Properties
| Name | Type | Description |
|---|---|---|
| role | string | This is the role of the message author. For a mock user message, the role is always 'user' @default 'user' |
| content | string | This is the content of the user message. This is the message that the user would have sent. |
JSON Schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"$id": "#/components/schemas/ChatEvalUserMessageMock",
"title": "ChatEvalUserMessageMock",
"type": "object",
"properties": {
"role": {
"type": "string",
"enum": [
"user"
],
"description": "This is the role of the message author.\nFor a mock user message, the role is always 'user'\n@default 'user'",
"default": "user"
},
"content": {
"type": "string",
"description": "This is the content of the user message.\nThis is the message that the user would have sent.",
"example": "Hello, how are you?",
"maxLength": 1000
}
},
"required": [
"role",
"content"
]
}
Work with this as data
Every JSON Schema here is available over the APIs.io API and to AI agents over MCP.
MCP server
One button, every client — Claude, Cursor, VS Code and the rest.
https://apis.io/mcp
Tools for schemas
4 MCP tools reach this
find_json_schemasBrowse and filter every JSON Schema in the catalog.apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.resolveTurn a domain, URL or GitHub org into the provider it belongs to.find_cohortsEvery scored population of providers in the catalog.
Call it yourself
curl for this page
This JSON Schema
curl "https://apis.io/api/v1/json-schemas/vapi-chatevalusermessagemock"
All schemas
curl "https://apis.io/api/v1/json-schemas?limit=25"
Discovery needs no key. Ratings and market analysis are Pro.
Get an API key
Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.
A second provider on the same verified email joins the account you already have.