MCP servers.