schwab_option_chain

Get option chain 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-chain.md

WHAT IT DOES

What schwab_option_chain does on Open Stocks MCP

AI agents call schwab_option_chain 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_chain is rated Low

This tool retrieves market data (option chain information) for a given stock symbol. It performs a read-only query without creating orders, executing trades, or modifying any account state. The tool has no side effects and poses minimal risk if misused by an AI agent, as it only exposes publicly available market data.

From the tool's definition Tool name is 'schwab_option_chain' and description states 'Get option chain for a symbol' — a retrieval operation with no modification or execution of trades.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs schwab_option_chain 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_chain, this is the rule to start with:

schwab_option_chain Allowed

schwab_option_chain 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_chain": {}
  }
}

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_chain call is checked against it from then on.

FAQ

Questions about schwab_option_chain

What does the schwab_option_chain tool do? +

Get option chain 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_chain? +

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

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

Can I rate-limit schwab_option_chain? +

Yes. Add a rate_limit block to the schwab_option_chain 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_chain completely? +

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

schwab_option_chain 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.

KEEP EXPLORING

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