# Zerion DeFi Protocol Lister

> Zerion DeFi Protocol Lister 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).

Lists DeFi protocols (dApps) available on Zerion, optionally filtered by protocol type such as lending

## Facts

- Endpoint: GET https://api.zerion.io/v1/dapps/?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-fae84cbe
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YpAro5RAzLfqG5xhZRZhP

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-fae84cbe
```

Example prompt: Show me all the lending protocols available on Zerion so I can see what DeFi dApps support that protocol type.

## When to prefer this

Use this endpoint when you need to discover or enumerate DeFi protocols/dApps indexed by Zerion, especially when filtering by protocol type (lending, DEX, yield, etc.). Prefer this over token or NFT endpoints when the user wants protocol-level information rather than asset-level data.

## Known failure modes

- Invalid protocol_type filter value returns empty or error response
- Rate limiting or payment failure (402) if x402 payment not handled
- Large response payload may be truncated
- Unsupported filter parameters silently ignored

## How this service works

List DeFi protocols

## Output

A list of DeFi protocols (dApps) with metadata such as protocol names, types, and related information, filtered by the specified protocol type (e.g. lending). Response can be large (26KB+).

## Example request

```json
{
 "filter": {
  "protocol_type": "lending"
 }
}
```

## 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",
     "properties": {
      "page[size]": {
       "type": "string",
       "description": "Page size"
      },
      "page[after]": {
       "type": "string",
       "description": "Numeric offset to start after; take it from the previous page's links.next"
      }
     }
    }
   },
   "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-fae84cbe/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)