# x402stock.xyz US Equity Exchanges Reference

> x402stock.xyz US Equity Exchanges Reference is a paid API for AI agents from x402stock.xyz, paid per call via x402, $0.01/call, status healthy (last checked 2026-09-14, last successful call 2026-09-01).

Returns a reference list of all US equity exchanges and market centers with their names, MIC codes, operating MICs, and SIP participant IDs.

## Facts

- Endpoint: GET https://x402stock.xyz/api/v1/exchanges
- Price: $0.01/call
- Payment: x402
- Status: healthy
- Last checked: 2026-09-14
- Last successful call: 2026-09-01
- Success rate: 100% of calls made through Zero
- Activations on Zero: 1
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402stock-xyz-56735e4a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_PO5T45j1gNHZQnEu3-2ji

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 x402stock-xyz-56735e4a
```

Example prompt: Can you give me a full reference list of all US equity exchanges and market centers, including their MIC codes, operating MICs, and SIP participant IDs?

## When to prefer this

Use this endpoint when you need a canonical, up-to-date reference of all US equity exchanges and their standardized identifiers (MIC, operating MIC, SIP participant ID). Prefer this over manual lookups or static tables when building applications that need to decode exchange codes on trade/quote data or validate exchange identifiers.

## Known failure modes

- Payment failure (402): USDC payment of $0.01 not processed correctly
- Service unavailable (503): upstream data provider temporarily unreachable
- Malformed response if data source is stale or misconfigured

## How this service works

Reference list of US equity exchanges and market centers with names, MICs, operating MICs, and SIP participant IDs. From x402stock, a pay-per-call market & economic data API for AI agents. No API key or account; pay in USDC via x402.

## Output

An array of exchange objects each containing: numeric ID, exchange type, full name, acronym, MIC code, operating MIC, SIP participant ID, and URL. Also includes a source identifier ('massive'), a count of exchanges, and an as-of timestamp.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {}
 }
}
```

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "as_of": "2026-05-29T20:00:00.000Z",
  "count": 1,
  "source": "x402stock",
  "exchanges": [
   {
    "id": 1,
    "mic": "XASE",
    "url": "https://www.nyse.com/markets/nyse-american",
    "name": "NYSE American, LLC",
    "type": "exchange",
    "acronym": "AMEX",
    "operating_mic": "XNYS",
    "participant_id": "A"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402stock-xyz-56735e4a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402stock.xyz](https://www.zero.xyz/host/x402stock.xyz/llms.txt)