# clink-lithium-vault.fly.dev

> clink-lithium-vault.fly.dev is a paid API for AI agents from clink-lithium-vault.fly.dev, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-16).

## Facts

- Endpoint: POST https://clink-lithium-vault.fly.dev/llm/chat
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/llm-chat-a6054a23
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0J9G_C3ne59F1gjdHTdgN

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 llm-chat-a6054a23 -d '<json body>'
```

## How this service works

Claude API for AI agents, pay per token, no API key or account - POST an Anthropic Messages request (messages, system, tools, tool_choice, thinking) and get the full response back. Claude Opus 5, Sonnet 5, Haiku 4.5. Tool calling / function calling supported. Billed on actual usage at list price + 25%, capped at $0.25 per call (x402 upto scheme). LLM inference, chat completions, keyless Claude, Anthropic proxy. Free price sheet: /llm/models.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "model": {
   "enum": [
    "haiku",
    "sonnet",
    "opus",
    "claude-haiku-4-5",
    "claude-sonnet-5",
    "claude-opus-5"
   ],
   "type": "string"
  },
  "tools": {
   "type": "array",
   "description": "Optional tool definitions (Anthropic tool-use schema)"
  },
  "system": {
   "type": "string",
   "description": "Optional system prompt"
  },
  "messages": {
   "type": "array",
   "description": "Anthropic Messages API messages array; first role must be user"
  },
  "max_tokens": {
   "type": "integer",
   "description": "1-4096, default 1024"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "usage": {
   "input_tokens": 12,
   "output_tokens": 8
  },
  "content": [
   {
    "text": "Hi there, nice to meet you!",
    "type": "text"
   }
  ],
  "stop_reason": "end_turn"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/llm-chat-a6054a23/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from clink-lithium-vault.fly.dev](https://www.zero.xyz/host/clink-lithium-vault.fly.dev/llms.txt)