NVIDIA NIM Chat API
OpenAI-compatible chat completion operations
NVIDIA NIM Chat API is one of 11 APIs that NVIDIA NIM publishes on the APIs.io network, described by a machine-readable OpenAPI specification.
This API exposes 1 JSON Schema definition.
Tagged areas include Chat. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, a JSON-LD context, and 1 JSON Schema.
This API exposes 1 operation across 1 path, and defines 6 schemas. It is described by OpenAPI 3.1.0, at version 2026-05-25.
Requests are made against 2 base URLs: https://integrate.api.nvidia.com, http://localhost:8000.
Metadata
The identity and technical contract details declared by the specification.
Authentication & Security 1
NVIDIA NIM Chat API declares
1 security scheme
for authenticating requests.
It accepts HTTP bearer tokens (nvapi-...) (BearerAuth).
By default, every request must be authenticated.
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.
OpenAI-compatible chat completion operations
Schemas 6
The contract defines 6 schemas that model the data the API accepts and returns. The most detailed are ChatCompletionRequest (14 properties), ChatCompletionResponse (6 properties), ChatMessage (5 properties), ToolCall (3 properties). Each schema is shown below with its type and property counts.
Specification
The full machine-readable OpenAPI contract behind this narrative.
Source
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