release: 0.22.2

.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-  ".": "0.22.1"
+  ".": "0.22.2"
 }

CHANGELOG.md

@@ -1,5 +1,29 @@
 # Changelog
 
+## 0.22.2 (2026-04-13)
+
+Full Changelog: [v0.22.1...v0.22.2](https://github.com/isaacus-dev/isaacus-typescript/compare/v0.22.1...v0.22.2)
+
+### Chores
+
+* **internal:** codegen related update ([cd5ec86](https://github.com/isaacus-dev/isaacus-typescript/commit/cd5ec86a820fbac4520158b5fae003a6599fefc0))
+* **internal:** codegen related update ([e862e90](https://github.com/isaacus-dev/isaacus-typescript/commit/e862e90b1f033b392912960f942d40fc383ce105))
+* **internal:** fix MCP docker image builds in yarn projects ([1bae689](https://github.com/isaacus-dev/isaacus-typescript/commit/1bae68900a33b2493aab475da4ab3b2b29df7107))
+* **internal:** fix MCP server import ordering ([f6e97bb](https://github.com/isaacus-dev/isaacus-typescript/commit/f6e97bbf7d651a7de7144059598e81bd625fb592))
+* **internal:** improve local docs search for MCP servers ([a75ecde](https://github.com/isaacus-dev/isaacus-typescript/commit/a75ecdeaa324f978296b0bff15dd1cb025826cea))
+* **internal:** improve local docs search for MCP servers ([04d3e6d](https://github.com/isaacus-dev/isaacus-typescript/commit/04d3e6d50fb40450008b888f47c0337a964bee83))
+* **internal:** show error causes in MCP servers when running in local mode ([fa77f22](https://github.com/isaacus-dev/isaacus-typescript/commit/fa77f220e93b435a3b7ad0ad37b9f5158e4e7bba))
+* **internal:** support type annotations when running MCP in local execution mode ([54d9001](https://github.com/isaacus-dev/isaacus-typescript/commit/54d90010c7f02e93aebbbb0d577d47f8557f5933))
+* **internal:** use link instead of file in MCP server package.json files ([670add9](https://github.com/isaacus-dev/isaacus-typescript/commit/670add93de484bd49d49dcd03c3d5bc3581d2021))
+* **mcp-server:** add support for session id, forward client info ([113e23c](https://github.com/isaacus-dev/isaacus-typescript/commit/113e23c3565fd8f4c39dc54e5ccb77216b3230f5))
+* **mcp-server:** increase local docs search result count from 5 to 10 ([2e69ea0](https://github.com/isaacus-dev/isaacus-typescript/commit/2e69ea055862bde72ba63d47eb769a9a7750e079))
+* **mcp-server:** log client info ([823adba](https://github.com/isaacus-dev/isaacus-typescript/commit/823adbac413f484a67e00354e5284e89479b71da))
+
+
+### Documentation
+
+* update examples ([e668eb8](https://github.com/isaacus-dev/isaacus-typescript/commit/e668eb823f4bcd59c96bc62a232f1d608a7ff9f3))
+
 ## 0.22.1 (2026-03-28)
 
 Full Changelog: [v0.22.0...v0.22.1](https://github.com/isaacus-dev/isaacus-typescript/compare/v0.22.0...v0.22.1)

package.json

@@ -1,6 +1,6 @@
 {
   "name": "isaacus",
-  "version": "0.22.1",
+  "version": "0.22.2",
   "description": "The official TypeScript library for the Isaacus API",
   "author": "Isaacus <support@isaacus.com>",
   "types": "dist/index.d.ts",

packages/mcp-server/Dockerfile

@@ -35,7 +35,9 @@ COPY . .
 
 # Install all dependencies and build everything
 RUN yarn install --frozen-lockfile && \
-    yarn build
+    yarn build && \
+    # Remove the symlink to the SDK so it doesn't interfere with the explicit COPY below
+    rm -Rf packages/mcp-server/node_modules/isaacus
 
 FROM denoland/deno:alpine-2.7.1
 

packages/mcp-server/manifest.json

@@ -1,7 +1,7 @@
 {
   "dxt_version": "0.2",
   "name": "isaacus-mcp",
-  "version": "0.22.1",
+  "version": "0.22.2",
   "description": "The official MCP Server for the Isaacus API",
   "author": {
     "name": "Isaacus",

packages/mcp-server/package.json

@@ -1,6 +1,6 @@
 {
   "name": "isaacus-mcp",
-  "version": "0.22.1",
+  "version": "0.22.2",
   "description": "The official MCP Server for the Isaacus API",
   "author": "Isaacus <support@isaacus.com>",
   "types": "dist/index.d.ts",
@@ -30,7 +30,7 @@
     "fix": "eslint --fix ."
   },
   "dependencies": {
-    "isaacus": "file:../../dist/",
+    "isaacus": "link:../../dist/",
     "ajv": "^8.18.0",
     "@cloudflare/cabidela": "^0.2.4",
     "@hono/node-server": "^1.19.10",

packages/mcp-server/src/code-tool-worker.ts

@@ -7,6 +7,10 @@ import ts from 'typescript';
 import { WorkerOutput } from './code-tool-types';
 import { Isaacus, ClientOptions } from 'isaacus';
 
+async function tseval(code: string) {
+  return import('data:application/typescript;charset=utf-8;base64,' + Buffer.from(code).toString('base64'));
+}
+
 function getRunFunctionSource(code: string): {
   type: 'declaration' | 'expression';
   client: string | undefined;
@@ -185,7 +189,8 @@ function makeSdkProxy<T extends object>(obj: T, { path, isBelievedBad = false }:
 
 function parseError(code: string, error: unknown): string | undefined {
   if (!(error instanceof Error)) return;
-  const message = error.name ? `${error.name}: ${error.message}` : error.message;
+  const cause = error.cause instanceof Error ? `: ${error.cause.message}` : '';
+  const message = error.name ? `${error.name}: ${error.message}${cause}` : `${error.message}${cause}`;
   try {
     // Deno uses V8; the first "<anonymous>:LINE:COLUMN" is the top of stack.
     const lineNumber = error.stack?.match(/<anonymous>:([0-9]+):[0-9]+/)?.[1];
@@ -241,7 +246,9 @@ const fetch = async (req: Request): Promise<Response> => {
 
   const log_lines: string[] = [];
   const err_lines: string[] = [];
-  const console = {
+  const originalConsole = globalThis.console;
+  globalThis.console = {
+    ...originalConsole,
     log: (...args: unknown[]) => {
       log_lines.push(util.format(...args));
     },
@@ -251,7 +258,7 @@ const fetch = async (req: Request): Promise<Response> => {
   };
   try {
     let run_ = async (client: any) => {};
-    eval(`${code}\nrun_ = run;`);
+    run_ = (await tseval(`${code}\nexport default run;`)).default;
     const result = await run_(makeSdkProxy(client, { path: ['client'] }));
     return Response.json({
       is_error: false,
@@ -269,6 +276,8 @@ const fetch = async (req: Request): Promise<Response> => {
       } satisfies WorkerOutput,
       { status: 400, statusText: 'Code execution error' },
     );
+  } finally {
+    globalThis.console = originalConsole;
   }
 };
 

packages/mcp-server/src/docs-search-tool.ts

@@ -50,23 +50,14 @@ export function setLocalSearch(search: LocalDocsSearch): void {
   _localSearch = search;
 }
 
-const SUPPORTED_LANGUAGES = new Set(['http', 'typescript', 'javascript']);
-
 async function searchLocal(args: Record<string, unknown>): Promise<unknown> {
   if (!_localSearch) {
     throw new Error('Local search not initialized');
   }
 
   const query = (args['query'] as string) ?? '';
   const language = (args['language'] as string) ?? 'typescript';
-  const detail = (args['detail'] as string) ?? 'verbose';
-
-  if (!SUPPORTED_LANGUAGES.has(language)) {
-    throw new Error(
-      `Local docs search only supports HTTP, TypeScript, and JavaScript. Got language="${language}". ` +
-        `Use --docs-search-mode stainless-api for other languages, or set language to "http", "typescript", or "javascript".`,
-    );
-  }
+  const detail = (args['detail'] as string) ?? 'default';
 
   return _localSearch.search({
     query,
@@ -76,17 +67,18 @@ async function searchLocal(args: Record<string, unknown>): Promise<unknown> {
   }).results;
 }
 
-async function searchRemote(
-  args: Record<string, unknown>,
-  stainlessApiKey: string | undefined,
-): Promise<unknown> {
+async function searchRemote(args: Record<string, unknown>, reqContext: McpRequestContext): Promise<unknown> {
   const body = args as any;
   const query = new URLSearchParams(body).toString();
 
   const startTime = Date.now();
   const result = await fetch(`${docsSearchURL}?${query}`, {
     headers: {
-      ...(stainlessApiKey && { Authorization: stainlessApiKey }),
+      ...(reqContext.stainlessApiKey && { Authorization: reqContext.stainlessApiKey }),
+      ...(reqContext.mcpSessionId && { 'x-stainless-mcp-session-id': reqContext.mcpSessionId }),
+      ...(reqContext.mcpClientInfo && {
+        'x-stainless-mcp-client-info': JSON.stringify(reqContext.mcpClientInfo),
+      }),
     },
   });
 
@@ -105,7 +97,7 @@ async function searchRemote(
       'Got error response from docs search tool',
     );
 
-    if (result.status === 404 && !stainlessApiKey) {
+    if (result.status === 404 && !reqContext.stainlessApiKey) {
       throw new Error(
         'Could not find docs for this project. You may need to provide a Stainless API key via the STAINLESS_API_KEY environment variable, the --stainless-api-key flag, or the x-stainless-api-key HTTP header.',
       );
@@ -140,7 +132,7 @@ export const handler = async ({
     return asTextContentResult(await searchLocal(body));
   }
 
-  return asTextContentResult(await searchRemote(body, reqContext.stainlessApiKey));
+  return asTextContentResult(await searchRemote(body, reqContext));
 };
 
 export default { metadata, tool, handler };

packages/mcp-server/src/http.ts

@@ -69,6 +69,11 @@ const newServer = async ({
     }
   }
 
+  const mcpClientInfo =
+    typeof req.body?.params?.clientInfo?.name === 'string' ?
+      { name: req.body.params.clientInfo.name, version: String(req.body.params.clientInfo.version ?? '') }
+    : undefined;
+
   await initMcpServer({
     server: server,
     mcpOptions: effectiveMcpOptions,
@@ -78,8 +83,14 @@ const newServer = async ({
     },
     stainlessApiKey: stainlessApiKey,
     upstreamClientEnvs,
+    mcpSessionId: (req as any).mcpSessionId,
+    mcpClientInfo,
   });
 
+  if (mcpClientInfo) {
+    getLogger().info({ mcpSessionId: (req as any).mcpSessionId, mcpClientInfo }, 'MCP client connected');
+  }
+
   return server;
 };
 
@@ -135,9 +146,23 @@ export const streamableHTTPApp = ({
   const app = express();
   app.set('query parser', 'extended');
   app.use(express.json());
+  app.use((req: express.Request, res: express.Response, next: express.NextFunction) => {
+    const existing = req.headers['mcp-session-id'];
+    const sessionId = (Array.isArray(existing) ? existing[0] : existing) || crypto.randomUUID();
+    (req as any).mcpSessionId = sessionId;
+    const origWriteHead = res.writeHead.bind(res);
+    res.writeHead = function (statusCode: number, ...rest: any[]) {
+      res.setHeader('mcp-session-id', sessionId);
+      return origWriteHead(statusCode, ...rest);
+    } as typeof res.writeHead;
+    next();
+  });
   app.use(
     pinoHttp({
       logger: getLogger(),
+      customProps: (req) => ({
+        mcpSessionId: (req as any).mcpSessionId,
+      }),
       customLogLevel: (req, res) => {
         if (res.statusCode >= 500) {
           return 'error';

packages/mcp-server/src/instructions.ts

@@ -1,8 +1,8 @@
 // File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 import fs from 'fs/promises';
-import { readEnv } from './util';
 import { getLogger } from './logger';
+import { readEnv } from './util';
 
 const INSTRUCTIONS_CACHE_TTL_MS = 15 * 60 * 1000; // 15 minutes