export_har
Exports captured network traffic as a HAR 1.2 file (optionally filtered
This record as markdown: /tools/1600822305-js-reverse-mcp/export-har.md
What export_har does on Js Reverse
AI agents call export_har to retrieve information from Js Reverse without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why export_har is rated Low
This tool reads/exports already-captured network traffic data into HAR format. It retrieves existing data without modifying anything. Severity is medium because HAR files can contain sensitive data like cookies, auth tokens, and request/response bodies captured from browser sessions.
From the tool's definition Exports captured network traffic as a HAR 1.2 file (optionally filtered)
Attacks that exploit this kind of access
The rule that runs export_har 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 export_har, this is the rule to start with:
export_har is read-only, so it stays allowed. 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 export_har call is checked against it from then on.
Questions about export_har
Exports captured network traffic as a HAR 1.2 file (optionally filtered. It is categorised as a Read tool in the Js Reverse MCP Server, which means it retrieves data without modifying state.
Register the Js Reverse MCP server in PolicyLayer and add a rule for export_har: 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.
export_har 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 export_har 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 export_har. 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.
export_har 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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