Get navigation transition timing data — how long each screen transition takes. Requires mcp-rn-devtools-sdk with navigationRef.
AI agents call get_navigation_timing to retrieve information from Mcp Rn Devtools without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool reads performance metrics about navigation transitions in a React Native app. It does not modify, execute, delete, or trigger external operations—it only queries and returns timing information. This is a Read category tool with low severity since the information exposed (navigation timing) is low-sensitivity debugging metadata with minimal blast radius if misused by an AI agent.
From the tool's definition Tool retrieves timing data for screen transitions ('Get navigation transition timing data — how long each screen transition takes'). It is a passive inspection/query operation with no side effects.
Attacks that exploit this kind of access
Get navigation transition timing data — how long each screen transition takes. Requires mcp-rn-devtools-sdk with navigationRef. It is categorised as a Read tool in the Mcp Rn Devtools MCP Server, which means it retrieves data without modifying state.
Register the Mcp Rn Devtools MCP server in PolicyLayer and add a rule for get_navigation_timing: 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 Mcp Rn Devtools. Nothing to install.
get_navigation_timing 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 get_navigation_timing 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 get_navigation_timing. 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.
get_navigation_timing is provided by the Mcp Rn Devtools MCP server (pablonortiz/mcp-rn-devtools). 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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