diff --git a/API.md b/API.md
index 4660a64..a32619e 100644
--- a/API.md
+++ b/API.md
@@ -14,11 +14,18 @@ export interface RtcConfig {
     bindAddress?: string;
     enableIceTcp?: boolean;
     enableIceUdpMux?: boolean;
+    disableAutoNegotiation?: boolean;
+    disableFingerprintVerification?: boolean;
+    disableAutoGathering?: boolean;
+    forceMediaTransport?: boolean;
     portRangeBegin?: number;
     portRangeEnd?: number;
     maxMessageSize?: number;
     mtu?: number;
     iceTransportPolicy?: TransportPolicy;
+    certificatePemFile?: string;
+    keyPemFile?: string;
+    keyPemPass?: string;
 }
 
 export const enum RelayType {
@@ -65,6 +72,27 @@ export const enum DescriptionType {
 }
 ```
 
+**setLocalDescription: (sdp: string, init?: LocalDescriptionInit) => void**
+
+Set Local Description and optionally the ICE ufrag/pwd to use. These should not
+be set as they will be generated automatically as per the spec.
+```
+export interface LocalDescriptionInit {
+    iceUfrag?: string;
+    icePwd?: string;
+}
+```
+
+**remoteFingerprint: () => CertificateFingerprint**
+
+Returns the certificate fingerprint used by the remote peer
+```
+export interface CertificateFingerprint {
+    value: string;
+    algorithm: 'sha-1' | 'sha-224' | 'sha-256' | 'sha-384' | 'sha-512' | 'md5' | 'md2';
+}
+```
+
 **addRemoteCandidate: (candidate: string, mid: string) => void**
 
 Add remote candidate info