hooks_session-start

Initialize a new session and auto-start daemon Use when native Bash hooks (via Claude Code\

SERVERRuflo SOURCEruvnet/ruflo

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/ruflo/hooks-session-start.md

WHAT IT DOES

What hooks_session-start does on Ruflo

AI agents invoke hooks_session-start to trigger actions in Ruflo. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

RISK

Why hooks_session-start is rated High

This tool executes system-level operations (session initialization and daemon startup via Bash hooks). While not destructive by itself, it has significant blast radius if an AI agent misuses it—daemons could consume resources, interfere with system stability, or execute unintended background processes.

From the tool's definition Tool name 'hooks_session-start' combined with description referencing 'Initialize a new session and auto-start daemon' and 'native Bash hooks' indicates execution of shell/bash commands.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs hooks_session-start safely

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

hooks_session-start Rate-limited

hooks_session-start stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "hooks_session-start": {
      "limits": [
        {
          "counter": "hooks_session-start_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about hooks_session-start

What does the hooks_session-start tool do? +

Initialize a new session and auto-start daemon Use when native Bash hooks (via Claude Code\. It is categorised as a Execute tool in the Ruflo MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on hooks_session-start? +

Register the Ruflo MCP server in PolicyLayer and add a rule for hooks_session-start: 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 Ruflo. Nothing to install.

What risk level is hooks_session-start? +

hooks_session-start is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit hooks_session-start? +

Yes. Add a rate_limit block to the hooks_session-start 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 hooks_session-start completely? +

Set action: deny in the PolicyLayer policy for hooks_session-start. 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 hooks_session-start? +

hooks_session-start is provided by the Ruflo MCP server (ruvnet/ruflo). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Ruflo, and thousands of servers like it.

This server

All 496 Ruflo tools → High-risk tools on this server →

Across the catalogue

start_devtools_monitoring on Percepta MCP Server →team_manager_start_room on Team Manager MCP →start_etw_trace on Procmon → All high-risk MCP tools → The MCP Attack Database →

Guides

Govern code and CI agents →Agent sandbox →Least privilege for MCP →