codexray_callees

THE RISK

Low Risk

Why codexray_callees needs a policy

This tool retrieves and queries static information from a pre-built semantic knowledge graph about code structure (which functions call which). It performs data retrieval only—no creation, modification, execution, or deletion of code or data. The output is read-only analysis intended for understanding code relationships. This fits the 'Read' category as a query/fetch operation.

From the tool's definition Tool name is 'codexray_callees' and description states 'Find all functions/methods that the specified symbol CALLS.

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

POLICY

How to control codexray_callees

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

policy.json

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

codexray_callees 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 CodeXRay — 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 CodeXRay tools

Read codexray_context Build comprehensive task-relevant context for a coding task. Analyzes your query, finds re Read codexray_callers Find all functions/methods that CALL the specified symbol. Essential for understanding usa Read codexray_circular Detect circular dependencies in the codebase. Finds import/call cycles that can cause issu Read codexray_complexity Find the most complex functions/methods in the codebase by cyclomatic complexity score. Hi Read codexray_deadcode Find potentially unused/dead code — symbols that are never called or referenced by other s Read codexray_deps Get the full dependency tree of a symbol — everything it imports, extends, implements, or Read codexray_files Get the indexed file tree with symbol counts per file. Use to understand project structure Read codexray_hotspots Find the most connected/critical symbols in the codebase — those with the highest number o

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Read tools on other servers

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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 codexray_callees

What does the codexray_callees tool do? +

Find all functions/methods that the specified symbol CALLS. Use to understand what a function depends on. It is categorised as a Read tool in the CodeXRay MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on codexray_callees? +

Register the CodeXRay MCP server in PolicyLayer and add a rule for codexray_callees: 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 CodeXRay. Nothing to install.

What risk level is codexray_callees? +

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

Can I rate-limit codexray_callees? +

Yes. Add a rate_limit block to the codexray_callees 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 codexray_callees completely? +

Set action: deny in the PolicyLayer policy for codexray_callees. 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 codexray_callees? +

codexray_callees is provided by the CodeXRay MCP server (neuralrays/codexray). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every CodeXRay tool call.

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

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