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Bewary VS Nullstack

Compare Bewary VS Nullstack and see what are their differences

Bewary

Bewary is a scam detection API and MCP server for apps and AI agents: check links, domains, phone numbers, emails, crypto wallets and IBANs for phishing and fraud, with the evidence behind each verdict.

Rating
0 reviews
Pricing
Freemium $20 / One-off (Free key: 1,000 credits a month. Prepaid packs from $20.)
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Alternatives Is it good?
Nullstack

Full-stack Javascript Components for one-dev armies

Rating
0 reviews
Pricing
Open source
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Alternatives Is it good?
Knocknoc.io
Removes the attack surface of your assets sponsored
Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Which is more popular?

Fraud Detection And Prevention popularity
100% vs 0%
alternatives listed
9 vs 1

Base details

Website, pricing, platforms and company facts side by side.

Bewary
Nullstack
Website bewary.app nullstack.app
Pricing
Freemium $20 / One-off (Free key: 1,000 credits a month. Prepaid packs from $20.) Official pricing
Open source
Platforms
REST API Web SaaS
—
Company Startup from the United States · 1 - 9 employees · 2026 —
Listed in
Fraud Detection And Prevention Cyber Security Security & Privacy Threat Intelligence Anti-Phishing Developer APIs +3
Framework JavaScript Tech Typescript +1

About Bewary and Nullstack

In their own words, as submitted to SaaSHub.

Bewary
Nullstack

Bewary is a scam detection API and MCP server for apps and AI agents. Send a link, domain, IP address, phone number, SMS short code, email address, crypto wallet, IBAN, mobile app or payment handle and get back a typed verdict (scam, suspicious, safe or unknown), the probability that it is a...

Read more about Bewary

No description of Nullstack yet.

Features and specs

What each product offers, as listed by its team.

Bewary 8 features
Nullstack 5 features
  • Phishing URL check
    Resolves shorteners and redirects, then checks the destination domain's age, brand imitation and phishing and malware feeds.
  • Domain age and lookalike detection
    Registration date, registrar, lookalike-brand technique, abused TLD and blocklist status for any domain.
  • Phone number scam lookup
    Country, number type and the FTC and FCC complaints filed about a phone number: counts, dates and subjects.
  • SMS short code lookup
    Who operates a US SMS short code, and whether it is legitimate, shared or a scam code.
  • Disposable email detection
    Disposable or free provider, role mailbox and the sender domain's facts for an email address.
  • Crypto wallet screening
    Scam reports, OFAC sanctions and Tether and Circle freezes for Bitcoin, Ethereum, Tron and other wallets.
  • MCP Server
    Remote MCP server with 15 tools for Claude, ChatGPT, Cursor and VS Code, with OAuth sign-in or an API key.
  • Bulk feeds and watches
    Scam domain list as CSV, DNS RPZ, STIX 2.1 and TAXII 2.1, rebuilt hourly; watches send events when an entity changes.
  • Full-Stack Capabilities
    Nullstack allows for the development of both client-side and server-side functionalities within a single project, providing a more unified development process.
  • Seamless SSR
    It offers built-in support for server-side rendering, improving performance and SEO without the need for complex configurations.
  • Zero tooling
    Nullstack provides a setup that requires minimal configuration and does not depend heavily on additional tools, simplifying the development workflow.
  • Component-based Architecture
    Promotes the use of components, encouraging modularity and reusability of code, which can improve maintainability and scalability of applications.
  • Hot Module Replacement
    Supports HMR, allowing developers to see immediate changes in their applications without refreshing the entire page, improving development efficiency.

Possible disadvantages

  • Smaller Community
    Compared to more established frameworks, Nullstack has a smaller community, which can result in fewer resources and third-party tools.
  • Learning Curve
    Developers need to learn the Nullstack-specific ways of handling both front-end and back-end development, which might be a hurdle for those accustomed to other frameworks.
  • Limited Ecosystem
    Due to its newer and less widely adopted nature, there might be limited third-party libraries and plugins readily available compared to more mature frameworks.
  • Rapidly Evolving
    Being relatively new and possibly evolving quickly, developers might face breaking changes more frequently compared to more established technologies.

Videos

Walkthroughs and reviews on video.

Bewary 0 videos + Add
Nullstack 3 videos + Add

No Bewary videos yet. You could help us improve this page by suggesting one.

Full-stack with Nullstack - Part 3

More videos

  • - nullstack ship tracker
  • - Como fazer um Hello World com Nullstack passo a passo

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
Bewary
Nullstack
100% 100%
Fraud Detection And Prevention
0% 0%
0% 0%
Framework
100% 100%
100% 100%
Developer APIs
0% 0%
0% 0%
JavaScript
100% 100%

Questions & Answers

As answered by people managing Bewary and Nullstack.

Who are some of the biggest customers of your product?

Bewary's answer

The API launched on 1 November 2026, and there are no customers to name yet.

What's the story behind your product?

Bewary's answer

Bewary started as a consumer scam checker. The engine behind it, built on public complaint data, threat feeds, certificate transparency logs and its own DNS history, turned out to be what businesses and AI agents need, so since November 2026 Bewary is an API, an MCP server and a CLI.

What makes your product unique?

Bewary's answer

Bewary answers from evidence, not from a language model. Each lookup returns a verdict (scam, suspicious, safe or unknown), the probability that it is a scam, the facts behind it and reason codes your code can branch on, and unknown is never safe. One key covers links, domains, IP addresses, phone numbers, SMS short codes, email addresses, crypto wallets, IBANs, mobile apps and payment handles, through a REST API, a remote MCP server for AI agents and a CLI.

Why should a person choose your product over its competitors?

Bewary's answer

One key and one typed response format cover ten kinds of input, so an app or an agent does not stitch together a URL API, a phone API and a wallet screening service. Bewary also answers questions few APIs do: which company operates a US SMS short code, the FTC and FCC complaints behind a phone number, and whether Tether or Circle froze a wallet. Commercial use is allowed, and a free key gets 1,000 credits a month with no card.

How would you describe the primary audience of your product?

Bewary's answer

Developers who add a link, phone number or email check to an app; builders of AI agents that need to check a link, number or payment before acting; trust and safety and fraud teams screening sign-ups, sellers and payouts; and security teams loading a scam domain feed into a DNS resolver or a threat intelligence platform.

Which are the primary technologies used for building your product?

Bewary's answer

Python with FastAPI and PostgreSQL behind the API, a remote MCP server over streamable HTTP with OAuth 2.1 sign-in, a Node.js CLI published on npm as bewary, and an Astro website.

User comments

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Alternatives to Bewary and Nullstack

When comparing Bewary and Nullstack, you can also consider the following products.

  • 1Lookup

    Check phone numbers, emails and IPs through one API: phone validation, HLR, DNC scrubbing, reverse lookup and email verification.

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    A secure runtime for JavaScript and TypeScript built with V8, Rust, and Tokio.

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  • ScamAdviser

    Check if a website is a scam website or a legit website. ScamAdviser helps identify if a webshop is fraudulent or infected with malware, or conducts phishing, fraud, scam and spam activities. Use our free trust and site review checker.

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    VirusTotal is a free service that analyzes suspicious files and URLs and facilitates the quick...

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  • IPQualityScore

    IPQualityScore (IPQS) proactively prevents fraud without disrupting the user experience. Access leading fraud prevention tools to detect bots, emulators, VPNs, proxies, stolen user data, and fake users.

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  • URLscan.io

    urlscan.io is a free service to scan and analyse websites. When a URL is submitted to urlscan.io, an automated process will browse to the URL like a regular user and record the activity that this page navigation creates.

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