Get the length of the project (end of last item).
AI agents call get_project_length to retrieve information from Reaper without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves project metadata (project length/duration) without creating, modifying, deleting, or executing any operations. It is a pure read operation with no side effects. The low severity reflects that obtaining project duration information poses minimal risk even if misused by an agent.
From the tool's definition Tool description states 'Get the length of the project' - uses 'Get' verb and performs a retrieval operation with no modification of project state or data.
Documented attack patterns abuse exactly the kind of access get_project_length gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Reaper, and nothing reaches the server without passing your rules. This is the rule we recommend for get_project_length:
{
"version": "1",
"default": "deny",
"tools": {
"get_project_length": {}
}
}get_project_length is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get the length of the project (end of last item). It is categorised as a Read tool in the Reaper MCP Server, which means it retrieves data without modifying state.
Register the Reaper MCP server in PolicyLayer and add a rule for get_project_length: 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 Reaper. Nothing to install.
get_project_length is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_project_length 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 get_project_length. 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.
get_project_length is provided by the Reaper MCP server (twelvetake-studios/reaper-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Reaper, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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158 Reaper tools catalogued and risk-classified — across an index of 43,000+ MCP servers.