diff --git a/packages/auth/src/index.ts b/packages/auth/src/index.ts
index fa22f1eb..20ff8d0f 100644
--- a/packages/auth/src/index.ts
+++ b/packages/auth/src/index.ts
@@ -20,7 +20,7 @@ export type * from './team/context.js'
 export type * from './device/types.js'
 export type * from './invitation/types.js'
 export type * from './lockbox/types.js'
-export type * from './role/types.js'
+export * from './role/types.js'
 export type * from './server/types.js'
 export type * from './team/types.js'
 
diff --git a/packages/auth/src/role/types.ts b/packages/auth/src/role/types.ts
index 5f4c02e4..4df33664 100644
--- a/packages/auth/src/role/types.ts
+++ b/packages/auth/src/role/types.ts
@@ -1,4 +1,14 @@
-export type PermissionsMap = Record<string, boolean>
+export enum Permission {
+  MODIFIABLE_MEMBERSHIP = 'modifiable-membership',
+}
+
+export interface ModifiableMembershipPermissionConfig {
+  memberIds: string[]
+}
+
+export type PermissionsMap = { 
+  [Permission.MODIFIABLE_MEMBERSHIP]?: true | ModifiableMembershipPermissionConfig 
+}
 
 export type Role = {
   roleName: string
diff --git a/packages/auth/src/team/Team.ts b/packages/auth/src/team/Team.ts
index 2c555fd2..c023f9df 100644
--- a/packages/auth/src/team/Team.ts
+++ b/packages/auth/src/team/Team.ts
@@ -28,7 +28,7 @@ import * as invitations from 'invitation/index.js'
 import { type ProofOfInvitation } from 'invitation/index.js'
 import { normalize } from 'invitation/normalize.js'
 import * as lockbox from 'lockbox/index.js'
-import { AddRoleInput, ADMIN, type Role } from 'role/index.js'
+import { AddRoleInput, ADMIN, Permission, type Role } from 'role/index.js'
 import { castServer } from 'server/castServer.js'
 import { type Host, type Server } from 'server/types.js'
 import { type LocalUserContext } from 'team/context.js'
@@ -352,8 +352,9 @@ export class Team extends EventEmitter<TeamEvents> {
     }
 
     // Post the role to the graph
+    const eventType = role.permissions && role.permissions[Permission.MODIFIABLE_MEMBERSHIP] === true ? 'ADD_ROLE' : 'ADD_STATIC_ROLE'
     this.dispatch({
-      type: 'ADD_ROLE',
+      type: eventType,
       payload: { ...(role as Role), lockboxes: lockboxes },
     })
 
@@ -374,8 +375,10 @@ export class Team extends EventEmitter<TeamEvents> {
 
   /** Dispatch the add role action */
   private _dispatchAddMemberRole(userId: string, roleName: string, lockboxes: lockbox.Lockbox[]) {
+    const role = select.role(this.state, roleName)
+    const eventType = role.permissions && role.permissions[Permission.MODIFIABLE_MEMBERSHIP] === true ? 'ADD_MEMBER_ROLE' : 'ADD_MEMBER_STATIC_ROLE'
     this.dispatch({
-      type: 'ADD_MEMBER_ROLE',
+      type: eventType,
       payload: { userId, roleName, lockboxes },
     })
   }
diff --git a/packages/auth/src/team/isAdminOnlyAction.ts b/packages/auth/src/team/isAdminOnlyAction.ts
index 9c6b4aba..566da6bd 100644
--- a/packages/auth/src/team/isAdminOnlyAction.ts
+++ b/packages/auth/src/team/isAdminOnlyAction.ts
@@ -10,8 +10,10 @@ export const isAdminOnlyAction = (action: TeamLinkBody) => {
     'CHANGE_SERVER_KEYS',
     'ADMIT_MEMBER',
     'ADMIT_DEVICE',
-    'ADD_MEMBER_ROLE',
     'ADD_ROLE',
+    'ADD_MEMBER_ROLE',
+    'ADD_STATIC_ROLE',
+    'ADD_MEMBER_STATIC_ROLE',
     'SET_METADATA',
   ]
 
diff --git a/packages/auth/src/team/membershipResolver.ts b/packages/auth/src/team/membershipResolver.ts
index c8091979..b2d392d7 100644
--- a/packages/auth/src/team/membershipResolver.ts
+++ b/packages/auth/src/team/membershipResolver.ts
@@ -14,6 +14,7 @@ import {
   type TeamLink,
   type TeamGraph,
   type AdmitMemberAction,
+  type AddMemberStaticRoleAction,
 } from 'team/types.js'
 import { arraysAreEqual } from 'util/arraysAreEqual.js'
 
@@ -123,7 +124,7 @@ const leastSenior = (chain: TeamGraph, userNames: string[]) =>
   userNames.sort(bySeniority(chain)).pop()!
 
 const isAddAction = (link: TeamLink): link is AddActionLink =>
-  ['ADD_MEMBER', 'ADD_MEMBER_ROLE', 'ADMIT_MEMBER'].includes(link.body.type)
+  ['ADD_MEMBER', 'ADD_MEMBER_ROLE', 'ADD_MEMBER_STATIC_ROLE', 'ADMIT_MEMBER', ].includes(link.body.type)
 
 const isRemovalAction = (link: TeamLink): boolean => link.body.type === 'REMOVE_MEMBER'
 
@@ -168,6 +169,11 @@ const addedUserId = (link: AddActionLink): string => {
       return addAction.payload.userId
     }
 
+    case 'ADD_MEMBER_STATIC_ROLE': {
+      const addAction = link.body
+      return addAction.payload.userId
+    }
+
     case 'ADMIT_MEMBER': {
       const addAction = link.body
       return addAction.payload.memberKeys.name
@@ -185,4 +191,4 @@ const usesInvitation = (invitation: Invitation) => (l: TeamLink) =>
   l.body.payload.id === invitation.id
 
 type RemoveActionLink = Link<RemoveMemberAction | RemoveMemberRoleAction, TeamContext>
-type AddActionLink = Link<AddMemberAction | AddMemberRoleAction | AdmitMemberAction, TeamContext>
+type AddActionLink = Link<AddMemberAction | AddMemberRoleAction | AddMemberStaticRoleAction | AdmitMemberAction, TeamContext>
diff --git a/packages/auth/src/team/reducer.ts b/packages/auth/src/team/reducer.ts
index c28d408b..b337127e 100644
--- a/packages/auth/src/team/reducer.ts
+++ b/packages/auth/src/team/reducer.ts
@@ -1,5 +1,5 @@
 import { ROOT, type Reducer } from '@localfirst/crdx'
-import { ADMIN } from 'role/index.js'
+import { ADMIN, Permission, type Role } from 'role/index.js'
 import { clone, composeTransforms } from 'util/index.js'
 import { invalidLinkReducer } from './invalidLinkReducer.js'
 import { setHead } from './setHead.js'
@@ -128,6 +128,20 @@ const getTransforms = (action: TeamAction): Transform[] => {
       ]
     }
 
+    case 'ADD_STATIC_ROLE': {
+      const newRole = action.payload
+      return [
+        addRole(newRole), // Add this role to the team
+      ]
+    }
+
+    case 'ADD_MEMBER_STATIC_ROLE': {
+      const { userId, roleName } = action.payload
+      return [
+        ...addMemberRoles(userId, [roleName]), // Add this role to the member's list of roles
+      ]
+    }
+
     case 'ADD_DEVICE': {
       const { device } = action.payload
       return [
diff --git a/packages/auth/src/team/types.ts b/packages/auth/src/team/types.ts
index b3882179..7d24b6d8 100644
--- a/packages/auth/src/team/types.ts
+++ b/packages/auth/src/team/types.ts
@@ -16,7 +16,7 @@ import type { Client, LocalContext } from 'team/context.js'
 import type { Device } from 'device/index.js'
 import type { Invitation, InvitationState } from 'invitation/types.js'
 import type { Lockbox } from 'lockbox/index.js'
-import type { PermissionsMap, Role } from 'role/index.js'
+import type { PermissionsMap, Role, Permission } from 'role/index.js'
 import type { Host, Server } from 'server/index.js'
 import type { ValidationResult } from 'util/index.js'
 import { Logger, SharedLogger } from '@localfirst/shared'
@@ -120,6 +120,11 @@ export type AddRoleAction = {
   payload: BasePayload & Role
 }
 
+export type AddStaticRoleAction = {
+  type: 'ADD_STATIC_ROLE'
+  payload: BasePayload & Role
+}
+
 export type RemoveRoleAction = {
   type: 'REMOVE_ROLE'
   payload: BasePayload & {
@@ -136,6 +141,15 @@ export type AddMemberRoleAction = {
   }
 }
 
+export type AddMemberStaticRoleAction = {
+  type: 'ADD_MEMBER_STATIC_ROLE'
+  payload: BasePayload & {
+    userId: string
+    roleName: string
+    permissions?: PermissionsMap
+  }
+}
+
 export type RemoveMemberRoleAction = {
   type: 'REMOVE_MEMBER_ROLE'
   payload: BasePayload & {
@@ -269,6 +283,8 @@ export type TeamAction =
   | RemoveDeviceAction
   | RemoveRoleAction
   | RemoveMemberRoleAction
+  | AddStaticRoleAction
+  | AddMemberStaticRoleAction
   | InviteMemberAction
   | InviteDeviceAction
   | RevokeInvitationAction
diff --git a/packages/auth/src/team/validate.ts b/packages/auth/src/team/validate.ts
index 6fd17114..60cf0d07 100644
--- a/packages/auth/src/team/validate.ts
+++ b/packages/auth/src/team/validate.ts
@@ -11,6 +11,7 @@ import {
   type TeamStateValidatorSet,
   type ValidationArgs,
 } from './types.js'
+import { Permission } from 'role/types.js'
 
 export const validate: TeamStateValidator = (previousState: TeamState, link: TeamLink, extendableLogger?: Logger) => {
   const logger = extendableLogger != null ? extendableLogger.extend('validate') : new Logger({ moduleName: 'auth:validate' })
@@ -134,6 +135,45 @@ const validators: TeamStateValidatorSet = {
     }
     return VALID
   },
+
+  /** Check that members not listed in the permissions map for a role aren't added */
+  cantModifyStaticRolesWithAddMemberRole(previousState: TeamState, link: TeamLink, extendableLogger: Logger) {
+    const logger = extendableLogger.extend('cantModifyStaticRolesWithAddMemberRole')
+    if (link.body.type === 'ADD_MEMBER_ROLE') {
+      const { userId: assigningUserId } = link.body
+      const { userId, roleName } = link.body.payload
+      const role = select.role(previousState, roleName)
+      if (role.permissions == null) {
+        return VALID
+      }
+      if (role.permissions[Permission.MODIFIABLE_MEMBERSHIP] == null || role.permissions[Permission.MODIFIABLE_MEMBERSHIP] === true) {
+        return VALID
+      }
+      return fail(`User ${assigningUserId} attempted to assign role ${roleName} to member ${userId} using ADD_MEMBER_ROLE but the role is static`, previousState, link, logger)
+    }
+    return VALID
+  },
+
+  /** Check that members not listed in the permissions map for a role aren't added */
+  cantAddNewMembersToStaticRole(previousState: TeamState, link: TeamLink, extendableLogger: Logger) {
+    const logger = extendableLogger.extend('cantAddNewMembersToStaticRole')
+    if (link.body.type === 'ADD_MEMBER_STATIC_ROLE') {
+      const { userId: assigningUserId } = link.body
+      const { userId, roleName } = link.body.payload
+      const role = select.role(previousState, roleName)
+      if (role.permissions == null) {
+        return fail(`User ${assigningUserId} attempted to assign role ${roleName} to member ${userId} using ADD_MEMBER_STATIC_ROLE but the role has no permissions`, previousState, link, logger)
+      }
+      if (role.permissions[Permission.MODIFIABLE_MEMBERSHIP] == null || role.permissions[Permission.MODIFIABLE_MEMBERSHIP] === true) {
+        return fail(`User ${assigningUserId} attempted to assign role ${roleName} to member ${userId} using ADD_MEMBER_STATIC_ROLE but the role is not static`, previousState, link, logger)
+      }
+      if (role.permissions[Permission.MODIFIABLE_MEMBERSHIP].memberIds.includes(userId)) {
+        return VALID
+      }
+      return fail(`User ${assigningUserId} attempted to assign role ${roleName} to member ${userId} not specified in role's permissions`, previousState, link, logger)
+    }
+    return VALID
+  },
 }
 
 const fail = (message: string, previousState: TeamState, link: TeamLink, extendableLogger: Logger) => {
diff --git a/packages/auth/src/util/actionFingerprint.ts b/packages/auth/src/util/actionFingerprint.ts
index 980229d6..20b42409 100644
--- a/packages/auth/src/util/actionFingerprint.ts
+++ b/packages/auth/src/util/actionFingerprint.ts
@@ -15,11 +15,13 @@ export const actionFingerprint = (link: TeamLink) => {
         return action.payload.userId
       }
 
-      case 'ADD_ROLE': {
+      case 'ADD_ROLE': 
+      case 'ADD_STATIC_ROLE': {
         return action.payload.roleName
       }
 
       case 'ADD_MEMBER_ROLE':
+      case 'ADD_MEMBER_STATIC_ROLE':
       case 'REMOVE_MEMBER_ROLE': {
         return `${action.payload.roleName}:${action.payload.userId}`
       }