diff --git a/README.md b/README.md
index 0833e31..bf506b0 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
-# @elydora/sdk
+# Elydora Node SDK
 
-Node.js/TypeScript SDK for the Elydora tamper-evident audit platform.
+Official Node.js/TypeScript SDK for the [Elydora](https://elydora.com) tamper-evident audit platform. Build cryptographically verifiable audit trails for AI agent operations.
 
 ## Installation
 
@@ -15,10 +15,10 @@ Requires Node.js 18+ (uses built-in `crypto` module with Ed25519 support).
 ```typescript
 import { ElydoraClient } from '@elydora/sdk';
 
-// 1. Authenticate
+// Authenticate
 const auth = await ElydoraClient.login('https://api.elydora.com', 'user@example.com', 'password');
 
-// 2. Create client
+// Create client
 const client = new ElydoraClient({
   orgId: auth.user.org_id,
   agentId: 'my-agent-id',
@@ -27,7 +27,7 @@ const client = new ElydoraClient({
 });
 client.setToken(auth.token);
 
-// 3. Create and submit an operation
+// Create and submit an operation
 const eor = client.createOperation({
   operationType: 'data.access',
   subject: { user_id: 'u-123', resource: 'patient-record' },
@@ -39,48 +39,180 @@ const { receipt } = await client.submitOperation(eor);
 console.log('Operation submitted:', receipt.operation_id);
 ```
 
+## CLI
+
+The SDK includes a CLI for installing audit hooks into AI coding agents.
+
+```bash
+npx elydora install \
+  --agent claudecode \
+  --org_id org-123 \
+  --agent_id agent-456 \
+  --private_key <key> \
+  --kid agent-456-key-v1
+```
+
+### Commands
+
+| Command | Description |
+|---------|-------------|
+| `elydora install` | Install Elydora audit hook for a coding agent |
+| `elydora uninstall` | Remove Elydora audit hook for a coding agent |
+| `elydora status` | Show installation status for all agents |
+| `elydora agents` | List supported coding agents |
+
+### Supported Agents
+
+| Agent | Key |
+|-------|-----|
+| Claude Code | `claudecode` |
+| Cursor | `cursor` |
+| Gemini CLI | `gemini` |
+| Augment Code | `augment` |
+| Kiro | `kiro` |
+| OpenCode | `opencode` |
+
 ## API Reference
 
-### Static Methods
+### Configuration
 
-- `ElydoraClient.register(baseUrl, email, password, displayName?, orgName?)` — Register a new user and organization
-- `ElydoraClient.login(baseUrl, email, password)` — Authenticate and receive a JWT
+```typescript
+const client = new ElydoraClient({
+  orgId: string,        // Organization ID
+  agentId: string,      // Agent ID
+  privateKey: string,   // Base64url-encoded Ed25519 seed
+  baseUrl?: string,     // API base URL (default: https://api.elydora.com)
+  ttlMs?: number,       // Operation TTL in ms (default: 30000)
+  maxRetries?: number,  // Max retries on transient failures (default: 3)
+  kid?: string,         // Key ID (default: {agentId}-key-v1)
+});
+```
 
-### Instance Methods
+### Authentication
 
-#### Agent Management
-- `registerAgent(request)` — Register a new agent with public keys
-- `getAgent(agentId)` — Retrieve agent details
-- `freezeAgent(agentId, reason)` — Freeze an agent
-- `revokeKey(agentId, kid, reason)` — Revoke an agent key
+```typescript
+// Register a new user and organization
+const reg = await ElydoraClient.register(baseUrl, email, password, displayName?, orgName?);
 
-#### Operations
-- `createOperation(params)` — Construct and sign an EOR locally (synchronous)
-- `submitOperation(eor)` — Submit a signed EOR to the API
-- `getOperation(operationId)` — Retrieve an operation
-- `verifyOperation(operationId)` — Verify operation integrity
+// Login and receive a JWT
+const auth = await ElydoraClient.login(baseUrl, email, password);
 
-#### Audit
-- `queryAudit(params)` — Query the audit log
+// Set token on client
+client.setToken(auth.token);
+```
 
-#### Epochs
-- `listEpochs()` — List all epochs
-- `getEpoch(epochId)` — Retrieve an epoch
+### Operations
 
-#### Exports
-- `createExport(params)` — Create a compliance export
-- `listExports()` — List all exports
-- `getExport(exportId)` — Retrieve export status
+```typescript
+// Create a signed EOR locally (synchronous, no network call)
+const eor = client.createOperation({
+  operationType: 'inference',
+  subject: { model: 'gpt-4' },
+  action: { type: 'completion' },
+  payload: { prompt: 'Hello' },
+});
 
-#### JWKS
-- `getJWKS()` — Retrieve platform public keys
+// Submit to API
+const { receipt } = await client.submitOperation(eor);
 
-## Cryptographic Details
+// Retrieve an operation
+const op = await client.getOperation(operationId);
 
-- **Ed25519**: Signs operations using Node.js built-in `crypto` module
-- **Chain hashing**: `SHA-256(prev_chain_hash | payload_hash | operation_id | issued_at)`
-- **JCS**: RFC 8785 JSON Canonicalization Scheme for deterministic serialization
-- **Base64url**: RFC 4648 section 5, no padding
+// Verify integrity (signature, chain, receipt, merkle)
+const result = await client.verifyOperation(operationId);
+```
+
+### Agent Management
+
+```typescript
+// Register a new agent
+const agent = await client.registerAgent({
+  agent_id: 'my-agent',
+  display_name: 'My Agent',
+  responsible_entity: 'team@example.com',
+  keys: [{ kid: 'key-v1', public_key: '<base64url>', algorithm: 'ed25519' }],
+});
+
+// Get agent details
+const details = await client.getAgent(agentId);
+
+// Freeze an agent
+await client.freezeAgent(agentId, 'security review');
+
+// Revoke a key
+await client.revokeKey(agentId, kid, 'key rotation');
+```
+
+### Audit
+
+```typescript
+const results = await client.queryAudit({
+  agent_id: 'agent-123',
+  operation_type: 'inference',
+  start_time: Date.now() - 86400000,
+  end_time: Date.now(),
+  limit: 50,
+});
+```
+
+### Epochs
+
+```typescript
+const { epochs } = await client.listEpochs();
+const { epoch } = await client.getEpoch(epochId);
+```
+
+### Exports
+
+```typescript
+const { export: exp } = await client.createExport({
+  start_time: Date.now() - 86400000,
+  end_time: Date.now(),
+  format: 'json',
+});
+
+const { exports } = await client.listExports();
+const { export: detail, download_url } = await client.getExport(exportId);
+```
+
+### JWKS
+
+```typescript
+const { keys } = await client.getJWKS();
+```
+
+### Crypto Utilities
+
+The SDK exports low-level cryptographic primitives for advanced use:
+
+```typescript
+import {
+  jcsCanonicalise,     // RFC 8785 JSON Canonicalization
+  sha256Base64url,     // SHA-256 hash as base64url
+  computeChainHash,    // Chain hash computation
+  computePayloadHash,  // Payload hash computation
+  signEd25519,         // Ed25519 signing
+  derivePublicKey,     // Derive public key from private seed
+  ZERO_CHAIN_HASH,     // Genesis chain hash constant
+} from '@elydora/sdk';
+```
+
+## Error Handling
+
+```typescript
+import { ElydoraError } from '@elydora/sdk';
+
+try {
+  await client.submitOperation(eor);
+} catch (err) {
+  if (err instanceof ElydoraError) {
+    console.error(err.code);       // e.g. 'INVALID_SIGNATURE'
+    console.error(err.message);    // Human-readable message
+    console.error(err.statusCode); // HTTP status code
+    console.error(err.requestId);  // Request ID for support
+  }
+}
+```
 
 ## License