# Vextorium Chain Top DeFi Protocols

> Vextorium Chain Top DeFi Protocols is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-28).

Returns a ranked list of DeFi protocols by TVL on a specific blockchain, with category, 7-day change, and chain TVL share.

## Facts

- Endpoint: POST https://api.vextorium.com/v1/chain-top-protocols?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-28
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-chain-top-defi-protocols-f9d2868a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zMhjcs8odse5S5bjl0uRA

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 vextorium-chain-top-defi-protocols-f9d2868a -d '<json body>'
```

Example prompt: What are the top DeFi protocols by TVL on Base right now? Show me up to 10, and filter to lending protocols only.

## When to prefer this

Use this endpoint when you need a ranked, per-chain breakdown of DeFi protocols by TVL, especially with category filtering (e.g. lending, DEX) and 7-day trend data. Prefer it over global TVL rankings when the user's question is chain-specific. It's ideal for competitive landscape analysis, chain health monitoring, or identifying dominant protocols on a given network.

## Known failure modes

- Unsupported or misspelled chain name returns empty or error response
- Invalid category filter returns no results
- Limit parameter ignored or capped at server max
- Stale data if DefiLlama upstream is delayed
- Network timeout for chains with large protocol counts

## How this service works

558 pay-per-call data APIs for AI agents: Solana and EVM on-chain data, tokenized stocks, DeFi, Hyperliquid, economy and official statistics, FX, validation, web and developer tools. Pay in USDC via x402.

## Output

A JSON object containing the chain name, data source (DefiLlama), total TVL sum in USD, total protocol count, and a ranked array of protocols — each with name, category, on-chain TVL in USD, percentage share of chain TVL, and 7-day TVL change percentage.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "chain": {
   "type": "string"
  },
  "limit": {
   "type": "integer"
  },
  "category": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "chain": "Base",
  "source": "DefiLlama",
  "ranking": [
   {
    "category": "Lending",
    "protocol": "Morpho Blue",
    "share_pct": 58.72,
    "change_7d_pct": 3.66,
    "on_chain_tvl_usd": 4547530752
   },
   {
    "category": "Lending",
    "protocol": "Aave V3",
    "share_pct": 7.29,
    "change_7d_pct": 0.14,
    "on_chain_tvl_usd": 564636173
   }
  ],
  "protocols": 702,
  "sum_tvl_usd": 7743956980
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-chain-top-defi-protocols-f9d2868a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.vextorium.com](https://www.zero.xyz/host/api.vextorium.com/llms.txt)