Copy a model. Creates a duplicate of an existing model with a new name.
AI agents use ollama_copy to create or update resources in Ollama MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Ollama MCP Server environment.
This tool creates a new model copy, which is a reversible write operation. It does not execute arbitrary code or delete data, placing it in the Write category. Severity is medium because duplicating models could consume disk space and computational resources, and could be misused to create many copies, but the operation itself is reversible and doesn't inherently cause data loss or financial impact.
From the tool's definition Tool description states 'Creates a duplicate of an existing model with a new name.' This is a create/modify operation that adds new data (a model copy) to the system.
Documented attack patterns abuse exactly the kind of access ollama_copy gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Ollama MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for ollama_copy:
{
"version": "1",
"default": "deny",
"tools": {
"ollama_copy": {
"limits": [
{
"counter": "ollama_copy_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}ollama_copy 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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Copy a model. Creates a duplicate of an existing model with a new name. It is categorised as a Write tool in the Ollama MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Ollama MCP Server MCP server in PolicyLayer and add a rule for ollama_copy: 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 Ollama MCP Server. Nothing to install.
ollama_copy 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 ollama_copy 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 ollama_copy. 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.
ollama_copy is provided by the Ollama MCP Server MCP server (rawveg/ollama-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 13 Ollama MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
13 Ollama MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.