SIGNUP RISK API
Score signup risk using email, domain, disposable-provider, identity-pattern, and optional IP evidence. Receive a deterministic allow, review, or block decision with clear reasons, confidence, evidence coverage, and uncertainty.
Deterministic 0–100 signup risk score
Clear allow, review, or block decision
Explainable evidence and decision confidence
Bulk jobs and signed webhooks on Growth+
HOW SIGNUP RISK SCORING WORKS
Send the signals you already collect during signup — email, name, IP address, domain, provider context, and industry — and get back a deterministic score your product can act on immediately.
Use the email, name, IP address, provider, domain, and industry context already present in your signup flow.
Combine identity, email, infrastructure, and context signals into a reproducible 0–100 risk score.
Use the allow, review, or block recommendation to approve trusted users, challenge uncertain signups, and stop high-risk attempts.
RISK CHECKS
Use Signup Risk Score API to evaluate email structure, disposable domains, domain infrastructure, provider type, role addresses, typo domains, synthetic identity patterns, name/email consistency, and optional IP reputation.
Normalize and check email structure. A well-formed email can be analyzed, but that does not mean it is safe, trusted, deliverable, or non-disposable.
Detect confirmed and likely burner domains using curated datasets, operational overlays, and safe infrastructure fingerprints.
Check DNS, MX, SPF, and DMARC posture while separating non-existent domains from temporary lookup failures.
Classify free providers, business domains, education domains, government domains, disposable providers, and unknown providers.
Detect shared addresses like admin@, support@, info@, sales@, and similar role-based accounts.
Flag mistyped or lookalike domains such as gmal.com before they enter your signup flow.
Find placeholder emails, keyboard patterns, numeric-only local parts, and other low-quality identity patterns.
Compare supplied name details with the email local part without claiming to verify a person’s real identity.
Classify contextual infrastructure risk such as datacenter, VPN, proxy, and Tor usage. Raw IPs are never returned, persisted, or logged.
Apply Growth+ scoring profiles for SaaS, marketplace, ecommerce, community, and fintech signup flows.
USE CASES
Use Signup Risk Score API anywhere a fake account, low-quality lead, abusive IP, or suspicious signup can waste time, damage trust, or create downstream fraud.
Detect burner emails, suspicious names, and high-risk IPs before users create repeat trial accounts or abuse free-tier access.
Challenge sellers using proxy infrastructure, disposable domains, mismatched identity signals, or suspicious signup patterns.
Block spam accounts and low-quality registrations before they enter forums, communities, waitlists, or member-only spaces.
Classify free vs business emails, detect role accounts, and route higher-quality leads before they reach your CRM.
Flag suspicious checkout or account-creation attempts using email, IP, identity, and infrastructure signals before abuse escalates.
Upload CSV files, score signup lists asynchronously, and retrieve clean risk results for reviews, imports, or downstream workflows.
Send signup context from your application and receive a deterministic risk score, check breakdown, and allow/review/block recommendation your product can use immediately.
Add Signup Risk Score API to account creation, lead capture, checkout, waitlist, or seller onboarding. Use the recommendation directly, or inspect the check breakdown for custom routing.
Real-time scoring for signup and lead flows
Deterministic 0–100 risk score
Explainable allow, review, or block recommendation
Every signup attempt passes through multiple intelligence layers to generate a deterministic risk score and actionable recommendation.
Normalize and validate email structure before analysis begins.
Identify burner and temporary email providers using curated datasets.
Analyze MX, SPF, and DMARC records to assess domain legitimacy.
Determine whether the email comes from free, corporate, education, government, or disposable providers.
Detect role-based accounts such as support@, admin@, or sales@.
Identify common domain misspellings and suggest corrections.
Generate a deterministic 0–100 risk score using explainable signal contributions.
Final deterministic recommendation based on all analysis layers.
Every decision is backed by explainable signals, helping developers understand exactly why a signup attempt was flagged.
DECISIONS YOU CAN EXPLAIN
Every successful analysis returns more than a score. The response explains which checks affected the result, how persuasive the evidence is, how broadly the signup was evaluated, and what uncertainty remains.
Receive an allow, review, or block action alongside a deterministic 0–100 risk score and risk band.
See how authoritative and persuasive the evidence behind the current decision is.
Understand how many relevant and independent risk dimensions were successfully evaluated.
See how stable the current action is and whether unresolved limitations should affect your enforcement decision.
Assessment describes the quality and completeness of the available evidence. It is not a fraud probability, identity-verification result, mailbox-ownership check, or accuracy percentage.
Built for inline signup flows
Bulk + webhooks on Growth+
Privacy-first risk details
Signup Risk Score API helps developers and businesses reduce fraud, improve lead quality, and protect user onboarding experiences.
Reduce spam registrations and fraudulent accounts by analyzing email trust signals during account creation.
Identify disposable email providers before users repeatedly exploit free trials and promotional offers.
Catch disposable, mistyped, and suspicious email addresses before they enter sales and marketing systems.
Use deterministic risk scoring to identify potentially malicious or low-quality signups before onboarding.
Detect typo domains and invalid email configurations to improve the accuracy of customer records.
Use deterministic risk scoring and explainable recommendations to confidently automate allow, review, or block decisions.
Choose the plan that matches your signup volume and risk workflow. Start with real-time scoring, then upgrade as you need more requests, explanations, IP intelligence, bulk processing, webhooks, and industry-specific scoring.
For evaluation and lightweight testing.
200 requests / month
50 explanations / month
Core signup risk score
Email and provider signals
For small projects and early production flows.
10,000 requests / month
500 explanations / month
Core risk scoring
Name and email intelligence
For production apps that need richer risk signals.
50,000 requests / month
5,000 explanations / month
IP intelligence
Higher rate limits
For teams automating signup-risk workflows.
150,000 requests / month
Bulk file processing
Signed webhooks
Industry profiles
For high-volume signup flows and fraud-sensitive products.
500,000 requests / month
Unlimited explanations
Priority capacity
Advanced workflow features
For custom volume, custom rate limits, and advanced operational requirements.
Custom request volume
Custom rate limits
Advanced operational support
Enterprise capabilities
Need more detail? View the complete pricing breakdown for quotas, rate limits, and feature gates.
View Full PricingEverything you need to understand how Signup Risk Score API fits into your signup, lead, checkout, or onboarding flow.
Still have questions about scoring signups? Contact our technical team.
START SCORING SIGNUPS
Use Signup Risk Score API to score signup risk in real time and route each attempt with an allow, review, or block recommendation.
No credit card required. Built for developers shipping production signup flows.
