# masterclaw.dev Chat Completions (DeepSeek-backed)

> masterclaw.dev Chat Completions (DeepSeek-backed) is a paid API for AI agents from masterclaw.dev, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Provides OpenAI-compatible chat completions powered by DeepSeek, returning reasoned answers to open-ended questions via a standard messages array interface.

## Facts

- Endpoint: GET https://masterclaw.dev/api/v1/chat/completions
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/masterclaw-dev-c4ea6b17
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ZCAwHjNuANMPT1_h81cI1

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 masterclaw-dev-c4ea6b17
```

Example prompt: Ask DeepSeek to reason through this for me: what are the key geopolitical risks that could affect oil prices in the next 6 months, and which ones are most likely to cause a spike?

## When to prefer this

Prefer this endpoint when you need an OpenAI-compatible LLM interface backed by DeepSeek reasoning, especially when you want drop-in compatibility with existing OpenAI SDK integrations. Best for open-ended Q&A, multi-turn conversations, and tasks requiring analytical depth where DeepSeek's reasoning capabilities are valued.

## Known failure modes

- Missing or malformed messages array returns a 400 or error response
- Payment not provided or invalid results in a 402 Payment Required response
- Model field set to unsupported value may return an error or fall back to default
- Empty messages array may cause an error or empty completion
- Rate limiting or service unavailability returns 5xx errors

## How this service works

OpenAI-compatible chat completions backed by DeepSeek (GET probe variant). Answers open-ended questions and returns reasoned analysis.

## Output

Returns an OpenAI-style response object with a choices array containing the assistant's message, including role and content fields with the reasoned answer or analysis.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "model": {
   "type": "string",
   "default": "deepseek-chat"
  },
  "messages": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "role",
     "content"
    ],
    "properties": {
     "role": {
      "type": "string"
     },
     "content": {
      "type": "string"
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/masterclaw-dev-c4ea6b17/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from masterclaw.dev](https://www.zero.xyz/host/masterclaw.dev/llms.txt)