# SperaxOS DeFi Top Protocols Lookup

> SperaxOS DeFi Top Protocols Lookup is a paid API for AI agents from chat.sperax.io, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-12).

Returns the top DeFi protocols by TVL, optionally filtered by blockchain, via a pay-per-request x402 API

## Facts

- Endpoint: POST https://chat.sperax.io/api/x402/tools/defillama/getTopProtocols?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/speraxos-defi-top-protocols-lookup-d598b694
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6mQtatpWoagKd-94iNLZW

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 speraxos-defi-top-protocols-lookup-d598b694 -d '<json body>'
```

Example prompt: What are the top 10 DeFi protocols by TVL on Ethereum right now?

## When to prefer this

Use this endpoint when you need current, ranked DeFi protocol data filtered by specific blockchain without managing an API key — ideal for agents that need lightweight pay-per-call access to DeFiLlama TVL rankings without a subscription.

## Known failure modes

- Invalid chain name returns empty or error response
- Limit parameter out of acceptable range may be clamped or rejected
- Payment failure via x402 (insufficient USDC balance) results in 402 response
- Upstream DeFiLlama data unavailable causes service error
- Network timeout if DeFiLlama API is slow

## How this service works

AI-powered DeFi intelligence APIs payable via the x402 HTTP payment protocol. No API key required — pay per request with USDC on Base. Identity-only (SIWX) endpoints are free for wallets with an agentcash identity.

## Output

A ranked list of top DeFi protocols with their TVL figures, chain associations, and protocol metadata sourced from DeFiLlama, filtered by the specified blockchain and limited to the requested number of results.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "chain": {
   "type": "string",
   "description": "Filter by blockchain (e.g. \"Ethereum\", \"Solana\", \"Arbitrum\")."
  },
  "limit": {
   "type": "number",
   "description": "Maximum number of protocols to return (default: 10)."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/speraxos-defi-top-protocols-lookup-d598b694/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from chat.sperax.io](https://www.zero.xyz/host/chat.sperax.io/llms.txt)