# md.fastdb.in DeFi Protocol TVL Lookup

> md.fastdb.in DeFi Protocol TVL Lookup is a paid API for AI agents from md.fastdb.in, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Returns the current Total Value Locked (TVL) in USD for a specified DeFi protocol, identified by its DefiLlama slug.

## Facts

- Endpoint: POST https://md.fastdb.in/pulse/tvl
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/md-fastdb-in-defi-protocol-tvl-lookup-8ee3fe30
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_71T-8vUdVZzjAuu5HdVmE

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 md-fastdb-in-defi-protocol-tvl-lookup-8ee3fe30 -d '<json body>'
```

Example prompt: What's the current TVL in USD for Uniswap — look it up by its DefiLlama slug 'uniswap'?

## When to prefer this

Use this endpoint when you need a fast, lightweight, single-protocol TVL lookup by DefiLlama slug. Prefer this over scraping DefiLlama directly or using broader DeFi analytics APIs when you need just TVL for one protocol in USD. Ideal for agents monitoring DeFi protocol health, comparing protocol sizes, or enriching financial analysis with on-chain TVL data.

## Known failure modes

- Invalid or unknown DefiLlama slug returns an error or empty result
- Protocol not tracked by DefiLlama returns a not-found error
- Network or upstream DefiLlama API unavailability causes a timeout or 5xx response
- Malformed POST body causes a 400 bad request response

## How this service works

Current DeFi protocol TVL in USD by DefiLlama slug.

## Output

Returns the current Total Value Locked (TVL) in USD for the specified DeFi protocol as identified by its DefiLlama slug. The result is a numeric USD value representing the aggregate value of assets deposited in that protocol at the time of the call.

## 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": {
     "properties": {}
    },
    "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": {
  "at": "2026-07-17T15:00:00.000Z",
  "tvl": {
   "aave": {
    "usd": 24500000000
   },
   "uniswap": {
    "usd": 3067634352.49
   }
  },
  "source": "defillama"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/md-fastdb-in-defi-protocol-tvl-lookup-8ee3fe30/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from md.fastdb.in](https://www.zero.xyz/host/md.fastdb.in/llms.txt)