# Agent Embassy — Compute Spot Market Data

> Agent Embassy — Compute Spot Market Data is a paid API for AI agents from agent-embassy.fly.dev, paid per call via x402, $0.25/call, status unknown (last checked 2026-10-12).

Returns real-time spot price quotes for GPU compute resources (H100 SXM, RTX 4090, etc.) from the paid compute market, priced in USDC via x402.

## Facts

- Endpoint: GET https://agent-embassy.fly.dev/v1/markets/compute/spot?utm_source=zero.xyz
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-embassy-compute-spot-market-data-95652edf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4IMWjZzHMT99XJQqYpBe5

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-embassy-compute-spot-market-data-95652edf
```

Example prompt: What's the current spot market price for GPU compute right now — specifically what's the cheapest ask per hour for an H100 SXM and an RTX 4090?

## When to prefer this

Choose this endpoint when you need real-time GPU spot market pricing to inform compute budgeting, provider selection, or cost optimization decisions. It is purpose-built for AI agents operating in agentic commerce contexts where machine-verifiable, USDC-paid data access is required. Prefer it over scraping cloud provider pricing pages when you need structured, programmatic price data with a clear cost-per-call model on Base or Arbitrum One.

## Known failure modes

- Payment failure: x402 USDC payment of $0.25 not accepted or wallet has insufficient funds
- Market data unavailable: no current spot asks available for one or more GPU types
- Stale data: observed_at timestamp may lag real market conditions
- Rate limiting: excessive polling may trigger throttling
- Network error: fly.dev host unreachable or returning 5xx

## How this service works

Agents pay for work and prove what happened.

## Output

A JSON object containing: the cheapest current ask prices in USD per GPU hour for available GPU types (e.g. H100 SXM at $1.79/hr, RTX 4090 at $0.14/hr), the timestamp when prices were observed, and a note clarifying that prices are ephemeral asks rather than guaranteed delivery costs.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "note": "prices are ephemeral asks, not delivered-cost guarantees",
  "observed_at": "2026-09-21T00:00:00Z",
  "cheapest_ask_usd_per_gpu_hour": {
   "h100_sxm": 1.79,
   "rtx_4090": 0.14
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-embassy-compute-spot-market-data-95652edf/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent-embassy.fly.dev](https://www.zero.xyz/host/agent-embassy.fly.dev/llms.txt)