diff --git a/lexicons/com/atproto/server/createAccount.json b/lexicons/com/atproto/server/createAccount.json
index d9549624741..8d927163951 100644
--- a/lexicons/com/atproto/server/createAccount.json
+++ b/lexicons/com/atproto/server/createAccount.json
@@ -9,7 +9,7 @@
         "encoding": "application/json",
         "schema": {
           "type": "object",
-          "required": ["handle", "email", "password"],
+          "required": ["handle"],
           "properties": {
             "email": { "type": "string" },
             "handle": { "type": "string", "format": "handle" },
diff --git a/lexicons/com/atproto/server/reserveSigningKey.json b/lexicons/com/atproto/server/reserveSigningKey.json
index 27fb0597b0a..3a67ad0a3c8 100644
--- a/lexicons/com/atproto/server/reserveSigningKey.json
+++ b/lexicons/com/atproto/server/reserveSigningKey.json
@@ -5,6 +5,18 @@
     "main": {
       "type": "procedure",
       "description": "Reserve a repo signing key for account creation.",
+      "input": {
+        "encoding": "application/json",
+        "schema": {
+          "type": "object",
+          "properties": {
+            "did": {
+              "type": "string",
+              "description": "The did to reserve a new did:key for"
+            }
+          }
+        }
+      },
       "output": {
         "encoding": "application/json",
         "schema": {
diff --git a/packages/api/src/client/lexicons.ts b/packages/api/src/client/lexicons.ts
index 4030fea961a..d9de1551bcc 100644
--- a/packages/api/src/client/lexicons.ts
+++ b/packages/api/src/client/lexicons.ts
@@ -2489,7 +2489,7 @@ export const schemaDict = {
           encoding: 'application/json',
           schema: {
             type: 'object',
-            required: ['handle', 'email', 'password'],
+            required: ['handle'],
             properties: {
               email: {
                 type: 'string',
@@ -3170,6 +3170,18 @@ export const schemaDict = {
       main: {
         type: 'procedure',
         description: 'Reserve a repo signing key for account creation.',
+        input: {
+          encoding: 'application/json',
+          schema: {
+            type: 'object',
+            properties: {
+              did: {
+                type: 'string',
+                description: 'The did to reserve a new did:key for',
+              },
+            },
+          },
+        },
         output: {
           encoding: 'application/json',
           schema: {
diff --git a/packages/api/src/client/types/com/atproto/server/createAccount.ts b/packages/api/src/client/types/com/atproto/server/createAccount.ts
index b5fb32fe90b..7631727ef19 100644
--- a/packages/api/src/client/types/com/atproto/server/createAccount.ts
+++ b/packages/api/src/client/types/com/atproto/server/createAccount.ts
@@ -10,11 +10,11 @@ import { CID } from 'multiformats/cid'
 export interface QueryParams {}
 
 export interface InputSchema {
-  email: string
+  email?: string
   handle: string
   did?: string
   inviteCode?: string
-  password: string
+  password?: string
   recoveryKey?: string
   plcOp?: {}
   [k: string]: unknown
diff --git a/packages/api/src/client/types/com/atproto/server/reserveSigningKey.ts b/packages/api/src/client/types/com/atproto/server/reserveSigningKey.ts
index e6f4f7a618a..f5e515ff5cf 100644
--- a/packages/api/src/client/types/com/atproto/server/reserveSigningKey.ts
+++ b/packages/api/src/client/types/com/atproto/server/reserveSigningKey.ts
@@ -9,7 +9,11 @@ import { CID } from 'multiformats/cid'
 
 export interface QueryParams {}
 
-export type InputSchema = undefined
+export interface InputSchema {
+  /** The did to reserve a new did:key for */
+  did?: string
+  [k: string]: unknown
+}
 
 export interface OutputSchema {
   /** Public signing key in the form of a did:key. */
@@ -20,6 +24,7 @@ export interface OutputSchema {
 export interface CallOptions {
   headers?: Headers
   qp?: QueryParams
+  encoding: 'application/json'
 }
 
 export interface Response {
diff --git a/packages/bsky/src/lexicon/lexicons.ts b/packages/bsky/src/lexicon/lexicons.ts
index 4030fea961a..d9de1551bcc 100644
--- a/packages/bsky/src/lexicon/lexicons.ts
+++ b/packages/bsky/src/lexicon/lexicons.ts
@@ -2489,7 +2489,7 @@ export const schemaDict = {
           encoding: 'application/json',
           schema: {
             type: 'object',
-            required: ['handle', 'email', 'password'],
+            required: ['handle'],
             properties: {
               email: {
                 type: 'string',
@@ -3170,6 +3170,18 @@ export const schemaDict = {
       main: {
         type: 'procedure',
         description: 'Reserve a repo signing key for account creation.',
+        input: {
+          encoding: 'application/json',
+          schema: {
+            type: 'object',
+            properties: {
+              did: {
+                type: 'string',
+                description: 'The did to reserve a new did:key for',
+              },
+            },
+          },
+        },
         output: {
           encoding: 'application/json',
           schema: {
diff --git a/packages/bsky/src/lexicon/types/com/atproto/server/createAccount.ts b/packages/bsky/src/lexicon/types/com/atproto/server/createAccount.ts
index f82fe9ed82a..109d34cf202 100644
--- a/packages/bsky/src/lexicon/types/com/atproto/server/createAccount.ts
+++ b/packages/bsky/src/lexicon/types/com/atproto/server/createAccount.ts
@@ -11,11 +11,11 @@ import { HandlerAuth } from '@atproto/xrpc-server'
 export interface QueryParams {}
 
 export interface InputSchema {
-  email: string
+  email?: string
   handle: string
   did?: string
   inviteCode?: string
-  password: string
+  password?: string
   recoveryKey?: string
   plcOp?: {}
   [k: string]: unknown
diff --git a/packages/bsky/src/lexicon/types/com/atproto/server/reserveSigningKey.ts b/packages/bsky/src/lexicon/types/com/atproto/server/reserveSigningKey.ts
index 495b87dc03c..ad5a5a8758c 100644
--- a/packages/bsky/src/lexicon/types/com/atproto/server/reserveSigningKey.ts
+++ b/packages/bsky/src/lexicon/types/com/atproto/server/reserveSigningKey.ts
@@ -10,7 +10,11 @@ import { HandlerAuth } from '@atproto/xrpc-server'
 
 export interface QueryParams {}
 
-export type InputSchema = undefined
+export interface InputSchema {
+  /** The did to reserve a new did:key for */
+  did?: string
+  [k: string]: unknown
+}
 
 export interface OutputSchema {
   /** Public signing key in the form of a did:key. */
@@ -18,7 +22,10 @@ export interface OutputSchema {
   [k: string]: unknown
 }
 
-export type HandlerInput = undefined
+export interface HandlerInput {
+  encoding: 'application/json'
+  body: InputSchema
+}
 
 export interface HandlerSuccess {
   encoding: 'application/json'
diff --git a/packages/pds/src/api/com/atproto/server/createAccount.ts b/packages/pds/src/api/com/atproto/server/createAccount.ts
index 2b8998709a5..876eecc5343 100644
--- a/packages/pds/src/api/com/atproto/server/createAccount.ts
+++ b/packages/pds/src/api/com/atproto/server/createAccount.ts
@@ -23,13 +23,20 @@ export default function (server: Server, ctx: AppContext) {
     },
     handler: async ({ input, req }) => {
       const { email, password, inviteCode } = input.body
-
       if (!ctx.cfg.service.isEntryway && !input.body.did && !input.body.plcOp) {
         throw new InvalidRequestError(
           'non-entryway pds requires bringing a DID or PLC operation',
         )
       }
 
+      if (!email) {
+        throw new InvalidRequestError('Missing input: "email"')
+      } else if (!password) {
+        throw new InvalidRequestError('Missing input: "password"')
+      } else if (input.body.plcOp) {
+        throw new InvalidRequestError('Unsupported input: "plcOp"')
+      }
+
       if (ctx.cfg.invites.required && !inviteCode) {
         throw new InvalidRequestError(
           'No invite code provided',
diff --git a/packages/pds/src/lexicon/lexicons.ts b/packages/pds/src/lexicon/lexicons.ts
index 4030fea961a..d9de1551bcc 100644
--- a/packages/pds/src/lexicon/lexicons.ts
+++ b/packages/pds/src/lexicon/lexicons.ts
@@ -2489,7 +2489,7 @@ export const schemaDict = {
           encoding: 'application/json',
           schema: {
             type: 'object',
-            required: ['handle', 'email', 'password'],
+            required: ['handle'],
             properties: {
               email: {
                 type: 'string',
@@ -3170,6 +3170,18 @@ export const schemaDict = {
       main: {
         type: 'procedure',
         description: 'Reserve a repo signing key for account creation.',
+        input: {
+          encoding: 'application/json',
+          schema: {
+            type: 'object',
+            properties: {
+              did: {
+                type: 'string',
+                description: 'The did to reserve a new did:key for',
+              },
+            },
+          },
+        },
         output: {
           encoding: 'application/json',
           schema: {
diff --git a/packages/pds/src/lexicon/types/com/atproto/server/createAccount.ts b/packages/pds/src/lexicon/types/com/atproto/server/createAccount.ts
index f82fe9ed82a..109d34cf202 100644
--- a/packages/pds/src/lexicon/types/com/atproto/server/createAccount.ts
+++ b/packages/pds/src/lexicon/types/com/atproto/server/createAccount.ts
@@ -11,11 +11,11 @@ import { HandlerAuth } from '@atproto/xrpc-server'
 export interface QueryParams {}
 
 export interface InputSchema {
-  email: string
+  email?: string
   handle: string
   did?: string
   inviteCode?: string
-  password: string
+  password?: string
   recoveryKey?: string
   plcOp?: {}
   [k: string]: unknown
diff --git a/packages/pds/src/lexicon/types/com/atproto/server/reserveSigningKey.ts b/packages/pds/src/lexicon/types/com/atproto/server/reserveSigningKey.ts
index 495b87dc03c..ad5a5a8758c 100644
--- a/packages/pds/src/lexicon/types/com/atproto/server/reserveSigningKey.ts
+++ b/packages/pds/src/lexicon/types/com/atproto/server/reserveSigningKey.ts
@@ -10,7 +10,11 @@ import { HandlerAuth } from '@atproto/xrpc-server'
 
 export interface QueryParams {}
 
-export type InputSchema = undefined
+export interface InputSchema {
+  /** The did to reserve a new did:key for */
+  did?: string
+  [k: string]: unknown
+}
 
 export interface OutputSchema {
   /** Public signing key in the form of a did:key. */
@@ -18,7 +22,10 @@ export interface OutputSchema {
   [k: string]: unknown
 }
 
-export type HandlerInput = undefined
+export interface HandlerInput {
+  encoding: 'application/json'
+  body: InputSchema
+}
 
 export interface HandlerSuccess {
   encoding: 'application/json'