# DeFi Protocol TVL & Info Lookup

> DeFi Protocol TVL & Info Lookup is a paid API for AI agents from api.x-402.online, paid per call via x402, $0.005/call, status down (last checked 2026-09-15).

Returns total TVL, per-chain TVL breakdown, category, supported chains, and market cap for a DeFi protocol by its slug identifier

## Facts

- Endpoint: POST https://api.x-402.online/v1/defi/protocol
- Price: $0.005/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/defi-protocol-tvl-info-lookup-d7de4fd4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_13gYhCML18Bf3qIYLpeVI

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-protocol-tvl-info-lookup-d7de4fd4 -d '<json body>'
```

Example prompt: What's the current total TVL, per-chain TVL breakdown, category, and market cap for Aave right now?

## When to prefer this

Use this endpoint when you need structured TVL and metadata for a specific known DeFi protocol by slug, especially when you need per-chain TVL breakdown alongside category and market cap in a single call. Prefer this over general crypto market endpoints when the query is specifically about protocol-level DeFi metrics rather than token prices or yield opportunities.

## Known failure modes

- Unknown or misspelled protocol slug returns an error or empty result
- Protocol slug format mismatch (e.g. using display name instead of slug)
- Data may be slightly delayed if the upstream TVL provider hasn't refreshed recently
- Network or payment failure results in HTTP 402 or 5xx response

## Output

Returns a JSON object containing the protocol's total TVL (in USD), a breakdown of TVL per supported chain, the protocol's DeFi category (e.g. lending, DEX, liquid staking), the list of chains it operates on, and its market capitalization.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/defi-protocol-tvl-info-lookup-d7de4fd4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.x-402.online](https://www.zero.xyz/host/api.x-402.online/llms.txt)