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Open-Agent-Tools

Open Stocks MCP

schwab_find_tradable_options

Filter tradable option contracts by expiration date, option type, and strike price for a given stock symbol.

Instructions

Find tradable option contracts filtered by expiration, type, and strike.

Args:
    symbol: Stock ticker symbol
    expiration_date: Filter to contracts expiring on this date (YYYY-MM-DD)
    option_type: 'call' or 'put'
    strike: Strike price to filter on

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
symbolYes
expiration_dateNo
option_typeNo
strikeNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations provided, and the description does not disclose behavioral traits like read-only nature, authentication requirements, rate limits, or what 'tradable' implies. Minimal beyond the basic query function.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Very concise and front-loaded: one-line summary followed by four parameter descriptions. Every sentence adds value; no redundant information.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Describes core functionality adequately but does not address optional nature of parameters beyond required symbol, nor does it distinguish from many similar sibling tools. Output schema exists, so return value details are not needed, but usage context is incomplete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

While schema has 0% coverage, the description adds meaningful context for all four parameters: symbol ('Stock ticker symbol'), expiration_date ('YYYY-MM-DD' format), option_type ('call' or 'put'), and strike ('strike price'). Each parameter gets a clear explanation beyond the schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

Description clearly states 'Find tradable option contracts' with specific filters (expiration, type, strike). Uses a specific verb and resource, but does not differentiate from similar sibling tools like 'find_options' or 'options_chains'.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance on when to use this tool versus alternatives. Missing context on prerequisites, when it's appropriate, or when not to use it.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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