diff --git a/packages/shared/src/api.ts b/packages/shared/src/api.ts
index fbd59c84..e86fc6bf 100644
--- a/packages/shared/src/api.ts
+++ b/packages/shared/src/api.ts
@@ -11,4 +11,5 @@ export const API = {
   costs: `${API_PREFIX}/costs`,
   activity: `${API_PREFIX}/activity`,
   dashboard: `${API_PREFIX}/dashboard`,
+  sidebarBadges: `${API_PREFIX}/sidebar-badges`,
 } as const;
diff --git a/packages/shared/src/index.ts b/packages/shared/src/index.ts
index 84d30996..500d4ddf 100644
--- a/packages/shared/src/index.ts
+++ b/packages/shared/src/index.ts
@@ -38,6 +38,7 @@ export type {
   Agent,
   AgentPermissions,
   AgentKeyCreated,
+  AgentConfigRevision,
   Project,
   Issue,
   IssueComment,
@@ -46,6 +47,7 @@ export type {
   ApprovalComment,
   CostEvent,
   CostSummary,
+  CostByAgent,
   HeartbeatRun,
   HeartbeatRunEvent,
   AgentRuntimeState,
@@ -53,6 +55,7 @@ export type {
   LiveEvent,
   DashboardSummary,
   ActivityEvent,
+  SidebarBadges,
 } from "./types/index.js";
 
 export {
@@ -61,12 +64,14 @@ export {
   type CreateCompany,
   type UpdateCompany,
   createAgentSchema,
+  createAgentHireSchema,
   updateAgentSchema,
   createAgentKeySchema,
   wakeAgentSchema,
   agentPermissionsSchema,
   updateAgentPermissionsSchema,
   type CreateAgent,
+  type CreateAgentHire,
   type UpdateAgent,
   type CreateAgentKey,
   type WakeAgent,
@@ -79,10 +84,12 @@ export {
   updateIssueSchema,
   checkoutIssueSchema,
   addIssueCommentSchema,
+  linkIssueApprovalSchema,
   type CreateIssue,
   type UpdateIssue,
   type CheckoutIssue,
   type AddIssueComment,
+  type LinkIssueApproval,
   createGoalSchema,
   updateGoalSchema,
   type CreateGoal,
diff --git a/packages/shared/src/types/agent.ts b/packages/shared/src/types/agent.ts
index 7f4daefe..816d6cc0 100644
--- a/packages/shared/src/types/agent.ts
+++ b/packages/shared/src/types/agent.ts
@@ -35,3 +35,17 @@ export interface AgentKeyCreated {
   token: string;
   createdAt: Date;
 }
+
+export interface AgentConfigRevision {
+  id: string;
+  companyId: string;
+  agentId: string;
+  createdByAgentId: string | null;
+  createdByUserId: string | null;
+  source: string;
+  rolledBackFromRevisionId: string | null;
+  changedKeys: string[];
+  beforeConfig: Record<string, unknown>;
+  afterConfig: Record<string, unknown>;
+  createdAt: Date;
+}
diff --git a/packages/shared/src/types/cost.ts b/packages/shared/src/types/cost.ts
index 73ac2db7..303745ca 100644
--- a/packages/shared/src/types/cost.ts
+++ b/packages/shared/src/types/cost.ts
@@ -17,7 +17,16 @@ export interface CostEvent {
 
 export interface CostSummary {
   companyId: string;
-  monthSpendCents: number;
-  monthBudgetCents: number;
-  monthUtilizationPercent: number;
+  spendCents: number;
+  budgetCents: number;
+  utilizationPercent: number;
+}
+
+export interface CostByAgent {
+  agentId: string;
+  agentName: string | null;
+  agentStatus: string | null;
+  costCents: number;
+  inputTokens: number;
+  outputTokens: number;
 }
diff --git a/packages/shared/src/types/index.ts b/packages/shared/src/types/index.ts
index 4e404b5f..4d546867 100644
--- a/packages/shared/src/types/index.ts
+++ b/packages/shared/src/types/index.ts
@@ -1,10 +1,10 @@
 export type { Company } from "./company.js";
-export type { Agent, AgentKeyCreated } from "./agent.js";
+export type { Agent, AgentPermissions, AgentKeyCreated, AgentConfigRevision } from "./agent.js";
 export type { Project } from "./project.js";
 export type { Issue, IssueComment, IssueAncestor } from "./issue.js";
 export type { Goal } from "./goal.js";
 export type { Approval, ApprovalComment } from "./approval.js";
-export type { CostEvent, CostSummary } from "./cost.js";
+export type { CostEvent, CostSummary, CostByAgent } from "./cost.js";
 export type {
   HeartbeatRun,
   HeartbeatRunEvent,
@@ -14,3 +14,4 @@ export type {
 export type { LiveEvent } from "./live.js";
 export type { DashboardSummary } from "./dashboard.js";
 export type { ActivityEvent } from "./activity.js";
+export type { SidebarBadges } from "./sidebar-badges.js";
diff --git a/packages/shared/src/types/sidebar-badges.ts b/packages/shared/src/types/sidebar-badges.ts
new file mode 100644
index 00000000..18c0610b
--- /dev/null
+++ b/packages/shared/src/types/sidebar-badges.ts
@@ -0,0 +1,4 @@
+export interface SidebarBadges {
+  inbox: number;
+  approvals: number;
+}
diff --git a/packages/shared/src/validators/agent.ts b/packages/shared/src/validators/agent.ts
index 10d2bd04..8665538c 100644
--- a/packages/shared/src/validators/agent.ts
+++ b/packages/shared/src/validators/agent.ts
@@ -25,9 +25,18 @@ export const createAgentSchema = z.object({
 
 export type CreateAgent = z.infer<typeof createAgentSchema>;
 
+export const createAgentHireSchema = createAgentSchema.extend({
+  sourceIssueId: z.string().uuid().optional().nullable(),
+  sourceIssueIds: z.array(z.string().uuid()).optional(),
+});
+
+export type CreateAgentHire = z.infer<typeof createAgentHireSchema>;
+
 export const updateAgentSchema = createAgentSchema
+  .omit({ permissions: true })
   .partial()
   .extend({
+    permissions: z.never().optional(),
     status: z.enum(AGENT_STATUSES).optional(),
     spentMonthlyCents: z.number().int().nonnegative().optional(),
   });
diff --git a/packages/shared/src/validators/approval.ts b/packages/shared/src/validators/approval.ts
index f9228000..d6a6cf0d 100644
--- a/packages/shared/src/validators/approval.ts
+++ b/packages/shared/src/validators/approval.ts
@@ -5,6 +5,7 @@ export const createApprovalSchema = z.object({
   type: z.enum(APPROVAL_TYPES),
   requestedByAgentId: z.string().uuid().optional().nullable(),
   payload: z.record(z.unknown()),
+  issueIds: z.array(z.string().uuid()).optional(),
 });
 
 export type CreateApproval = z.infer<typeof createApprovalSchema>;
diff --git a/packages/shared/src/validators/index.ts b/packages/shared/src/validators/index.ts
index 7e498f80..40589392 100644
--- a/packages/shared/src/validators/index.ts
+++ b/packages/shared/src/validators/index.ts
@@ -7,12 +7,14 @@ export {
 
 export {
   createAgentSchema,
+  createAgentHireSchema,
   updateAgentSchema,
   createAgentKeySchema,
   wakeAgentSchema,
   agentPermissionsSchema,
   updateAgentPermissionsSchema,
   type CreateAgent,
+  type CreateAgentHire,
   type UpdateAgent,
   type CreateAgentKey,
   type WakeAgent,
@@ -31,10 +33,12 @@ export {
   updateIssueSchema,
   checkoutIssueSchema,
   addIssueCommentSchema,
+  linkIssueApprovalSchema,
   type CreateIssue,
   type UpdateIssue,
   type CheckoutIssue,
   type AddIssueComment,
+  type LinkIssueApproval,
 } from "./issue.js";
 
 export {
diff --git a/packages/shared/src/validators/issue.ts b/packages/shared/src/validators/issue.ts
index 2776b742..ef373dc1 100644
--- a/packages/shared/src/validators/issue.ts
+++ b/packages/shared/src/validators/issue.ts
@@ -35,3 +35,9 @@ export const addIssueCommentSchema = z.object({
 });
 
 export type AddIssueComment = z.infer<typeof addIssueCommentSchema>;
+
+export const linkIssueApprovalSchema = z.object({
+  approvalId: z.string().uuid(),
+});
+
+export type LinkIssueApproval = z.infer<typeof linkIssueApprovalSchema>;