Analyzes a CircleCI usage data CSV file to find jobs/resource classes with average or max CPU/RAM usage below a given threshold (default 40%). This helps identify underused resource classes that may be oversized for their workload. Required parameter: - csvFilePath: Path to the ...
Single-target operation
Part of the CircleCI MCP Server MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents call find_underused_resource_classes to retrieve information from CircleCI MCP Server 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 find_underused_resource_classes 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.
tools:
find_underused_resource_classes:
rules:
- action: allowSee the full CircleCI MCP Server policy for all 16 tools.
Agents calling read-class tools like find_underused_resource_classes have been implicated in these attack patterns. Read the full case and prevention policy for each:
Other tools in the Read risk category across the catalogue. The same policy patterns (rate-limit, allow) apply to each.
Analyzes a CircleCI usage data CSV file to find jobs/resource classes with average or max CPU/RAM usage below a given threshold (default 40%). This helps identify underused resource classes that may be oversized for their workload. Required parameter: - csvFilePath: Path to the usage data CSV file (string). IMPORTANT: This must be an absolute path. If you are given a relative path, you must resolve it to an absolute path before calling this tool. Optional parameter: - threshold: Usage percentage threshold (number, default 40) The tool expects the CSV to have columns: job_name, resource_class, median_cpu_utilization_pct, max_cpu_utilization_pct, median_ram_utilization_pct, max_ram_utilization_pct (case-insensitive). These required columns are a subset of the columns in the CircleCI usage API output and the tool will work with the full set of columns from the usage API CSV. It returns a summary report listing all jobs/resource classes where any of these metrics is below the threshold. . It is categorised as a Read tool in the CircleCI MCP Server MCP Server, which means it retrieves data without modifying state.
Add a rule in your Intercept YAML policy under the tools section for find_underused_resource_classes. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the CircleCI MCP Server MCP server.
find_underused_resource_classes 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 find_underused_resource_classes rule in your Intercept 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 Intercept policy for find_underused_resource_classes. 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.
find_underused_resource_classes is provided by the CircleCI MCP Server MCP server (CircleCI-Public/mcp-server-circleci). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic policy on every MCP tool call. Per-identity grants. Full audit log.