# Zerion List Supported Chains

> Zerion List Supported Chains is a paid API for AI agents from api.zerion.io, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-23).

Returns a list of all blockchain networks supported by the Zerion DeFi data platform

## Facts

- Endpoint: GET https://api.zerion.io/v1/chains/?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/zerion-7bb5dfe6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Ve7pjt1U-v3w_5_ql2j98

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 zerion-7bb5dfe6
```

Example prompt: What blockchain networks does Zerion support? I want to know all the chains I can query for DeFi and token data.

## When to prefer this

Use this endpoint when you need to discover which blockchain networks are available before making further calls to Zerion's token, NFT, or DeFi protocol endpoints — it serves as a prerequisite lookup to validate chain support and retrieve canonical chain identifiers.

## Known failure modes

- 401 Unauthorized if API key is missing or invalid
- 402 Payment Required if x402 payment is not included or insufficient
- 429 Too Many Requests if rate limit is exceeded
- 503 Service Unavailable if Zerion API is down

## How this service works

List supported chains

## Output

A list of blockchain networks supported by Zerion, including chain identifiers, names, and associated metadata such as chain IDs and network details useful for querying DeFi protocols, tokens, and NFTs on those chains.

## 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"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "data"
     ],
     "properties": {
      "data": {
       "type": "array",
       "items": {
        "type": "object",
        "properties": {
         "id": {
          "type": "string",
          "description": "Resource ID."
         },
         "type": {
          "type": "string",
          "description": "Resource type."
         },
         "attributes": {
          "type": "object",
          "description": "Resource attributes; see https://developers.zerion.io"
         }
        }
       },
       "description": "Array of JSON:API resource objects."
      },
      "links": {
       "type": "object",
       "description": "Self and pagination links."
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": [
   {
    "id": "<resource id>",
    "type": "<resource type>",
    "attributes": {}
   }
  ],
  "links": {
   "self": "https://api.zerion.io/v1/..."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/zerion-7bb5dfe6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.zerion.io](https://www.zero.xyz/host/api.zerion.io/llms.txt)