> ## Documentation Index
> Fetch the complete documentation index at: https://docs.crazyrouter.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Responses Web Search

> Responses web search verified against Crazyrouter production on 2026-03-23

> Last updated: 2026-06-06

# Responses Web Search

```
POST /v1/responses
```

As of March 23, 2026, Crazyrouter production has verified `gpt-5.5` on the Responses API using:

* `tools: [{ "type": "web_search_preview" }]`
* an `output` sequence of `web_search_call`, then `message`

<Note>
  Claude does not currently support `POST /v1/responses`. For Claude web search, use `POST /v1/chat/completions` or the native Claude path instead.
</Note>

***

## Minimal Request

```bash theme={null}
curl https://api.crazyrouter.com/v1/responses \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "gpt-5.5",
    "input": "Find one AI news item from March 2026.",
    "tools": [
      {
        "type": "web_search_preview"
      }
    ]
  }'
```

Observed production response shape:

```json theme={null}
{
  "output": [
    {
      "type": "web_search_call"
    },
    {
      "type": "message"
    }
  ]
}
```

***

## Current Verification Rule

If you need to confirm that the model actually searched the web, the safest current checks are:

* whether `web_search_call` appears in `output`
* whether the final answer still arrives as a `message`

<Warning>
  This page no longer keeps older outdated examples, and it does not document un-revalidated search parameters as the current primary path.
</Warning>