Switch to user JWT authentication mode (requires previous user login)
AI agents invoke passgage_switch_to_user_mode to trigger actions in Passgage MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.
This tool changes the authentication context/mode of the session, switching to a different JWT token. It triggers an operational state change in how the system authenticates subsequent requests. This is not a simple read, nor does it create/modify data records — it executes an authentication mode switch that affects all downstream API calls.
From the tool's definition Switch to user JWT authentication mode (requires previous user login)
Attacks that exploit this kind of access
Switch to user JWT authentication mode (requires previous user login). It is categorised as a Execute tool in the Passgage MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Passgage MCP Server MCP server in PolicyLayer and add a rule for passgage_switch_to_user_mode: 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 Passgage MCP Server. Nothing to install.
passgage_switch_to_user_mode is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the passgage_switch_to_user_mode 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 passgage_switch_to_user_mode. 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.
passgage_switch_to_user_mode is provided by the Passgage MCP Server MCP server (passgage/mcp-server). 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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