AI agents use create_topic to create or update resources in GetNote MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your GetNote MCP Server environment.
This tool creates new knowledge bases, which is a Write operation (reversible creation of data). While it creates resources, these can be deleted or modified later (as evidenced by sibling tool 'delete_topic' on the server). Severity is medium because unlimited creation without safeguards could fill storage or exhaust quotas, but the daily limit mitigates risk.
From the tool's definition Tool name 'create_topic' and description '创建新的知识库' (create new knowledge base) indicate data creation. The warning about daily rate limits (max 50 per day) confirms it creates reversible resources.
Documented attack patterns abuse exactly the kind of access create_topic gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and GetNote MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for create_topic:
{
"version": "1",
"default": "deny",
"tools": {
"create_topic": {
"limits": [
{
"counter": "create_topic_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}create_topic 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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创建新的知识库。⚠️ 限制：每天最多创建 50 个知识库，北京时间自然日 00:00 重置。. It is categorised as a Write tool in the GetNote MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the GetNote MCP Server MCP server in PolicyLayer and add a rule for create_topic: 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 GetNote MCP Server. Nothing to install.
create_topic 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 create_topic 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 create_topic. 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.
create_topic is provided by the GetNote MCP Server MCP server (iswalle/getnote-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from GetNote MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
26 GetNote MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.