proxy_add_rule
Add an interception rule: forward, mock_response, redirect, or block.
This record as markdown: /tools/io-github-vmoranv-jshookmcp/proxy-add-rule.md
What proxy_add_rule does on Jshookmcp
AI agents invoke proxy_add_rule to trigger actions in Jshookmcp. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.
Why proxy_add_rule is rated High
Modifying proxy rules intercepts and alters live network traffic with broad external effects.
From the tool's definition Add an interception rule: forward, mock_response, redirect, or block
Attacks that exploit this kind of access
The rule that runs proxy_add_rule safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Jshookmcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For proxy_add_rule, this is the rule to start with:
proxy_add_rule stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Jshookmcp, apply this rule, and every proxy_add_rule call is checked against it from then on.
Questions about proxy_add_rule
Add an interception rule: forward, mock_response, redirect, or block. It is categorised as a Execute tool in the Jshookmcp MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Jshook MCP server in PolicyLayer and add a rule for proxy_add_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 Jshookmcp. Nothing to install.
proxy_add_rule is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the proxy_add_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 proxy_add_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.
proxy_add_rule is provided by the Jshook MCP server (@jshookmcp/jshook). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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