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show_news

Fetch recent company news headlines, summaries, and sources for a stock ticker. Configure days to look back and max articles.

Instructions

Recent company news from Finnhub for a single ticker — headline, summary, source, published timestamp, URL. Default lookback is 7 days, capped to limit items (default 10). For news across all holdings in one call, prefer get_brief which aggregates the last 24h.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
tickerYesStock ticker symbol (e.g. AAPL)
daysNoDays to look back (default: 7)
limitNoMax articles to return (default: 10)
Behavior4/5

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

No annotations provided, so description carries full burden. It discloses default lookback (7 days), capping to limit, and returned article fields. Lacks mention of rate limits, authentication, or any non-obvious behaviors, but covers core traits well.

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?

Two sentences, zero wasted words. Information is front-loaded and every sentence adds value.

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

Completeness5/5

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

For a 3-parameter tool with no output schema or annotations, the description covers purpose, parameters, defaults, comparison with sibling, and return contents. No gaps.

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?

All 3 parameters are 100% described in schema. Description adds context beyond schema: default values for days (7) and limit (10), and explains what data each article contains (headline, summary, etc.).

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?

Description clearly states it retrieves 'Recent company news from Finnhub for a single ticker' and lists returned fields (headline, summary, source, timestamp, URL). It distinguishes from sibling get_brief by noting it is for a single ticker vs aggregated holdings.

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

Usage Guidelines5/5

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

Explicitly tells when to use this tool vs the alternative: 'For news across all holdings in one call, prefer get_brief which aggregates the last 24h.' Also documents default lookback and limit.

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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