grpc_get_calls

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/grpc-get-calls.md

WHAT IT DOES

What grpc_get_calls does on Jshookmcp

AI agents call grpc_get_calls 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 grpc_get_calls is rated Low

Retrieves and inspects intercepted gRPC traffic; enables reconnaissance of API messages and data flows.

From the tool's definition Get captured gRPC calls with parsed message summaries and payloads.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs grpc_get_calls 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 grpc_get_calls, this is the rule to start with:

grpc_get_calls Allowed

grpc_get_calls 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": {
    "grpc_get_calls": {}
  }
}

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 grpc_get_calls call is checked against it from then on.

FAQ

Questions about grpc_get_calls

What does the grpc_get_calls tool do? +

Get captured gRPC / gRPC-Web calls with parsed message summaries. Set fullMessages=true to include the parsed message arrays (each carries payloadBase64 — feed to protobuf_decode_raw). Without fullMessages only per-call counts and flags are returned. 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 grpc_get_calls? +

Register the Jshook MCP server in PolicyLayer and add a rule for grpc_get_calls: 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 grpc_get_calls? +

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

Can I rate-limit grpc_get_calls? +

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

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

grpc_get_calls 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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