WebServius

View the list of all your API subscribers (including their name, contact information and company affiliation) in one place
Keep track of multiple API subscriptions per subscriber (if you choose to allow this)
Access API subscriber history, including old/inactive subscriptions
Add subscribers manually and/or allow developers to subscribe in a self-service fashion
Shut down problematic subscribers or subscriptions

Allow developers to subscribe to your API and get API keys by simply linking to a WebServius-powered subscription page from your site
Offer multiple API subscription packages to developers (e.g. free trial, regular pricing, premium pricing
Define a license agreement that developers must accept before they can use your API
Require subscribers to verify their email address
Require subscribers to verify their phone number

Ensure that only registered subscribers can access your API
Limit free API access to any quota you specify (e.g. up to 10,000 free calls per month) and adjust it at any time
Define access policies that prevent certain subscribers from accessing certain parts of your API
Throttle the API call rate (e.g. maximum of 100 calls per minute) on a per-service or per-subscriber basis

Integrate the API consumer portal into your own website
Use your own URL (e.g. api.yourdomain.com) for your APIs
Upload your logo to be shown during the self-service subscription process (coming soon)
Integrate your site's user accounts with WebServius accounts (coming soon)

Create pay-per-use pricing plans (e.g. $0.0003 per call) with up to 6 digits of precision
Results-based pricing (e.g. if your API has a 'search' operation, you can charge per search result returned instead of per API call made)
Create monthly pricing plans (e.g. $20 per month for up to 50,000 calls, and $0.0003 per call thereafter)
Create "freemium" pricing plans (e.g. up to 10,000 free calls per month, and $0.0003 per call thereafter)
Set different prices for different types of API calls (e.g. real-time weather costs 2 times as much as historical weather data)
Receive payment for API subscriptions collected by WebServius on your behalf as a consolidated monthly check, with no extra effort on your part

Connect almost any REST service regardless of payload format (XML, JSON, images, etc.) by simply providing its URL
Both proxy-based and proxyless solutions are available — learn more
Use either HTTP or HTTPS for your private API endpoint
Offer HTTP or HTTPS access (or both) to your subscribers
Use URI templates to differentiate between types of API calls for metering and access control purposes
Control whether failed API calls are counted for metering and billing purposes
Easy integration with BlankSlate.com APIs - view demo here
Easy integration with Amazon SimpleDB data - view demo here
Offer API access from Adobe Flash and Microsoft Silverlight (coming soon)

Pay for API subscriptions using credit card, PayPal, and PayPal pre-approved payments
Pay for API subscriptions using PayPal pre-approved payments (coming soon)
See a consolidated list of all API subscriptions including API keys, terms, payment due dates, technical documentation (provided by you), and other relevant information
View remaining limits, balance, upcoming payment dates, and payment history
Cancel API subscriptions

API management features