browser_snapshot
Return a YAML aria_snapshot of the page DOM. Each interactive node is tagged with [ref=eN] (e.g. [ref=e7]). Pass that exact token as the ref arg to browser.click / browser.fill / browser.type / browser.press_key. Do NOT pass the role name ('combobox', 'button') as ref — only the eN token. Truncat...
This record as markdown: /tools/io-github-saloprj-dialogbrain/browser-snapshot.md
What browser_snapshot does on Dialogbrain
AI agents call browser_snapshot to retrieve information from Dialogbrain without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
page_id | string | Yes |
Parameters from the server's own tool schema.
Why browser_snapshot is rated Low
browser_snapshot performs a passive query operation that reads and returns the current structure of the page DOM. It has no side effects, creates no data modifications, and merely captures the existing state in a serialized format. This is a classic Read operation (retrieval/query).
From the tool's definition Tool returns a snapshot of page DOM with YAML format. Description explicitly states it "Return[s]" data without modifying anything. The tool only retrieves and formats the current state of interactive nodes for reference by other browser tools.
Attacks that exploit this kind of access
The rule that runs browser_snapshot 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_snapshot, this is the rule to start with:
browser_snapshot is read-only, so it stays allowed. 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_snapshot call is checked against it from then on.
Questions about browser_snapshot
Return a YAML aria_snapshot of the page DOM. Each interactive node is tagged with [ref=eN] (e.g. [ref=e7]). Pass that exact token as the ref arg to browser.click / browser.fill / browser.type / browser.press_key. Do NOT pass the role name ('combobox', 'button') as ref — only the eN token. Truncated at 32KB. It is categorised as a Read tool in the Dialogbrain MCP Server, which means it retrieves data without modifying state.
browser_snapshot accepts 1 parameter: page_id. 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_snapshot: 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_snapshot is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the browser_snapshot 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_snapshot. 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_snapshot 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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