set_extra_headers
Sets extra HTTP headers sent with every subsequent request (CDP
This record as markdown: /tools/1600822305-js-reverse-mcp/set-extra-headers.md
What set_extra_headers does on Js Reverse
AI agents invoke set_extra_headers to trigger actions in Js Reverse. 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 set_extra_headers is rated High
This tool modifies the behavior of subsequent browser requests by injecting HTTP headers, which is an ongoing side-effect that affects all future network requests in the CDP session. It's not a simple data write but rather an execution-context modification that triggers effects on future operations.
From the tool's definition Sets extra HTTP headers sent with every subsequent request (CDP
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
The rule that runs set_extra_headers safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Js Reverse, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For set_extra_headers, this is the rule to start with:
set_extra_headers 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 Js Reverse, apply this rule, and every set_extra_headers call is checked against it from then on.
Questions about set_extra_headers
Sets extra HTTP headers sent with every subsequent request (CDP. It is categorised as a Execute tool in the Js Reverse MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Js Reverse MCP server in PolicyLayer and add a rule for set_extra_headers: 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 Js Reverse. Nothing to install.
set_extra_headers 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 set_extra_headers 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 set_extra_headers. 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.
set_extra_headers is provided by the Js Reverse MCP server (1600822305/js-reverse-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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