# Blockbuster.ai Free ChatGPT Endpoint

> Blockbuster.ai Free ChatGPT Endpoint is a paid API for AI agents from blockbuster-ai.vercel.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Provides a free ChatGPT-style text generation response given a user query string, via the Blockbuster.ai multi-API hub

## Facts

- Endpoint: POST https://blockbuster-ai.vercel.app/api/free-chatgpt
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blockbuster-ai-free-chatgpt-endpoint-ae8091eb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hdGdDT-ktVwzb03bdUAY7

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 blockbuster-ai-free-chatgpt-endpoint-ae8091eb -d '<json body>'
```

Example prompt: Use the Blockbuster.ai ChatGPT endpoint to answer this question: 'What are the main differences between supervised and unsupervised machine learning?'

## When to prefer this

Choose this endpoint when you need quick access to ChatGPT-style text generation without managing your own OpenAI API key, and you are already using the x402 micropayment protocol on Base chain for API access. It is suitable for simple query-response interactions where a single string input is sufficient.

## Known failure modes

- Payment failure via x402 micropayment if USDC balance is insufficient
- Empty or malformed query string resulting in poor or error response
- Upstream OpenAI API outage causing failure
- Rate limiting or quota exceeded on the Blockbuster.ai platform
- Invalid request body format returning a non-success response

## How this service works

115+ premium paid endpoints: Social Media, AI/ML, E-commerce, Finance, Data Intelligence, Media, Tools. x402 micropayments on Base chain.

## Output

Returns a JSON object with a 'success' boolean and a 'data' object containing the AI-generated text response to the input query.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "query": {
   "type": "string",
   "description": "Input parameter for the API call"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "data": {
   "type": "object"
  },
  "success": {
   "type": "boolean"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/blockbuster-ai-free-chatgpt-endpoint-ae8091eb/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from blockbuster-ai.vercel.app](https://www.zero.xyz/host/blockbuster-ai.vercel.app/llms.txt)