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NVIDIA Nemotron Safety Reasoning API via x402
x402
NVIDIA Nemotron Safety Reasoning API via x402 is a paid API for AI agents from x402-nvidia.vercel.app, paid per call via x402, $0.157979/call, status unknown (last checked 2026-09-14).
Runs NVIDIA's Nemotron safety reasoning model to evaluate content for safety, policy compliance, and reasoning via micropayment-gated API
Price / call$0.157979
Success—
StatusUnknown
How this service works
Access 48+ NVIDIA NIM AI models via x402 micropayments. Chat completions, vision, safety, translation, and more.
Output
Returns a choices array containing the model's safety reasoning output, including an assistant message with a safety classification or reasoning about whether the input content is safe or policy-compliant.
Example use cases
Chatbot response safety screening
“Before we show this customer support response to users, can you check it with Nemotron to make sure it doesn't violate any policies? The response is: 'We understand your frustration. Here's how to work around the system limitation.'”
User-generated content moderation at scale
“I need to evaluate whether this user comment is safe to publish on our platform. Run it through NVIDIA's safety reasoning model: 'Just discovered an exploit that lets you bypass account restrictions. Sharing details in DMs.'”
LLM output compliance verification
“Can you use Nemotron to assess if this generated article snippet meets our content guidelines before it goes live? Here's the text: 'While controversial, some argue that reducing regulations would improve market efficiency.'”
Technical details
Endpoint
POSThttps://x402-nvidia.vercel.app/api/nemotron-safety-reasoningWhen to prefer
Use this endpoint when you need NVIDIA's specialized Nemotron safety reasoning model specifically — which is designed for evaluating AI outputs for safety and policy compliance — rather than a general-purpose chat or moderation model. Prefer this over generic content moderation APIs when you need LLM-grade reasoning about safety, not just keyword filtering. The x402 micropayment model means no subscription required, pay per call at $0.158 USDC.
Side effects
- Payment not provided or invalid x402 micropayment — returns 402 Payment Required
- Malformed input choices array — returns 400 Bad Request
- NVIDIA NIM backend unavailable — returns 502 or 503
- Rate limit exceeded — returns 429 Too Many Requests
- Content too long for model context window — returns 400 or truncation error
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| choices | array | Model responses |
Tags
x402
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