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JerBouma

Finance Toolkit

economics_rates

Read-onlyIdempotent

Fetch central bank policy rates, short and long-term interest rates, government bond yields, and corporate bond metrics for any country. Supports custom date ranges and quarterly frequency.

Instructions

Interest rate data (central bank policy rates, short/long-term rates, government bond yields, ICE BofA corporate bond series, EURIBOR, ECB rates, Federal Reserve rates). Requires countries='United States' — use comma-separated values for multiple countries. Do NOT use tickers= for this tool. Supports start_date/end_date and quarterly=true.

Available indicators: get_central_bank_policy_rate, get_short_term_interest_rate, get_long_term_interest_rate, get_government_bond_yield, get_euribor_rates, get_european_central_bank_rates, get_federal_reserve_rates, get_ice_bofa_effective_yield, get_ice_bofa_option_adjusted_spread, get_ice_bofa_total_return, get_ice_bofa_yield_to_worst.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
indicatorYesName of the specific metric to calculate, e.g. 'get_asset_turnover_ratio'. Required — omitting it returns the list of available indicators.
countriesNoComma-separated country names, e.g. 'United States,Germany,Japan'.
start_dateNoStart of the date range in YYYY-MM-DD format.2021-06-22
end_dateNoEnd of the date range in YYYY-MM-DD format.2026-06-21
quarterlyNoReturn quarterly data instead of annual when True.
growthNoReturn period-over-period growth rates instead of absolute values.
lagNoNumber of periods to lag when computing growth rates.
roundingNoNumber of decimal places to round results to.
periodNoObservation frequency, e.g. 'monthly', 'quarterly', or 'annual'.
gmdb_sourceNoUse the OECD Global Macro Data Bank as the data source when True.
short_termNoValue for short_term.
maturitiesNoComma-separated bond maturity labels, e.g. '3month,2year,10year'.
nominalNoValue for nominal.
rateNoValue for rate.
maturityNoValue for maturity.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior3/5

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

Annotations already declare readOnlyHint, idempotentHint, and non-destructive nature. Description adds the indicator list and parameter constraints but no additional behavioral insights beyond what annotations provide.

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?

Four sentences, each adding value. Front-loaded with purpose, then usage guidelines, then indicator list. No filler or redundancy.

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?

Despite 100% schema coverage, many parameters (growth, lag, rounding, period, gmdb_source, short_term, maturities, nominal, rate, maturity) are not explained in the description. Their schema descriptions are terse, and the description does not clarify their purpose or common usage, leaving gaps for a complex tool with 15 parameters. Output schema exists, but parameter semantics remain incomplete.

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

Parameters5/5

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

The description adds crucial meaning beyond the schema: requires 'countries' with default 'United States', warns against 'tickers', and lists all available indicators with their exact names. Schema coverage is 100% but description enriches usage.

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

Purpose5/5

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

The description clearly states it provides interest rate data, listing specific indicators and data types (central bank rates, bond yields, etc.). It distinguishes itself from sibling tools by focusing on rates.

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

Usage Guidelines4/5

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

The description gives explicit usage instructions: requires 'countries' parameter with comma-separated values, warns against using 'tickers', and mentions support for date range and quarterly flags. It does not directly compare with sibling tools but provides clear context.

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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