Onboarding

Set the on-chain approvals Predict.fun needs

Predict.fun has no server-side credentials to provision — orders are signed at submission time. This endpoint does the one-time on-chain setup instead: it approves USDT and ConditionalTokens across all four (yieldBearing × negRisk) market variants, gas-sponsored on BSC. A wallet must run this once before its first Predict.fun order; the executor does not approve per trade. Idempotent. Variants already approved are no-ops. A wallet that was only partially approved re-submits just the missing variants on the next call, so retrying is safe.

Error shape. This endpoint returns the minimal {"error": "...", "code": "..."} body (OrderSimpleErrorResponse), NOT the structured error_details envelope used by the Polymarket and Opinion equivalents. Codes: INSUFFICIENT_SCOPE, PLATFORM_API_ACCESS_DISABLED, RATE_LIMITED, INVALID_USER_ID, DATABASE_ERROR. Rate limited at 5 requests/minute per user (bucket clob-provisioning, shared with the other heavy-provisioning endpoints), fail-closed, and checked BEFORE the ownership query so a flood cannot load the database. Each allowed call can launch up to 12 sponsored BSC approvals. Auth & scope. Requires trade:execute for predictfun, wallet ownership, and the mutation gate.

POST

exchanges

predictfun

enable-trading

Set the on-chain approvals Predict.fun needs

curl --request POST \
  --url https://execution.kairos.trade/exchanges/predictfun/enable-trading \
  --header 'Content-Type: application/json' \
  --header 'X-Api-Key: <api-key>' \
  --header 'X-Api-Secret: <api-key>' \
  --header 'X-Client-Id: <api-key>' \
  --data '
{
  "wallet_address": "<string>"
}
'

import requests

url = "https://execution.kairos.trade/exchanges/predictfun/enable-trading"

payload = { "wallet_address": "<string>" }
headers = {
    "X-Client-Id": "<api-key>",
    "X-Api-Key": "<api-key>",
    "X-Api-Secret": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'X-Client-Id': '<api-key>',
    'X-Api-Key': '<api-key>',
    'X-Api-Secret': '<api-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({wallet_address: '<string>'})
};

fetch('https://execution.kairos.trade/exchanges/predictfun/enable-trading', 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://execution.kairos.trade/exchanges/predictfun/enable-trading",
  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([
    'wallet_address' => '<string>'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "X-Api-Key: <api-key>",
    "X-Api-Secret: <api-key>",
    "X-Client-Id: <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://execution.kairos.trade/exchanges/predictfun/enable-trading"

	payload := strings.NewReader("{\n  \"wallet_address\": \"<string>\"\n}")

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

	req.Header.Add("X-Client-Id", "<api-key>")
	req.Header.Add("X-Api-Key", "<api-key>")
	req.Header.Add("X-Api-Secret", "<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://execution.kairos.trade/exchanges/predictfun/enable-trading")
  .header("X-Client-Id", "<api-key>")
  .header("X-Api-Key", "<api-key>")
  .header("X-Api-Secret", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"wallet_address\": \"<string>\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://execution.kairos.trade/exchanges/predictfun/enable-trading")

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

request = Net::HTTP::Post.new(url)
request["X-Client-Id"] = '<api-key>'
request["X-Api-Key"] = '<api-key>'
request["X-Api-Secret"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"wallet_address\": \"<string>\"\n}"

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

{
  "success": true,
  "message": "<string>",
  "tx_hashes": {}
}

{
  "error": "Insufficient scope",
  "code": "<string>"
}

{
  "error": "Unauthorized"
}

{
  "error": "Insufficient scope",
  "code": "<string>"
}

{
  "error": "Insufficient scope",
  "code": "<string>"
}

{
  "error": "Insufficient scope",
  "code": "<string>"
}

{
  "error": "Insufficient scope",
  "code": "<string>"
}

Authorizations

X-Client-Id

string

header

required

Credential client id (kairos_ck_...). Must be sent together with X-Api-Key and X-Api-Secret.

X-Api-Key

string

header

required

64-char hex API key.

X-Api-Secret

string

header

required

64-char hex API secret.

Body

application/json

wallet_address

string

required

BSC EOA to enable. Must be owned by the authenticated caller.

Response

Approvals set (or already present).

success

boolean

required

message

string

required

tx_hashes

object

required

Per-variant approval transaction hashes, keyed by variant label (e.g. plain-binary, yield-negrisk). A variant already approved is a no-op and contributes no entry.

Show child attributes

Set the on-chain approvals Predict.fun needs

curl --request POST \
  --url https://execution.kairos.trade/exchanges/predictfun/enable-trading \
  --header 'Content-Type: application/json' \
  --header 'X-Api-Key: <api-key>' \
  --header 'X-Api-Secret: <api-key>' \
  --header 'X-Client-Id: <api-key>' \
  --data '
{
  "wallet_address": "<string>"
}
'

import requests

url = "https://execution.kairos.trade/exchanges/predictfun/enable-trading"

payload = { "wallet_address": "<string>" }
headers = {
    "X-Client-Id": "<api-key>",
    "X-Api-Key": "<api-key>",
    "X-Api-Secret": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'X-Client-Id': '<api-key>',
    'X-Api-Key': '<api-key>',
    'X-Api-Secret': '<api-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({wallet_address: '<string>'})
};

fetch('https://execution.kairos.trade/exchanges/predictfun/enable-trading', 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://execution.kairos.trade/exchanges/predictfun/enable-trading",
  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([
    'wallet_address' => '<string>'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "X-Api-Key: <api-key>",
    "X-Api-Secret: <api-key>",
    "X-Client-Id: <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://execution.kairos.trade/exchanges/predictfun/enable-trading"

	payload := strings.NewReader("{\n  \"wallet_address\": \"<string>\"\n}")

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

	req.Header.Add("X-Client-Id", "<api-key>")
	req.Header.Add("X-Api-Key", "<api-key>")
	req.Header.Add("X-Api-Secret", "<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://execution.kairos.trade/exchanges/predictfun/enable-trading")
  .header("X-Client-Id", "<api-key>")
  .header("X-Api-Key", "<api-key>")
  .header("X-Api-Secret", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"wallet_address\": \"<string>\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://execution.kairos.trade/exchanges/predictfun/enable-trading")

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

request = Net::HTTP::Post.new(url)
request["X-Client-Id"] = '<api-key>'
request["X-Api-Key"] = '<api-key>'
request["X-Api-Secret"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"wallet_address\": \"<string>\"\n}"

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

{
  "success": true,
  "message": "<string>",
  "tx_hashes": {}
}

{
  "error": "Insufficient scope",
  "code": "<string>"
}

{
  "error": "Unauthorized"
}

{
  "error": "Insufficient scope",
  "code": "<string>"
}

{
  "error": "Insufficient scope",
  "code": "<string>"
}

{
  "error": "Insufficient scope",
  "code": "<string>"
}

{
  "error": "Insufficient scope",
  "code": "<string>"
}

Overview

Market Data API

Data API

Execution API

Agora Auction API

REST Guides

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RFQ Guides

WebSocket Guides

Krisis Guides

Set the on-chain approvals Predict.fun needs

Authorizations

Body

Response