# GPT-5.5 Professional Summarizer

> GPT-5.5 Professional Summarizer is a paid API for AI agents from gpt55.558686.xyz, paid per call via x402, $0.17/call, status unknown (last checked 2026-09-14).

Generates professional-grade decision summaries of long or high-stakes text using GPT-5.5, paid via x402 USDC on Base.

## Facts

- Endpoint: POST https://gpt55.558686.xyz/v1/tools/summarize/professional
- Price: $0.17/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/gpt-5-5-professional-summarizer-39cf0fc8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_lxy9KKlhBeExuZ0fpB9-n

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-5-5-professional-summarizer-39cf0fc8 -d '<json body>'
```

Example prompt: Can you give me a professional bullet-point decision summary of this 50-page merger agreement? Keep the output under 800 tokens and use a neutral temperature of 0.3.

## When to prefer this

Choose this endpoint when the input text is long or high-stakes (legal, financial, executive) and a professional-tier summary is required. It uses GPT-5.5 via a paid x402 USDC micropayment, making it suitable for single high-quality summarization calls where quality matters more than cost. Prefer over cheaper tiers when the output will inform decisions.

## Known failure modes

- Input text exceeds 700,000 character limit — request rejected
- max_tokens value exceeds 4096 — validation error
- Empty or missing text field — request rejected
- Insufficient USDC balance on Base for x402 payment — payment failure
- Temperature out of 0–2 range — validation error

## How this service works

Professional decision summaries for longer or higher-stakes material. Model tier: professional; upstream model: gpt-5.5. Price is derived from official OpenAI relative token costs with a local margin and floor. Pay up to $0.17 per request with x402 USDC on Base. Public paid calls are limited to 700000 input characters and 4096 output tokens.

## Output

A professional-quality summary of the submitted text, returned in the requested format (bullets, paragraph, or one sentence) with up to 4096 output tokens. Designed for high-stakes or lengthy material requiring clear decision-oriented distillation.

## 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-5-5-professional-summarizer-39cf0fc8/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)