present_tab

SERVERDialogbrain SOURCEhttps://api.dialogbrain.com/mcp

High RISK CLASS

Category Execute

Parameters 11 required

Recommended Rate-limitedsee the rule below

Registry record Grade D, identity unverified Pull the record →

This record as markdown: /tools/io-github-saloprj-dialogbrain/present-tab.md

WHAT IT DOES

What present_tab does on Dialogbrain

AI agents invoke present_tab to trigger actions in Dialogbrain. 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.

Parameter	Type	Required	Description
`page_id`	string	Yes	page_id returned by browser.open for the tab you want to share. Must be a tab still open in the agent's browser context.

Parameters from the server's own tool schema.

RISK

Why present_tab is rated High

This tool triggers an external operation — changing the screen-share visible to all participants in a live voice call. It manipulates a real-time communication session state, which is an Execute-class action. While it doesn't delete data or move money, misuse could display inappropriate or misleading content to all call participants, giving it medium severity.

From the tool's definition Put one of the agent's browser tabs on the live call's screen-share... Only usable while the agent is in an active voice call. THIS IS THE ONLY WAY TO CHANGE WHAT THE ROOM SEES

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs present_tab safely

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

present_tab Rate-limited

present_tab 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": {
    "present_tab": {
      "limits": [
        {
          "counter": "present_tab_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 Dialogbrain, apply this rule, and every present_tab call is checked against it from then on.

FAQ

Questions about present_tab

What does the present_tab tool do? +

Put one of the agent's browser tabs on the live call's screen-share. Pass the page_id you got from browser.open. Only usable while the agent is in an active voice call. THIS IS THE ONLY WAY TO CHANGE WHAT THE ROOM SEES — scrolling or pressing keys changes the page, never which tab is shared. The shared tab stays the active share until you call present_tab with a different page_id, close the tab via browser.close, or the call ends. Returns the page_id, url and title actually on screen; check them before telling anyone what they are looking at, and use present_status to re-check later. It is categorised as a Execute tool in the Dialogbrain MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

What parameters does present_tab accept? +

present_tab accepts 1 parameter: page_id. Required: page_id. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on present_tab? +

Register the Dialogbrain MCP server in PolicyLayer and add a rule for present_tab: 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 Dialogbrain. Nothing to install.

What risk level is present_tab? +

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

Can I rate-limit present_tab? +

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

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

present_tab is provided by the Dialogbrain MCP server (https://api.dialogbrain.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Dialogbrain, and thousands of servers like it.

This server

All 232 Dialogbrain tools → High-risk tools on this server →

Across the catalogue

All high-risk MCP tools → The MCP Attack Database →

Guides

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