schwab_option_expirations

Get option expiration dates for a symbol.

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-option-expirations.md

WHAT IT DOES

What schwab_option_expirations does on Open Stocks MCP

AI agents call schwab_option_expirations 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_option_expirations is rated Low

This tool only queries and returns informational data (expiration dates) about options contracts. It performs no writes, deletions, executions, or financial operations. Misuse would only expose market data already publicly available, posing minimal risk to the user or system.

From the tool's definition The tool retrieves option expiration dates for a given symbol. The verb 'Get' and the description indicate a data retrieval operation with no modification, creation, deletion, or financial transaction components.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs schwab_option_expirations 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_option_expirations, this is the rule to start with:

schwab_option_expirations Allowed

schwab_option_expirations 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_option_expirations": {}
  }
}

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_option_expirations call is checked against it from then on.

FAQ

Questions about schwab_option_expirations

What does the schwab_option_expirations tool do? +

Get option expiration dates for a symbol. 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_option_expirations? +

Register the Open Stocks MCP server in PolicyLayer and add a rule for schwab_option_expirations: 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_option_expirations? +

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

Can I rate-limit schwab_option_expirations? +

Yes. Add a rate_limit block to the schwab_option_expirations 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_option_expirations completely? +

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

schwab_option_expirations 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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