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Tavily MCP Server

tavily_search

Search the web for current information on any topic. Returns snippets and source URLs for news, facts, or data.

Instructions

Search the web for current information on any topic. Use for news, facts, or data beyond your knowledge cutoff. Returns snippets and source URLs.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
queryYesSearch query
topicNoThe category of the search. This will determine which of our agents will be used for the searchgeneral
countryNoBoost search results from a specific country. Must be a full country name (e.g., 'United States', 'Japan', 'Germany'). ISO country codes (e.g., 'us', 'jp') are not supported. Available only if topic is general. See https://docs.tavily.com/documentation/api-reference/search for the full list of supported countries.
end_dateNoWill return all results before the specified end date. Required to be written in the format YYYY-MM-DD
start_dateNoWill return all results after the specified start date. Required to be written in the format YYYY-MM-DD.
time_rangeNoThe time range back from the current date to include in the search results
exact_matchNoOnly return results containing the exact phrase(s) in quotes in your query
max_resultsNoThe maximum number of search results to return
search_depthNoThe depth of the search. 'basic' for generic results, 'advanced' for more thorough search, 'fast' for optimized low latency with high relevance, 'ultra-fast' for prioritizing latency above all elsebasic
include_imagesNoInclude a list of query-related images in the response
exclude_domainsNoList of domains to specifically exclude, if the user asks to exclude a domain set this to the domain of the site
include_domainsNoA list of domains to specifically include in the search results, if the user asks to search on specific sites set this to the domain of the site
include_faviconNoWhether to include the favicon URL for each result
include_raw_contentNoInclude the cleaned and parsed HTML content of each search result
include_image_descriptionsNoInclude a list of query-related images and their descriptions in the response
Behavior2/5

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

Without annotations, the description should disclose behavioral constraints like rate limits or auth needs; it only states 'returns snippets and source URLs,' missing safety implications or performance characteristics.

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 with no waste; front-loaded verb and use case. Highly concise and structured.

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?

With 15 parameters including date filters, domain controls, and search depth, the description fails to overview these capabilities. The agent gets minimal context about the tool's full range.

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 detailed parameter descriptions, so the description adds no extra parameter meaning beyond that. Baseline of 3 is appropriate.

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

Purpose4/5

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 information, with examples like news and facts. It distinguishes from sibling tools by using 'search' as the verb, though no explicit differentiation is given.

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?

It advises use for information beyond the knowledge cutoff, implying timeliness, but lacks when-not-to-use or alternatives to sibling tools like tavily_crawl or tavily_extract.

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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