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longbridge

longbridge

Official

News Search

news_search
Read-onlyIdempotent

Search for news articles using a keyword. Returns results with title, description, source, publish date, and relevance score, with pagination support.

Instructions

Search news articles by keyword. Returns news_list[]{id, title, description, source_name, publish_at (RFC3339), score}. Paginate with score+publish_at_timestamp+id cursors.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
keywordYesSearch keyword
limitNoMax results to return (default: 20)
Behavior4/5

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

Annotations already signal readOnlyHint, idempotentHint, and openWorldHint. The description adds concrete details about the return format (news_list with specific fields) and pagination method (using score+publish_at_timestamp+id cursors), providing transparency beyond the annotations.

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?

The description is concise with two sentences: one stating the purpose, the other specifying return fields and pagination. No unnecessary information, and it is well-structured for quick comprehension.

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

Completeness4/5

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

Given the simple nature of the tool (2 parameters, no output schema), the description adequately covers return format and pagination. It lacks details on sorting or language options, but for a basic news search, it is fairly complete.

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 coverage is 100%, so the baseline is 3. The description does not add new semantic information for the parameters (keyword and limit) beyond what is already in the schema. The pagination detail is about usage, not parameter semantics.

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 'Search news articles by keyword.' It specifies the exact resource (news articles) and action (search), along with the return fields. This distinguishes it from sibling tools like 'news' which may have different functionality.

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

Usage Guidelines3/5

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

The description does not provide explicit guidance on when to use this tool versus alternatives. While it mentions pagination, it lacks explicit context for usage scenarios or exclusions. The basic functionality is implied but not differentiated from siblings.

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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