Castle
Castle prevents account abuse with cybersecurity APIs and SDKs
Category
Recommended for
- Solo / Indie
- Idea-Stage
- Pre-Seed
- Seed
- Series A
- Scaleup
- Late-Stage
- Public / Enterprise
Castle is a security and compliance solution that offers a suite of APIs and SDKs to monitor user behavior, block malicious bots, and prevent in-app fraud. By integrating Castle into your application, you can leverage its freemium model to stop account abuse and ensure enterprise-grade cybersecurity without added friction. The platform seamlessly connects with Cloudflare or custom edge stacks, providing flexible deployment options. With various plans available, including a free plan and custom enterprise solutions, Castle caters to diverse business needs, prioritizing dedicated support and higher rate limits for its pro and enterprise users. By utilizing Castle's cybersecurity capabilities, businesses can effectively mitigate risks associated with account takeover and maintain a secure user environment.
SSIE
Stage Fit Recommendations
Following data shows why Castle is recommended for listed teams. The Fit Score represents the percentage fit of Castle to each company stages, as calculated by the SSIE.
Stage
Fit Score
Fit Reasons
Solo / Indie
$0–$2,000 MRR
60- Entry pricing sized for this stage
- Free tier available, no upfront cost
- Documented REST API for integration
- Multiple support channels (chat, email)
Idea-Stage
$0
61- Pre-built third-party integrations
Pre-Seed
$0–$10k MRR
66- GDPR - baseline compliance certification
- Multi-factor authentication (MFA) enforcement
- Automated data backup with retention policies
- Documented disaster recovery procedures
Seed
$10k–$100k MRR
66- SOC 2 - core enterprise certification
- Single sign-on (SSO) via SAML 2.0
- Published uptime SLA with availability guarantees
- Documented incident response process
- Dedicated enterprise plan with custom pricing
Series A
$100k–$500k MRR
62- SOC 2 - core enterprise certification
Scaleup
$500k–$2M+ MRR
59- SOC 2 - core enterprise certification
Late-Stage
$2M+ MRR
57- SOC 2 - core enterprise certification
Public / Enterprise
$100M+ ARR
57- SOC 2 - core enterprise certification
Pricing
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