AI agents use add-table to create or update resources in Xano MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Xano MCP Server environment.
This tool creates new database tables, which is a reversible Write operation. While it modifies the database schema, the action can be undone by deleting the table. It is not Destructive (no irreversible deletion), not Execute (no code/command execution), and not Financial. Severity is medium because creating unwanted tables could consume resources and require cleanup, but the impact is containable and reversible.
From the tool's definition Tool name 'add-table' and description 'Add a new table to the Xano database' indicate creation of a new data structure within the database.
Documented attack patterns abuse exactly the kind of access add-table gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Xano MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for add-table:
{
"version": "1",
"default": "deny",
"tools": {
"add-table": {
"limits": [
{
"counter": "add-table_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}add-table 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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Add a new table to the Xano database. It is categorised as a Write tool in the Xano MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Xano MCP Server MCP server in PolicyLayer and add a rule for add-table: 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 Xano MCP Server. Nothing to install.
add-table 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-table 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-table. 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-table is provided by the Xano MCP Server MCP server (lowcodelocky2/xano-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Xano 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.
10 Xano MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.