# SingIt Ask: Kimi K3 (Moonshot AI) Chat Completions

> SingIt Ask: Kimi K3 (Moonshot AI) Chat Completions is a paid API for AI agents from ask.singitai.app, paid per call via x402, $0.008304/call, status unknown (last checked 2026-10-30).

Provides OpenAI-compatible chat completions using Moonshot AI's Kimi K3 long-context reasoning model, with no API key required — pay-per-call via x402.

## Facts

- Endpoint: POST https://ask.singitai.app/v1/chat/kimi-k3?utm_source=zero.xyz
- Price: $0.008304/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/singit-ask-kimi-k3-moonshot-ai-chat-completions-b3edf6ba
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_yWGMCGXAU5u1ZkQoTM-59

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-kimi-k3-moonshot-ai-chat-completions-b3edf6ba -d '<json body>'
```

Example prompt: Ask Kimi K3 from Moonshot AI: 'Explain the key differences between transformer and mamba architectures in detail' — keep the response under 1000 tokens.

## When to prefer this

Choose this endpoint when an agent specifically needs Moonshot AI's Kimi K3 model — known for strong long-context understanding and reasoning — without setting up a Moonshot AI account or API key. Ideal when you need an OpenAI-compatible interface to Kimi K3 on a pay-per-call basis with no subscription overhead. Prefer over generic LLM proxies when Kimi K3's specific capabilities (long-context, Chinese language, Moonshot AI's reasoning approach) are required.

## Known failure modes

- Payment not processed — x402 payment required before response is returned
- Message content exceeds 24,000 character limit across all messages — request rejected
- max_tokens exceeds maximum of 1200 — validation error
- Fewer than 1 message provided — minItems constraint violated
- Model unavailable or Moonshot AI backend outage — upstream error returned
- Invalid role value in messages array — schema validation failure

## How this service works

SingIt Ask: Kimi K3 (Moonshot AI) chat completions with no API key or account, OpenAI-compatible. Moonshot AI's Kimi K3 model: long-context chat and reasoning. Call it when an agent needs Kimi K3 specifically.

## Output

Returns an OpenAI-compatible chat completion JSON object containing the assistant's text response generated by Kimi K3, along with token usage statistics. The response is non-streamed and includes the message content, finish reason, and model metadata.

## 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."
  },
  "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."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/singit-ask-kimi-k3-moonshot-ai-chat-completions-b3edf6ba/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)