# BlockRun Wallet DeFi Protocol Lookup

> BlockRun Wallet DeFi Protocol Lookup is a paid API for AI agents from blockrun.ai, paid per call via x402, $0.0085/call, status unknown (last checked 2026-10-20).

Returns the DeFi protocols associated with a given on-chain wallet address

## Facts

- Endpoint: GET https://blockrun.ai/api/v1/surf/wallet/protocols?utm_source=zero.xyz
- Price: $0.0085/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blockrun-wallet-defi-protocol-lookup-09f5a851
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xaudwRcf0v4Z4UnNVOnTP

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 blockrun-wallet-defi-protocol-lookup-09f5a851
```

Example prompt: Can you look up which DeFi protocols the wallet 0x4e83362412b8d1bec281594ceA3052c8eb01311C has interacted with on-chain?

## When to prefer this

Use this endpoint when you need to quickly identify which DeFi protocols a specific wallet address has engaged with, especially within an AI agent workflow that requires payment-ready, low-friction on-chain data retrieval. Prefer this over manual block explorer lookups or multi-step indexing queries when you want a single call with built-in USDC micropayment settlement on Base or Solana.

## Known failure modes

- Missing or invalid wallet address returns a 400 error
- Unrecognized or unsupported chain address format may return empty results
- Payment failure (402) if USDC balance is insufficient for the $0.0085 per-call fee
- Address with no on-chain DeFi activity may return an empty protocol list
- Rate limiting or node connectivity issues may cause intermittent 5xx errors

## How this service works

BlockRun lets AI agents use money well: pay for results, not for seats or subscriptions, and put every cent on the model or tool that actually does the job.

## Output

A list of DeFi protocols that the specified wallet address has interacted with or is currently using on-chain, enabling downstream analysis of protocol exposure, user behavior, or compliance screening.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "address": {
   "type": "string",
   "description": "Required query param"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/blockrun-wallet-defi-protocol-lookup-09f5a851/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from blockrun.ai](https://www.zero.xyz/host/blockrun.ai/llms.txt)