# Strale Protocol Fees Lookup

> Strale Protocol Fees Lookup is a paid API for AI agents from api.strale.io, paid per call via x402, $0.0216/call, status unknown (last checked 2026-09-14).

Retrieves current protocol fee data for a specified DeFi protocol by name or DeFi Llama slug

## Facts

- Endpoint: GET https://api.strale.io/x402/v2/protocol-fees-lookup
- Price: $0.0216/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/strale-protocol-fees-lookup-4fe3786f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_gja2bTNaIs1Q2SpqW7sFI

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 strale-protocol-fees-lookup-4fe3786f
```

Example prompt: What are the current protocol fees for Aave V3? Look it up using the DeFi Llama slug 'aave-v3'.

## When to prefer this

Use this endpoint when you need verified, auditable protocol fee data for a specific DeFi protocol and need a cryptographic audit trail for the result. Prefer this over raw DeFi Llama queries when audit accountability or agent-to-agent trust verification is required.

## Known failure modes

- Unknown or misspelled protocol slug returns an error or empty result
- Protocol not indexed by DeFi Llama returns no data
- Network timeout or upstream DeFi Llama API unavailability
- Invalid HTTP method supplied (only GET/HEAD/DELETE accepted)
- Missing required 'protocol' query parameter causes validation error

## How this service works

The trust layer for AI agents — 250+ independently tested data capabilities across 27 countries. Execute capabilities via REST, MCP, A2A, or x402 micropayments. Every call returns an audit record with cryptographic chain hashing.

## Output

Returns structured JSON containing the protocol fee data for the requested DeFi protocol (e.g. swap fees, performance fees, management fees), along with an audit record including a cryptographic chain hash for verifiability.

## Request schema (JSON Schema)

```json
{
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "type": "object",
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "type": "string",
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ]
    },
    "queryParams": {
     "type": "object",
     "required": [
      "protocol"
     ],
     "properties": {
      "protocol": {
       "type": "string",
       "description": "Protocol name or DeFi Llama slug (e.g., 'aave-v3', 'uniswap')"
      }
     }
    }
   },
   "required": [
    "type",
    "method"
   ],
   "additionalProperties": false
  }
 },
 "required": [
  "input"
 ]
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/strale-protocol-fees-lookup-4fe3786f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.strale.io](https://www.zero.xyz/host/api.strale.io/llms.txt)