# TickerLayer Crypto Symbol Catalog

> TickerLayer Crypto Symbol Catalog is a paid API for AI agents from x402.tickerlayer.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Returns the full catalog of cryptocurrency symbols available in the TickerLayer data service, each with symbol, name, and asset type.

## Facts

- Endpoint: GET https://x402.tickerlayer.com/v1/crypto/symbols
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tickerlayer-crypto-symbol-catalog-48c7040b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UMp-A1HeRgZnEkNn-8lNo

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 tickerlayer-crypto-symbol-catalog-48c7040b
```

Example prompt: Pull the full list of cryptocurrency symbols available on TickerLayer so I can see which crypto assets I can get market data for.

## When to prefer this

Use this endpoint when you need to enumerate all supported cryptocurrency symbols in TickerLayer before making targeted price or market-status queries, or when building a symbol picker for crypto assets. Prefer this over the stocks, ETF, forex, commodities, or indices sibling endpoints when your target asset class is specifically cryptocurrency.

## Known failure modes

- Payment failure (402): x402 micropayment of $0.02 USDC not completed or rejected
- Network timeout: catalog endpoint unreachable
- Empty catalog: unexpected empty data array if catalog is unavailable
- Rate limiting: excessive calls may result in throttling

## How this service works

Discover the current TickerLayer Crypto symbol catalog. Stock symbols are market-qualified in COUNTRY_OR_MARKET:SYMBOL form such as US:AAPL.

## Output

Returns a JSON object with a 'data' array of crypto asset objects, each containing a 'symbol' string (1–80 chars), a 'name' string, and a 'type' field set to 'crypto', plus a 'count' integer indicating the total number of symbols returned.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {},
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "data",
      "count"
     ],
     "properties": {
      "data": {
       "type": "array",
       "items": {
        "type": "object",
        "required": [
         "symbol",
         "name",
         "type"
        ],
        "properties": {
         "name": {
          "type": "string"
         },
         "type": {
          "type": "string",
          "const": "crypto"
         },
         "symbol": {
          "type": "string",
          "pattern": "^[A-Za-z0-9][A-Za-z0-9.:%-]*$",
          "maxLength": 80,
          "minLength": 1
         }
        },
        "additionalProperties": true
       },
       "minItems": 1
      },
      "count": {
       "type": "integer",
       "minimum": 1
      }
     },
     "additionalProperties": true
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tickerlayer-crypto-symbol-catalog-48c7040b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.tickerlayer.com](https://www.zero.xyz/host/x402.tickerlayer.com/llms.txt)