# WebberSites OpenAI-Compatible Chat Completions (Fast Tier)

> WebberSites OpenAI-Compatible Chat Completions (Fast Tier) is a paid API for AI agents from api.webbersites.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15, last successful call 2026-07-22).

OpenAI-compatible chat completions endpoint supporting multiple LLM models (Claude, Gemini, GPT), paid per call in USDC via x402 — no API keys required.

## Facts

- Endpoint: POST https://api.webbersites.com/v1/chat/completions
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Last successful call: 2026-07-22
- Success rate: 100% of calls made through Zero
- Rating: 4.7 / 5 from 1 review
- Activations on Zero: 2
- Tags: x402
- Canonical page: https://www.zero.xyz/c/webbersites-openai-compatible-chat-completions-fast-tier-653aa310
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qNJX7Vd9YdScNh5lDu-M1

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 webbersites-openai-compatible-chat-completions-fast-tier-653aa310 -d '<json body>'
```

Example prompt: Ask claude-haiku-4-5 to summarize the following text in 3 bullet points using the WebberSites fast-tier chat completions: 'Quantum computing leverages superposition and entanglement to process information exponentially faster than classical computers, potentially breaking current encryption standards.'

## When to prefer this

Choose this endpoint when an AI agent needs LLM inference without holding provider API keys and wants to pay per call in USDC via x402. Ideal for lightweight, fast-tier tasks with Claude Haiku 4.5, Gemini 2.5 Flash/Flash-Lite, GPT-5 Mini, or GPT-5 Nano where output is under 1,024 tokens and input under 16,000 characters. Prefer the PRO tier sibling for larger outputs or frontier models. Prefer the Anthropic-compatible sibling if you need the native Anthropic /v1/messages dialect.

## Known failure modes

- Payment not included or insufficient USDC — 402 Payment Required returned
- Input exceeds 16,000 character limit — request rejected
- Requested model name not recognized — error response
- max_tokens clamped silently to 1,024 if exceeded
- Streaming requested but not supported — unsupported feature error
- Non-text (image, audio) content in messages — rejected as text-only endpoint

## How this service works

OPENAI-COMPATIBLE chat completions, fast tier — point any OpenAI SDK at base_url https://api.webbersites.com/v1 and pay per call in USDC instead of holding provider API keys. Models: claude-haiku-4-5 (default), gemini-2.5-flash, gemini-2.5-flash-lite, gpt-5-mini, gpt-5-nano. Caps: 16,000 input chars, 1,024 output tokens, text-only, no streaming. One flat price per call; the x402 payment IS the auth.

## Output

An OpenAI-format chat completion response containing the assistant's generated text reply, subject to a 1,024 output token cap and text-only content. The response mirrors the standard OpenAI /v1/chat/completions response shape, including the message 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": {
     "required": [
      "messages"
     ],
     "properties": {
      "model": {
       "type": "string",
       "description": "claude-haiku-4-5 (default), gemini-2.5-flash, gemini-2.5-flash-lite, gpt-5-mini, gpt-5-nano"
      },
      "messages": {
       "type": "array",
       "description": "OpenAI-style messages: [{role, content}], text content only, 16,000 chars total"
      },
      "max_tokens": {
       "type": "number",
       "description": "output cap, clamped to 1,024"
      }
     }
    },
    "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": {
      "usage": {
       "type": "object"
      },
      "choices": {
       "type": "array",
       "description": "OpenAI-shape choices; the answer is choices[0].message.content"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "id": "chatcmpl-...",
  "model": "claude-haiku-4-5",
  "usage": {
   "prompt_tokens": 28,
   "completion_tokens": 3
  },
  "object": "chat.completion",
  "choices": [
   {
    "message": {
     "role": "assistant",
     "content": "billing"
    },
    "finish_reason": "stop"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/webbersites-openai-compatible-chat-completions-fast-tier-653aa310/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.webbersites.com](https://www.zero.xyz/host/api.webbersites.com/llms.txt)