diff --git a/.changeset/late-eels-jam.md b/.changeset/late-eels-jam.md
new file mode 100644
index 00000000000..65cab507ef2
--- /dev/null
+++ b/.changeset/late-eels-jam.md
@@ -0,0 +1,5 @@
+---
+"@atproto/api": patch
+---
+
+Add com.atproto.temp.addReservedHandle lexicon
diff --git a/lexicons/com/atproto/temp/addReservedHandle.json b/lexicons/com/atproto/temp/addReservedHandle.json
new file mode 100644
index 00000000000..a8b1aac9b0a
--- /dev/null
+++ b/lexicons/com/atproto/temp/addReservedHandle.json
@@ -0,0 +1,27 @@
+{
+  "lexicon": 1,
+  "id": "com.atproto.temp.addReservedHandle",
+  "defs": {
+    "main": {
+      "type": "procedure",
+      "description": "Add a handle to the set of reserved handles.",
+      "input": {
+        "encoding": "application/json",
+        "schema": {
+          "type": "object",
+          "required": ["handle"],
+          "properties": {
+            "handle": { "type": "string" }
+          }
+        }
+      },
+      "output": {
+        "encoding": "application/json",
+        "schema": {
+          "type": "object",
+          "properties": {}
+        }
+      }
+    }
+  }
+}
diff --git a/packages/api/src/client/index.ts b/packages/api/src/client/index.ts
index e9b1b3e059a..9ee329fe593 100644
--- a/packages/api/src/client/index.ts
+++ b/packages/api/src/client/index.ts
@@ -81,6 +81,7 @@ import * as ComAtprotoSyncListRepos from './types/com/atproto/sync/listRepos'
 import * as ComAtprotoSyncNotifyOfUpdate from './types/com/atproto/sync/notifyOfUpdate'
 import * as ComAtprotoSyncRequestCrawl from './types/com/atproto/sync/requestCrawl'
 import * as ComAtprotoSyncSubscribeRepos from './types/com/atproto/sync/subscribeRepos'
+import * as ComAtprotoTempAddReservedHandle from './types/com/atproto/temp/addReservedHandle'
 import * as ComAtprotoTempCheckSignupQueue from './types/com/atproto/temp/checkSignupQueue'
 import * as ComAtprotoTempFetchLabels from './types/com/atproto/temp/fetchLabels'
 import * as ComAtprotoTempRequestPhoneVerification from './types/com/atproto/temp/requestPhoneVerification'
@@ -307,6 +308,7 @@ export * as ComAtprotoSyncListRepos from './types/com/atproto/sync/listRepos'
 export * as ComAtprotoSyncNotifyOfUpdate from './types/com/atproto/sync/notifyOfUpdate'
 export * as ComAtprotoSyncRequestCrawl from './types/com/atproto/sync/requestCrawl'
 export * as ComAtprotoSyncSubscribeRepos from './types/com/atproto/sync/subscribeRepos'
+export * as ComAtprotoTempAddReservedHandle from './types/com/atproto/temp/addReservedHandle'
 export * as ComAtprotoTempCheckSignupQueue from './types/com/atproto/temp/checkSignupQueue'
 export * as ComAtprotoTempFetchLabels from './types/com/atproto/temp/fetchLabels'
 export * as ComAtprotoTempRequestPhoneVerification from './types/com/atproto/temp/requestPhoneVerification'
@@ -1417,6 +1419,18 @@ export class ComAtprotoTempNS {
     this._client = client
   }
 
+  addReservedHandle(
+    data?: ComAtprotoTempAddReservedHandle.InputSchema,
+    opts?: ComAtprotoTempAddReservedHandle.CallOptions,
+  ): Promise<ComAtprotoTempAddReservedHandle.Response> {
+    return this._client.call(
+      'com.atproto.temp.addReservedHandle',
+      opts?.qp,
+      data,
+      opts,
+    )
+  }
+
   checkSignupQueue(
     params?: ComAtprotoTempCheckSignupQueue.QueryParams,
     opts?: ComAtprotoTempCheckSignupQueue.CallOptions,
diff --git a/packages/api/src/client/lexicons.ts b/packages/api/src/client/lexicons.ts
index af6d524641c..dbb06b20bd6 100644
--- a/packages/api/src/client/lexicons.ts
+++ b/packages/api/src/client/lexicons.ts
@@ -3959,6 +3959,35 @@ export const schemaDict = {
       },
     },
   },
+  ComAtprotoTempAddReservedHandle: {
+    lexicon: 1,
+    id: 'com.atproto.temp.addReservedHandle',
+    defs: {
+      main: {
+        type: 'procedure',
+        description: 'Add a handle to the set of reserved handles.',
+        input: {
+          encoding: 'application/json',
+          schema: {
+            type: 'object',
+            required: ['handle'],
+            properties: {
+              handle: {
+                type: 'string',
+              },
+            },
+          },
+        },
+        output: {
+          encoding: 'application/json',
+          schema: {
+            type: 'object',
+            properties: {},
+          },
+        },
+      },
+    },
+  },
   ComAtprotoTempCheckSignupQueue: {
     lexicon: 1,
     id: 'com.atproto.temp.checkSignupQueue',
@@ -13545,6 +13574,7 @@ export const ids = {
   ComAtprotoSyncNotifyOfUpdate: 'com.atproto.sync.notifyOfUpdate',
   ComAtprotoSyncRequestCrawl: 'com.atproto.sync.requestCrawl',
   ComAtprotoSyncSubscribeRepos: 'com.atproto.sync.subscribeRepos',
+  ComAtprotoTempAddReservedHandle: 'com.atproto.temp.addReservedHandle',
   ComAtprotoTempCheckSignupQueue: 'com.atproto.temp.checkSignupQueue',
   ComAtprotoTempFetchLabels: 'com.atproto.temp.fetchLabels',
   ComAtprotoTempRequestPhoneVerification:
diff --git a/packages/api/src/client/types/com/atproto/temp/addReservedHandle.ts b/packages/api/src/client/types/com/atproto/temp/addReservedHandle.ts
new file mode 100644
index 00000000000..e86337519ee
--- /dev/null
+++ b/packages/api/src/client/types/com/atproto/temp/addReservedHandle.ts
@@ -0,0 +1,36 @@
+/**
+ * GENERATED CODE - DO NOT MODIFY
+ */
+import { HeadersMap, XRPCError } from '@atproto/xrpc'
+import { ValidationResult, BlobRef } from '@atproto/lexicon'
+import { isObj, hasProp } from '../../../../util'
+import { lexicons } from '../../../../lexicons'
+import { CID } from 'multiformats/cid'
+
+export interface QueryParams {}
+
+export interface InputSchema {
+  handle: string
+  [k: string]: unknown
+}
+
+export interface OutputSchema {
+  [k: string]: unknown
+}
+
+export interface CallOptions {
+  signal?: AbortSignal
+  headers?: HeadersMap
+  qp?: QueryParams
+  encoding?: 'application/json'
+}
+
+export interface Response {
+  success: boolean
+  headers: HeadersMap
+  data: OutputSchema
+}
+
+export function toKnownErr(e: any) {
+  return e
+}
diff --git a/packages/bsky/src/lexicon/index.ts b/packages/bsky/src/lexicon/index.ts
index 0eb29893730..7a8a13149ed 100644
--- a/packages/bsky/src/lexicon/index.ts
+++ b/packages/bsky/src/lexicon/index.ts
@@ -80,6 +80,7 @@ import * as ComAtprotoSyncListRepos from './types/com/atproto/sync/listRepos'
 import * as ComAtprotoSyncNotifyOfUpdate from './types/com/atproto/sync/notifyOfUpdate'
 import * as ComAtprotoSyncRequestCrawl from './types/com/atproto/sync/requestCrawl'
 import * as ComAtprotoSyncSubscribeRepos from './types/com/atproto/sync/subscribeRepos'
+import * as ComAtprotoTempAddReservedHandle from './types/com/atproto/temp/addReservedHandle'
 import * as ComAtprotoTempCheckSignupQueue from './types/com/atproto/temp/checkSignupQueue'
 import * as ComAtprotoTempFetchLabels from './types/com/atproto/temp/fetchLabels'
 import * as ComAtprotoTempRequestPhoneVerification from './types/com/atproto/temp/requestPhoneVerification'
@@ -1092,6 +1093,17 @@ export class ComAtprotoTempNS {
     this._server = server
   }
 
+  addReservedHandle<AV extends AuthVerifier>(
+    cfg: ConfigOf<
+      AV,
+      ComAtprotoTempAddReservedHandle.Handler<ExtractAuth<AV>>,
+      ComAtprotoTempAddReservedHandle.HandlerReqCtx<ExtractAuth<AV>>
+    >,
+  ) {
+    const nsid = 'com.atproto.temp.addReservedHandle' // @ts-ignore
+    return this._server.xrpc.method(nsid, cfg)
+  }
+
   checkSignupQueue<AV extends AuthVerifier>(
     cfg: ConfigOf<
       AV,
diff --git a/packages/bsky/src/lexicon/lexicons.ts b/packages/bsky/src/lexicon/lexicons.ts
index d564ae8824a..8897212dcb8 100644
--- a/packages/bsky/src/lexicon/lexicons.ts
+++ b/packages/bsky/src/lexicon/lexicons.ts
@@ -3959,6 +3959,35 @@ export const schemaDict = {
       },
     },
   },
+  ComAtprotoTempAddReservedHandle: {
+    lexicon: 1,
+    id: 'com.atproto.temp.addReservedHandle',
+    defs: {
+      main: {
+        type: 'procedure',
+        description: 'Add a handle to the set of reserved handles.',
+        input: {
+          encoding: 'application/json',
+          schema: {
+            type: 'object',
+            required: ['handle'],
+            properties: {
+              handle: {
+                type: 'string',
+              },
+            },
+          },
+        },
+        output: {
+          encoding: 'application/json',
+          schema: {
+            type: 'object',
+            properties: {},
+          },
+        },
+      },
+    },
+  },
   ComAtprotoTempCheckSignupQueue: {
     lexicon: 1,
     id: 'com.atproto.temp.checkSignupQueue',
@@ -10784,6 +10813,7 @@ export const ids = {
   ComAtprotoSyncNotifyOfUpdate: 'com.atproto.sync.notifyOfUpdate',
   ComAtprotoSyncRequestCrawl: 'com.atproto.sync.requestCrawl',
   ComAtprotoSyncSubscribeRepos: 'com.atproto.sync.subscribeRepos',
+  ComAtprotoTempAddReservedHandle: 'com.atproto.temp.addReservedHandle',
   ComAtprotoTempCheckSignupQueue: 'com.atproto.temp.checkSignupQueue',
   ComAtprotoTempFetchLabels: 'com.atproto.temp.fetchLabels',
   ComAtprotoTempRequestPhoneVerification:
diff --git a/packages/bsky/src/lexicon/types/com/atproto/temp/addReservedHandle.ts b/packages/bsky/src/lexicon/types/com/atproto/temp/addReservedHandle.ts
new file mode 100644
index 00000000000..b884cb08998
--- /dev/null
+++ b/packages/bsky/src/lexicon/types/com/atproto/temp/addReservedHandle.ts
@@ -0,0 +1,48 @@
+/**
+ * GENERATED CODE - DO NOT MODIFY
+ */
+import express from 'express'
+import { ValidationResult, BlobRef } from '@atproto/lexicon'
+import { lexicons } from '../../../../lexicons'
+import { isObj, hasProp } from '../../../../util'
+import { CID } from 'multiformats/cid'
+import { HandlerAuth, HandlerPipeThrough } from '@atproto/xrpc-server'
+
+export interface QueryParams {}
+
+export interface InputSchema {
+  handle: string
+  [k: string]: unknown
+}
+
+export interface OutputSchema {
+  [k: string]: unknown
+}
+
+export interface HandlerInput {
+  encoding: 'application/json'
+  body: InputSchema
+}
+
+export interface HandlerSuccess {
+  encoding: 'application/json'
+  body: OutputSchema
+  headers?: { [key: string]: string }
+}
+
+export interface HandlerError {
+  status: number
+  message?: string
+}
+
+export type HandlerOutput = HandlerError | HandlerSuccess | HandlerPipeThrough
+export type HandlerReqCtx<HA extends HandlerAuth = never> = {
+  auth: HA
+  params: QueryParams
+  input: HandlerInput
+  req: express.Request
+  res: express.Response
+}
+export type Handler<HA extends HandlerAuth = never> = (
+  ctx: HandlerReqCtx<HA>,
+) => Promise<HandlerOutput> | HandlerOutput
diff --git a/packages/ozone/src/lexicon/index.ts b/packages/ozone/src/lexicon/index.ts
index 7bcf0756578..b4c27f52018 100644
--- a/packages/ozone/src/lexicon/index.ts
+++ b/packages/ozone/src/lexicon/index.ts
@@ -80,6 +80,7 @@ import * as ComAtprotoSyncListRepos from './types/com/atproto/sync/listRepos'
 import * as ComAtprotoSyncNotifyOfUpdate from './types/com/atproto/sync/notifyOfUpdate'
 import * as ComAtprotoSyncRequestCrawl from './types/com/atproto/sync/requestCrawl'
 import * as ComAtprotoSyncSubscribeRepos from './types/com/atproto/sync/subscribeRepos'
+import * as ComAtprotoTempAddReservedHandle from './types/com/atproto/temp/addReservedHandle'
 import * as ComAtprotoTempCheckSignupQueue from './types/com/atproto/temp/checkSignupQueue'
 import * as ComAtprotoTempFetchLabels from './types/com/atproto/temp/fetchLabels'
 import * as ComAtprotoTempRequestPhoneVerification from './types/com/atproto/temp/requestPhoneVerification'
@@ -1135,6 +1136,17 @@ export class ComAtprotoTempNS {
     this._server = server
   }
 
+  addReservedHandle<AV extends AuthVerifier>(
+    cfg: ConfigOf<
+      AV,
+      ComAtprotoTempAddReservedHandle.Handler<ExtractAuth<AV>>,
+      ComAtprotoTempAddReservedHandle.HandlerReqCtx<ExtractAuth<AV>>
+    >,
+  ) {
+    const nsid = 'com.atproto.temp.addReservedHandle' // @ts-ignore
+    return this._server.xrpc.method(nsid, cfg)
+  }
+
   checkSignupQueue<AV extends AuthVerifier>(
     cfg: ConfigOf<
       AV,
diff --git a/packages/ozone/src/lexicon/lexicons.ts b/packages/ozone/src/lexicon/lexicons.ts
index af6d524641c..dbb06b20bd6 100644
--- a/packages/ozone/src/lexicon/lexicons.ts
+++ b/packages/ozone/src/lexicon/lexicons.ts
@@ -3959,6 +3959,35 @@ export const schemaDict = {
       },
     },
   },
+  ComAtprotoTempAddReservedHandle: {
+    lexicon: 1,
+    id: 'com.atproto.temp.addReservedHandle',
+    defs: {
+      main: {
+        type: 'procedure',
+        description: 'Add a handle to the set of reserved handles.',
+        input: {
+          encoding: 'application/json',
+          schema: {
+            type: 'object',
+            required: ['handle'],
+            properties: {
+              handle: {
+                type: 'string',
+              },
+            },
+          },
+        },
+        output: {
+          encoding: 'application/json',
+          schema: {
+            type: 'object',
+            properties: {},
+          },
+        },
+      },
+    },
+  },
   ComAtprotoTempCheckSignupQueue: {
     lexicon: 1,
     id: 'com.atproto.temp.checkSignupQueue',
@@ -13545,6 +13574,7 @@ export const ids = {
   ComAtprotoSyncNotifyOfUpdate: 'com.atproto.sync.notifyOfUpdate',
   ComAtprotoSyncRequestCrawl: 'com.atproto.sync.requestCrawl',
   ComAtprotoSyncSubscribeRepos: 'com.atproto.sync.subscribeRepos',
+  ComAtprotoTempAddReservedHandle: 'com.atproto.temp.addReservedHandle',
   ComAtprotoTempCheckSignupQueue: 'com.atproto.temp.checkSignupQueue',
   ComAtprotoTempFetchLabels: 'com.atproto.temp.fetchLabels',
   ComAtprotoTempRequestPhoneVerification:
diff --git a/packages/ozone/src/lexicon/types/com/atproto/temp/addReservedHandle.ts b/packages/ozone/src/lexicon/types/com/atproto/temp/addReservedHandle.ts
new file mode 100644
index 00000000000..b884cb08998
--- /dev/null
+++ b/packages/ozone/src/lexicon/types/com/atproto/temp/addReservedHandle.ts
@@ -0,0 +1,48 @@
+/**
+ * GENERATED CODE - DO NOT MODIFY
+ */
+import express from 'express'
+import { ValidationResult, BlobRef } from '@atproto/lexicon'
+import { lexicons } from '../../../../lexicons'
+import { isObj, hasProp } from '../../../../util'
+import { CID } from 'multiformats/cid'
+import { HandlerAuth, HandlerPipeThrough } from '@atproto/xrpc-server'
+
+export interface QueryParams {}
+
+export interface InputSchema {
+  handle: string
+  [k: string]: unknown
+}
+
+export interface OutputSchema {
+  [k: string]: unknown
+}
+
+export interface HandlerInput {
+  encoding: 'application/json'
+  body: InputSchema
+}
+
+export interface HandlerSuccess {
+  encoding: 'application/json'
+  body: OutputSchema
+  headers?: { [key: string]: string }
+}
+
+export interface HandlerError {
+  status: number
+  message?: string
+}
+
+export type HandlerOutput = HandlerError | HandlerSuccess | HandlerPipeThrough
+export type HandlerReqCtx<HA extends HandlerAuth = never> = {
+  auth: HA
+  params: QueryParams
+  input: HandlerInput
+  req: express.Request
+  res: express.Response
+}
+export type Handler<HA extends HandlerAuth = never> = (
+  ctx: HandlerReqCtx<HA>,
+) => Promise<HandlerOutput> | HandlerOutput
diff --git a/packages/pds/src/lexicon/index.ts b/packages/pds/src/lexicon/index.ts
index 7bcf0756578..b4c27f52018 100644
--- a/packages/pds/src/lexicon/index.ts
+++ b/packages/pds/src/lexicon/index.ts
@@ -80,6 +80,7 @@ import * as ComAtprotoSyncListRepos from './types/com/atproto/sync/listRepos'
 import * as ComAtprotoSyncNotifyOfUpdate from './types/com/atproto/sync/notifyOfUpdate'
 import * as ComAtprotoSyncRequestCrawl from './types/com/atproto/sync/requestCrawl'
 import * as ComAtprotoSyncSubscribeRepos from './types/com/atproto/sync/subscribeRepos'
+import * as ComAtprotoTempAddReservedHandle from './types/com/atproto/temp/addReservedHandle'
 import * as ComAtprotoTempCheckSignupQueue from './types/com/atproto/temp/checkSignupQueue'
 import * as ComAtprotoTempFetchLabels from './types/com/atproto/temp/fetchLabels'
 import * as ComAtprotoTempRequestPhoneVerification from './types/com/atproto/temp/requestPhoneVerification'
@@ -1135,6 +1136,17 @@ export class ComAtprotoTempNS {
     this._server = server
   }
 
+  addReservedHandle<AV extends AuthVerifier>(
+    cfg: ConfigOf<
+      AV,
+      ComAtprotoTempAddReservedHandle.Handler<ExtractAuth<AV>>,
+      ComAtprotoTempAddReservedHandle.HandlerReqCtx<ExtractAuth<AV>>
+    >,
+  ) {
+    const nsid = 'com.atproto.temp.addReservedHandle' // @ts-ignore
+    return this._server.xrpc.method(nsid, cfg)
+  }
+
   checkSignupQueue<AV extends AuthVerifier>(
     cfg: ConfigOf<
       AV,
diff --git a/packages/pds/src/lexicon/lexicons.ts b/packages/pds/src/lexicon/lexicons.ts
index af6d524641c..dbb06b20bd6 100644
--- a/packages/pds/src/lexicon/lexicons.ts
+++ b/packages/pds/src/lexicon/lexicons.ts
@@ -3959,6 +3959,35 @@ export const schemaDict = {
       },
     },
   },
+  ComAtprotoTempAddReservedHandle: {
+    lexicon: 1,
+    id: 'com.atproto.temp.addReservedHandle',
+    defs: {
+      main: {
+        type: 'procedure',
+        description: 'Add a handle to the set of reserved handles.',
+        input: {
+          encoding: 'application/json',
+          schema: {
+            type: 'object',
+            required: ['handle'],
+            properties: {
+              handle: {
+                type: 'string',
+              },
+            },
+          },
+        },
+        output: {
+          encoding: 'application/json',
+          schema: {
+            type: 'object',
+            properties: {},
+          },
+        },
+      },
+    },
+  },
   ComAtprotoTempCheckSignupQueue: {
     lexicon: 1,
     id: 'com.atproto.temp.checkSignupQueue',
@@ -13545,6 +13574,7 @@ export const ids = {
   ComAtprotoSyncNotifyOfUpdate: 'com.atproto.sync.notifyOfUpdate',
   ComAtprotoSyncRequestCrawl: 'com.atproto.sync.requestCrawl',
   ComAtprotoSyncSubscribeRepos: 'com.atproto.sync.subscribeRepos',
+  ComAtprotoTempAddReservedHandle: 'com.atproto.temp.addReservedHandle',
   ComAtprotoTempCheckSignupQueue: 'com.atproto.temp.checkSignupQueue',
   ComAtprotoTempFetchLabels: 'com.atproto.temp.fetchLabels',
   ComAtprotoTempRequestPhoneVerification:
diff --git a/packages/pds/src/lexicon/types/com/atproto/temp/addReservedHandle.ts b/packages/pds/src/lexicon/types/com/atproto/temp/addReservedHandle.ts
new file mode 100644
index 00000000000..b884cb08998
--- /dev/null
+++ b/packages/pds/src/lexicon/types/com/atproto/temp/addReservedHandle.ts
@@ -0,0 +1,48 @@
+/**
+ * GENERATED CODE - DO NOT MODIFY
+ */
+import express from 'express'
+import { ValidationResult, BlobRef } from '@atproto/lexicon'
+import { lexicons } from '../../../../lexicons'
+import { isObj, hasProp } from '../../../../util'
+import { CID } from 'multiformats/cid'
+import { HandlerAuth, HandlerPipeThrough } from '@atproto/xrpc-server'
+
+export interface QueryParams {}
+
+export interface InputSchema {
+  handle: string
+  [k: string]: unknown
+}
+
+export interface OutputSchema {
+  [k: string]: unknown
+}
+
+export interface HandlerInput {
+  encoding: 'application/json'
+  body: InputSchema
+}
+
+export interface HandlerSuccess {
+  encoding: 'application/json'
+  body: OutputSchema
+  headers?: { [key: string]: string }
+}
+
+export interface HandlerError {
+  status: number
+  message?: string
+}
+
+export type HandlerOutput = HandlerError | HandlerSuccess | HandlerPipeThrough
+export type HandlerReqCtx<HA extends HandlerAuth = never> = {
+  auth: HA
+  params: QueryParams
+  input: HandlerInput
+  req: express.Request
+  res: express.Response
+}
+export type Handler<HA extends HandlerAuth = never> = (
+  ctx: HandlerReqCtx<HA>,
+) => Promise<HandlerOutput> | HandlerOutput