{"uid":"cap_iasat1qoEsgwTyLv3fyQO","slug":"x402factory-ai-solanallmgptkr92mhbfnw9z7mst4e-905e42a9","name":"x402factory-ai/solanallmgptkr92mhbfnw9z7mst4e","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. Custom LLM agent KR92MHBFNW9Z7MST4E on Solana. Model gpt-5-mini, max_input_tokens=5000, max_output_tokens=5000. Preprompt preview (first 150 chars): \"You writing a prompt for a image generator to create a thumbnail of a audio news flash that is based on the topics i send you, please always just answ\". Pricing mode: agent-per-token. Prepaid price (x402) for this request: 0.017028 USDC. Estimated input tokens for pricing: 5068.","url":"https://x402factory.ai/solana/llm/gpt/KR92MHBFNW9Z7MST4E","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_ixYLXbVEdMaop1mRC1aYO","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":"A pay-per-use GPT wrapper API on Solana that lets callers send messages, create custom agents, or list agents, all paid via x402 micropayments in USDC.","exampleAgentPrompt":"Ask the x402 GPT endpoint to answer this question using gpt-5-mini with max 2000 output tokens and a 500 input token cap, paying 0.01 USDC: 'What are the top 3 benefits of proof-of-stake blockchains?'","exampleUseCases":null,"resultDescription":"Returns the GPT model's text response for direct message calls; returns a custom_id and stored configuration when creating an agent; returns a list of up to 100 recent custom agents for the paying wallet when listing. Pricing details and token counts may also be included.","failureModes":["Input tokens exceed max_input_tokens cap — server returns an error instead of under-pricing","Insufficient USDC balance on Solana wallet for the x402 payment — payment fails","Invalid or unsupported model name — returns an error","Malformed request body or missing required fields — returns 400 or similar error","x402 facilitator unavailable — payment cannot be verified","Rate limiting or OpenAI API errors propagated upstream"],"whenToPreferThis":"Choose this endpoint when you need a pay-per-use GPT API backed by Solana USDC micropayments via x402, especially if you want to create reusable custom agents with preprompts or need granular token-based pricing. Prefer over generic OpenAI calls when you want on-chain payment provenance or are building Solana-native AI workflows.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T12:51:33.626Z","isFirstParty":false}