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SingIt Ask – GPT-5.5 Chat Completions
x402
SingIt Ask – GPT-5.5 Chat Completions is a paid API for AI agents from ask.singitai.app, paid per call via x402, $0.021313/call, status unknown (last checked 2026-10-30).
Provides OpenAI GPT-5.5 chat completions via an OpenAI-compatible API, requiring no API key or account, billed per call via x402.
Price / call$0.021313
Success—
StatusUnknown
How this service works
SingIt Ask: GPT-5.5 (OpenAI) chat completions with no API key or account, OpenAI-compatible. OpenAI's GPT-5.5 model: general-purpose chat, coding and reasoning. Call it when an agent needs GPT-5.5 specifically.
Output
Returns an OpenAI-compatible chat completion object containing the assistant's generated text response, role, and usage metadata (tokens used). Streaming is not supported; the full reply is returned in one response.
Example use cases
Coding explanation with GPT-5.5
“Use GPT-5.5 to explain how Python decorators work, with a practical example showing a logging decorator — limit the response to 600 tokens.”
Multi-turn reasoning conversation
“I need to have a back-and-forth reasoning conversation with GPT-5.5 about the pros and cons of microservices vs monoliths — send the whole conversation history and get a thoughtful reply.”
Drafting a professional email
“Have GPT-5.5 draft a professional follow-up email to a client who missed our meeting yesterday, keeping it concise and friendly — limit it to about 400 tokens.”
Technical details
Endpoint
POSThttps://ask.singitai.app/v1/chat/gpt-5.5?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an agent specifically needs GPT-5.5 from OpenAI and does not have an OpenAI API key, or when using a pay-per-call model via x402 micropayments is preferred over a subscription. It is OpenAI-compatible so it integrates with existing OpenAI SDK tooling with a base URL swap. Prefer sibling endpoints for image generation, speech synthesis, or web search tasks.
Side effects
- Message content exceeds 24000 character limit — request rejected
- max_tokens set above 1200 — request rejected
- Fewer than 1 message in the messages array — validation error
- Payment not provided or insufficient USDC via x402 — 402 Payment Required
- Invalid model ID specified — model not found error
- Messages array exceeds 40 items — request rejected
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| model | string | Any model id from GET /v1/models; the ceiling follows its price. Omit for the default model. |
| stream | boolean | Streaming is not offered. |
| messages | array | The conversation, oldest first. |
| max_tokens | integer | The longest answer, in tokens. The payment ceiling grows with it; the charge follows what was used. |
Tags
x402
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