> For clean Markdown of any page on these docs, append `.md` to the page URL
> Full documentation index: https://you.com/docs/llms.txt
> Search over these docs using a free, read-only MCP server (it is the best way to pick the right API(s) for the job and understand how to use them): https://you.com/docs/_mcp/server
> Access web search, web fetch, and deep research tools using our product MCP server: https://api.you.com/mcp (use `/mcp/research` and `/mcp/finance` paths for Research and Finance Research respectively)
> Call live Web Search for free: append `?profile=free` to the MCP server path
> OpenAPI spec index: https://you.com/docs/openapi.json
> How to authenticate: https://you.com/docs/using-the-api/authentication
> Changelog: https://you.com/docs/changelog
> Full onboarding instructions for agents: https://you.com/SKILL.md

## Knowledge for POST /v1/search

`POST /v1/search` now accepts `"knowledge": "core"`, which queries licensed data providers in parallel with the web index and returns matching records in `results.knowledge`. Coverage spans stocks, prices and rates, macroeconomics, company data, sports, politics and government, and weather and climate.

Each knowledge result carries a `title`, a `description` holding the value, an `attribution` array naming the data provider, and an optional `as_of` date. Up to 25 results come back, limited to those relevant to the query. When none are relevant, `results.knowledge` is omitted and the response contains web and news results only.

On the [VerticalRTK fast set](https://github.com/TakoData/VerticalRTK/blob/main/data/verticalrtk_fast.jsonl) benchmark, accuracy rose from 64.5% (Web Search API with highlights) to 84.2% (with highlights and Knowledge).

Knowledge is included in the base Web Search API rate of \$5.00 per 1,000 calls. It is available on `POST /v1/search` only, and existing requests are unaffected until they set the parameter.

Read the Knowledge guide