nexos.ai Chat API is one of 16 APIs that nexos.ai publishes on the APIs.io network, described by a machine-readable OpenAPI specification.
Tagged areas include Chat. The published artifact set on APIs.io includes an OpenAPI specification.
This API exposes
1 operation
across 1 path,
and defines 42 schemas.
It is described by OpenAPI 3.2.0, at version 1.0.0.
Requests are made against a single base URL, https://api.nexos.ai.
1 operations1 paths42 schemas1 POST
Metadata
The identity and technical contract details declared by the specification.
Specification
OpenAPI 3.2.0
API Version
1.0.0
Base URL
https://api.nexos.ai
Authentication
HTTP Bearer, API Key
Resource Areas
1
Authentication & Security 2
nexos.ai Chat API declares
2 security schemes
for authenticating requests.
It accepts HTTP bearer tokens (bearerAuth).
An API key is passed in the header as X-Api-Key (apiKeyHeader).
By default, every request must be authenticated.
apiKeyHeader — Authenticate by sending your nexos API key in the X-Api-Key header (e.g. X-Api-Key: nexos-... for a user key or X-Api-Key: nexos-team-... for a team key). This…
Paths & Operations 1
Across 1 path, the API surfaces 1 operation — 1 POST. Each is listed below with its method, path, parameters, and response codes.
Chat 1
Generate a response from conversation messages.
POST
/v1/chat/completions
Create chat completion
post-chat-completions-v11 parambody→ 200400402500
Schemas 42
The contract defines 42 schemas that model the data the API accepts and returns. The most detailed are ChatCompletionsRequest (31 properties), chat_completions_messages_ChatCompletionRequestAssistantMessage (7 properties), ChatCompletionTool (5 properties), RagMCP (5 properties). Each schema is shown below with its type and property counts.
ChatCompletionFunctionCallOption
object
Specifying a particular function via {"name": "myfunction"} forces the model to call that function.
Controls which (if any) tool is called by the model. none means the model will not call any tool and instead generates a message. auto means the model can pick…
Static predicted output content, such as the content of a text file that is being regenerated.
2 properties2 required
ChatCompletionModalities
array
Output types that you would like the model to generate for this request. Most models are capable of generating text, which is the default: ["text"] To request…
Options for streaming response. Only set this when you set stream: true.
1 property
ChatCompletionRequestDeveloperMessage
object
Developer-provided instructions that the model should follow, regardless of messages sent by the user. With o1 models and newer, developer messages replace the…
Developer-provided instructions that the model should follow, regardless of messages sent by the user. With o1 models and newer, use developer messages for thi…
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