Calculate estimated construction cost based on real market data from the catalog. Uses average price per m² by material and region from actual company prices and projects. Args: area: House area in square meters (required, e.g. 120) material: Building material (каркас/frame, брус/timber, газобето...
Part of the MCP Market Russia server.
Free to start. No card required.
AI agents call calculate_cost to retrieve information from MCP Market Russia 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 calculate_cost 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": {
"calculate_cost": {}
}
}See the full MCP Market Russia policy for all 21 tools.
These attack patterns abuse exactly the kind of access calculate_cost 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.
Calculate estimated construction cost based on real market data from the catalog. Uses average price per m² by material and region from actual company prices and projects. Args: area: House area in square meters (required, e.g. 120) material: Building material (каркас/frame, брус/timber, газобетон/aerated_concrete, кирпич/brick, СИП/SIP). Empty = average across all. region: Region or city name for regional pricing. Empty = nationwide average. floors: Number of floors (1 or 2). 0 = no adjustment.. It is categorised as a Read tool in the MCP Market Russia MCP Server, which means it retrieves data without modifying state.
Register the MCP Market Russia MCP server in PolicyLayer and add a rule for calculate_cost: 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 MCP Market Russia. Nothing to install.
calculate_cost 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 calculate_cost 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 calculate_cost. 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.
calculate_cost is provided by the MCP Market Russia MCP server (devids77/mcp-market-russia). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 21 MCP Market Russia tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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