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x402-mcp

x402-mcp

Official
by x402node
OverviewSchemaSourceRelated ServersDiscussionsAdmin
JavaScript
Remote

cn402_sanfu_sanjiu

Get exact dates of Chinese sanfu (dog days) and sanjiu (coldest period) for any year to support traditional Chinese medicine seasonal therapy.

Instructions

Chinese dog days / sanfu / 三伏 / hottest period of year / Chinese coldest period / sanjiu / 三九 / Chinese folk seasonal periods / Chinese medicine seasonal therapy / fu tian / 伏天 / Chinese summer heat / Chinese winter cold. Exact dates for the three sanfu (dog day) periods and three sanjiu (coldest) periods of a given year. Used in traditional Chinese medicine seasonal therapy.

Price: unknown on Base (auto-paid in USDC).

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "cn402_sanfu_sanjiu"
  }
}

Input Schema

NameRequiredDescriptionDefault
yearNoYear YYYY (optional, default current year)

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

B3.3/5.0
Behavior2/5

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

No annotations are provided, so description carries full burden. It states it outputs dates but does not describe format, structure, or any side effects. The price note is irrelevant to agent behavior. Lacks disclosure of mutations, auth needs, or return structure.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Description is somewhat cluttered with a keyword dump at the start followed by explanatory text and a price note. The key information is present but could be more concise and better structured.

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 tool with one optional param and no output schema, the description explains the output concept (dates for 6 periods) but lacks detail on format or structure. The price note adds noise. Adequate but not fully 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% with a clear description for the sole optional parameter 'year'. The description adds no extra meaning beyond the schema's 'Year YYYY (optional, default current year)'. Baseline 3 applies.

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 the tool provides exact dates for sanfu and sanjiu periods for a given year, specifying both Chinese terms and English descriptions. It distinguishes from siblings like cn402_jieqi or cn402_lunar by focusing specifically on these folk seasonal periods used in TCM.

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?

Description mentions it is used in traditional Chinese medicine seasonal therapy, implying context, but does not explicitly state when to use vs. alternatives like cn402_tcm_season or cn402_jieqi. No when-not guidance or sibling comparisons.

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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