web-search

name	web-search
description	USE WHEN the user asks for current facts, recent news, prices/rates, or anything that may have changed since the training cutoff. Plans the query, runs WebSearch / WebFetch (or an MCP fetch tool), and synthesizes a cited answer with date + source URL.

web-search — fresh, cited answers

When to use

Trigger when the question depends on current state:

• prices, rates, exchange rates, stock quotes, ETF NAV
• recent news (last 6 months)
• newly released product specs, library versions
• regulations / policies that may have changed
• comparison ("X vs Y") where one side could have shipped updates

Do NOT use for stable facts (math, history, well-settled science) — answer directly. Web searches add latency and cost.

How to run

1. Plan the query. Convert vague Chinese questions into 2–4 targeted English keywords. Strip filler words. Example: "美元兑人民币今天什么价" → USD CNY exchange rate today.

2. Search. Prefer in this order:

   • WebSearch tool (if available)
   • mcp__fetch__fetch (MCP fetch server) for known URLs
   • WebFetch for known docs / official sources

3. Verify recency. Open at least one source, confirm the publication date is within the relevant window. If only stale results, say so explicitly — do NOT pretend the answer is current.

4. Synthesize. Output:

   • One-sentence answer with the number / fact
   • Bullet of 2–3 source citations: [Title](URL) — YYYY-MM-DD
   • If sources disagree, surface the disagreement

Failure modes to avoid

• Quoting yesterday's number as "today's"
• Citing a self-media blog when an official source exists (always prefer central-bank / exchange / vendor official pages)
• Doing zero searches but writing a confident-sounding paragraph from memory
• Not stating the date — the user can't tell if it's fresh

Output template

{one-sentence answer with the number}

Sources:
- [{title}]({url}) — {YYYY-MM-DD}
- [{title}]({url}) — {YYYY-MM-DD}