curl --request POST \
  --url https://api.launch.o1.exchange/v1/tokens/{chain_id}/{token_address}/metadata/onchain/prepare \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "actor": "0x1111111111111111111111111111111111111111",
  "operation": "update_name",
  "name": "<string>"
}
'

import requests

url = "https://api.launch.o1.exchange/v1/tokens/{chain_id}/{token_address}/metadata/onchain/prepare"

payload = {
    "actor": "0x1111111111111111111111111111111111111111",
    "operation": "update_name",
    "name": "<string>"
}
headers = {
    "x-api-key": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    actor: '0x1111111111111111111111111111111111111111',
    operation: 'update_name',
    name: '<string>'
  })
};

fetch('https://api.launch.o1.exchange/v1/tokens/{chain_id}/{token_address}/metadata/onchain/prepare', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.launch.o1.exchange/v1/tokens/{chain_id}/{token_address}/metadata/onchain/prepare",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'actor' => '0x1111111111111111111111111111111111111111',
    'operation' => 'update_name',
    'name' => '<string>'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-api-key: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.launch.o1.exchange/v1/tokens/{chain_id}/{token_address}/metadata/onchain/prepare"

	payload := strings.NewReader("{\n  \"actor\": \"0x1111111111111111111111111111111111111111\",\n  \"operation\": \"update_name\",\n  \"name\": \"<string>\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("x-api-key", "<api-key>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.launch.o1.exchange/v1/tokens/{chain_id}/{token_address}/metadata/onchain/prepare")
  .header("x-api-key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"actor\": \"0x1111111111111111111111111111111111111111\",\n  \"operation\": \"update_name\",\n  \"name\": \"<string>\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.launch.o1.exchange/v1/tokens/{chain_id}/{token_address}/metadata/onchain/prepare")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["x-api-key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"actor\": \"0x1111111111111111111111111111111111111111\",\n  \"operation\": \"update_name\",\n  \"name\": \"<string>\"\n}"

response = http.request(request)
puts response.read_body

{
  "data": {
    "chain_id": 8453,
    "actor": "0x1111111111111111111111111111111111111111",
    "prepared_at": "2026-07-31T12:00:00.000Z",
    "expires_at": "2026-07-31T12:00:00.000Z",
    "observed_block": "1000000000000000000",
    "issues": [
      {
        "code": "<string>",
        "severity": "blocking",
        "detail": "<string>",
        "asset": "0x1111111111111111111111111111111111111111",
        "spender": "0x1111111111111111111111111111111111111111",
        "actual_raw": "1000000000000000000",
        "required_raw": "1000000000000000000",
        "remediation_step_id": "<string>"
      }
    ],
    "steps": [
      {
        "id": "<string>",
        "kind": "transaction",
        "label": "<string>",
        "depends_on": [
          "<string>"
        ],
        "transaction": {
          "chain_id": 8453,
          "from": "0x1111111111111111111111111111111111111111",
          "to": "0x1111111111111111111111111111111111111111",
          "data": "<string>",
          "value": "1000000000000000000"
        },
        "simulation": {
          "status": "succeeded",
          "block_number": "1000000000000000000"
        }
      }
    ],
    "review": {
      "operation": "update_name",
      "token_address": "0x1111111111111111111111111111111111111111",
      "name": "<string>"
    },
    "metadata_uri": "<string>",
    "image_url": "<string>"
  },
  "meta": {
    "request_id": "req_01JZZZZZZZZZZZZZZZZZZZZZZZ",
    "generated_at": "2026-07-31T12:00:00.000Z",
    "warnings": [
      "<string>"
    ]
  }
}

{
  "type": "https://docs.o1.exchange/launchpad/api/errors-and-limits#not-found",
  "title": "<string>",
  "status": 499,
  "code": "invalid_request",
  "detail": "<string>",
  "action": "<string>",
  "instance": "<string>",
  "request_id": "<string>",
  "invalid_parameters": [
    {
      "name": "<string>",
      "reason": "<string>",
      "detail": "<string>",
      "allowed": [
        "<string>"
      ]
    }
  ],
  "suggested_endpoint": "<string>",
  "resource": "<string>",
  "chain_id": 8453,
  "token_address": "0x1111111111111111111111111111111111111111",
  "asset": "0x1111111111111111111111111111111111111111",
  "actual_raw": "1000000000000000000",
  "required_raw": "1000000000000000000"
}

{
  "type": "https://docs.o1.exchange/launchpad/api/errors-and-limits#not-found",
  "title": "<string>",
  "status": 499,
  "code": "invalid_request",
  "detail": "<string>",
  "action": "<string>",
  "instance": "<string>",
  "request_id": "<string>",
  "invalid_parameters": [
    {
      "name": "<string>",
      "reason": "<string>",
      "detail": "<string>",
      "allowed": [
        "<string>"
      ]
    }
  ],
  "suggested_endpoint": "<string>",
  "resource": "<string>",
  "chain_id": 8453,
  "token_address": "0x1111111111111111111111111111111111111111",
  "asset": "0x1111111111111111111111111111111111111111",
  "actual_raw": "1000000000000000000",
  "required_raw": "1000000000000000000"
}

{
  "type": "https://docs.o1.exchange/launchpad/api/errors-and-limits#not-found",
  "title": "<string>",
  "status": 499,
  "code": "invalid_request",
  "detail": "<string>",
  "action": "<string>",
  "instance": "<string>",
  "request_id": "<string>",
  "invalid_parameters": [
    {
      "name": "<string>",
      "reason": "<string>",
      "detail": "<string>",
      "allowed": [
        "<string>"
      ]
    }
  ],
  "suggested_endpoint": "<string>",
  "resource": "<string>",
  "chain_id": 8453,
  "token_address": "0x1111111111111111111111111111111111111111",
  "asset": "0x1111111111111111111111111111111111111111",
  "actual_raw": "1000000000000000000",
  "required_raw": "1000000000000000000"
}

{
  "type": "https://docs.o1.exchange/launchpad/api/errors-and-limits#not-found",
  "title": "<string>",
  "status": 499,
  "code": "invalid_request",
  "detail": "<string>",
  "action": "<string>",
  "instance": "<string>",
  "request_id": "<string>",
  "invalid_parameters": [
    {
      "name": "<string>",
      "reason": "<string>",
      "detail": "<string>",
      "allowed": [
        "<string>"
      ]
    }
  ],
  "suggested_endpoint": "<string>",
  "resource": "<string>",
  "chain_id": 8453,
  "token_address": "0x1111111111111111111111111111111111111111",
  "asset": "0x1111111111111111111111111111111111111111",
  "actual_raw": "1000000000000000000",
  "required_raw": "1000000000000000000"
}

{
  "type": "https://docs.o1.exchange/launchpad/api/errors-and-limits#not-found",
  "title": "<string>",
  "status": 499,
  "code": "invalid_request",
  "detail": "<string>",
  "action": "<string>",
  "instance": "<string>",
  "request_id": "<string>",
  "invalid_parameters": [
    {
      "name": "<string>",
      "reason": "<string>",
      "detail": "<string>",
      "allowed": [
        "<string>"
      ]
    }
  ],
  "suggested_endpoint": "<string>",
  "resource": "<string>",
  "chain_id": 8453,
  "token_address": "0x1111111111111111111111111111111111111111",
  "asset": "0x1111111111111111111111111111111111111111",
  "actual_raw": "1000000000000000000",
  "required_raw": "1000000000000000000"
}

{
  "type": "https://docs.o1.exchange/launchpad/api/errors-and-limits#not-found",
  "title": "<string>",
  "status": 499,
  "code": "invalid_request",
  "detail": "<string>",
  "action": "<string>",
  "instance": "<string>",
  "request_id": "<string>",
  "invalid_parameters": [
    {
      "name": "<string>",
      "reason": "<string>",
      "detail": "<string>",
      "allowed": [
        "<string>"
      ]
    }
  ],
  "suggested_endpoint": "<string>",
  "resource": "<string>",
  "chain_id": 8453,
  "token_address": "0x1111111111111111111111111111111111111111",
  "asset": "0x1111111111111111111111111111111111111111",
  "actual_raw": "1000000000000000000",
  "required_raw": "1000000000000000000"
}

{
  "type": "https://docs.o1.exchange/launchpad/api/errors-and-limits#not-found",
  "title": "<string>",
  "status": 499,
  "code": "invalid_request",
  "detail": "<string>",
  "action": "<string>",
  "instance": "<string>",
  "request_id": "<string>",
  "invalid_parameters": [
    {
      "name": "<string>",
      "reason": "<string>",
      "detail": "<string>",
      "allowed": [
        "<string>"
      ]
    }
  ],
  "suggested_endpoint": "<string>",
  "resource": "<string>",
  "chain_id": 8453,
  "token_address": "0x1111111111111111111111111111111111111111",
  "asset": "0x1111111111111111111111111111111111111111",
  "actual_raw": "1000000000000000000",
  "required_raw": "1000000000000000000"
}

{
  "type": "https://docs.o1.exchange/launchpad/api/errors-and-limits#not-found",
  "title": "<string>",
  "status": 499,
  "code": "invalid_request",
  "detail": "<string>",
  "action": "<string>",
  "instance": "<string>",
  "request_id": "<string>",
  "invalid_parameters": [
    {
      "name": "<string>",
      "reason": "<string>",
      "detail": "<string>",
      "allowed": [
        "<string>"
      ]
    }
  ],
  "suggested_endpoint": "<string>",
  "resource": "<string>",
  "chain_id": 8453,
  "token_address": "0x1111111111111111111111111111111111111111",
  "asset": "0x1111111111111111111111111111111111111111",
  "actual_raw": "1000000000000000000",
  "required_raw": "1000000000000000000"
}

{
  "type": "https://docs.o1.exchange/launchpad/api/errors-and-limits#not-found",
  "title": "<string>",
  "status": 499,
  "code": "invalid_request",
  "detail": "<string>",
  "action": "<string>",
  "instance": "<string>",
  "request_id": "<string>",
  "invalid_parameters": [
    {
      "name": "<string>",
      "reason": "<string>",
      "detail": "<string>",
      "allowed": [
        "<string>"
      ]
    }
  ],
  "suggested_endpoint": "<string>",
  "resource": "<string>",
  "chain_id": 8453,
  "token_address": "0x1111111111111111111111111111111111111111",
  "asset": "0x1111111111111111111111111111111111111111",
  "actual_raw": "1000000000000000000",
  "required_raw": "1000000000000000000"
}

{
  "type": "https://docs.o1.exchange/launchpad/api/errors-and-limits#not-found",
  "title": "<string>",
  "status": 499,
  "code": "invalid_request",
  "detail": "<string>",
  "action": "<string>",
  "instance": "<string>",
  "request_id": "<string>",
  "invalid_parameters": [
    {
      "name": "<string>",
      "reason": "<string>",
      "detail": "<string>",
      "allowed": [
        "<string>"
      ]
    }
  ],
  "suggested_endpoint": "<string>",
  "resource": "<string>",
  "chain_id": 8453,
  "token_address": "0x1111111111111111111111111111111111111111",
  "asset": "0x1111111111111111111111111111111111111111",
  "actual_raw": "1000000000000000000",
  "required_raw": "1000000000000000000"
}

{
  "type": "https://docs.o1.exchange/launchpad/api/errors-and-limits#not-found",
  "title": "<string>",
  "status": 499,
  "code": "invalid_request",
  "detail": "<string>",
  "action": "<string>",
  "instance": "<string>",
  "request_id": "<string>",
  "invalid_parameters": [
    {
      "name": "<string>",
      "reason": "<string>",
      "detail": "<string>",
      "allowed": [
        "<string>"
      ]
    }
  ],
  "suggested_endpoint": "<string>",
  "resource": "<string>",
  "chain_id": 8453,
  "token_address": "0x1111111111111111111111111111111111111111",
  "asset": "0x1111111111111111111111111111111111111111",
  "actual_raw": "1000000000000000000",
  "required_raw": "1000000000000000000"
}

{
  "type": "https://docs.o1.exchange/launchpad/api/errors-and-limits#not-found",
  "title": "<string>",
  "status": 499,
  "code": "invalid_request",
  "detail": "<string>",
  "action": "<string>",
  "instance": "<string>",
  "request_id": "<string>",
  "invalid_parameters": [
    {
      "name": "<string>",
      "reason": "<string>",
      "detail": "<string>",
      "allowed": [
        "<string>"
      ]
    }
  ],
  "suggested_endpoint": "<string>",
  "resource": "<string>",
  "chain_id": 8453,
  "token_address": "0x1111111111111111111111111111111111111111",
  "asset": "0x1111111111111111111111111111111111111111",
  "actual_raw": "1000000000000000000",
  "required_raw": "1000000000000000000"
}