{"uid":"cap_qfr6Q5dJW1PcLcfbD3tnL","slug":"x402-nvidia-stepfun-step-3-7-flash-via-micropayment-b24f8522","name":"X402-NVIDIA StepFun Step-3-7-Flash via Micropayment","description":"Access 48+ NVIDIA NIM AI models via x402 micropayments. Chat completions, vision, safety, translation, and more.","url":"https://x402-nvidia.vercel.app/api/stepfun-step-3-7-flash","method":"POST","headers":{},"bodySchema":null,"responseSchema":{"type":"object","example":{"choices":[{"message":{"role":"assistant","content":"Hello!"}}]},"properties":{"choices":{"type":"array","description":"Model responses"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.157502","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.157502/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.157502","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.157502","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_-h9NduLWP-kRQlCNWV5AN","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.157502","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Run inference on the StepFun Step-3-7-Flash language model via NVIDIA NIM, paying per-call with USDC micropayments using the x402 protocol.","exampleAgentPrompt":"Using the StepFun Step-3-7-Flash model on NVIDIA NIM, generate a response to this message: 'Explain the difference between supervised and unsupervised learning in three sentences.'","exampleUseCases":[{"title":"Quick code explanation without subscription","prompt":"I need a fast answer and don't want to sign up for another API subscription — use the StepFun Step-3-7-Flash model on NVIDIA NIM to explain what this Python function does: 'def fib(n): return n if n <= 1 else fib(n-1) + fib(n-2)'"},{"title":"Pay-per-call creative writing burst","prompt":"Using the StepFun Step-3-7-Flash model via NVIDIA NIM with a micropayment, write a punchy two-paragraph product description for a wireless ergonomic keyboard aimed at remote developers."},{"title":"On-demand customer FAQ generation","prompt":"I'm building a one-off FAQ section and just need a single inference call — use the StepFun Step-3-7-Flash model on NVIDIA NIM to generate five common customer questions and concise answers for a subscription meal-kit service."}],"resultDescription":"A chat completion response object containing a 'choices' array, where each choice includes a message with a role ('assistant') and the generated text content from the StepFun Step-3-7-Flash model.","failureModes":["Payment not provided or insufficient USDC — returns HTTP 402 requiring x402 payment","Invalid message format in request body — returns 400 bad request","Model unavailable or NVIDIA NIM backend error — returns 500 or 503","Malformed JSON in request — parsing error","Rate limit exceeded — returns 429"],"whenToPreferThis":"Choose this endpoint when you need fast text generation from the StepFun Step-3-7-Flash model specifically, want to pay per call without a subscription, and are operating in an environment that supports x402 USDC micropayments. Prefer this over OpenAI or Anthropic endpoints when you want NVIDIA-hosted inference with crypto-native payment rails.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:33:20.670Z","isFirstParty":false}