Update a participant
curl --request PATCH \
--url https://attend.hackclub.com/api/v1/events/{event_id}/participants/{id} \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"fill_blanks": false,
"participant": {
"legal_first_name": "<string>",
"legal_last_name": "<string>",
"preferred_name": "<string>",
"email": "[email protected]",
"date_of_birth": "2023-12-25",
"phone": "<string>",
"pronouns": "<string>",
"tshirt_size": "<string>",
"country_of_residence": "<string>",
"address_line_1": "<string>",
"address_line_2": "<string>",
"city": "<string>",
"state": "<string>",
"postal_code": "<string>"
}
}
'import requests
url = "https://attend.hackclub.com/api/v1/events/{event_id}/participants/{id}"
payload = {
"fill_blanks": False,
"participant": {
"legal_first_name": "<string>",
"legal_last_name": "<string>",
"preferred_name": "<string>",
"email": "[email protected]",
"date_of_birth": "2023-12-25",
"phone": "<string>",
"pronouns": "<string>",
"tshirt_size": "<string>",
"country_of_residence": "<string>",
"address_line_1": "<string>",
"address_line_2": "<string>",
"city": "<string>",
"state": "<string>",
"postal_code": "<string>"
}
}
headers = {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.patch(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'PATCH',
headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
body: JSON.stringify({
fill_blanks: false,
participant: {
legal_first_name: '<string>',
legal_last_name: '<string>',
preferred_name: '<string>',
email: '[email protected]',
date_of_birth: '2023-12-25',
phone: '<string>',
pronouns: '<string>',
tshirt_size: '<string>',
country_of_residence: '<string>',
address_line_1: '<string>',
address_line_2: '<string>',
city: '<string>',
state: '<string>',
postal_code: '<string>'
}
})
};
fetch('https://attend.hackclub.com/api/v1/events/{event_id}/participants/{id}', 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://attend.hackclub.com/api/v1/events/{event_id}/participants/{id}",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "PATCH",
CURLOPT_POSTFIELDS => json_encode([
'fill_blanks' => false,
'participant' => [
'legal_first_name' => '<string>',
'legal_last_name' => '<string>',
'preferred_name' => '<string>',
'email' => '[email protected]',
'date_of_birth' => '2023-12-25',
'phone' => '<string>',
'pronouns' => '<string>',
'tshirt_size' => '<string>',
'country_of_residence' => '<string>',
'address_line_1' => '<string>',
'address_line_2' => '<string>',
'city' => '<string>',
'state' => '<string>',
'postal_code' => '<string>'
]
]),
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: application/json"
],
]);
$response = curl_exec($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://attend.hackclub.com/api/v1/events/{event_id}/participants/{id}"
payload := strings.NewReader("{\n \"fill_blanks\": false,\n \"participant\": {\n \"legal_first_name\": \"<string>\",\n \"legal_last_name\": \"<string>\",\n \"preferred_name\": \"<string>\",\n \"email\": \"[email protected]\",\n \"date_of_birth\": \"2023-12-25\",\n \"phone\": \"<string>\",\n \"pronouns\": \"<string>\",\n \"tshirt_size\": \"<string>\",\n \"country_of_residence\": \"<string>\",\n \"address_line_1\": \"<string>\",\n \"address_line_2\": \"<string>\",\n \"city\": \"<string>\",\n \"state\": \"<string>\",\n \"postal_code\": \"<string>\"\n }\n}")
req, _ := http.NewRequest("PATCH", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
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.patch("https://attend.hackclub.com/api/v1/events/{event_id}/participants/{id}")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"fill_blanks\": false,\n \"participant\": {\n \"legal_first_name\": \"<string>\",\n \"legal_last_name\": \"<string>\",\n \"preferred_name\": \"<string>\",\n \"email\": \"[email protected]\",\n \"date_of_birth\": \"2023-12-25\",\n \"phone\": \"<string>\",\n \"pronouns\": \"<string>\",\n \"tshirt_size\": \"<string>\",\n \"country_of_residence\": \"<string>\",\n \"address_line_1\": \"<string>\",\n \"address_line_2\": \"<string>\",\n \"city\": \"<string>\",\n \"state\": \"<string>\",\n \"postal_code\": \"<string>\"\n }\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://attend.hackclub.com/api/v1/events/{event_id}/participants/{id}")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Patch.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"fill_blanks\": false,\n \"participant\": {\n \"legal_first_name\": \"<string>\",\n \"legal_last_name\": \"<string>\",\n \"preferred_name\": \"<string>\",\n \"email\": \"[email protected]\",\n \"date_of_birth\": \"2023-12-25\",\n \"phone\": \"<string>\",\n \"pronouns\": \"<string>\",\n \"tshirt_size\": \"<string>\",\n \"country_of_residence\": \"<string>\",\n \"address_line_1\": \"<string>\",\n \"address_line_2\": \"<string>\",\n \"city\": \"<string>\",\n \"state\": \"<string>\",\n \"postal_code\": \"<string>\"\n }\n}"
response = http.request(request)
puts response.read_body{
"participant": {
"participant_id": 123,
"participant_event_id": 123,
"display_name": "Jane",
"full_name": "Jane Doe",
"email": "[email protected]",
"slack_user_id": "<string>",
"phone": "<string>",
"pronouns": "<string>",
"headshot_url": "<string>",
"status": "invited",
"checked_in_at": "2023-11-07T05:31:56Z",
"nfc_badge_token": "<string>",
"nfc_badge_assigned": true,
"has_anaphylaxis_risk": true,
"requires_refrigeration": true,
"cross_contamination_risk": true,
"high_support_flag": true,
"can_leave_unaccompanied": true,
"waiver_signed": true,
"updated_at": "2023-11-07T05:31:56Z",
"scans_by_context": [
{
"scan_context_id": 123,
"scan_context_name": "<string>",
"checks_in": true,
"is_travel_pickup": true,
"is_airport": true,
"scan_count": 123,
"first_scanned_at": "2023-11-07T05:31:56Z",
"last_scanned_at": "2023-11-07T05:31:56Z"
}
],
"travel_inbound": {
"id": 123,
"direction": "inbound",
"mode": "plane",
"visa_required": true,
"visa_status": "<string>",
"visa_type": "<string>",
"visa_number": "<string>",
"passport_nationality": "<string>",
"is_unaccompanied_minor": true,
"carrier": "<string>",
"flight_number": "<string>",
"train_departure_station": "<string>",
"train_arrival_station": "<string>",
"departure_station": "<string>",
"arrival_station": "<string>",
"departure_city": "<string>",
"arrival_city": "<string>",
"departure_time": "2023-11-07T05:31:56Z",
"arrival_time": "2023-11-07T05:31:56Z",
"expected_arrival_time": "2023-11-07T05:31:56Z",
"bus_departure_location": "<string>",
"bus_arrival_location": "<string>",
"origin_address": "<string>",
"other_details": "<string>",
"notes": "<string>",
"pickup_dismissed_at": "2023-11-07T05:31:56Z",
"legs": [
{
"id": 123,
"position": 123,
"flight_code": "<string>",
"departure_airport": "<string>",
"arrival_airport": "<string>",
"departure_time": "2023-11-07T05:31:56Z",
"arrival_time": "2023-11-07T05:31:56Z",
"live_status": "<string>",
"live_departure_time": "2023-11-07T05:31:56Z",
"live_arrival_time": "2023-11-07T05:31:56Z",
"travel_picked_up_at": "2023-11-07T05:31:56Z",
"airport_picked_up_at": "2023-11-07T05:31:56Z"
}
]
},
"travel_outbound": {
"id": 123,
"direction": "inbound",
"mode": "plane",
"visa_required": true,
"visa_status": "<string>",
"visa_type": "<string>",
"visa_number": "<string>",
"passport_nationality": "<string>",
"is_unaccompanied_minor": true,
"carrier": "<string>",
"flight_number": "<string>",
"train_departure_station": "<string>",
"train_arrival_station": "<string>",
"departure_station": "<string>",
"arrival_station": "<string>",
"departure_city": "<string>",
"arrival_city": "<string>",
"departure_time": "2023-11-07T05:31:56Z",
"arrival_time": "2023-11-07T05:31:56Z",
"expected_arrival_time": "2023-11-07T05:31:56Z",
"bus_departure_location": "<string>",
"bus_arrival_location": "<string>",
"origin_address": "<string>",
"other_details": "<string>",
"notes": "<string>",
"pickup_dismissed_at": "2023-11-07T05:31:56Z",
"legs": [
{
"id": 123,
"position": 123,
"flight_code": "<string>",
"departure_airport": "<string>",
"arrival_airport": "<string>",
"departure_time": "2023-11-07T05:31:56Z",
"arrival_time": "2023-11-07T05:31:56Z",
"live_status": "<string>",
"live_departure_time": "2023-11-07T05:31:56Z",
"live_arrival_time": "2023-11-07T05:31:56Z",
"travel_picked_up_at": "2023-11-07T05:31:56Z",
"airport_picked_up_at": "2023-11-07T05:31:56Z"
}
]
},
"allergies": "<string>",
"medical_conditions": "<string>",
"medications": "<string>",
"diet_type": "<string>",
"life_threatening_allergies": "<string>",
"freedom_waiver_granted": true,
"emergency_contacts": [
{
"name": "<string>",
"phone": "<string>",
"relationship": "<string>",
"priority": 123
}
],
"parent_guardian_name": "<string>",
"parent_guardian_phone": "<string>",
"parent_guardian_email": "<string>"
},
"skipped_fields": [
"<string>"
]
}{
"error": "Unauthorized"
}{
"error": "Unauthorized"
}{
"error": "Unauthorized"
}{
"error": "Unauthorized"
}Participants
Update a participant
Edits the person and/or where their registration stands. Only the keys you send are written.
status is the API form of the withdraw and reinstate buttons:
withdrawn withdraws them, in_progress reinstates them — after which
the displayed status is recomputed from their onboarding progress.
Date of birth, phone number and address are writable by every caller that gets this far, including API keys and PII-restricted roles, which cannot read them back: the response is redacted exactly as a read would be.
To backfill details without overwriting anything the participant
entered themselves, send fill_blanks: true. Only fields that are
empty (or legal names still on the “Unknown” placeholder) are written,
and the response lists the fields that were left alone in
skipped_fields. The address counts as one value: if any part of one
is on file, every address field sent is skipped, so a backfill never
mixes its address into the participant’s. Find the registration id for
an email with the lookup endpoint.
PATCH
/
events
/
{event_id}
/
participants
/
{id}
Update a participant
curl --request PATCH \
--url https://attend.hackclub.com/api/v1/events/{event_id}/participants/{id} \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"fill_blanks": false,
"participant": {
"legal_first_name": "<string>",
"legal_last_name": "<string>",
"preferred_name": "<string>",
"email": "[email protected]",
"date_of_birth": "2023-12-25",
"phone": "<string>",
"pronouns": "<string>",
"tshirt_size": "<string>",
"country_of_residence": "<string>",
"address_line_1": "<string>",
"address_line_2": "<string>",
"city": "<string>",
"state": "<string>",
"postal_code": "<string>"
}
}
'import requests
url = "https://attend.hackclub.com/api/v1/events/{event_id}/participants/{id}"
payload = {
"fill_blanks": False,
"participant": {
"legal_first_name": "<string>",
"legal_last_name": "<string>",
"preferred_name": "<string>",
"email": "[email protected]",
"date_of_birth": "2023-12-25",
"phone": "<string>",
"pronouns": "<string>",
"tshirt_size": "<string>",
"country_of_residence": "<string>",
"address_line_1": "<string>",
"address_line_2": "<string>",
"city": "<string>",
"state": "<string>",
"postal_code": "<string>"
}
}
headers = {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.patch(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'PATCH',
headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
body: JSON.stringify({
fill_blanks: false,
participant: {
legal_first_name: '<string>',
legal_last_name: '<string>',
preferred_name: '<string>',
email: '[email protected]',
date_of_birth: '2023-12-25',
phone: '<string>',
pronouns: '<string>',
tshirt_size: '<string>',
country_of_residence: '<string>',
address_line_1: '<string>',
address_line_2: '<string>',
city: '<string>',
state: '<string>',
postal_code: '<string>'
}
})
};
fetch('https://attend.hackclub.com/api/v1/events/{event_id}/participants/{id}', 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://attend.hackclub.com/api/v1/events/{event_id}/participants/{id}",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "PATCH",
CURLOPT_POSTFIELDS => json_encode([
'fill_blanks' => false,
'participant' => [
'legal_first_name' => '<string>',
'legal_last_name' => '<string>',
'preferred_name' => '<string>',
'email' => '[email protected]',
'date_of_birth' => '2023-12-25',
'phone' => '<string>',
'pronouns' => '<string>',
'tshirt_size' => '<string>',
'country_of_residence' => '<string>',
'address_line_1' => '<string>',
'address_line_2' => '<string>',
'city' => '<string>',
'state' => '<string>',
'postal_code' => '<string>'
]
]),
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: application/json"
],
]);
$response = curl_exec($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://attend.hackclub.com/api/v1/events/{event_id}/participants/{id}"
payload := strings.NewReader("{\n \"fill_blanks\": false,\n \"participant\": {\n \"legal_first_name\": \"<string>\",\n \"legal_last_name\": \"<string>\",\n \"preferred_name\": \"<string>\",\n \"email\": \"[email protected]\",\n \"date_of_birth\": \"2023-12-25\",\n \"phone\": \"<string>\",\n \"pronouns\": \"<string>\",\n \"tshirt_size\": \"<string>\",\n \"country_of_residence\": \"<string>\",\n \"address_line_1\": \"<string>\",\n \"address_line_2\": \"<string>\",\n \"city\": \"<string>\",\n \"state\": \"<string>\",\n \"postal_code\": \"<string>\"\n }\n}")
req, _ := http.NewRequest("PATCH", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
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.patch("https://attend.hackclub.com/api/v1/events/{event_id}/participants/{id}")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"fill_blanks\": false,\n \"participant\": {\n \"legal_first_name\": \"<string>\",\n \"legal_last_name\": \"<string>\",\n \"preferred_name\": \"<string>\",\n \"email\": \"[email protected]\",\n \"date_of_birth\": \"2023-12-25\",\n \"phone\": \"<string>\",\n \"pronouns\": \"<string>\",\n \"tshirt_size\": \"<string>\",\n \"country_of_residence\": \"<string>\",\n \"address_line_1\": \"<string>\",\n \"address_line_2\": \"<string>\",\n \"city\": \"<string>\",\n \"state\": \"<string>\",\n \"postal_code\": \"<string>\"\n }\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://attend.hackclub.com/api/v1/events/{event_id}/participants/{id}")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Patch.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"fill_blanks\": false,\n \"participant\": {\n \"legal_first_name\": \"<string>\",\n \"legal_last_name\": \"<string>\",\n \"preferred_name\": \"<string>\",\n \"email\": \"[email protected]\",\n \"date_of_birth\": \"2023-12-25\",\n \"phone\": \"<string>\",\n \"pronouns\": \"<string>\",\n \"tshirt_size\": \"<string>\",\n \"country_of_residence\": \"<string>\",\n \"address_line_1\": \"<string>\",\n \"address_line_2\": \"<string>\",\n \"city\": \"<string>\",\n \"state\": \"<string>\",\n \"postal_code\": \"<string>\"\n }\n}"
response = http.request(request)
puts response.read_body{
"participant": {
"participant_id": 123,
"participant_event_id": 123,
"display_name": "Jane",
"full_name": "Jane Doe",
"email": "[email protected]",
"slack_user_id": "<string>",
"phone": "<string>",
"pronouns": "<string>",
"headshot_url": "<string>",
"status": "invited",
"checked_in_at": "2023-11-07T05:31:56Z",
"nfc_badge_token": "<string>",
"nfc_badge_assigned": true,
"has_anaphylaxis_risk": true,
"requires_refrigeration": true,
"cross_contamination_risk": true,
"high_support_flag": true,
"can_leave_unaccompanied": true,
"waiver_signed": true,
"updated_at": "2023-11-07T05:31:56Z",
"scans_by_context": [
{
"scan_context_id": 123,
"scan_context_name": "<string>",
"checks_in": true,
"is_travel_pickup": true,
"is_airport": true,
"scan_count": 123,
"first_scanned_at": "2023-11-07T05:31:56Z",
"last_scanned_at": "2023-11-07T05:31:56Z"
}
],
"travel_inbound": {
"id": 123,
"direction": "inbound",
"mode": "plane",
"visa_required": true,
"visa_status": "<string>",
"visa_type": "<string>",
"visa_number": "<string>",
"passport_nationality": "<string>",
"is_unaccompanied_minor": true,
"carrier": "<string>",
"flight_number": "<string>",
"train_departure_station": "<string>",
"train_arrival_station": "<string>",
"departure_station": "<string>",
"arrival_station": "<string>",
"departure_city": "<string>",
"arrival_city": "<string>",
"departure_time": "2023-11-07T05:31:56Z",
"arrival_time": "2023-11-07T05:31:56Z",
"expected_arrival_time": "2023-11-07T05:31:56Z",
"bus_departure_location": "<string>",
"bus_arrival_location": "<string>",
"origin_address": "<string>",
"other_details": "<string>",
"notes": "<string>",
"pickup_dismissed_at": "2023-11-07T05:31:56Z",
"legs": [
{
"id": 123,
"position": 123,
"flight_code": "<string>",
"departure_airport": "<string>",
"arrival_airport": "<string>",
"departure_time": "2023-11-07T05:31:56Z",
"arrival_time": "2023-11-07T05:31:56Z",
"live_status": "<string>",
"live_departure_time": "2023-11-07T05:31:56Z",
"live_arrival_time": "2023-11-07T05:31:56Z",
"travel_picked_up_at": "2023-11-07T05:31:56Z",
"airport_picked_up_at": "2023-11-07T05:31:56Z"
}
]
},
"travel_outbound": {
"id": 123,
"direction": "inbound",
"mode": "plane",
"visa_required": true,
"visa_status": "<string>",
"visa_type": "<string>",
"visa_number": "<string>",
"passport_nationality": "<string>",
"is_unaccompanied_minor": true,
"carrier": "<string>",
"flight_number": "<string>",
"train_departure_station": "<string>",
"train_arrival_station": "<string>",
"departure_station": "<string>",
"arrival_station": "<string>",
"departure_city": "<string>",
"arrival_city": "<string>",
"departure_time": "2023-11-07T05:31:56Z",
"arrival_time": "2023-11-07T05:31:56Z",
"expected_arrival_time": "2023-11-07T05:31:56Z",
"bus_departure_location": "<string>",
"bus_arrival_location": "<string>",
"origin_address": "<string>",
"other_details": "<string>",
"notes": "<string>",
"pickup_dismissed_at": "2023-11-07T05:31:56Z",
"legs": [
{
"id": 123,
"position": 123,
"flight_code": "<string>",
"departure_airport": "<string>",
"arrival_airport": "<string>",
"departure_time": "2023-11-07T05:31:56Z",
"arrival_time": "2023-11-07T05:31:56Z",
"live_status": "<string>",
"live_departure_time": "2023-11-07T05:31:56Z",
"live_arrival_time": "2023-11-07T05:31:56Z",
"travel_picked_up_at": "2023-11-07T05:31:56Z",
"airport_picked_up_at": "2023-11-07T05:31:56Z"
}
]
},
"allergies": "<string>",
"medical_conditions": "<string>",
"medications": "<string>",
"diet_type": "<string>",
"life_threatening_allergies": "<string>",
"freedom_waiver_granted": true,
"emergency_contacts": [
{
"name": "<string>",
"phone": "<string>",
"relationship": "<string>",
"priority": 123
}
],
"parent_guardian_name": "<string>",
"parent_guardian_phone": "<string>",
"parent_guardian_email": "<string>"
},
"skipped_fields": [
"<string>"
]
}{
"error": "Unauthorized"
}{
"error": "Unauthorized"
}{
"error": "Unauthorized"
}{
"error": "Unauthorized"
}Authorizations
Mobile token, global API token, series API key, or event API key. See Authentication above for which endpoints each one reaches.
Path Parameters
Event id or slug.
The participant_event id — one person's registration for this event.
Body
application/json
Response
The updated participant.
A participant registration. Sensitive fields (allergies, medical, dietary, safeguarding, emergency and guardian contacts) are only present for global admins and safeguarding leads.
Show child attributes
Show child attributes
Only with fill_blanks: the fields sent that already had a value, so were not written.
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