Hello, I'm a U.S.-based PHP/MySQL/Wordpress expert developer. I develop and implement custom Wordpress plugins for clients, for various purposes, ranging from analytics plugins, capture & display of marketing response data (calls, etc), custom dashboards, reminder services (voice & sms), etc.
I also have extensive experience using the Twilio API, building apps such as pure marketing apps, response capture, analytics, reminder sending, and voice menus, inbound & outbound calling, etc. I have never worked with Agile CRM, but I've build integrations with Salesforce, Zoho, and more, and know that Agile's API is well-developed and ready for action.
I'd be able to get your integration up and running quickly and smoothly, with the forwarding you need, as well as API integration (I presume contact-capture is the primary goal), and (depending on your current website and application configuration), some dashboard and UI-based control functions.
Generally, I implement most of my solutions as custom Wordpress plugins, so that they are portable and convenient, but as long as you have PHP installed in your environment, that's fine.