AI agents use create_index to create or update resources in Codehooks Io MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Codehooks Io MCP Server environment.
Creating an index modifies database metadata and is a Write operation—it creates new database structures that can be dropped or modified later. The impact is medium severity because while indexes can be removed, misconfigured indexes can degrade performance and affect system availability.
From the tool's definition Tool name 'create_index' and description 'Add field(s) to a query index' indicate creation/modification of database indexes, which is a reversible structural change.
Documented attack patterns abuse exactly the kind of access create_index gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Codehooks Io MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for create_index:
{
"version": "1",
"default": "deny",
"tools": {
"create_index": {
"limits": [
{
"counter": "create_index_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}create_index 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 field(s) to a query index. It is categorised as a Write tool in the Codehooks Io MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Codehooks Io MCP Server MCP server in PolicyLayer and add a rule for create_index: 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 Codehooks Io MCP Server. Nothing to install.
create_index 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_index 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_index. 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_index is provided by the Codehooks Io MCP Server MCP server (restdb/codehooks-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Codehooks Io 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.
20 Codehooks Io MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.