{"uid":"cap_soxbwwUphbrPbgP8AFfu-","slug":"agent402-tools-llm-premium-inference-o3-o3-mini-eb1b211c","name":"agent402.tools LLM Premium Inference (o3/o3-mini)","description":"LLM inference proxy (Premium tier) - o3 or o3-mini reasoning models. Supports vision (up to 2 image URLs) and structured output (response_format: json_object or json_schema). No API key needed; pay per call via x402. Input capped at 32k chars, output at 2048 tokens.","url":"https://agent402.tools/api/llm-premium","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"stop":{"type":"string","description":"Stop sequence(s)"},"model":{"type":"string","description":"Model ID - o3 or o3-mini"},"top_p":{"type":"number","description":"Nucleus sampling (0-1)"},"messages":{"type":"array","description":"Array of {role, content} objects. content can be a string or array of {type:'text',text} and {type:'image_url',image_url:{url,detail}} blocks"},"max_tokens":{"type":"number","description":"Max output tokens (default 1024, cap 2048)"},"temperature":{"type":"number","description":"Sampling temperature (0-2)"},"response_format":{"type":"object","description":"Optional: {type:\"json_object\"} or {type:\"json_schema\",json_schema:{name,schema}}"}}},"responseSchema":{"type":"json","example":{"model":"o3-mini","usage":{"total_tokens":20,"prompt_tokens":12,"completion_tokens":8},"choices":[{"message":{"role":"assistant","content":"Hello! How can I help you today?"},"finish_reason":"stop"}],"provider":"openai"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.5","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":"$0.5/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.5","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.5","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Pu2VP9bKi3So055Q6zeVu","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.5","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Proxies requests to OpenAI o3 or o3-mini reasoning models with vision and structured output support, paid per-call via x402 micropayment protocol","exampleAgentPrompt":"Use the o3-mini reasoning model to analyze this image (https://example.com/chart.png) and return a JSON object with fields 'summary' and 'key_insights' — keep the output under 512 tokens.","exampleUseCases":null,"resultDescription":"Returns a completion response from the o3 or o3-mini model, optionally structured as a JSON object or validated against a provided JSON schema. Includes the generated text content and up to 2048 output tokens. Supports multi-turn message arrays with interleaved text and image inputs.","failureModes":["Payment not attached or insufficient USDC — x402 payment required before response is served","Input exceeds 32k character cap — request rejected","max_tokens exceeds 2048 cap — clamped or rejected","Invalid model ID (not 'o3' or 'o3-mini') — model not found error","Malformed image URL or more than 2 image URLs provided — vision input error","Invalid response_format schema — structured output generation fails","Model timeout on complex reasoning tasks — upstream timeout returned"],"whenToPreferThis":"Choose this endpoint when you need OpenAI's o3 or o3-mini reasoning models without managing your own OpenAI API key or billing, and want to pay per-call via x402. Ideal for agent workflows that need occasional high-quality reasoning or vision analysis without a subscription. Prefer over the standard tier when you need o3's deeper chain-of-thought reasoning. Choose over self-hosted alternatives when you want zero credential management.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T19:14:06.643Z","isFirstParty":false}