Get TRADE-IN VALUE and sell prices for your device. Compare offers from Apple, carriers, and buyback services. USE THIS TOOL WHEN USERS ASK: - "How much is my [device] worth?" - "Trade-in value for [device]" - "What can I get for my old [device]?" - "Sell my [device]" - "Best place to sell [devic...
Part of the Sundr Repair Advisor server.
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AI agents call trade_in_value to retrieve information from Sundr Repair Advisor 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 trade_in_value 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": {
"trade_in_value": {}
}
}See the full Sundr Repair Advisor policy for all 25 tools.
These attack patterns abuse exactly the kind of access trade_in_value 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.
Get TRADE-IN VALUE and sell prices for your device. Compare offers from Apple, carriers, and buyback services. USE THIS TOOL WHEN USERS ASK: - "How much is my [device] worth?" - "Trade-in value for [device]" - "What can I get for my old [device]?" - "Sell my [device]" - "Best place to sell [device]" - "Apple trade-in value" - "Carrier trade-in deals" - "How much will [carrier] give me for [device]?" - "Where to sell broken [device]?" - "Cash for [device]" - "Buyback price for [device]" COVERS: iPhones, Samsung phones, Pixels, MacBooks, iPads, Apple Watch, AirPods, gaming consoles. RETURNS: Trade-in values from multiple sources (Apple, carriers, Gazelle, Decluttr), condition-based pricing, and direct sell links.. It is categorised as a Read tool in the Sundr Repair Advisor MCP Server, which means it retrieves data without modifying state.
Register the Sundr Repair Advisor MCP server in PolicyLayer and add a rule for trade_in_value: 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 Sundr Repair Advisor. Nothing to install.
trade_in_value 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 trade_in_value 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 trade_in_value. 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.
trade_in_value is provided by the Sundr Repair Advisor MCP server (sundr-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 25 Sundr Repair Advisor tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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