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drmartell

thetadata-mcp

by drmartell

option_snapshot_greeks_third_order

Retrieve real-time third-order Greeks for options on a given expiration, with customizable strike, right, and rate inputs.

Instructions

[PROFESSIONAL] Real-time third-order greeks for all contracts on an expiration.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
rightNoThe right (call or put) of the contract.both
strikeNoThe strike price of the contract in dollars (ie `100.00` for `$100.00`), or `*` for all strikes.*
symbolYesThe stock or index symbol, or underlying symbol for options.
max_dteNoIf specified, only contracts with a full calendar day 'Days to Expiration' (DTE) less than or equal to this number will be returned.
versionNoUsed to adjust Greeks calculation methodology. "1" uses a fixed .15 DTE for 0DTE; "latest" uses real TTE (down to a minimum of 1 hour)latest
min_timeNoFilters snapshots to include only data with a timestamp greater or equal to the specified value (HH:mm:ss.SSS format).
rate_typeNoThe interest rate type to be used in a Greeks calculation.sofr
expirationYesThe expiration of the contract in `YYYY-MM-DD` or `YYYYMMDD` format, or `*` for all expirations.
rate_valueNoThe interest rate, as a percent, to be used in a Greeks calculation.
stock_priceNoThe underlying stock price to be used in the Greeks calculation.
strike_rangeNoUsed to specify a filter to limit the number of contracts returned relative to the underlying's spot price. Will return the specified number of strikes above and below the spot price, as well as the at-the-money strike.
annual_dividendNoThe annualized expected dividend amount to be used in Greeks calculations.
Behavior2/5

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

With no annotations provided, the description carries the full burden for behavioral disclosure. It only states 'Real-time' and does not describe return format, pagination, calculation methodology, or any side effects.

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

Conciseness4/5

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

The description is a single sentence, front-loaded with the core purpose. The '[PROFESSIONAL]' prefix is unnecessary but does not significantly harm conciseness.

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

Completeness2/5

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

Given 12 parameters and no output schema or annotations, the description is minimal. It doesn't explain what data is returned, how filtering works (right, strike, etc.), or how third-order greeks differ from other orders.

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

Parameters3/5

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

Schema description coverage is 100%, so the schema fully documents all 12 parameters. The description adds no parameter-specific semantics beyond what the schema already provides, matching the baseline score.

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?

The description clearly identifies the tool as providing real-time third-order greeks for all contracts on an expiration, distinguishing it from first/second-order greeks tools. However, it lacks an explicit verb like 'retrieves' or 'returns'.

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 is provided on when to use this tool over option_snapshot_greeks_first_order, second_order, or all. It only implies real-time use via the word 'Real-time', but does not mention exclusions or alternatives.

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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