# Blacklisting

To protect LP, malicious arbitrage that puts Native liquidity at risk will be profiled, and the user/swapper address will be added to the blacklist.

To avoid producing additional errors during the /firm-quote stage, any quotes submitted with `from_address` or `beneficiary_address` being blacklisted will be subject to a 50bps added spread due to increased risk.

We recommend that all upstreams query and cache a copy of the latest blacklisted address and apply pre-processing and filtering.

#### /blacklist Endpoint

```
## Request
curl "https://v2.api.native.org/swap-api-v2/v1/blacklist?page_size=200&page_index=1" \
     -H "apiKey: $NATIVE_KEY"
```

Param:

* page\_size: entries per page, max 500
* page\_index: page index

Normal return:

```
{
  "black_list": [ // latest first
    {
      "id": "466221",
      "address": "0x000000000000000000000000000000000000dead", // address
      "chainId": 1,
      "createTime": 1775026096 // unix timestamp
    }
  ],
  "total_count": 44233 // total entires count
}
```

Upstream must contact the Native team with the existing communication channel to request permission for this endpoint.

No permission return:

```
{
  "code": 201009,
  "message": "no auth to call"
}
```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.native.org/native-dev/build-with-native/swap-aggregators/firmquote-swap-apis/miscellaneous/blacklisting.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.