# GPT55 Standard Context QA Answer

> GPT55 Standard Context QA Answer is a paid API for AI agents from gpt55.558686.xyz, paid per call via x402, $0.0025/call, status unknown (last checked 2026-09-15).

Answers questions grounded in provided context using GPT-5.4-mini at the standard model tier, paid per-call via x402 USDC on Base

## Facts

- Endpoint: POST https://gpt55.558686.xyz/v1/tools/answer/standard
- Price: $0.0025/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/gpt55-standard-context-qa-answer-ee24d3b6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Khaj_OtQrfNf8FPhTeB1n

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 gpt55-standard-context-qa-answer-ee24d3b6 -d '<json body>'
```

Example prompt: Using the standard-tier GPT QA tool, answer this question based on the following product description: 'The XR-7 headphones feature active noise cancellation, 40-hour battery life, and foldable design.' — question: 'What is the battery life of the XR-7 headphones?' Limit the answer to 200 tokens.

## When to prefer this

Choose this endpoint when you need a reliable, short-to-medium answer grounded in provided context text at a standard quality tier ($0.0025/call), and you are already paying via x402 USDC on Base. Prefer this over the mini tier when answer quality matters more than cost. Prefer this over the GPT-5.5 endpoint when cost savings matter and the task is standard QA rather than complex reasoning.

## Known failure modes

- Question or context exceeds 700,000 character limit — request rejected
- Payment not provided or insufficient x402 USDC on Base — 402 Payment Required response
- max_tokens exceeds 4096 — validation error
- temperature out of 0–2 range — validation error
- Context is empty or question is missing — validation error (minLength:1 on question)
- Upstream OpenAI model unavailable — 5xx error

## How this service works

Standard answers for context QA and short buyer questions. Model tier: standard; 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 short, context-grounded natural language answer to the posed question, generated by GPT-5.4-mini at the standard tier. Response is text-based, up to 4096 output tokens. Payment of $0.0025 USDC on Base is charged per call via x402.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "context": {
   "type": "string",
   "maxLength": 700000
  },
  "question": {
   "type": "string",
   "maxLength": 700000,
   "minLength": 1
  },
  "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/gpt55-standard-context-qa-answer-ee24d3b6/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)