Reserve a range of IDs for future use
AI agents use reserve-range to create or update resources in AL Object ID Ninja MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your AL Object ID Ninja MCP Server environment.
This tool creates a reservation entry for a range of IDs, which is a reversible write operation. It modifies the allocation state by claiming IDs for future use, preventing others from using them, but does not execute code or irreversibly destroy data. Misuse could block ID ranges for a team, causing moderate disruption.
From the tool's definition Reserve a range of IDs for future use
Documented attack patterns abuse exactly the kind of access reserve-range gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and AL Object ID Ninja MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for reserve-range:
{
"version": "1",
"default": "deny",
"tools": {
"reserve-range": {
"limits": [
{
"counter": "reserve-range_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}reserve-range 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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Reserve a range of IDs for future use. It is categorised as a Write tool in the AL Object ID Ninja MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the AL Object ID Ninja MCP Server MCP server in PolicyLayer and add a rule for reserve-range: 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 AL Object ID Ninja MCP Server. Nothing to install.
reserve-range 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 reserve-range 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 reserve-range. 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.
reserve-range is provided by the AL Object ID Ninja MCP Server MCP server (sshadows/al-objid-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from AL Object ID Ninja 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.
26 AL Object ID Ninja MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.