# Obol Stack Claim-Bot Chat Completions

> Obol Stack Claim-Bot Chat Completions is a paid API for AI agents from 3-obol-agent.dvlabs.dev, paid per call via x402, $0.01/call, status down (last checked 2026-09-15).

Provides a pay-per-call OpenRouter-backed LLM chat completions endpoint accessible via x402 micropayment, routed through the claim-bot service on the Obol Stack.

## Facts

- Endpoint: POST https://3-obol-agent.dvlabs.dev/services/claim-bot/v1/chat/completions
- Price: $0.01/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/obol-stack-claim-bot-chat-completions-232ae432
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_MShxQv9DgPNFisgX0Kbxn

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 obol-stack-claim-bot-chat-completions-232ae432 -d '<json body>'
```

Example prompt: Send this conversation to the Obol claim-bot using openrouter/auto and return the assistant reply — the messages are: system: 'You are a helpful assistant', user: 'What is the capital of France?' — limit to 200 tokens and use temperature 0.7.

## When to prefer this

Choose this endpoint when you need a low-cost, pay-per-call LLM chat completions API without a subscription, want to pay with USDC micropayments via the x402 protocol, or are building autonomous agents that need to call an LLM on-demand with crypto-native billing. Prefer it over traditional LLM APIs when your use case involves per-event AI calls in a blockchain or Web3 context.

## Known failure modes

- 402 Payment Required if x402 payment header is missing or insufficient
- Invalid model identifier returns an error from OpenRouter
- Malformed messages array (missing role or content) causes a 400 bad request
- Rate limiting or upstream OpenRouter errors may return 5xx responses
- Streaming errors if stream:true is set but the client doesn't handle SSE properly

## How this service works

Unlock Agent and API services with digital payments. openrouter/auto, openrouter/auto, openrouter/auto.

## Output

Returns an OpenAI-compatible chat completion JSON object containing the assistant's generated message, the model used (openrouter/auto), a completion ID, finish reason, and choice index. The response mirrors the standard OpenAI chat.completions format.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "model": {
   "type": "string",
   "description": "Model identifier advertised in the 402 accepts[].extra or /api/services.json."
  },
  "stream": {
   "type": "boolean"
  },
  "messages": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "role",
     "content"
    ],
    "properties": {
     "role": {
      "enum": [
       "system",
       "user",
       "assistant",
       "tool"
      ],
      "type": "string"
     },
     "content": {
      "oneOf": [
       {
        "type": "string"
       },
       {
        "type": "array"
       },
       {
        "type": "null"
       }
      ]
     }
    },
    "additionalProperties": true
   }
  },
  "max_tokens": {
   "type": "integer",
   "minimum": 1
  },
  "temperature": {
   "type": "number",
   "maximum": 2,
   "minimum": 0
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "id": "chatcmpl-example",
  "model": "openrouter/auto",
  "object": "chat.completion",
  "choices": [
   {
    "index": 0,
    "message": {
     "role": "assistant",
     "content": "Hello! How can I help you today?"
    },
    "finish_reason": "stop"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/obol-stack-claim-bot-chat-completions-232ae432/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 3-obol-agent.dvlabs.dev](https://www.zero.xyz/host/3-obol-agent.dvlabs.dev/llms.txt)