# x402factory-ai Solana GPT Wrapper (6BNTBUF2DASXXWCAD2)

> x402factory-ai Solana GPT Wrapper (6BNTBUF2DASXXWCAD2) 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).

Calls GPT models (default gpt-4o-mini) on Solana via x402 micropayments, with support for direct chat, custom agent creation, and agent listing

## Facts

- Endpoint: POST https://x402factory.ai/solana/llm/gpt/6BNTBUF2DASXXWCAD2
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402factory-ai-solanallmgpt6bntbuf2dasxxwcad2-15aa6507
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_yV-xzMn5wyocwaR3Uxm9Q

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability x402factory-ai-solanallmgpt6bntbuf2dasxxwcad2-15aa6507 -d '<json body>'
```

Example prompt: Send this message to GPT using my Solana wallet via x402: 'Explain the difference between proof-of-work and proof-of-stake in 3 paragraphs' — use model gpt-4o-mini with max 2000 output tokens and cap input at 1000 tokens.

## When to prefer this

Use this endpoint when you need to call GPT models and pay per-use with Solana USDC via the x402 protocol, especially if you want granular token-based pricing, the ability to create reusable custom agents with stored preprompts, or need to manage multiple AI personas billed to a Solana wallet. Prefer over Base-chain equivalents when operating in the Solana ecosystem.

## Known failure modes

- Message exceeds max_input_tokens cap — server returns error instead of under-pricing
- Invalid or unsupported model name returns an error
- Insufficient USDC balance on Solana wallet causes payment failure
- Malformed x402 payment header causes rejection
- custom_id not found when trying to call a custom agent
- Payment amount mismatch due to rounding or token count discrepancy

## 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. Custom LLM agent 6BNTBUF2DASXXWCAD2 on Solana. Model gpt-5-mini, max_input_tokens=5000, max_output_tokens=5000. Preprompt preview (first 150 chars): "You writing a voice over script for a audio newsflash, can you read these topics and create a script for a tts agent, make sure it sounds natural and ". Pricing mode: agent-per-token. Prepaid price (x402) for this request: 0.017048 USDC. Estimated input tokens for pricing: 5119.

## Output

Returns the GPT model's text response for direct calls; or a custom_id and stored configuration for agent creation; or a list of up to 100 recently created custom agents with their metadata and pricing. Pricing is computed per token with a minimum of 0.001 USDC, rounded up to 6 decimal places.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402factory-ai-solanallmgpt6bntbuf2dasxxwcad2-15aa6507/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402factory.ai](https://www.zero.xyz/host/x402factory.ai/llms.txt)