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by net.crawlora
OverviewDiscussionsAdmin

wapo_article

Read-only

Fetch public Washington Post article metadata and body paragraphs from a canonical url. Metered articles truncated by the site are unavailable rather than returned with an incomplete body. Use wapo_headlines for story lists, wapo_sections to browse topics, or wapo_news for the general feed.

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": {
      "url": "<url>"
    },
    "name": "wapo_article"
  }
}

Input Schema

NameRequiredDescriptionDefault
urlYesCanonical Washington Post article URL

Output Schema

NameRequiredDescriptionDefault
dataYesThe tool result payload (shape varies per tool; see each tool's docs resource).

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • addedInput schema / properties / url / description
      Added value: +"Canonical Washington Post article URL"
  2. First observed

TDQS

A4.5/5.0
Behavior4/5

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

Annotations already declare readOnlyHint and openWorldHint, so the safety profile is covered. The description adds non-obvious behavior: metered/truncated articles are treated as unavailable rather than returned with an incomplete body, which is genuinely useful context beyond the annotations. It does not mention auth or rate limits, so not a full 5.

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?

Three tight sentences, front-loaded with the primary action and scope, then the truncation caveat, then the alternative routing. No wasted words.

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

Completeness5/5

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

An output schema exists, so return values need not be explained. For a single-param, read-only fetch tool, the description covers purpose, the truncation behavior, and sibling routing, leaving nothing an agent needs to call it correctly.

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% and the single url parameter is already documented as a canonical Washington Post article URL. The description only echoes 'canonical url' without adding format or validation detail, so baseline 3 is correct when the schema does the heavy lifting.

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?

States a specific verb (Fetch), resource (Washington Post article metadata and body paragraphs), and the input anchor (canonical url). It also names the sibling tools it is not, so an agent can distinguish it from wapo_headlines/sections/news without opening a schema.

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?

Explicitly routes the agent: 'Use wapo_headlines for story lists, wapo_sections to browse topics, or wapo_news for the general feed.' This gives clear when-to-use-this vs when-to-use-alternatives guidance.

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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