AI agents use add_note_tags 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.
Adding tags to notes is a reversible modification operation that does not delete data, execute code, or affect financial transactions. This is a standard Write operation. Severity is medium because tag manipulation could affect knowledge organization and retrieval, but the change is reversible via delete_note_tag (visible in sibling tools), limiting blast radius.
From the tool's definition Tool name 'add_note_tags' and description '为指定笔记添加标签' (Add tags to specified notes) indicate the tool creates or modifies metadata (tags) associated with existing notes.
Documented attack patterns abuse exactly the kind of access add_note_tags 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 add_note_tags:
{
"version": "1",
"default": "deny",
"tools": {
"add_note_tags": {
"limits": [
{
"counter": "add_note_tags_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}add_note_tags 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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为指定笔记添加标签。. 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 add_note_tags: 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.
add_note_tags 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 add_note_tags 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 add_note_tags. 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.
add_note_tags 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.
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26 GetNote MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.