Get postcard pricing tiers based on lifetime top-up amount.
AI agents call get_pricing to retrieve information from Postcardbot without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a read-only operation that queries pricing data. It has no side effects, does not execute code or external operations, does not modify any data, and does not involve financial transactions. The tool merely returns informational pricing tier data based on account history. Blast radius is minimal—misuse would only result in viewing pricing information.
From the tool's definition Tool name 'get_pricing' and description 'Get postcard pricing tiers based on lifetime top-up amount' indicate this retrieves pricing information without modifying, executing, or deleting anything.
Attacks that exploit this kind of access
Get postcard pricing tiers based on lifetime top-up amount. It is categorised as a Read tool in the Postcardbot MCP Server, which means it retrieves data without modifying state.
Register the Postcardbot MCP server in PolicyLayer and add a rule for get_pricing: 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 Postcardbot. Nothing to install.
get_pricing 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_pricing 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_pricing. 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_pricing is provided by the Postcardbot MCP server (postcardbot/mcp-server). 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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