# GPT-5.4-mini Mini Summarizer (x402)

> GPT-5.4-mini Mini Summarizer (x402) is a paid API for AI agents from gpt55.558686.xyz, paid per call via x402, $0.0025/call, status unknown (last checked 2026-09-16).

Generates low-cost, concise summaries of text (notes, tickets, triage content) using the GPT-5.4-mini model, paid via x402 USDC on Base.

## Facts

- Endpoint: POST https://gpt55.558686.xyz/v1/tools/summarize/mini
- Price: $0.0025/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/gpt-5-4-mini-mini-summarizer-x402-d0cbd82a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_iNe7XgeyiV_G_l_YBttPH

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 gpt-5-4-mini-mini-summarizer-x402-d0cbd82a -d '<json body>'
```

Example prompt: Can you summarize this 2,000-word support ticket into bullet points, keeping it under 200 tokens? Here's the text: [ticket text]

## When to prefer this

Choose this endpoint when you need fast, cheap summarization for high-volume triage tasks like support tickets, short notes, or quick digests, and cost is a priority. It uses the mini model tier which is optimized for low-cost, short-output summaries rather than deep reasoning or long-form generation. Prefer over full-model endpoints when 4096 tokens of output is sufficient and per-call cost must stay at or below $0.0025 USDC.

## Known failure modes

- Input text exceeds 700,000 character limit — request rejected
- max_tokens exceeds 4096 — request rejected
- Payment not provided or insufficient USDC — 402 payment required error
- Empty or missing text field — validation error
- Temperature out of 0–2 range — request rejected
- Upstream OpenAI model unavailable — 5xx error

## How this service works

Low-cost short summaries for notes, tickets, and quick triage. Model tier: mini; upstream model: gpt-5.4-mini. Price is derived from official OpenAI relative token costs with a local margin and floor. Pay up to $0.0025 per request with x402 USDC on Base. Public paid calls are limited to 700000 input characters and 4096 output tokens.

## Output

A concise summary of the input text in the requested format (bullets, paragraph, or one sentence), up to 4096 output tokens, generated by GPT-5.4-mini and returned as a text response.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "maxLength": 700000,
   "minLength": 1
  },
  "format": {
   "type": "string",
   "description": "Desired summary style, e.g. bullets, paragraph, one sentence."
  },
  "max_tokens": {
   "type": "integer",
   "maximum": 4096,
   "minimum": 1
  },
  "temperature": {
   "type": "number",
   "maximum": 2,
   "minimum": 0
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/gpt-5-4-mini-mini-summarizer-x402-d0cbd82a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from gpt55.558686.xyz](https://www.zero.xyz/host/gpt55.558686.xyz/llms.txt)