browser_wait_for
Wait for a selector to appear OR a navigation URL to match a glob pattern. Provide ref (selector) OR url_pattern (glob).
This record as markdown: /tools/io-github-saloprj-dialogbrain/browser-wait-for.md
What browser_wait_for does on Dialogbrain
AI agents invoke browser_wait_for 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 |
|---|---|---|---|
ref | object | — | |
page_id | string | Yes | |
timeout_ms | integer | — | |
url_pattern | object | — |
Parameters from the server's own tool schema.
Why browser_wait_for is rated High
This tool triggers execution of browser-level monitoring and control logic. It waits for specific conditions (selector appearance or URL match) before proceeding, which is characteristic of Execute-class tools that run operations with side effects dependent on runtime state.
From the tool's definition Tool performs a blocking wait operation that monitors DOM state or navigation, which is a form of browser automation control flow manipulation.
Attacks that exploit this kind of access
The rule that runs browser_wait_for 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 browser_wait_for, this is the rule to start with:
browser_wait_for 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.
The button opens the PolicyLayer dashboard: create your workspace, connect Dialogbrain, apply this rule, and every browser_wait_for call is checked against it from then on.
Questions about browser_wait_for
Wait for a selector to appear OR a navigation URL to match a glob pattern. Provide ref (selector) OR url_pattern (glob). 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.
browser_wait_for accepts 4 parameters: ref, page_id, timeout_ms, url_pattern. Required: page_id. The full parameter table on this page comes from the server's own tool schema.
Register the Dialogbrain MCP server in PolicyLayer and add a rule for browser_wait_for: 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.
browser_wait_for is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the browser_wait_for 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 browser_wait_for. 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.
browser_wait_for 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.
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