Create a named database from a confirmed schema. Fails if the database already exists. After creating, consider using update_database_notes to record conventions and usage guidelines for future sessions.
AI agents use create_database to create or update resources in Instant Db — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Instant Db environment.
This tool creates new SQLite databases, which is a reversible write operation (the database can be deleted later via delete_database). It does not execute arbitrary queries, delete data, or move money.
From the tool's definition Tool description states 'Create a named database from a confirmed schema' — this is a create operation that adds new persistent data structures to the system.
Attacks that exploit this kind of access
Create a named database from a confirmed schema. Fails if the database already exists. After creating, consider using update_database_notes to record conventions and usage guidelines for future sessions. It is categorised as a Write tool in the Instant Db MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Instant Db 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 Instant Db. 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 Instant Db MCP server (urbushey/mcp-db). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
Teams ship this data inside their own products. See what a licence covers →