# DeFi Market Overview (TVL & Chain Stats)

> DeFi Market Overview (TVL & Chain Stats) is a paid API for AI agents from crypto.openverbs.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).

Returns the total value locked (USD) across all DeFi chains, the number of chains, and the top chains ranked by TVL with each chain's dominance percentage.

## Facts

- Endpoint: POST https://crypto.openverbs.com/v1/defi-overview
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/defi-market-overview-tvl-chain-stats-7b801b9f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zfp1_ukebLMStXj6ZUz5m

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 defi-market-overview-tvl-chain-stats-7b801b9f -d '<json body>'
```

Example prompt: Give me a DeFi market overview — the total value locked across all chains, how many chains are active, and rank the top 15 chains by TVL with their dominance percentages.

## When to prefer this

Use this endpoint when you need a high-level DeFi market snapshot — aggregate TVL, chain count, and cross-chain TVL distribution — rather than protocol-level or pool-level data. Prefer this over the per-protocol TVL endpoint when the user wants a macro view of the entire DeFi ecosystem rather than a single chain or protocol deep-dive.

## Known failure modes

- Invalid topChains value (outside 1–50 range) returns a validation error
- Upstream data source unavailability may return a 503 or stale data
- Payment failure (x402) if USDC balance is insufficient
- Malformed request body returns a 400 error

## How this service works

DeFi market overview: total value locked (USD) across all chains, the chain count, and the top chains by TVL with each chain's TVL dominance. This is DeFi TVL — not total crypto market cap.

## Output

Returns the aggregate DeFi total value locked in USD, the total count of chains with DeFi protocols, and an ordered list of the top N chains (default 10, configurable up to 50) each showing their name, TVL in USD, and TVL dominance as a percentage of the global total.

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "required": [],
     "properties": {
      "topChains": {
       "type": "integer",
       "maximum": 50,
       "minimum": 1,
       "description": "How many chains to include in `topChains`, ranked by TVL (default 10)."
      }
     },
     "additionalProperties": false
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "stale": false,
  "source": "defillama",
  "topChains": [
   {
    "name": "Ethereum",
    "tvlUsd": 49428247708.18,
    "dominancePct": 56.12
   }
  ],
  "chainCount": 362,
  "totalTvlUsd": 88079174321.95
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/defi-market-overview-tvl-chain-stats-7b801b9f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from crypto.openverbs.com](https://www.zero.xyz/host/crypto.openverbs.com/llms.txt)