Extends the expiry time of an active limit or trailing order. expiry_hours sets the NEW total lifetime (counted from order creation, not from now). WHEN TO USE: When you want to keep a pending order alive longer than the original expiry_hours allowed (max 336 = 14 days). WHAT IT DOES: Sends { act...
Part of the Trade Router server.
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AI agents call extend_order to retrieve information from Trade Router without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though extend_order only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"extend_order": {}
}
}See the full Trade Router policy for all 21 tools.
These attack patterns abuse exactly the kind of access extend_order gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Extends the expiry time of an active limit or trailing order. expiry_hours sets the NEW total lifetime (counted from order creation, not from now). WHEN TO USE: When you want to keep a pending order alive longer than the original expiry_hours allowed (max 336 = 14 days). WHAT IT DOES: Sends { action:. It is categorised as a Read tool in the Trade Router MCP Server, which means it retrieves data without modifying state.
Register the Trade Router MCP server in PolicyLayer and add a rule for extend_order: 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 Trade Router. Nothing to install.
extend_order 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 extend_order 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 extend_order. 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.
extend_order is provided by the Trade Router MCP server (@traderouter/trade-router-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 21 Trade Router tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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