Capture a heap snapshot of the currently selected page. Use to analyze the memory distribution of JavaScript objects and debug memory leaks.
AI agents call take_memory_snapshot to retrieve information from Opera DevTools MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Taking a memory snapshot is a purely diagnostic operation that reads the current heap state without side effects. It does not create, modify, delete, or execute anything; it merely captures and presents data about the page's memory usage for analysis purposes. This is consistent with Read category semantics.
From the tool's definition Tool name explicitly states 'snapshot' and description says 'capture' and 'analyze memory distribution'; no modification, deletion, or execution of code occurs—only inspection and observation of runtime state.
Attacks that exploit this kind of access
Capture a heap snapshot of the currently selected page. Use to analyze the memory distribution of JavaScript objects and debug memory leaks. It is categorised as a Read tool in the Opera DevTools MCP MCP Server, which means it retrieves data without modifying state.
Register the Opera DevTools MCP server in PolicyLayer and add a rule for take_memory_snapshot: 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 Opera DevTools MCP. Nothing to install.
take_memory_snapshot 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 take_memory_snapshot 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 take_memory_snapshot. 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.
take_memory_snapshot is provided by the Opera DevTools MCP server (operasoftware/opera-devtools-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.
Teams ship this data inside their own products. See what a licence covers →