dart_load_snapshot
Load and parse a Dart AOT snapshot from libapp.so, extracting metadata and statistics (Code objects, ObjectPool entries, clusters). Pass a sessionId from dart_create_session to reuse an already-parsed snapshot (skips re-parsing libapp.so).
This record as markdown: /tools/io-github-vmoranv-jshookmcp/dart-load-snapshot.md
What dart_load_snapshot does on Jshookmcp
AI agents call dart_load_snapshot 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.
Why dart_load_snapshot is rated Low
Reads and analyzes compiled Dart code artifacts; no modifications or external executions, but exposes internal app structure.
From the tool's definition Load and parse Dart AOT snapshot, extracting metadata and statistics.
Attacks that exploit this kind of access
The rule that runs dart_load_snapshot 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_load_snapshot, this is the rule to start with:
dart_load_snapshot is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Jshookmcp, apply this rule, and every dart_load_snapshot call is checked against it from then on.
Questions about dart_load_snapshot
Load and parse a Dart AOT snapshot from libapp.so, extracting metadata and statistics (Code objects, ObjectPool entries, clusters). Pass a sessionId from dart_create_session to reuse an already-parsed snapshot (skips re-parsing libapp.so). It is categorised as a Read tool in the Jshookmcp MCP Server, which means it retrieves data without modifying state.
Register the Jshook MCP server in PolicyLayer and add a rule for dart_load_snapshot: 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.
dart_load_snapshot 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 dart_load_snapshot 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.
Set action: deny in the PolicyLayer policy for dart_load_snapshot. 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.
dart_load_snapshot 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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