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x402Factory Solana LLM GPT API
x402
x402Factory Solana LLM GPT API is a paid API for AI agents from x402factory.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
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
Price / call$0.01
Success—
StatusUnknown
How this service works
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.
Output
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.
Example use cases
Example prompt
“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.”
Technical details
Endpoint
POSThttps://x402Factory.ai/solana/llm/gptWhen to prefer
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.
Side effects
- 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
Tags
x402
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