quota_probe

Fire 2-3 lightweight authenticated reads and report Retry-After / quota state plus a

SERVERSpotify SOURCE@novalux12/spotify-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/novalux12-spotify-mcp/quota-probe.md

WHAT IT DOES

What quota_probe does on Spotify

AI agents call quota_probe to retrieve information from Spotify without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why quota_probe is rated Low

Even though quota_probe only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs quota_probe safely

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

quota_probe Allowed

quota_probe is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

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

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Spotify, apply this rule, and every quota_probe call is checked against it from then on.

FAQ

Questions about quota_probe

What does the quota_probe tool do? +

Fire 2-3 lightweight authenticated reads and report Retry-After / quota state plus a. It is categorised as a Read tool in the Spotify MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on quota_probe? +

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

What risk level is quota_probe? +

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

Can I rate-limit quota_probe? +

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

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

quota_probe is provided by the Spotify MCP server (@novalux12/spotify-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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