Get the next date when lineups can be edited (roster deadline)
AI agents call get_edit_date to retrieve information from Yahoo Fantasy MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves scheduling information about when lineup edits become available. It is a passive query with no side effects—it does not create, modify, delete, or execute any operations. It simply reads and returns a deadline date, consistent with the Read category for data retrieval operations.
From the tool's definition Tool name 'get_edit_date' and description 'Get the next date when lineups can be edited' indicate a retrieval operation. The server is explicitly described as 'read-only access' and this tool queries metadata about roster deadlines without modifying any data.
Attacks that exploit this kind of access
Get the next date when lineups can be edited (roster deadline). It is categorised as a Read tool in the Yahoo Fantasy MCP MCP Server, which means it retrieves data without modifying state.
Register the Yahoo Fantasy MCP server in PolicyLayer and add a rule for get_edit_date: 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 Yahoo Fantasy MCP. Nothing to install.
get_edit_date 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_edit_date 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_edit_date. 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_edit_date is provided by the Yahoo Fantasy MCP server (spilchen/yahoo_fantasy_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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