AI agents use create_database to create or update resources in Notion MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Notion MCP Server environment.
Creating a database is a reversible write operation that adds new data structures to the user's Notion workspace. It does not execute arbitrary code, delete data irreversibly, or move money, making Write the appropriate category.
From the tool's definition Tool name is 'create_database' and description states 'Create a new database in a page'. This is a data creation operation that adds new structural elements to a Notion workspace.
Documented attack patterns abuse exactly the kind of access create_database gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Notion MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for create_database:
{
"version": "1",
"default": "deny",
"tools": {
"create_database": {
"limits": [
{
"counter": "create_database_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}create_database 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 database in a page. It is categorised as a Write tool in the Notion MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Notion MCP Server MCP server in PolicyLayer and add a rule for create_database: 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 Notion MCP Server. Nothing to install.
create_database 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_database 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_database. 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_database is provided by the Notion MCP Server MCP server (v-3/notion-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 13 Notion MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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13 Notion MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.