---
title: "Queue a message for the configured OpenRouter MCP client"
method: POST
path: "/v1/chat/messages"
tags: ["chat"]
---

# Queue a message for the configured OpenRouter MCP client

`POST /v1/chat/messages`

## Request

- Base URL: `http://localhost:4318`
- URL: `http://localhost:4318/v1/chat/messages`
- Auth: HTTP bearer

## Headers

- `Idempotency-Key` string, required

## Request body

- object
  - `message` string, required
  - `replyTo` string, uuid
  - `purpose` 'saved_meal'
  - `photo` object
    - `mime` 'image/jpeg' | 'image/png' | 'image/webp', required
    - `base64` string, required
  - `photos` object[]
    - `mime` 'image/jpeg' | 'image/png' | 'image/webp', required
    - `base64` string, required
  - `sentAt` string, date-time
  - `targetMeal` object
    - `id` string, uuid, required
    - `expectedRevision` integer, required

## Response `202`

Success

- object

## Other responses

- `400`: Invalid input
- `401`: Missing or invalid bearer token
- `409`: Revision or idempotency conflict
- `429`: Rate limit exceeded

---

[API](https://skmtc.dev/nibb/apis/nibb-api.md) · [All operations](https://skmtc.dev/nibb/apis/nibb-api/llms.txt) · [OpenAPI document](https://skmtc.dev/nibb/apis/nibb-api/revisions/75bcd8b761ed?raw)