# SingIt Ask

> SingIt Ask is a paid API for AI agents from ask.singitai.app, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-31).

Returns a single AI-generated answer using DeepSeek v4.1 Flash via an OpenAI-compatible chat completions endpoint, billed per successful response.

## Facts

- Endpoint: POST https://ask.singitai.app/v1/chat/completions?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/singit-ask-c7873d9e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oW-vU_-zRQXf5PEY6-oof

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 singit-ask-c7873d9e -d '<json body>'
```

Example prompt: Ask SingIt Ask to explain the difference between supervised and unsupervised machine learning in simple terms, keeping the response under 500 tokens.

## When to prefer this

Choose SingIt Ask when you need a pay-per-use, no-subscription LLM completion using the DeepSeek v4.1 Flash model, especially when cost control matters (charged only on success) and you want OpenAI-compatible API format. Prefer it over subscription-based LLM APIs for sporadic, one-off queries where you don't want to commit to a monthly plan. Ideal for agents that need occasional AI-generated answers with micropayment billing via x402.

## Known failure modes

- Payment not processed — answer not returned and no charge applied
- max_tokens exceeded 1200 limit — request rejected with validation error
- Malformed messages array — missing required role/content fields causes error
- Model unavailable or overloaded — timeout or 503 response
- Insufficient USDC balance — payment fails and no completion returned

## How this service works

Language-model answers paid per answer over x402 in USDC on Base or Solana. No accounts or API keys. Free to try: model free/deepseek-v4.1-flash, 20 answers a day, no payment.

## Output

An OpenAI-compatible chat completion response containing a single assistant message with the AI-generated answer, produced by the DeepSeek v4.1 Flash model. The response is only returned (and charged) when the answer is successfully generated, up to the specified max_tokens limit.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "model": {
   "type": "string",
   "examples": [
    "deepseek-v4.1-flash",
    "claude-opus-5.5",
    "gpt-5.5",
    "gemini-3.1-pro"
   ],
   "description": "Any model id from GET /v1/models; the ceiling follows its price. Omit for the default model. Free to try, no payment: free/deepseek-v4.1-flash."
  },
  "stream": {
   "enum": [
    false
   ],
   "type": "boolean",
   "description": "Streaming is not offered."
  },
  "messages": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "role",
     "content"
    ],
    "properties": {
     "role": {
      "enum": [
       "system",
       "user",
       "assistant"
      ],
      "type": "string"
     },
     "content": {
      "type": "string",
      "description": "Plain text; all messages together under 24000 characters."
     }
    }
   },
   "maxItems": 40,
   "minItems": 1,
   "description": "The conversation, oldest first."
  },
  "max_tokens": {
   "type": "integer",
   "default": 800,
   "maximum": 1200,
   "minimum": 1,
   "description": "The longest answer, in tokens. The payment ceiling grows with it; the charge follows what was used."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "model": "singit-ask",
  "object": "chat.completion",
  "choices": [
   {
    "index": 0,
    "message": {
     "role": "assistant",
     "content": "Around the Colosseum, try…"
    },
    "finish_reason": "stop"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/singit-ask-c7873d9e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ask.singitai.app](https://www.zero.xyz/host/ask.singitai.app/llms.txt)