---
title: "Send a Message as a User Input"
method: POST
path: "/v2.0/endpoint/inject"
tags: ["Endpoints"]
---

# Send a Message as a User Input

`POST /v2.0/endpoint/inject`

Sends a message as a user input in an active conversation, so an AI Agent can process the input and continue the conversation. For example, to follow up after user inactivity or trigger a reply after an external API event.

## Request body

- object
  - `userId` string, email, required
  - `text` string, required
  - `data` object, required
  - `URLToken` string, required
  - `sessionId` string, required

## Response `200`

Returns success message.

## Other responses

- `400` — Bad request - invalid or missing required arguments.
- `401` — The request has not been applied because it lacks valid authentication credentials for the target resource.
- `402` — Upgrade your Plan to increase your Quota.
- `403` — The server understood the request but refuses to authorize it.
- `404` — Endpoint or session not found.
- `405` — The method received in the request-line is known by the origin server but not supported by the target resource.
- `409` — The request conflicts with current state of the server.
- `413` — The request entity is larger than limits defined by server.
- `500` — Internal server error.
- `501` — The server does not support the functionality required to fulfill the request.
- `502` — The server, while acting as a gateway or proxy, received an invalid response from an inbound server it accessed while attempting to fulfill the request.
- `503` — The server is not ready to handle the request.
- `504` — The server, while acting as a gateway or proxy, did not receive a timely response from an upstream server it needed to access in order to complete the request.

---

[API](https://skmtc.net/cognigy/apis/simulator-openapi-rest-ful-api-reference.md) · [All operations](https://skmtc.net/cognigy/apis/simulator-openapi-rest-ful-api-reference/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/cognigy/simulator-openapi-rest-ful-api-reference/revisions/85b2872bdfb7/schema)