poll_picker_session

Poll a Picker session to check if the user has finished selecting photos. If selection is complete (mediaItemsSet=true), returns the selected media items. Call repeatedly until mediaItemsSet is true.

ServerGoogle Photos MCP Server
CategoryRead

How to control poll_picker_session ↓

WHAT IT DOES

What poll_picker_session does on Google Photos MCP Server

AI agents call poll_picker_session to retrieve information from Google Photos MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

THE RISK

Low Risk

Why poll_picker_session needs a policy

This tool reads the result of a user's photo selection from a picker session. It queries state (mediaItemsSet flag) and returns metadata about selected items. No data is created, modified, or deleted. The polling mechanism is a read operation checking for completion of a user interaction. Blast radius is minimal—misuse could only expose which photos a user selected, not cause data loss or unauthorized modifications.

From the tool's definition Tool polls a picker session to retrieve selected media items when user selection is complete. Returns 'selected media items' with no modification, creation, or deletion of data. The action is retrieval-only with side effects limited to checking session state.

Documented attack patterns abuse exactly the kind of access poll_picker_session gives an agent:

POLICY

How to control poll_picker_session

PolicyLayer is an MCP gateway — it sits between your AI agents and Google Photos MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for poll_picker_session:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "poll_picker_session": {}
  }
}

poll_picker_session is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Google Photos MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

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EXPLORE

Related tools and policies

More Google Photos MCP Server tools

Execute start_auth Start Google OAuth authentication flow. Spins up a temporary local server, returns a URL t Write add_album_enrichment Add a text or location enrichment to a Google Photos album. Write add_media_to_album Add existing media items to a Google Photos album. Maximum 50 items per call. Write create_album Create a new Google Photos album Write create_album_with_media Create a new album and upload multiple local files to it in one step. Handles partial fail Write create_picker_session Create a Google Photos Picker session. Returns a pickerUri the user must open in their bro Write set_album_cover Set the cover photo of a Google Photos album. Write upload_media Upload a local media file to Google Photos. Reads bytes from filePath and creates a new me

All 19 Google Photos MCP Server tools →

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about poll_picker_session

What does the poll_picker_session tool do? +

Poll a Picker session to check if the user has finished selecting photos. If selection is complete (mediaItemsSet=true), returns the selected media items. Call repeatedly until mediaItemsSet is true. It is categorised as a Read tool in the Google Photos MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on poll_picker_session? +

Register the Google Photos MCP Server MCP server in PolicyLayer and add a rule for poll_picker_session: 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 Google Photos MCP Server. Nothing to install.

What risk level is poll_picker_session? +

poll_picker_session is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit poll_picker_session? +

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

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

poll_picker_session is provided by the Google Photos MCP Server MCP server (savethepolarbears/google-photos-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Google Photos MCP Server tool call.

Start from Google Photos MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →

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19 Google Photos MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.