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GPT-5.4-mini Structured JSON Extraction (Standard Tier)
x402
GPT-5.4-mini Structured JSON Extraction (Standard Tier) is a paid API for AI agents from gpt55.558686.xyz, paid per call via x402, $0.00293/call, status unknown (last checked 2026-09-14).
Extracts and classifies structured JSON fields from text using a GPT-5.4-mini upstream model, returning schema-conformant output for downstream automation.
Price / call$0.00293
Success—
StatusUnknown
How this service works
Standard structured extraction and classification-friendly JSON output. 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 $0.00293 per request with x402 USDC on Base. Public paid calls are limited to 700000 input characters and 4096 output tokens.
Output
Returns a structured JSON object with values for the requested fields or schema, extracted and classified from the input text using GPT-5.4-mini. Output respects any provided JSON schema and is capped at 4096 tokens.
Example use cases
Example prompt
“Extract the fields 'company_name', 'invoice_date', and 'total_amount' from this invoice text and return them as structured JSON: 'Invoice #4821 from Acme Corp dated March 14 2025 for a total of $1,240.00 due within 30 days.'”
Technical details
Endpoint
POSThttps://gpt55.558686.xyz/v1/tools/extract-json/standardWhen to prefer
Choose this endpoint when you need reliable, schema-guided structured extraction from text and want a cost-effective standard-tier model (GPT-5.4-mini) with x402 micropayment billing per call. Prefer it over chat-completion endpoints when your use case is purely extraction or classification rather than open-ended generation, and when you need deterministic JSON output conforming to a specified schema.
Side effects
- Text exceeds 700,000 character limit — returns 400 or truncation error
- Requested fields not present in input text — returns null or empty values for missing fields
- Invalid JSON schema provided — returns 400 schema validation error
- max_tokens too low to fit full structured output — returns truncated JSON
- Payment not authorized or insufficient USDC balance — returns 402 payment required
- Temperature out of range [0,2] — returns 400 validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| text | string | |
| fields | array | |
| schema | object | |
| max_tokens | integer | |
| temperature | number |
Tags
x402
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