@kyaulabs/deepseek-websearch

web_search

Search the web for current, real-time, or factual information. Returns an AI-generated answer with source URLs based on full page content.

Instructions

Search the web for current, real-time, or factual information. Use when you need information beyond training data — recent events, current data, documentation lookups, or fact-checking. Returns a detailed AI-generated answer based on full page content, plus source URLs. Powered by DeepSeek's native web search.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "query": "<query>"
    },
    "name": "web_search"
  }
}

Input Schema

Name	Required	Description	Default
`query`	Yes	The search query. Be specific and include relevant keywords.
`explanation`	No	One sentence explaining why this search is needed.

Schema Changelog

Changes observed during successful MCP inspections.

First observedv1.0.1Jul 14, 2026

TDQS

A4.2/5.0

Behavior3/5

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

No annotations are provided, so the description must carry the full burden. It states the return type (AI-generated answer plus source URLs) and mentions it is powered by DeepSeek. However, it does not disclose potential latency, rate limits, or that searches may fail. It is adequate but not exhaustive.

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 four sentences. It is front-loaded with purpose, followed by usage guidance, then return information. Every sentence adds value without redundancy.

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?

The description covers purpose, usage, and return type. Given the tool's simplicity and full schema coverage, it is largely complete. However, it lacks details on possible response structure or error handling, but for a search tool this is acceptable.

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%, with both 'query' and 'explanation' parameters described in the schema. The tool description adds no additional parameter-level details beyond the schema's own descriptions. Baseline of 3 is appropriate.

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 searches the web for current, real-time, or factual information. It lists specific use cases (recent events, current data, documentation lookups, fact-checking) and distinguishes itself from using training data.

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?

The description explicitly says 'Use when you need information beyond training data' and provides clear scenarios for when to use, such as recent events, current data, documentation lookups, and fact-checking. It effectively guides the agent on appropriate use.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Deploy Server

Other Tools

web_searchA