# Agent Hub – Meta Llama 4 Scout Chat Completions (Multimodal)

> Agent Hub – Meta Llama 4 Scout Chat Completions (Multimodal) is a paid API for AI agents from agents.torbrooknews.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-13).

Provides OpenAI-compatible chat completions using Meta Llama 4 Scout with multimodal image input and tool calling, billed per-request via x402 micropayments.

## Facts

- Endpoint: GET https://agents.torbrooknews.com/v1/llama4/chat/completions?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-hub-meta-llama-4-scout-chat-completions-multimodal-6b523ee1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_lIPDqdiVFjX9fQZTp72-s

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 agent-hub-meta-llama-4-scout-chat-completions-multimodal-6b523ee1
```

Example prompt: Ask Llama 4 Scout to look at this product image and write a concise marketing description for it — keep it under 150 words and feel free to use its vision capability to describe what it sees.

## When to prefer this

Choose this endpoint when you need a multimodal (vision + text) LLM with tool calling support, want OpenAI SDK compatibility without a traditional API key, and prefer pay-per-call micropayment billing via x402 USDC. Ideal for agents avoiding subscription lock-in or needing Meta Llama 4 Scout's specific multimodal capabilities. Prefer over sibling endpoints (e.g. GLM 4.7 Flash or Llama 3.3 70B) when image input is required or when Scout's architecture is specifically desired.

## Known failure modes

- Payment failure: x402 payment not sent or insufficient USDC balance results in 402 error
- Prompt too long: exceeding context window returns a 400 or truncation error
- Image format unsupported: non-standard image URLs or encoding may cause a 400 error
- Tool call malformed: badly structured tool definitions may cause parsing errors or ignored tools
- Rate limiting: high request volume may trigger 429 throttling
- Model unavailability: upstream Llama 4 Scout service outage returns 503

## How this service works

OpenAI-compatible chat completions on Meta Llama 4 Scout, multimodal (image input) with tool calling. Set your OpenAI SDK base URL to https://agents.torbrooknews.com/v1/llama4 and pay $0.004 per request with x402 instead of an API key. Same request/response shape as OpenAI (tool calling, image input, streaming supported), up to 2048 output tokens. Also callable as GET with the same fields as query parameters.

## Output

An OpenAI-compatible chat completion JSON object containing the assistant's message, optional tool call payloads, finish reason, token usage counts, and (if streaming) server-sent event chunks. Supports up to 2048 output tokens.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "prompt"
     ],
     "properties": {
      "prompt": {
       "type": "string",
       "description": "User message"
      },
      "system": {
       "type": "string",
       "description": "Optional system message"
      },
      "max_tokens": {
       "type": "integer"
      },
      "temperature": {
       "type": "number"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-hub-meta-llama-4-scout-chat-completions-multimodal-6b523ee1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agents.torbrooknews.com](https://www.zero.xyz/host/agents.torbrooknews.com/llms.txt)