Create a new database with custom schema in a parent page
AI agents use create_database to create or update resources in Notion API MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Notion API MCP Server environment.
This tool creates a new database, which is a write operation that modifies the Notion workspace by adding a new persistent data structure. It is reversible (databases can be deleted), so it does not qualify as Destructive.
From the tool's definition Tool name 'create_database' and description 'Create a new database with custom schema in a parent page' indicate creation of a new data structure. This is a reversible write operation — the database can be deleted or modified after creation.
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 API 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 with custom schema in a parent page. It is categorised as a Write tool in the Notion API MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Notion API 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 API 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 API MCP Server MCP server (pbohannon/notion-api-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Notion API 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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17 Notion API MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.