list_eventsource_messages
Lists captured Server-Sent Events, filterable by URL/content.
This record as markdown: /tools/1600822305-js-reverse-mcp/list-eventsource-messages.md
What list_eventsource_messages does on Js Reverse
AI agents call list_eventsource_messages 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 list_eventsource_messages is rated Low
This tool retrieves and filters already-captured Server-Sent Events messages. It performs a read operation on debugging/monitoring data without modifying state, executing code, or causing side effects. The ability to filter is a standard read operation refinement. Severity is low because misuse would expose data already captured during debugging sessions, with no destructive or execute-level impact.
From the tool's definition Tool name 'list_eventsource_messages' and description 'Lists captured Server-Sent Events, filterable by URL/content' indicate data retrieval with no modification or execution. The verb 'lists' and 'captured' denote querying historical event data.
Attacks that exploit this kind of access
The rule that runs list_eventsource_messages 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 list_eventsource_messages, this is the rule to start with:
list_eventsource_messages 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 list_eventsource_messages call is checked against it from then on.
Questions about list_eventsource_messages
Lists captured Server-Sent Events, filterable by URL/content. 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 list_eventsource_messages: 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.
list_eventsource_messages 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 list_eventsource_messages 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 list_eventsource_messages. 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.
list_eventsource_messages 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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