Parse a source map and summarize original sources, embedded content coverage, and likely reverse targets.
AI agents call analyze_source_maps to retrieve information from JS Reverse MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
analyze_source_maps performs passive analysis of existing source map files to extract metadata about original sources and coverage. It retrieves and queries data to produce a summary report. No code execution, data modification, deletion, or financial transactions occur.
From the tool's definition Tool description states 'Parse a source map and summarize' — parse and summarize are read-only operations that retrieve and analyze information without modifying, executing, or deleting anything. Source maps are static debugging artifacts.
Attacks that exploit this kind of access
Parse a source map and summarize original sources, embedded content coverage, and likely reverse targets. It is categorised as a Read tool in the JS Reverse MCP MCP Server, which means it retrieves data without modifying state.
Register the JS Reverse MCP server in PolicyLayer and add a rule for analyze_source_maps: 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 MCP. Nothing to install.
analyze_source_maps 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 analyze_source_maps 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 analyze_source_maps. 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.
analyze_source_maps is provided by the JS Reverse MCP server (noone-hub/jsreverser-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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