Create a new model with structured parameters. Allows customization of model behavior, system prompts, and templates.
AI agents use ollama_create 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.
Creating a new model is a reversible write operation—it adds data to the system but does not execute arbitrary code, delete data, or commit financial transactions. The blast radius is medium: a misconfigured model created by an agent could affect subsequent interactions, but the creation itself is not destructive or executable.
From the tool's definition Tool name is 'ollama_create' and description states 'Create a new model with structured parameters.' The action is creating/adding new data (a model) to the system.
Documented attack patterns abuse exactly the kind of access ollama_create 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_create:
{
"version": "1",
"default": "deny",
"tools": {
"ollama_create": {
"limits": [
{
"counter": "ollama_create_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}ollama_create 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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Create a new model with structured parameters. Allows customization of model behavior, system prompts, and templates. 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_create: 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_create 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_create 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_create. 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_create 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.