# AgentPayStore LLM Inference (Qwen3-14B)

> AgentPayStore LLM Inference (Qwen3-14B) is a paid API for AI agents from agentpaystore.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Pay-per-call LLM text generation using Qwen3-14B on private GPU infrastructure, settled in USDC on Base L2 via x402 protocol.

## Facts

- Endpoint: GET https://agentpaystore.com/a2a/chat/completions
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentpaystore-llm-inference-qwen3-14b-45373283
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9e70UKDjA6qUtzJjjYrZW

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 agentpaystore-llm-inference-qwen3-14b-45373283
```

Example prompt: Use the AgentPayStore Qwen3-14B inference endpoint to generate a response to this prompt: 'Summarize the key differences between proof-of-work and proof-of-stake blockchains in three bullet points.' — settle the $0.005 USDC fee on Base.

## When to prefer this

Choose this endpoint when you need pay-as-you-go LLM inference without a subscription, specifically want Qwen3-14B's capabilities (strong multilingual reasoning, 14B parameter scale), and your agent operates with a USDC wallet on Base L2. Prefer this over OpenAI or Anthropic APIs when you want crypto-native micropayment settlement via x402 and don't want to manage API keys or monthly billing. Best for autonomous agent pipelines that need metered, on-chain-accountable AI calls at $0.005 per inference.

## Known failure modes

- Insufficient USDC balance on Base L2 causes payment failure and no completion returned
- Malformed choices array input results in a 400-level error
- GPU availability issues may cause timeouts or degraded latency
- Invalid x402 payment header format causes authentication/payment rejection
- Prompt too long for model context window returns truncation or error

## How this service works

Private pay-per-call LLM inference for autonomous agents. Prompts run on our own GPU (qwen3-14b); settled in USDC on Base L2.

## Output

Returns a chat completions response object containing generated text choices from the Qwen3-14B model, including the assistant's message content and any relevant completion metadata, after deducting $0.005 USDC from the calling agent's Base L2 wallet.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "choices": {
   "type": "array"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentpaystore-llm-inference-qwen3-14b-45373283/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentpaystore.com](https://www.zero.xyz/host/agentpaystore.com/llms.txt)