Castle · Pricing Plans
Castle Plans Pricing
Castle Plans Pricing is the pricing profile for Castle on the APIs.io network — every figure transcribed verbatim from the provider’s own pricing page on 2026-10-28.
It defines 3 plans, including Free — $0 /mo; Pro — $200 /mo; Enterprise — starts at $4,000/mo.
The page prices API or platform usage directly, as a tiered subscription; the service is delivered as managed.
Tagged areas include Company, Security, Fraud Prevention, Bot Detection, and Device Fingerprinting.
3 Plans
Prices the API
Basis: tiered subscription
Delivered: managed
Transcribed from the provider's pricing page on 2026-10-28 — castle.io/pricing/.
View Source
CompanySecurityFraud PreventionBot DetectionDevice FingerprintingAccount TakeoverRisk ScoringIdentity
Plans
Free
month
$0 /mo per plan
Includes: Includes $5 of API usage; 5,000 IP lookups, or 1,000 Risk API calls; 3 days data retention; 3 seats, 1 environment
Overage: The Free plan has a fixed API budget for evaluating Castle and does not support overages.
Pro
month
$200 /mo per plan
Includes: Includes $200 of API usage; 200,000 IP lookups, or 40,000 Risk API calls; 7 days data retention; 5 seats, 2 environments
Overage: usage above the monthly included budget is billed on a pay-as-you-go basis at the same per-request rates ($0.005 Risk/Filter request, $0.001 IP Intelligence request)
Enterprise
month
starts at $4,000/mo per plan
Includes: Up to 18 months data retention, unlimited seats & environments, dedicated Slack channel & SLA; MTU or volume pricing
Overage: Custom
Sources
Work with this as data
Every plan here is available over the APIs.io API and to AI agents over MCP.