# Delx EVM Address List Dedupe

> Delx EVM Address List Dedupe is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).

Deduplicates a list of EVM blockchain addresses, returning unique addresses and a count of removed duplicates.

## Facts

- Endpoint: POST https://api.delx.ai/api/v1/x402/evm-address-list-dedupe
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/delx-evm-address-list-dedupe-3b218f32
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_sdI2W7oRS6re3vF1FZXIo

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 delx-evm-address-list-dedupe-3b218f32 -d '<json body>'
```

Example prompt: I have a list of EVM wallet addresses that might contain duplicates — can you deduplicate them for me and tell me how many were removed? Here are the addresses: ['0xABC...', '0xDEF...', '0xABC...'].

## When to prefer this

Choose this endpoint when you need a fast, cheap, privacy-preserving deduplication of EVM addresses before batch operations, airdrops, allowlist checks, or on-chain calls. It processes entirely in memory with no data retention, making it suitable for sensitive wallet data. Prefer it over general-purpose deduplication tools when working in a Web3/EVM context and you want the audit evidence (SHA-256 hash, zero external calls) for compliance or logging.

## Known failure modes

- Array exceeds 256 items — request will be rejected
- Individual address strings exceed 8192 characters — item rejected
- Malformed JSON body — 400 error
- Empty array input — returns empty result with zero removed count
- Non-EVM strings in array — may pass through without validation

## How this service works

EVM Address List Dedupe: EVM Address List Dedupe deduplicates EVM address strings case-insensitively while preserving order from bounded caller-supplied values without an external provider. Call EVM Address List Dedupe before signing, submitting, replacing, or accepting an EVM/Base transaction assembled from caller-owned data. Returns normalized transaction evidence, calculated budget or shape findings, and a fail-closed preflight status for EVM Address List Dedupe as versioned deterministic JS…

## Output

Returns a JSON object containing a deduplicated array of EVM addresses, the count of removed duplicates, the operation schema identifier, a pass/fail status, and an evidence block including a SHA-256 hash of the input and confirmation that no data was retained and no external calls were made.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "addresses": {
   "type": "array",
   "items": {
    "type": "string",
    "maxLength": 8192
   },
   "maxItems": 256,
   "description": "Addresses supplied to EVM Address List Dedupe; used only for this bounded calculation and processed in memory without retention."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {
   "addresses": [
    "0x1111111111111111111111111111111111111111"
   ],
   "removed_count": 1
  },
  "schema": "delx/util-evm-address-list-dedupe/v1",
  "status": "pass",
  "evidence": {
   "retained": false,
   "input_sha256": "1770157abd7a92cac832973b5e22fa9713496fa7d4389c0fd02cd1ad292c7cf5",
   "external_calls": 0
  },
  "operation": "evm_preflight:evm_address_list_dedupe"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-evm-address-list-dedupe-3b218f32/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.delx.ai](https://www.zero.xyz/host/api.delx.ai/llms.txt)