quality_metrics

THE RISK

Low Risk

Why quality_metrics needs a policy

This tool retrieves and queries code quality metrics from a DeepSource project. The verb 'Get' combined with the filtering capability indicates a read-only data retrieval operation. There are no side effects, modifications to data, code execution, or destructive actions. The primary purpose is to provide insights into existing quality metrics, making this a straightforward Read category tool with low security risk.

From the tool's definition Tool description states 'Get quality metrics' - a retrieval operation with 'optional filtering' indicating querying/viewing data without modification.

Documented attack patterns abuse exactly the kind of access quality_metrics gives an agent:

POLICY

How to control quality_metrics

PolicyLayer is an MCP gateway — it sits between your AI agents and DeepSource MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for quality_metrics:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "quality_metrics": {}
  }
}

quality_metrics is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register DeepSource MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More DeepSource MCP Server tools

Write update_metric_setting Update the settings for a quality metric Write update_metric_threshold Update the threshold for a specific quality metric Read recent_run_issues Get issues from the most recent analysis run on a specific branch Read run Get a specific analysis run by its runUid or commitOid Read compliance_report Get security compliance reports from a DeepSource project Read dependency_vulnerabilities Get dependency vulnerabilities from a DeepSource project Other example_tool An example tool demonstrating the enhanced plugin format Read project_issues Get issues from a DeepSource project with filtering capabilities

All 11 DeepSource MCP Server tools →

Read tools on other servers

M-Team MCP Server get_torrent_detail YouTube MCP Server search_channel Android Forensics ADB MCP Server parse_browser_history 0xarchive web3_challenge

Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about quality_metrics

What does the quality_metrics tool do? +

Get quality metrics from a DeepSource project with optional filtering. It is categorised as a Read tool in the DeepSource MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on quality_metrics? +

Register the DeepSource MCP Server MCP server in PolicyLayer and add a rule for quality_metrics: 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 DeepSource MCP Server. Nothing to install.

What risk level is quality_metrics? +

quality_metrics is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit quality_metrics? +

Yes. Add a rate_limit block to the quality_metrics 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.

How do I block quality_metrics completely? +

Set action: deny in the PolicyLayer policy for quality_metrics. 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.

What MCP server provides quality_metrics? +

quality_metrics is provided by the DeepSource MCP Server MCP server (sapientpants/deepsource-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every DeepSource MCP Server tool call.

Start from DeepSource MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →