diff --git a/protocol/simplex-uri-request.txt b/protocol/simplex-uri-request.txt
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+Scheme name: simplex
+
+Status: Provisional
+
+Applications/protocols that use this scheme name:
+This scheme is used for connection requests in SimpleX Agent Protocol,
+a middle layer protocol for managing bi-directional communication via
+redundant unidirectional SimpleX Messaging Protocol queues.
+
+Contact: Evgeny Poberezkin <ep@simplex.chat>
+
+Change controller: Evgeny Poberezkin <ep@simplex.chat>
+
+References:
+The syntax for connection requests in the latest version of SimpleX Agent Protocol:
+https://github.com/simplex-chat/simplexmq/blob/v5/protocol/agent-protocol.md#connection-request
+SimpleX Messaging Protocol:
+https://github.com/simplex-chat/simplexmq/blob/v5/protocol/simplex-messaging.md