dart_call_graph

SERVERJshookmcp SOURCE@jshookmcp/jshook

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/io-github-vmoranv-jshookmcp/dart-call-graph.md

WHAT IT DOES

What dart_call_graph does on Jshookmcp

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

RISK

Why dart_call_graph is rated Low

Analyzes a snapshot to build a call graph; read-only static analysis with no side effects.

From the tool's definition Build a best-effort static call graph from a Dart AOT snapshot

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs dart_call_graph safely

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

dart_call_graph Allowed

dart_call_graph 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": {
    "dart_call_graph": {}
  }
}

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

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

FAQ

Questions about dart_call_graph

What does the dart_call_graph tool do? +

Build a best-effort static call graph from a Dart AOT snapshot: nodes are Code objects, edges are ObjectPool entries whose value matches another Code entry point (caller to callee). Pass a sessionId to reuse a cached snapshot. Honest boundary: indirect/dynamic calls without a pool entry, and PcDescriptors-level mapping, require instruction decoding (deferred — cross-Dart-SDK version work). It is categorised as a Read tool in the Jshookmcp MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on dart_call_graph? +

Register the Jshook MCP server in PolicyLayer and add a rule for dart_call_graph: 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 Jshookmcp. Nothing to install.

What risk level is dart_call_graph? +

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

Can I rate-limit dart_call_graph? +

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

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

dart_call_graph is provided by the Jshook MCP server (@jshookmcp/jshook). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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