## TL;DR

Full parameter reference lives at you.com/docs/api-reference/search/v1-search. If your agent cannot answer stock prices or weather from You.com search, add "knowledge": "core" to the request body.

## Fix

1. Full parameter reference lives at you.com/docs/api-reference/search/v1-search.
   Expected: You get the expected result; the problem is gone.

## When to use

- You are setting up or using this You.com feature.
- The symptom matches: add knowledge core for live data, it costs 140ms.

## When NOT to use

- Unrelated You.com issues (different feature, different failure).
- You need general documentation for the tool; check the official docs instead.

## Compatibility

Reported against You.com.

## Variant phrasings

### add knowledge core for live data, it costs 140ms

## Why it happens

Official docs (You.com Knowledge parameter page): documents a query-time gotcha for agents answering live-data questions. Add "knowledge": "core" to the web search call and Knowledge picks sources at query time, so you never need a router that guesses whether the question is a stock price, a forecast, or a contract total. It adds roughly 140ms to the call. Skip it when your workload never touches off-web or real-time data or is latency sensitive.

## Edge cases

- If your error message differs even slightly, this is probably a different issue; search the exact text.
- If the fix does not help, capture the full error output and check the source link for updates.