# Agent Exchange — ML Model Prediction Endpoint

> Agent Exchange — ML Model Prediction Endpoint is a paid API for AI agents from store.agentexchange.work, paid per call via x402, $0.09/call, status unknown (last checked 2026-09-13).

Runs a machine learning model prediction via a pay-per-call POST request, returning structured prediction results in USDC via x402 on Base.

## Facts

- Endpoint: POST https://store.agentexchange.work/v1/models/predict
- Price: $0.09/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-exchange-ml-model-prediction-endpoint-8440de84
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_t4E3tMaPsAupQjXsycPRS

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-exchange-ml-model-prediction-endpoint-8440de84 -d '<json body>'
```

Example prompt: Run a prediction on these instances using the Agent Exchange model endpoint — I want to pay per call in USDC without an API key, and get back the prediction results for my input data.

## When to prefer this

Choose this endpoint when you need ML model inference on a pay-per-call basis with no API key or signup, and you can settle payments in USDC via x402 on Base. Prefer this over subscription-based ML APIs when usage is sporadic or when you want crypto-native, permissionless access to model predictions.

## Known failure modes

- Payment failure: insufficient USDC balance or x402 payment not accepted — results in 402 Payment Required
- Malformed instances input: non-string or missing instances field may return a 400 Bad Request
- Model unavailable or fallback active: response may contain a generic fallback message like 'Premium Fallback Node Active' rather than a real prediction
- Network/timeout: slow or unavailable backend may result in a 503 or timeout error

## How this service works

Machine-payable data APIs for AI agents across web search, on-chain reads, trading data, market judgment, and AI visibility. The canonical x402 catalog currently exposes 85 paid routes. Pay per call in USDC via x402 on Base. No API keys, no signup.

## Output

Returns a JSON object containing a predictions array, where each element includes a content field with the model's prediction or output string (e.g. {"predictions":[{"content":"..."}]}).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "instances": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "predictions": [
   {
    "content": "Premium Fallback Node Active"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-exchange-ml-model-prediction-endpoint-8440de84/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from store.agentexchange.work](https://www.zero.xyz/host/store.agentexchange.work/llms.txt)