8.0 KiB
Parallel.ai Auto-Registration (2026-07-20)
Platform Overview
- URL: https://platform.parallel.ai
- API Base: https://api.parallel.ai/
- Auth: NextAuth.js (v5) with email magic-link provider
- Framework: Next.js App Router, React Server Components
- API Key format:
[a-zA-Z0-9_-]{30,50}(notps_prefix — that's PostHog)
Auth Flow (Fully Reverse-Engineered)
Step 1: Get CSRF Token
GET https://platform.parallel.ai/api/auth/csrf
→ {"csrfToken":"..."}
Saves cookie: next-auth.csrf-token
Step 2: Send Magic Link
POST https://platform.parallel.ai/api/auth/signin/email
Content-Type: application/x-www-form-urlencoded
Body: email=<email>&csrfToken=<token>&callbackUrl=https://platform.parallel.ai/post-auth-sign-up
→ 302 → /api/auth/verify-request?provider=email&type=email
The callbackUrl determines post-auth redirect:
/post-auth-sign-up→ new user onboarding/→ existing user dashboard
Step 3: Read Magic Link from Email
Email arrives from noreply@parallel.ai with subject "Log in to Parallel Web Systems".
The body contains: https://platform.parallel.ai/redirect?to=<encoded_callback_url>
Decode the callback URL:
from urllib.parse import unquote
to_match = re.search(r'to=([^&]+)', redirect_url)
callback_url = unquote(to_match.group(1))
# → https://platform.parallel.ai/api/auth/callback/email?callbackUrl=...&token=[REDACTED]
Pitfall: The token in the callback URL is SINGLE-USE and expires in ~2 minutes. Do NOT send the magic link and then poll IMAP for 30 seconds — the token will expire. The IMAP polling must be fast (<15 seconds).
Pitfall: If the same email is used for multiple signup attempts, the inbox will have multiple Parallel emails. ALWAYS filter by email date — only use emails received AFTER the magic link was sent:
sent_time = datetime.now(timezone.utc)
# ... in IMAP polling loop:
msg_date = parsedate_to_datetime(msg.get('Date'))
if msg_date and msg_date > sent_time:
# This is our email
Step 4: Follow Callback
GET https://platform.parallel.ai/api/auth/callback/email?callbackUrl=...&token=[REDACTED]
→ 302 → /post-auth-sign-up → 307 → /onboard
Sets session cookie: st=<JWT>
Step 5: Verify Session
GET https://platform.parallel.ai/api/auth/session
→ {"user":{"email":"..."},"expires":"...","accountServiceUserId":"..."}
Step 6: Create Organization
POST https://platform.parallel.ai/api/rpc/onboard/create-org-with-visibility
Content-Type: application/json
Body: {"orgName":"Research","visibility":"private"}
→ {"kind":"ok","data":{"success":true,"data":{"org_id":"...","org_name":"..."}}}
Pitfall: visibility field name is correct. name or org_name will fail with "Invalid input: expected string, received undefined". The field is orgName.
Step 7: Get API Key
POST https://platform.parallel.ai/api/rpc/auth/get-my-api-key-and-session-details
Content-Type: application/json
Body: {}
→ {"kind":"ok","data":{"apiKey":"...","orgDomain":"...","baseUrl":"https://api.parallel.ai/"}}
Pitfall: This endpoint requires POST with JSON body (even empty {}). GET returns 405. POST without Content-Type returns 415.
Step 8: Verify API Key
POST https://api.parallel.ai/v1/search
Authorization: Bearer <api_key>
Content-Type: application/json
Body: {"search_queries":["test"]}
→ 200 = valid key (may return "Insufficient credit" if $0 balance, but key IS valid)
→ 401 = invalid/expired key
Credit System
Domain Classification
POST https://platform.parallel.ai/api/rpc/onboard/check-email-domain
Body: {"email":"user@domain.com"}
→ {"domainType":"public"|"business"|"private","isPublicOrTemp":true|false}
- Business/private domains (e.g., @company.com, @reforrm.me): $80 credits, no card required (user confirmed)
- Public domains (e.g., @gmail.com, @t-online.de, @yahoo.com): $0 credits, may require card for $5/mo free tier
- BUT: t-online.de classified as
domainType: "public"yet ~89% of registered accounts (17/19 tested) still get working credits despite $0 balance shown. The credit check is inconsistent — some accounts work, some don't.
Balance Check
POST https://platform.parallel.ai/api/rpc/billing/payments/get-balance-due
Body: {}
→ {"kind":"ok","data":{"balance":0,"pendingDebitBalanceCents":0}}
All Discovered RPC Endpoints
Onboard Page (chunk: page-2a73a49c346d7f15.js)
POST /api/rpc/onboard/check-email-domain—{"email":"..."}→ domain classificationPOST /api/rpc/onboard/create-org-with-visibility—{"orgName":"...","visibility":"private"}→ org_idPOST /api/rpc/onboard/get-user-orgs—{}→ list of orgsPOST /api/rpc/onboard/set-selected-org—{"orgId":"..."}→ select orgPOST /api/rpc/onboard/create-join-request— join existing orgPOST /api/rpc/onboard/discover-orgs— find orgs by domainPOST /api/rpc/onboard/invite-users— invite to orgPOST /api/rpc/onboard/set-org-domain-status— domain verificationPOST /api/rpc/onboard/preload-org-data-for-home— dashboard dataPOST /api/rpc/onboard/get-user-join-requests— pending requests
Settings/Nav (chunk: 34932-6935ecb29a09831c.js)
POST /api/rpc/auth/get-my-api-key-and-session-details— get API key (POST + JSON required)POST /api/rpc/auth/refresh-my-api-key-and-session-details— refresh key (POST + JSON)POST /api/rpc/auth/ensure-selected-org—{"selectedOrgId":"..."}— set active orgPOST /api/rpc/billing/payments/get-balance-due— balance checkPOST /api/rpc/billing/payments/has-payment-method—{"hasPaymentMethod":false}POST /api/rpc/billing/payments/refresh-balance— needs selected orgPOST /api/rpc/onboard/clear-bootstrap-cookies— reset onboardingPOST /api/rpc/staging/enable-staging-auto-route— staging featurePOST /api/rpc/staging/disable-staging-auto-route— staging feature
Reverse-Engineering Methodology
How to Find API Endpoints in Next.js Apps
- Get the page's JS chunks from the HTML source:
re.findall(r'/_next/static/chunks/[^"]+\.js[^"]*', html) - Identify the page-specific chunk: usually named
page-*.jsor has the page name - Download and grep for RPC endpoints:
re.findall(r'"/api/rpc/[^"]*"', chunk_text) - Test endpoints with the session cookie from a valid auth flow
How to Find Field Names (When API Returns "expected string, received undefined")
The error messages tell you the exact field name:
"fieldErrors":{"orgName":["Invalid input: expected string, received undefined"]}
→ The field is orgName, NOT name, org_name, or organization.
t-online.de IMAP for Magic Link Reading
import imaplib, ssl
ctx = ssl.create_default_context()
ctx.check_hostname = False
ctx.verify_mode = ssl.CERT_NONE
mail = imaplib.IMAP4_SSL('imap.t-online.de', 993, ssl_context=ctx, timeout=10)
mail.login('[REDACTED-EMAIL]', 'password')
mail.select('INBOX')
# CRITICAL: call noop() before each search to refresh mailbox
mail.noop()
status, messages = mail.search(None, 'ALL')
Pitfall: t-online.de SSL certificate fails standard verification. MUST use ssl_context with check_hostname=False and verify_mode=CERT_NONE. Without this, ssl.SSLCertVerificationError.
Script Template
See templates/parallel_autoreg.py for the full working registration script.
See templates/parallel_proxy.py for the API key rotator proxy (retries on 402/429).
Production instances (2026-07-20):
- Registration:
C:\\Users\\User\\Documents\\parallel_autoreg.py - Proxy:
C:\\Users\\User\\Documents\\parallel_proxy.py(port 8765, 70 keys) - Parser:
C:\\Users\\User\\Documents\\parallel_parse.py - Deduped email file:
C:\\Users\\User\\Documents\\t-online_deduped.txt(9764 unique emails) - Source:
C:\\Users\\User\\Desktop\\Downloads_backup_01.07.2026\\working_mails_RECOVERED.txt(9800 lines) - Output keys:
C:\\Users\\User\\Documents\\parallel_keys.json(70 keys) - API keys only:
C:\\Users\\User\\Documents\\parallel_api_keys.txt