{"uid":"cap_yJhzYFLZrRJftDTE_1RF0","slug":"x402factory-ai-solanallmgpt-2-7b8d58fb","name":"x402Factory Solana LLM GPT API","description":"Solana GPT wrapper API using x402 payments. Default direct call: model gpt-5-mini, max_output_tokens=2000, fixed price 0.01 USDC for up to 1000 input tokens. For all other settings the price is computed per model as (input_tokens * input_price_per_million + max_output_tokens * output_price_per_million) / 1,000,000, with a minimum of 0.001 USDC and always rounded up to 6 decimals. Optional max_input_tokens lets you cap the input tokens used for pricing; if the message is longer than this cap the server returns an error instead of under-pricing. Optional action=message (or omitting action) performs a direct GPT call with the given message. Optional action=create creates a custom agent with the given message as preprompt for 0.001 USDC (no OpenAI call), stores a base_price_usdc using (max_input_tokens_for_agent or 1000) + preprompt + max_output_tokens, and returns a custom_id. Optional action=list lists up to 100 recent custom agents for the paying wallet for 0.001 USDC without calling OpenAI. Custom agents can be called via POST /solana/llm/gpt with custom_id, or POST /solana/llm/gpt/{custom_id}. Each custom agent has a fixed price per call based on its stored preprompt, model, max_output_tokens and max_input_tokens; if the runtime message is longer than max_input_tokens the server returns an error. This specific request uses model gpt-5-mini with max_output_tokens=2000. Pricing mode: default. Prepaid price (x402) for this request: 0.010000 USDC.","url":"https://x402Factory.ai/solana/llm/gpt","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"unknown","protocol":"x402","network":"base","amountUsd":null,"per":"call","confidence":"unknown"},"accepted":[{"kind":"unknown","protocol":"x402","network":"base","amountUsd":null,"per":"call","confidence":"unknown"}]},"paymentMethods":[{"uid":"pm_2amCCYgIxmjwSKdl4Fmc4","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0","costPer":"request","priority":0,"asset":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Pay-per-use GPT wrapper on Solana via x402 micropayments, supporting direct LLM calls, custom agent creation, agent listing, and agent deletion with dynamic USDC pricing","exampleAgentPrompt":"Ask the x402Factory Solana GPT endpoint to summarize the history of the Roman Empire using model gpt-4o with a max output of 500 tokens — I'm okay paying per token in USDC via x402.","exampleUseCases":null,"resultDescription":"Returns the GPT-generated text response for direct calls; for agent creation returns a custom_id and stored base price; for list action returns up to 100 recent custom agents for the paying wallet; for delete action confirms removal of the specified agent.","failureModes":["Input tokens exceed max_input_tokens cap — server returns error instead of under-pricing","Insufficient USDC balance for x402 payment — payment fails and request is rejected","Invalid or unknown custom_id for agent call or delete — returns not found error","Unsupported model name provided — returns model error","Malformed action parameter — returns bad request","Message too long for chosen token pricing config — returns token limit error"],"whenToPreferThis":"Choose this endpoint when you need to call OpenAI GPT models with per-use Solana USDC micropayments via x402 protocol, especially when building agentic workflows that require dynamic token-based pricing, custom persistent agents with preprompts, or wallet-scoped agent management — all without needing an OpenAI API key directly.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T18:34:11.701Z","isFirstParty":false}