# Base Contract Profile

> Base Contract Profile is a paid API for AI agents from appearing-clinics-show-wrote.trycloudflare.com, paid per call via x402, price unknown, status down (last checked 2026-09-15).

Validates deployed bytecode on Base and returns ERC-20/ERC-721/ERC-1155 interface metadata for a given contract address

## Facts

- Endpoint: GET https://appearing-clinics-show-wrote.trycloudflare.com/base-contract-profile-sample
- Price: price unknown
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/base-contract-profile-90fd8cdc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_lP76QbZLH2sFIyCxLldhP

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 base-contract-profile-90fd8cdc
```

Example prompt: Can you look up the contract profile for the USDC contract on Base — I want to know its name, symbol, decimals, and whether it follows any NFT interface standards like ERC-721 or ERC-1155?

## When to prefer this

Use this endpoint when you need to introspect a specific smart contract on the Base L2 network to determine its token standard, validate it is actually deployed, or retrieve its ERC-20 metadata (name, symbol, decimals). Prefer this over generic Ethereum endpoints when the contract is deployed on Base specifically, and over balance or transaction endpoints when your goal is contract-level metadata rather than account state.

## Known failure modes

- Contract address has no deployed bytecode (returns empty or error)
- Address is an externally owned account (EOA), not a contract
- Contract does not implement standard name/symbol/decimals view functions (returns nulls for those fields)
- Invalid or malformed contract address format
- Network timeout or RPC unavailability

## How this service works

Free live Base USDC contract profile. The paid $0.0044 API validates deployed bytecode and returns optional name, symbol, decimals, and ERC-721/ERC-1155 interface results.

## Output

Returns validated bytecode confirmation and optional contract metadata fields including name, symbol, decimals, and boolean results for ERC-721 and ERC-1155 interface support for the queried Base contract address.

## 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"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/base-contract-profile-90fd8cdc/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from appearing-clinics-show-wrote.trycloudflare.com](https://www.zero.xyz/host/appearing-clinics-show-wrote.trycloudflare.com/llms.txt)