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

# Responses

> OpenAI-compatible Responses API endpoints

## Overview

OpenAI-compatible Responses API endpoints

### Available Operations

* [Send](#send) - Create a response

## Send

Creates a streaming or non-streaming response using OpenResponses API format

### Example Usage: guardrail-blocked

```go theme={null}
package main

import(
	"context"
	"os"
	openrouter "github.com/OpenRouterTeam/go-sdk"
	"github.com/OpenRouterTeam/go-sdk/models/components"
	"log"
)

func main() {
    ctx := context.Background()

    s := openrouter.New(
        openrouter.WithSecurity(os.Getenv("OPENROUTER_API_KEY")),
    )

    res, err := s.Responses.Send(ctx, components.ResponsesRequest{}, nil)
    if err != nil {
        log.Fatal(err)
    }
    if res != nil {
        defer res.ResponsesStreamingResponse.Close()

        for res.ResponsesStreamingResponse.Next() {
            event := res.ResponsesStreamingResponse.Value()
            log.Print(event)
            // Handle the event
	      }
    }
}
```

### Example Usage: insufficient-permissions

```go theme={null}
package main

import(
	"context"
	"os"
	openrouter "github.com/OpenRouterTeam/go-sdk"
	"github.com/OpenRouterTeam/go-sdk/models/components"
	"log"
)

func main() {
    ctx := context.Background()

    s := openrouter.New(
        openrouter.WithSecurity(os.Getenv("OPENROUTER_API_KEY")),
    )

    res, err := s.Responses.Send(ctx, components.ResponsesRequest{}, nil)
    if err != nil {
        log.Fatal(err)
    }
    if res != nil {
        defer res.ResponsesStreamingResponse.Close()

        for res.ResponsesStreamingResponse.Next() {
            event := res.ResponsesStreamingResponse.Value()
            log.Print(event)
            // Handle the event
	      }
    }
}
```

### Parameters

| Parameter | Type | Required | Description | Example |
| - | - | - | - | - |
| `ctx` | [context.Context](https://pkg.go.dev/context#Context) | ✅ | The context to use for the request. | |
| `responsesRequest` | [components.ResponsesRequest](../../models/components/responsesrequest.mdx) | ✅ | N/A | \{ "input": \[ \{ "content": "Hello, how are you?", "role": "user", "type": "message" } ], "model": "anthropic/claude-4.5-sonnet-20250929", "temperature": 0.7, "tools": \[ \{ "description": "Get the current weather in a given location", "name": "get\_current\_weather", "parameters": \{ "properties": \{ "location": \{ "type": "string" } }, "type": "object" }, "type": "function" } ], "top\_p": 0.9 } |
| `xOpenRouterMetadata` | [\*components.MetadataLevel](../../models/components/metadatalevel.mdx) | ➖ | Opt-in to surface routing metadata on the response under `openrouter_metadata`. Defaults to `disabled`. The legacy header `X-OpenRouter-Experimental-Metadata` is also accepted for backward compatibility. | enabled |
| `opts` | \[][operations.Option](../../models/operations/option.mdx) | ➖ | The options for this request. | |

### Response

**[\*operations.CreateResponsesResponse](../../models/operations/createresponsesresponse.mdx), error**

### Errors

| Error Type | Status Code | Content Type |
| - | - | - |
| sdkerrors.BadRequestResponseError | 400 | application/json |
| sdkerrors.UnauthorizedResponseError | 401 | application/json |
| sdkerrors.PaymentRequiredResponseError | 402 | application/json |
| sdkerrors.ForbiddenResponseError | 403 | application/json |
| sdkerrors.NotFoundResponseError | 404 | application/json |
| sdkerrors.RequestTimeoutResponseError | 408 | application/json |
| sdkerrors.PayloadTooLargeResponseError | 413 | application/json |
| sdkerrors.UnprocessableEntityResponseError | 422 | application/json |
| sdkerrors.TooManyRequestsResponseError | 429 | application/json |
| sdkerrors.InternalServerResponseError | 500 | application/json |
| sdkerrors.BadGatewayResponseError | 502 | application/json |
| sdkerrors.ServiceUnavailableResponseError | 503 | application/json |
| sdkerrors.EdgeNetworkTimeoutResponseError | 524 | application/json |
| sdkerrors.ProviderOverloadedResponseError | 529 | application/json |
| sdkerrors.APIError | 4XX, 5XX | \*/\* |