# Basescan Deployer History

> Basescan Deployer History is a paid API for AI agents from origin-mcp.fly.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).

Returns all smart contracts deployed by a specific Ethereum/Base address, enabling forensic tracing of deployer activity.

## Facts

- Endpoint: GET https://origin-mcp.fly.dev/mcp/tools/basescan_deployer_history
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/origin-mcp-fly-dev-9ec82abe
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Uk_7o07L2KWTqa0ePaHxg

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 origin-mcp-fly-dev-9ec82abe
```

Example prompt: Show me all the smart contracts that were deployed by 0x1234567890abcdef1234567890abcdef12345678 — I want to trace their full deployment history on Base.

## When to prefer this

Use this endpoint when you need to enumerate all smart contracts ever deployed by a specific wallet address on the Base network for forensic, auditing, or research purposes. Prefer this over contract detail lookups when you want a comprehensive deployment footprint rather than information about a single known contract.

## Known failure modes

- Invalid or malformed Ethereum address returns an error
- Address has no deployment history — returns empty contracts array with totalContracts: 0
- Basescan API rate limits or downtime cause request failure
- Non-checksummed address may cause parsing issues
- Network errors from fly.dev host

## How this service works

Get all contracts deployed by a specific address. Forensic tool for tracing deployers.

## Output

Returns the deployer address, a list of all contract addresses they have deployed, and the total count of contracts deployed. Empty list if no contracts found.

## Example request

```json
{
 "deployer": "0x1234567890abcdef1234567890abcdef12345678"
}
```

## Request schema (JSON Schema)

```json
{
 "properties": {
  "input": {
   "required": [
    "method"
   ],
   "properties": {
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/origin-mcp-fly-dev-9ec82abe/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from origin-mcp.fly.dev](https://www.zero.xyz/host/origin-mcp.fly.dev/llms.txt)