Delete all data from a market table and clear its sync metadata. Use when market data is corrupted and needs to be re-imported. After purging, re-import with the market import tools and re-run enrich_market_data as needed. Valid tables: daily, date_context, intraday
AI agents call purge_market_table to permanently remove resources in Tradeblocks — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
An AI agent that decides to call purge_market_table doesn't hesitate, doesn't double-check, and doesn't stop at one. Whatever it removes from Tradeblocks is gone — there is no undo for destructive operations.
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
Delete all data from a market table and clear its sync metadata. Use when market data is corrupted and needs to be re-imported. After purging, re-import with the market import tools and re-run enrich_market_data as needed. Valid tables: daily, date_context, intraday. It is categorised as a Destructive tool in the Tradeblocks MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Tradeblocks MCP server in PolicyLayer and add a rule for purge_market_table: 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 Tradeblocks. Nothing to install.
purge_market_table is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the purge_market_table 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 purge_market_table. 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.
purge_market_table is provided by the Tradeblocks MCP server (tradeblocks-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.