This endpoint allows you to create various types of rules in Requestly, such as Redirect, Cancel, Replace, Headers, User-Agent, Script (Insert Script), Query Param, Modify Request, Modify Response, and Delay. Each rule has a specific structure and parameters based on the ruleType.
AI agents use create_rule to create or update resources in Requestly MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Requestly MCP Server environment.
This tool creates new data objects (Requestly rules) without permanently destroying anything. It falls squarely into the Write category because rules are reversible (can be modified or deleted).
From the tool's definition The tool creates new rules in Requestly. The description states 'allows you to create various types of rules' and the name explicitly uses 'create_'.
Attacks that exploit this kind of access
This endpoint allows you to create various types of rules in Requestly, such as Redirect, Cancel, Replace, Headers, User-Agent, Script (Insert Script), Query Param, Modify Request, Modify Response, and Delay. Each rule has a specific structure and parameters based on the ruleType. It is categorised as a Write tool in the Requestly MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Requestly MCP Server MCP server in PolicyLayer and add a rule for create_rule: 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 Requestly MCP Server. Nothing to install.
create_rule 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_rule 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_rule. 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_rule is provided by the Requestly MCP Server MCP server (requestly/mcp). 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.
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