schwab_stream_quotes

Get real-time equity quote snapshots from Schwab streaming.

SERVEROpen Stocks MCP SOURCEopen-agent-tools/open-stocks-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/open-agent-tools-open-stocks-mcp/schwab-stream-quotes.md

WHAT IT DOES

What schwab_stream_quotes does on Open Stocks MCP

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

RISK

Why schwab_stream_quotes is rated Low

This tool retrieves real-time stock quote data from a streaming service. It performs a read-only query operation that returns market information without creating, modifying, deleting, or executing any trades or code. The worst-case misuse would be information gathering or reconnaissance, which poses minimal risk. Classified as Read/low severity.

From the tool's definition Tool name 'schwab_stream_quotes' and description 'Get real-time equity quote snapshots from Schwab streaming' indicate retrieval of market data with no modification or side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs schwab_stream_quotes safely

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

schwab_stream_quotes Allowed

schwab_stream_quotes 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": {
    "schwab_stream_quotes": {}
  }
}

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

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

FAQ

Questions about schwab_stream_quotes

What does the schwab_stream_quotes tool do? +

Get real-time equity quote snapshots from Schwab streaming. It is categorised as a Read tool in the Open Stocks MCP MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on schwab_stream_quotes? +

Register the Open Stocks MCP server in PolicyLayer and add a rule for schwab_stream_quotes: 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 Open Stocks MCP. Nothing to install.

What risk level is schwab_stream_quotes? +

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

Can I rate-limit schwab_stream_quotes? +

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

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

schwab_stream_quotes is provided by the Open Stocks MCP server (open-agent-tools/open-stocks-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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