# NetIntel GPT-4.1-nano Chat Completions

> NetIntel GPT-4.1-nano Chat Completions is a paid API for AI agents from netintel-production-440c.up.railway.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).

Proxies OpenAI-compatible chat completion requests to GPT-4.1-nano via pay-per-call x402 micropayments, returning structured chat completion responses

## Facts

- Endpoint: POST https://netintel-production-440c.up.railway.app/openai/gpt-4-1-nano
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/netintel-gpt-4-1-nano-chat-completions-d2f44fd4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_038Rv9WiHXD_37Rw8B5rF

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 netintel-gpt-4-1-nano-chat-completions-d2f44fd4 -d '<json body>'
```

Example prompt: Ask GPT-4.1-nano to summarize the following text in 3 bullet points using pay-per-call pricing — no API key needed: 'Artificial intelligence is transforming industries by automating complex tasks, improving decision-making, and enabling new forms of human-computer interaction.'

## When to prefer this

Choose this endpoint when you need GPT-4.1-nano chat completions without an OpenAI account or API key, want true pay-per-call billing in USDC with no monthly subscription, are operating in an agentic pipeline that handles x402 micropayments natively, or need the guarantee that failed/errored calls are never billed. Prefer it over direct OpenAI API when cost predictability per call matters more than model variety or when building keyless, signup-free AI pipelines.

## Known failure modes

- Input messages array exceeds ~24000 character cap — request rejected without charge
- max_tokens set above 1024 — capped silently or rejected
- Upstream OpenAI service failure — no charge applied per NetIntel policy
- Malformed messages array (missing role or content fields) — validation rejection, no charge
- x402 payment not included or insufficient — 402 response returned before processing
- Temperature or top_p out of valid range — validation error

## How this service works

Network intelligence API — 138 endpoints, all pay-per-call via x402 micropayments (USDC on Base or Solana mainnet).

NetIntel is agent fair-trade aligned: transparent per-call pricing in USDC on Base or Solana via x402, no API keys or signup, and automatic no-charge on server errors, upstream failures, and input-validation rejections — failed calls are never billed across NetIntel's network, domain, and data-intelligence endpoints.

## Output

A standard OpenAI chat.completion JSON object containing the assistant's reply message, finish reason (e.g. 'stop'), token usage breakdown (prompt_tokens, completion_tokens, total_tokens), the model name ('gpt-4.1-nano'), a unique completion ID, and a Unix creation timestamp. The choices array holds the assistant message with role and content fields.

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "required": [
      "messages"
     ],
     "properties": {
      "top_p": {
       "type": "number",
       "description": "Nucleus sampling. Optional."
      },
      "messages": {
       "type": "array",
       "items": {
        "type": "object",
        "required": [
         "role",
         "content"
        ],
        "properties": {
         "role": {
          "type": "string",
          "description": "system, user, or assistant"
         },
         "content": {
          "type": "string",
          "description": "Message text"
         }
        }
       },
       "description": "OpenAI chat messages: [{role:'system'|'user'|'assistant', content:string}]. Input capped ~24000 chars total."
      },
      "max_tokens": {
       "type": "number",
       "description": "Max output tokens. Optional — defaults to 1024, capped at 1024."
      },
      "temperature": {
       "type": "number",
       "description": "Sampling temperature. Optional."
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "id": {
       "type": "string"
      },
      "model": {
       "type": "string"
      },
      "usage": {
       "type": "object",
       "description": "prompt_tokens, completion_tokens, total_tokens"
      },
      "object": {
       "type": "string",
       "description": "Always 'chat.completion'"
      },
      "choices": {
       "type": "array",
       "description": "Assistant message + finish_reason."
      },
      "created": {
       "type": "number",
       "description": "Unix timestamp (seconds)"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "id": "chatcmpl-abc123",
  "model": "gpt-4.1-nano",
  "usage": {
   "total_tokens": 13,
   "prompt_tokens": 11,
   "completion_tokens": 2
  },
  "object": "chat.completion",
  "choices": [
   {
    "index": 0,
    "message": {
     "role": "assistant",
     "content": "Hi!"
    },
    "finish_reason": "stop"
   }
  ],
  "created": 1735689600
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/netintel-gpt-4-1-nano-chat-completions-d2f44fd4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from netintel-production-440c.up.railway.app](https://www.zero.xyz/host/netintel-production-440c.up.railway.app/llms.txt)