diff --git a/CHANGELOG.md b/CHANGELOG.md
index 478b4c0..b63bf21 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -44,6 +44,7 @@ All notable changes to the Wraith Protocol SDK will be documented in this file.
 
 ### Fixed
 
+- **Companion packages import the agent API from `@wraith-protocol/sdk-agent`** (issue #249): `@wraith-protocol/sdk-vue`, `@wraith-protocol/sdk-svelte` and `@wraith-protocol/sdk-solid` imported `Wraith`, `WraithAgent` and `Chain` from the core `@wraith-protocol/sdk`, but #193 moved those exports to `@wraith-protocol/sdk-agent`, so importing any of the three on the server threw `SyntaxError: The requested module '@wraith-protocol/sdk' does not provide an export named 'Chain'` before any code ran. Each companion now imports those names from `@wraith-protocol/sdk-agent` and declares it as a workspace dependency, and the framework SSR import smoke check no longer lists the three as known failures.
 - **Stellar `findStrictReceivePath` reads and validates real Horizon responses** (issue #236): the function now reads paths from Horizon's `_embedded.records` envelope instead of expecting a bare array, and sends the query parameters Horizon accepts (`source_assets` with `destination_asset_type` / `_code` / `_issuer`; the old `destination_asset` and dummy `source_account` made every live request fail with HTTP 400).
   - Every record is validated before use: amounts, asset type / code / issuer, that the source and destination assets and `destination_amount` match the request, and a path of at most 5 hops. The body is read as a stream and abandoned past 256 KiB; responses over 100 records are rejected. The cheapest valid record is returned. An invalid `destAmount` now throws before the request, and the request uses the Horizon client's default timeouts (`RPCTimeoutError`).
   - New `HorizonResponseError` (`WRAITH/NETWORK/HORIZON_RESPONSE`), exported from the package root, carries the URL and the rejected field. A non-2xx status now throws `RPCRequestError` instead of a plain `Error`.
diff --git a/package.json b/package.json
index 51b9a50..7bbd297 100644
--- a/package.json
+++ b/package.json
@@ -49,7 +49,7 @@
     "node": ">=20"
   },
   "scripts": {
-    "build": "tsup",
+    "build": "tsup && pnpm --filter @wraith-protocol/sdk-agent build",
     "test": "vitest run --exclude 'test/chains/stellar/properties.test.ts' --exclude 'test/leaks/scan-leak.test.ts' --exclude 'test/leaks/heap-snapshot.test.ts' && pnpm --filter @wraith-protocol/sdk-svelte test",
     "docs": "typedoc",
     "test:exports": "node test/smoke/run.mjs",
diff --git a/packages/sdk-solid/package.json b/packages/sdk-solid/package.json
index a5231f6..5d4e595 100644
--- a/packages/sdk-solid/package.json
+++ b/packages/sdk-solid/package.json
@@ -23,6 +23,7 @@
   },
   "dependencies": {
     "@wraith-protocol/sdk": "workspace:*",
+    "@wraith-protocol/sdk-agent": "workspace:*",
     "solid-js": "^1.9.0"
   },
   "peerDependencies": {
diff --git a/packages/sdk-solid/src/primitives/createActivity.ts b/packages/sdk-solid/src/primitives/createActivity.ts
index 048c186..99f5fe7 100644
--- a/packages/sdk-solid/src/primitives/createActivity.ts
+++ b/packages/sdk-solid/src/primitives/createActivity.ts
@@ -1,6 +1,6 @@
 import { createSignal } from 'solid-js';
-import { Wraith, WraithAgent, Chain } from '@wraith-protocol/sdk';
-import type { WraithConfig, AgentConfig, AgentInfo, ChatResponse } from '@wraith-protocol/sdk';
+import { Wraith, WraithAgent, Chain } from '@wraith-protocol/sdk-agent';
+import type { WraithConfig, AgentConfig, AgentInfo, ChatResponse } from '@wraith-protocol/sdk-agent';
 
 /**
  * Solid primitive for managing Wraith agent activity (chat, balance, agent lifecycle).
diff --git a/packages/sdk-solid/test/createActivity.test.ts b/packages/sdk-solid/test/createActivity.test.ts
index b2c6db5..0b058e6 100644
--- a/packages/sdk-solid/test/createActivity.test.ts
+++ b/packages/sdk-solid/test/createActivity.test.ts
@@ -23,7 +23,7 @@ const mockClient = vi.hoisted(() => ({
   listAgents: vi.fn().mockResolvedValue([mockAgentInfo]),
 }));
 
-vi.mock('@wraith-protocol/sdk', () => ({
+vi.mock('@wraith-protocol/sdk-agent', () => ({
   Wraith: vi.fn().mockImplementation(() => mockClient),
   WraithAgent: vi.fn(),
   Chain: {
@@ -34,7 +34,7 @@ vi.mock('@wraith-protocol/sdk', () => ({
 }));
 
 // Grab mocked references once (safe because vi.mock hoists before imports)
-import { Wraith as MockWraith } from '@wraith-protocol/sdk';
+import { Wraith as MockWraith } from '@wraith-protocol/sdk-agent';
 
 describe('createActivity', () => {
   beforeEach(() => {
diff --git a/packages/sdk-solid/tsup.config.ts b/packages/sdk-solid/tsup.config.ts
index d238c1f..8ddcd2a 100644
--- a/packages/sdk-solid/tsup.config.ts
+++ b/packages/sdk-solid/tsup.config.ts
@@ -9,5 +9,5 @@ export default defineConfig({
   splitting: true,
   clean: true,
   treeshake: true,
-  external: ['solid-js', '@wraith-protocol/sdk'],
+  external: ['solid-js', '@wraith-protocol/sdk', '@wraith-protocol/sdk-agent'],
 });
diff --git a/packages/sdk-svelte/package.json b/packages/sdk-svelte/package.json
index 8e3c9ab..92a9e2d 100644
--- a/packages/sdk-svelte/package.json
+++ b/packages/sdk-svelte/package.json
@@ -22,7 +22,8 @@
     "clean": "rm -rf dist"
   },
   "dependencies": {
-    "@wraith-protocol/sdk": "workspace:*"
+    "@wraith-protocol/sdk": "workspace:*",
+    "@wraith-protocol/sdk-agent": "workspace:*"
   },
   "peerDependencies": {
     "@stellar/stellar-sdk": "^13.1.0",
diff --git a/packages/sdk-svelte/src/primitives/useWraith.ts b/packages/sdk-svelte/src/primitives/useWraith.ts
index 35cddc7..e77c232 100644
--- a/packages/sdk-svelte/src/primitives/useWraith.ts
+++ b/packages/sdk-svelte/src/primitives/useWraith.ts
@@ -1,6 +1,6 @@
 import { writable, readonly, get } from 'svelte/store';
-import { Wraith, WraithAgent, Chain } from '@wraith-protocol/sdk';
-import type { WraithConfig, AgentConfig, AgentInfo, ChatResponse } from '@wraith-protocol/sdk';
+import { Wraith, WraithAgent, Chain } from '@wraith-protocol/sdk-agent';
+import type { WraithConfig, AgentConfig, AgentInfo, ChatResponse } from '@wraith-protocol/sdk-agent';
 
 export function useWraith(config?: WraithConfig) {
   const _client = writable<Wraith | null>(null);
diff --git a/packages/sdk-svelte/test/useWraith.test.ts b/packages/sdk-svelte/test/useWraith.test.ts
index 6210b5c..50df95d 100644
--- a/packages/sdk-svelte/test/useWraith.test.ts
+++ b/packages/sdk-svelte/test/useWraith.test.ts
@@ -1,6 +1,6 @@
 import { describe, it, expect, vi, beforeEach } from 'vitest';
 
-vi.mock('@wraith-protocol/sdk', () => {
+vi.mock('@wraith-protocol/sdk-agent', () => {
   const mockAgent = {
     info: {
       id: 'agent-1',
diff --git a/packages/sdk-svelte/tsup.config.ts b/packages/sdk-svelte/tsup.config.ts
index ab927b6..3390cab 100644
--- a/packages/sdk-svelte/tsup.config.ts
+++ b/packages/sdk-svelte/tsup.config.ts
@@ -9,5 +9,5 @@ export default defineConfig({
   splitting: true,
   clean: true,
   treeshake: true,
-  external: ['svelte', '@wraith-protocol/sdk'],
+  external: ['svelte', '@wraith-protocol/sdk', '@wraith-protocol/sdk-agent'],
 });
diff --git a/packages/sdk-vue/package.json b/packages/sdk-vue/package.json
index 25642f1..9cf6c49 100644
--- a/packages/sdk-vue/package.json
+++ b/packages/sdk-vue/package.json
@@ -23,6 +23,7 @@
   },
   "dependencies": {
     "@wraith-protocol/sdk": "workspace:*",
+    "@wraith-protocol/sdk-agent": "workspace:*",
     "vue": "^3.5.0"
   },
   "devDependencies": {
diff --git a/packages/sdk-vue/src/composables/useWraith.ts b/packages/sdk-vue/src/composables/useWraith.ts
index b7b5956..dc59a93 100644
--- a/packages/sdk-vue/src/composables/useWraith.ts
+++ b/packages/sdk-vue/src/composables/useWraith.ts
@@ -7,7 +7,7 @@ import {
   type AgentConfig,
   type AgentInfo,
   type ChatResponse,
-} from '@wraith-protocol/sdk';
+} from '@wraith-protocol/sdk-agent';
 
 export function useWraith(config?: WraithConfig) {
   const client: Ref<Wraith | null> = ref(null);
diff --git a/packages/sdk-vue/test/useWraith.test.ts b/packages/sdk-vue/test/useWraith.test.ts
index 961eabf..da86bff 100644
--- a/packages/sdk-vue/test/useWraith.test.ts
+++ b/packages/sdk-vue/test/useWraith.test.ts
@@ -1,7 +1,7 @@
 import { describe, it, expect, vi, beforeEach } from 'vitest';
 import { useWraith } from '../src/composables/useWraith';
 
-vi.mock('@wraith-protocol/sdk', () => {
+vi.mock('@wraith-protocol/sdk-agent', () => {
   const mockAgent = {
     info: { id: 'agent-1', name: 'test-agent', chains: [], addresses: {}, metaAddresses: {} },
     chat: vi.fn(),
diff --git a/packages/sdk-vue/tsup.config.ts b/packages/sdk-vue/tsup.config.ts
index 2b5a8ab..84619fd 100644
--- a/packages/sdk-vue/tsup.config.ts
+++ b/packages/sdk-vue/tsup.config.ts
@@ -9,5 +9,5 @@ export default defineConfig({
   splitting: true,
   clean: true,
   treeshake: true,
-  external: ['vue', '@wraith-protocol/sdk'],
+  external: ['vue', '@wraith-protocol/sdk', '@wraith-protocol/sdk-agent'],
 });
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 47c63e1..88976b8 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -594,6 +594,9 @@ importers:
       '@wraith-protocol/sdk':
         specifier: workspace:*
         version: link:../..
+      '@wraith-protocol/sdk-agent':
+        specifier: workspace:*
+        version: link:../sdk-agent
       solid-js:
         specifier: ^1.9.0
         version: 1.9.15
@@ -625,6 +628,9 @@ importers:
       '@wraith-protocol/sdk':
         specifier: workspace:*
         version: link:../..
+      '@wraith-protocol/sdk-agent':
+        specifier: workspace:*
+        version: link:../sdk-agent
     devDependencies:
       '@stellar/stellar-sdk':
         specifier: ^13.1.0
@@ -659,6 +665,9 @@ importers:
       '@wraith-protocol/sdk':
         specifier: workspace:*
         version: link:../..
+      '@wraith-protocol/sdk-agent':
+        specifier: workspace:*
+        version: link:../sdk-agent
       vue:
         specifier: ^3.5.0
         version: 3.5.39(typescript@5.9.3)
@@ -3251,6 +3260,7 @@ packages:
 
   '@wraith-protocol/sdk@file:':
     resolution: {directory: '', type: directory}
+    engines: {node: '>=20'}
     peerDependencies:
       '@solana/web3.js': ^1.95.0
       '@stellar/stellar-sdk': ^13.1.0
diff --git a/scripts/compat/verify-ssr-imports.mjs b/scripts/compat/verify-ssr-imports.mjs
index c949379..3ae4999 100644
--- a/scripts/compat/verify-ssr-imports.mjs
+++ b/scripts/compat/verify-ssr-imports.mjs
@@ -37,17 +37,14 @@ const SCENARIOS = {
   '@wraith-protocol/sdk-vue': 'vue',
 };
 
-// Companions whose server import is already broken, with the error it fails
-// with. `Wraith`, `WraithAgent` and `Chain` moved from `@wraith-protocol/sdk` to
-// `@wraith-protocol/sdk-agent` in #193, but these packages still import them
-// from the core, so Node refuses to link them. An entry must keep failing with
-// its message: once the import is fixed this check fails until the entry is
-// removed, which turns the SSR render back on for that package.
-const KNOWN_IMPORT_FAILURES = {
-  '@wraith-protocol/sdk-solid': /does not provide an export named '(Wraith|WraithAgent|Chain)'/,
-  '@wraith-protocol/sdk-svelte': /does not provide an export named '(Wraith|WraithAgent|Chain)'/,
-  '@wraith-protocol/sdk-vue': /does not provide an export named '(Wraith|WraithAgent|Chain)'/,
-};
+// Companions whose server import is known to be broken, mapped to the error it
+// fails with, so a pre-existing failure does not mask a new one. Empty today:
+// the Vue, Svelte and Solid companions import `Wraith`, `WraithAgent` and
+// `Chain` from `@wraith-protocol/sdk-agent` (where #193 moved them) and link
+// cleanly again. An entry must keep failing with its message: once the import
+// is fixed this check fails until the entry is removed, which turns the SSR
+// render back on for that package.
+const KNOWN_IMPORT_FAILURES = {};
 
 let failed = 0;