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CSOAI-ORG

Web Research MCP Server

web_search

Perform web searches via DuckDuckGo, returning top results with titles, URLs, and snippets. No API key needed.

Instructions

Search the web using DuckDuckGo. Returns titles, URLs, and snippets for the top results. No API key required.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
queryYes
limitNo
api_keyNo
Behavior3/5

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

With no annotations provided, the description bears full burden. It discloses that no API key is required and returns titles, URLs, and snippets, but lacks details on rate limits, result limitations, or error handling. Merely adequate for a search tool.

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 exceptionally concise with two short sentences, front-loading the core action and return format. Every sentence adds value with no redundancy or filler.

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?

For a simple search tool with no output schema and 3 parameters, the description covers the basic purpose and return format but lacks parameter behavioral details and usage context. Partially adequate but not full.

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

Parameters2/5

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

Schema coverage is 0% and the description adds no parameter-specific information. It does not explain the 'query' parameter, the 'limit' default or behavior, nor the purpose of 'api_key' (beyond stating no API key required). Parameters remain largely mysterious.

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 the tool performs web search using DuckDuckGo, specifying the resource (web) and action (search). It distinctively sets it apart from sibling tools like get_weather or browse_page.

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 implies usage for general web searches but provides no explicit guidance on when to use this tool versus siblings like deep_research or research_topic. No exclusions or alternatives are mentioned.

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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