Validate LiveJournal credentials and return account basics.
AI agents call check_login to retrieve information from LiveJournal MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs authentication validation and reads account metadata. It does not create, modify, delete, or execute arbitrary operations. The action is read-only—it queries and returns account information. Severity is low because while credential validation could be part of reconnaissance, the tool itself only validates and retrieves, posing minimal direct harm if misused by an agent.
From the tool's definition Tool name 'check_login' and description 'Validate LiveJournal credentials and return account basics' indicates credential validation and retrieval of account information without modification.
Attacks that exploit this kind of access
Validate LiveJournal credentials and return account basics. It is categorised as a Read tool in the LiveJournal MCP Server MCP Server, which means it retrieves data without modifying state.
Register the LiveJournal MCP Server MCP server in PolicyLayer and add a rule for check_login: 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 LiveJournal MCP Server. Nothing to install.
check_login 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 check_login 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 check_login. 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.
check_login is provided by the LiveJournal MCP Server MCP server (pavelber/livejournal-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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