Verification sessions
Submit a capture (client token)
Called by the SDK with the sst_ client token. Multipart only — no URLs, no raw bodies, no threshold overrides. The response is deliberately minimal: the untrusted client never sees scores or the decision. 3 attempts per session; capture-fault errors (413, 422, NONCE_MISMATCH) consume an attempt, server-fault errors refund it.
POST
/
v1
/
verification_sessions
/
submit
Submit a capture (client token)
curl --request POST \
--url https://api.spoofsense.ai/v1/verification_sessions/submit \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: multipart/form-data' \
--form file='@example-file' \
--form 'client_payload=<string>'import requests
url = "https://api.spoofsense.ai/v1/verification_sessions/submit"
files = { "file": ("example-file", open("example-file", "rb")) }
payload = { "client_payload": "<string>" }
headers = {"Authorization": "Bearer <token>"}
response = requests.post(url, data=payload, files=files, headers=headers)
print(response.text)const form = new FormData();
form.append('file', '<string>');
form.append('client_payload', '<string>');
const options = {method: 'POST', headers: {Authorization: 'Bearer <token>'}};
options.body = form;
fetch('https://api.spoofsense.ai/v1/verification_sessions/submit', 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.spoofsense.ai/v1/verification_sessions/submit",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"client_payload\"\r\n\r\n<string>\r\n-----011000010111000001101001--",
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: multipart/form-data"
],
]);
$response = curl_exec($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.spoofsense.ai/v1/verification_sessions/submit"
payload := strings.NewReader("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"client_payload\"\r\n\r\n<string>\r\n-----011000010111000001101001--")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
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.spoofsense.ai/v1/verification_sessions/submit")
.header("Authorization", "Bearer <token>")
.body("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"client_payload\"\r\n\r\n<string>\r\n-----011000010111000001101001--")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.spoofsense.ai/v1/verification_sessions/submit")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request.body = "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"client_payload\"\r\n\r\n<string>\r\n-----011000010111000001101001--"
response = http.request(request)
puts response.read_body{
"id": "vs_1f2e3d4c5b6a79880917263544332211",
"status": "complete",
"credits_remaining": 1232
}{
"error": {
"code": "BAD_REQUEST",
"message": "Provide 'data' (base64) or 'image_url'"
}
}{
"error": {
"code": "INVALID_SESSION_TOKEN",
"message": "Invalid or expired session token"
}
}{
"error": {
"code": "INSUFFICIENT_CREDITS",
"message": "Insufficient credits"
}
}{
"error": {
"code": "SESSION_NOT_PENDING",
"message": "Verification session already completed or failed"
}
}{
"error": {
"code": "SESSION_EXPIRED",
"message": "Verification session expired"
}
}{
"error": {
"code": "IMAGE_TOO_LARGE",
"message": "Image too large (max 10 MB)"
}
}{
"error": {
"code": "FACE_NOT_DETECTED",
"message": "No face found in the image"
}
}{
"error": {
"code": "TOO_MANY_ATTEMPTS",
"message": "Verification session attempt limit reached"
}
}{
"error": {
"code": "UPSTREAM_ERROR",
"message": "Inference service unavailable"
}
}Authorizations
A verification session's single-use client token (sst_…), minted by POST /v1/verification_sessions.
Body
multipart/form-data
⌘I
Submit a capture (client token)
curl --request POST \
--url https://api.spoofsense.ai/v1/verification_sessions/submit \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: multipart/form-data' \
--form file='@example-file' \
--form 'client_payload=<string>'import requests
url = "https://api.spoofsense.ai/v1/verification_sessions/submit"
files = { "file": ("example-file", open("example-file", "rb")) }
payload = { "client_payload": "<string>" }
headers = {"Authorization": "Bearer <token>"}
response = requests.post(url, data=payload, files=files, headers=headers)
print(response.text)const form = new FormData();
form.append('file', '<string>');
form.append('client_payload', '<string>');
const options = {method: 'POST', headers: {Authorization: 'Bearer <token>'}};
options.body = form;
fetch('https://api.spoofsense.ai/v1/verification_sessions/submit', 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.spoofsense.ai/v1/verification_sessions/submit",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"client_payload\"\r\n\r\n<string>\r\n-----011000010111000001101001--",
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: multipart/form-data"
],
]);
$response = curl_exec($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.spoofsense.ai/v1/verification_sessions/submit"
payload := strings.NewReader("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"client_payload\"\r\n\r\n<string>\r\n-----011000010111000001101001--")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
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.spoofsense.ai/v1/verification_sessions/submit")
.header("Authorization", "Bearer <token>")
.body("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"client_payload\"\r\n\r\n<string>\r\n-----011000010111000001101001--")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.spoofsense.ai/v1/verification_sessions/submit")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request.body = "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"client_payload\"\r\n\r\n<string>\r\n-----011000010111000001101001--"
response = http.request(request)
puts response.read_body{
"id": "vs_1f2e3d4c5b6a79880917263544332211",
"status": "complete",
"credits_remaining": 1232
}{
"error": {
"code": "BAD_REQUEST",
"message": "Provide 'data' (base64) or 'image_url'"
}
}{
"error": {
"code": "INVALID_SESSION_TOKEN",
"message": "Invalid or expired session token"
}
}{
"error": {
"code": "INSUFFICIENT_CREDITS",
"message": "Insufficient credits"
}
}{
"error": {
"code": "SESSION_NOT_PENDING",
"message": "Verification session already completed or failed"
}
}{
"error": {
"code": "SESSION_EXPIRED",
"message": "Verification session expired"
}
}{
"error": {
"code": "IMAGE_TOO_LARGE",
"message": "Image too large (max 10 MB)"
}
}{
"error": {
"code": "FACE_NOT_DETECTED",
"message": "No face found in the image"
}
}{
"error": {
"code": "TOO_MANY_ATTEMPTS",
"message": "Verification session attempt limit reached"
}
}{
"error": {
"code": "UPSTREAM_ERROR",
"message": "Inference service unavailable"
}
}