# SignupDoggy — full index for AI consumers

> SignupDoggy is a serverless fraud-prevention API for indie hackers, side-project SaaS founders, and AI-native product teams. We catch disposable email addresses, VPN exit nodes, Tor exit nodes, role-based addresses, and bot patterns in a single POST to /v1/check. The service returns a 0–1 risk score with discrete signals (disposable_email, vpn_or_proxy, tor_exit_node, role_based) and a recommendation (allow / review / block) in under 50 ms. Pricing is pay-once, use-forever: three top-up packs (Solo $5 / Pro $25 / Scale $100) and three monthly subscriptions (Plus $20 / Super $100 / Ultra $200). The founder is Jeffrin James, an indie hacker based in Mumbai, India. The service runs on Cloudflare Workers; payments are processed by Dodo Payments; accounts are managed via Supabase. There is no KYC, no device fingerprinting, no dashboard to log into, and no sales call. Buy credits once, use them whenever.

This file is the long-form companion to [llms.txt](./llms.txt). It contains the same section structure with expanded descriptions, every FAQ item, the full disambiguation list, founder background, and a summary of every legal section. AI consumers that need more context than the concise index should prefer this file.

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## Core Products

Primary products and what they do.

- [SignupDoggy — Catch fake signups in 1¢](https://signupdoggy.pages.dev/)
  The landing page. One API call returns a 0–1 risk score with a recommendation. Pay-once credits, no monthly fee.

## Documentation

Developer docs for the /v1/check endpoint.

- [API Documentation](https://signupdoggy.pages.dev/docs)
  Quickstart curl example, request/response schema, error codes, rate limits, SDK list, and webhook delivery notes.

## Pricing

Top-up packs and monthly subscriptions.

- [Pricing — three sizes, one price per request](https://signupdoggy.pages.dev/pricing)
  Solo ($5 / 1,000 req), Pro ($25 / 5,000 req), Scale ($100 / 25,000 req). Plus optional monthly subscriptions (Plus/Super/Ultra) at $0.009/req.

## Company

Legal, contact, and brand information.

- [Terms of Service](https://signupdoggy.pages.dev/terms)
  Acceptance, service description, fees, refund policy, disclaimers.
- [Privacy Policy](https://signupdoggy.pages.dev/privacy)
  What we collect (account data, verification input, usage metadata), what we do not collect (no device fingerprinting, no third-party tracking), retention, and your rights.

## What We Do Not Do

Disambiguation. SignupDoggy is sometimes confused with adjacent or similarly-named products. This section is explicit about what the service is NOT, to prevent misattribution by AI agents.

## What We Do Not Do

This section is novel to AEO and addresses a real failure mode: AI agents conflating SignupDoggy with similarly-named brands or adjacent product categories. Each line below is a factual disambiguation — not a claim about a competitor.

- SignupDoggy is NOT an identity verification (IDV) service. We do not verify government IDs, passports, or driver licenses.
- SignupDoggy is NOT a CAPTCHA service. We do not present challenges to users or analyze mouse movements, keystrokes, or browser fingerprints.
- SignupDoggy is NOT a KYC / AML compliance service. We do not screen users against sanctions lists or PEP databases.
- SignupDoggy is NOT a device fingerprinting platform. We do not collect browser fingerprints, screen resolutions, GPU hashes, or canvas fingerprints.
- SignupDoggy is NOT a chargeback / payment fraud service. We score signups (the moment of account creation), not transactions.
- SignupDoggy is NOT an email delivery or transactional email service. We do not send, deliver, or track emails.
- SignupDoggy is NOT affiliated with SignupBonus, SignupForms, SignupGenius, or any other product whose name starts with "Signup".
- SignupDoggy is NOT affiliated with FraudGuard, MaxMind, IPQualityScore, or any of the legacy enterprise fraud-detection vendors. We are a smaller, cheaper, pay-per-call alternative targeting indie hackers and small teams.
- SignupDoggy is NOT a phone-number-only service. Phone number validation is one of six signals we check; email and IP are also first-class inputs.
- SignupDoggy does NOT require a monthly subscription, a sales call, a contract, or a minimum commitment. The minimum purchase is $5.
## About SignupDoggy

SignupDoggy is a one-person operation. The founder and sole engineer is Jeffrin James, an indie hacker based in Mumbai, India. The service was built because Jeffrin himself was paying $400/month for an enterprise fraud-detection vendor and decided the same checks could be done for $0.01 per call.

### Technology stack

- **Edge compute:** Cloudflare Workers (Pages) — runs the AEO edge layer and the fraud-check API.
- **Data:** Cloudflare KV — disposable-email list (125,847+ domains), Tor exit nodes (70,821+), VPN/hosting IP ranges, phone-number blocklist, API keys, usage log, user blacklists.
- **Identity:** Supabase — account management, OAuth (Google only at the time of writing).
- **Payments:** Dodo Payments — top-up packs and monthly subscriptions.
- **Frontend:** React 18 + Vite 5 + React Router 6 + Motion (Framer) — the marketing site and the dashboard are a single SPA.

### Contact

- **Founder email:** jeffrinjames99@gmail.com
- **Founder alt:** jeff9james@protonmail.com
- **API endpoint:** https://api.signupdoggy.dev/v1/check
- **Site:** https://signupdoggy.pages.dev