Free
Free
Free tier published at $0/mo with included API usage credits on the pricing page.
- Usage credit
- Includes $5 of API usage with 5,000 IP lookups or 1,000 Risk API calls.
- Seats
- Three seats and one environment on the Free plan card.
Castle
● Identity checkedSecurity · Vendor site 2026-10-04
Castle provides SDKs and APIs to detect bots, monitor risky logins, and stop account abuse using device, email, IP, and behavioral intelligence. Teams integrate Castle to score traffic and automate policy actions in web and mobile apps.
- Category
- Security
- Free access
- Free plan includes $5 of API usage with 5,000 IP lookups or 1,000 Risk API calls for evaluation.
- API access
- Docs describe Castle as a suite of APIs for bot detection and abuse prevention with Risk and IP Intelligence endpoints.
Is Castle right for you?
A good fit for
Product and fraud teams at consumer apps that need bot detection, account takeover protection, and IP intelligence without heavy integration friction.
Before you choose
Enterprise tier is custom from $4,000/mo with sales contact; Pro includes rate limits of 5 requests per second.
Bot and abuse prevention APIs
Castle combines SDKs and APIs with device and behavioral signals so teams can monitor users, score risk, and stop coordinated abuse at scale.
What it can do
Features & capabilities
Unknown is different from unavailable. Each fact carries its own evidence.
| Capability | Value | Evidence | Checked |
|---|---|---|---|
| Risk API | Homepage markets device, email, IP, and behavioral intelligence to block bots and account abuse. | Facts sourced | 2026-10-04 |
| Free tier | Pricing lists a Free plan with included API usage to evaluate before production. | Facts sourced | 2026-10-04 |
| Documentation | Castle docs overview describes a suite of APIs for bot detection and abuse prevention. | Facts sourced | 2026-10-04 |
Understand the total cost
Castle pricing & plans
Pro
$200.00 /mo
Pro plan is listed at $200/mo including $200 of API usage on castle.io/pricing.
- Limits
- Higher 5 RPS rate limit, 7-day retention, five seats, and chat/email support.
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Frequently asked questions
What is Castle used for?
Castle provides SDKs and APIs to detect bots, monitor risky logins, and stop account abuse using device, email, IP, and behavioral intelligence. Teams integrate Castle to score traffic and automate policy actions in web and mobile apps.
Does Castle have a free plan?
Free plan includes $5 of API usage with 5,000 IP lookups or 1,000 Risk API calls for evaluation.. This record lists ongoing free access; check the plan limits before starting.
How much does Castle cost?
The listed monthly price is $200.00 USD at monthly billing. See the plan cards for entitlements, billing commitments and seat minimums.
Can I use Castle through an API?
Docs describe Castle as a suite of APIs for bot detection and abuse prevention with Risk and IP Intelligence endpoints.. API access and subscription access may have different terms; consult the linked sources.
What should I check before choosing it?
Enterprise tier is custom from $4,000/mo with sales contact; Pro includes rate limits of 5 requests per second.
Price history
No retained pricing changes yet. A current price alone does not establish a historical trend.
How this profile is supported
Identity and profile
Reviewed vendor source
Read original source ↗Facts apply to the named version and check date. Send a sourced correction if something changed.