browser_session_end

SERVERClaude Flow SOURCEclaude-flow

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/io-github-ruvnet-claude-flow/browser-session-end.md

WHAT IT DOES

What browser_session_end does on Claude Flow

AI agents invoke browser_session_end to trigger actions in Claude Flow. 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 browser_session_end is rated High

This tool terminates a browser automation session and triggers several side-effecting operations: finalizing a trajectory with a verdict, compacting session data, running a pre-store gate, and indexing into AgentDB. While it ends a session (suggesting some finality), the primary action is executing a multi-step external workflow rather than destructively deleting data.

From the tool's definition End a recorded browser session: trajectory-end with verdict, rvf compact, AIDefence pre-store gate (best-effort), and AgentDB index in the browser-sessions namespace

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs browser_session_end safely

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

browser_session_end Rate-limited

browser_session_end 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": {
    "browser_session_end": {
      "limits": [
        {
          "counter": "browser_session_end_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 Claude Flow, apply this rule, and every browser_session_end call is checked against it from then on.

FAQ

Questions about browser_session_end

What does the browser_session_end tool do? +

End a recorded browser session: trajectory-end with verdict, rvf compact, AIDefence pre-store gate (best-effort), and AgentDB index in the browser-sessions namespace. Use when native WebFetch is wrong because you need real browser automation — JS-heavy SPA scraping, login flows with cookie reuse, replay against DOM-drifted versions, AIDefence PII gating before content reaches Claude. For static HTML pages, native WebFetch is faster and free. It is categorised as a Execute tool in the Claude Flow MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on browser_session_end? +

Register the Claude Flow MCP server in PolicyLayer and add a rule for browser_session_end: 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 Claude Flow. Nothing to install.

What risk level is browser_session_end? +

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

Can I rate-limit browser_session_end? +

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

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

browser_session_end is provided by the Claude Flow MCP server (claude-flow). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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