list_bundles

SERVERTrace SOURCEnikolai-vysotskyi/trace-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/nikolai-vysotskyi-trace-mcp/list-bundles.md

WHAT IT DOES

What list_bundles does on Trace

AI agents call list_bundles to retrieve information from Trace without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why list_bundles is rated Low

This is a pure read operation that queries and returns information about installed dependency library bundles. There is no data modification, code execution, deletion, or external side effects. The blast radius if misused by an agent is minimal—it only exposes static metadata about installed packages.

From the tool's definition Tool name 'list_bundles' and description explicitly states 'Read-only' and 'Returns JSON' listing metadata about pre-indexed bundles. Retrieves package information (name, version, counts, size) with no modification or side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list_bundles safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Trace, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For list_bundles, this is the rule to start with:

list_bundles Allowed

list_bundles is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

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

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Trace, apply this rule, and every list_bundles call is checked against it from then on.

FAQ

Questions about list_bundles

What does the list_bundles tool do? +

List installed pre-indexed bundles for dependency libraries. Shows package name, version, symbol/edge counts, and size. Read-only. Returns JSON: { bundles: [{ name, version, symbols, edges, size }], total }. It is categorised as a Read tool in the Trace MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_bundles? +

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

What risk level is list_bundles? +

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

Can I rate-limit list_bundles? +

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

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

list_bundles is provided by the Trace MCP server (nikolai-vysotskyi/trace-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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