TypeScript · Node.js · Electron
The choice of over 1300+ developers
The shortest path to intelligent software
A leader in Agent SDK standardization
Tansr Agent Harness SDK brings the agent loop, tools, context and permission controls into your application. Build the experience you have in mind, with the runtime already connected.
npm install @tansr/sdkRun the SDK in Node.js or the Electron main process. Connect your own UI.
Our MIT open-source commitmentimport { createSession } from '@tansr/sdk';
// Obtain a short-lived token from your authenticated backend.
const session = await createSession({ token, baseUrl });
session.send('Summarize this contract');
for await (const event of session.events) {
if (event.type === 'msg.text.delta') process.stdout.write(event.text);
}For SDK applications only
Choose an operating scale for agent applications built with the SDK. Adjudication, memory, context, tools and media capabilities span the plans; individuals and organizations each hold their own plan and wallet.
Standalone use of CLI, serve, ACP or headless does not require this subscription. Services delivered through platform applications are subject to their individual or organization owner's application limits. Model and media calls are still billed by usage.
限时五折！全额返还！
Was ¥98.00 / year50% off
¥49.00/ year
Annual subscription
Included operating limits:
Administrator-supplied catalog text is shown in its original language; translations are not available for these fields.
Choose SDK plan限时五折！全额返还！
Was ¥198.00 / year50% off
¥99.00/ year
Annual subscription
Included operating limits:
Administrator-supplied catalog text is shown in its original language; translations are not available for these fields.
Choose SDK plan限时五折！全额返还！
Was ¥1980.00 / year50% off
¥990.00/ year
Or ¥99.00 / month
Included operating limits:
Administrator-supplied catalog text is shown in its original language; translations are not available for these fields.
Choose SDK plan限时五折！全额返还！
Was ¥19800.00 / year50% off
¥9900.00/ year
Or ¥990.00 / month
Included operating limits:
Administrator-supplied catalog text is shown in its original language; translations are not available for these fields.
Choose SDK planCreate your first 5 applications free of subscription charges. More than 5 applications requires Individual developer (small) or above. Select individual or organization ownership before purchase. All prices are in Chinese yuan (CNY).
Bonus tokens offset settled usage and cannot be redeemed for cash. Applies only to platform-paid LLM usage settled in Chinese yuan (CNY). Input, output, cache-read and cache-write tokens are counted without duplication. Images, video, speech recognition (ASR), speech synthesis (TTS), search, bring-your-own-key (BYOK) calls and client-reported usage are excluded.
MIT · OPEN SOURCE COMMITMENT
We commit to releasing the Tansr Agent SDK source under the MIT license on .
Inspect how the SDK runs, handles data and applies permissions. Make technical decisions with the implementation in view.
Modify and integrate the released source under the MIT license, including in commercial products.
Retain and maintain your own copy of the released code, giving your team more control over its future.
The commitment concerns the SDK source to be released. MIT permits use, modification and redistribution while requiring copyright and license notices to be retained. Hosted platform services and model usage remain governed by their own terms.
DEMO
PC Electron Demo for macOS, Windows and Ubuntu, plus Android and iOS examples. More languages and HarmonyOS support are coming soon.
PARTNERSHIPS
Model procurement, Token sales, deployment services, business partnerships and financing.
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SUPPORT
Share integration issues, reproducible bugs or product suggestions with the Tansr team.
Agent Harness SDK
Build a desktop assistant, a file workflow or an agent inside your service. The harness handles the execution loop while you build the product experience.
An Agent Harness SDK connects model calls, tool execution and results in a multi-step agent loop. Use platform-configured, authorized models and switch through aliases within a session.
Explore the integration →Install the npm package with TypeScript definitions. Run the SDK in the Electron main process and connect your interface over IPC, or embed it in a Node.js server.
Explore the integration →Connect your business functions with defineTool, existing services through MCP, and domain knowledge through defineSkill or skill directories. File operations remain subject to capabilities and runtime permissions.
Explore the integration →Resume conversations with history snapshots and an injected store. Stream text and tool status into your interface with SessionView. Your application chooses where to persist conversation history.
Explore the integration →Connect capability switches, runtime rules and approval callbacks. In token mode, keep appkey credentials on your backend, issue short-lived tokens to clients and let the platform manage upstream keys.
Explore the integration →Track consumption with live usage events, per-user queries and developer cost reconciliation. The SDK provides metering; developers implement their own end-user pricing and payment flow.
Explore the integration →Embed the SDK in a desktop product or a Node.js service. The same agent core also supports terminal, service, protocol and unattended workflows.
Embed the agent runtime in your application and connect your own interface.
Use the same core from the terminal for interactive tasks.
Expose the runtime through a service interface.
Connect compatible clients through the Agent Client Protocol.
Run the agent without the interactive terminal interface.
It runs the model and tool loop, manages conversational context and sessions, and applies configured permission rules. Your application provides its business functions, user interface, identity and storage choices.
In token mode, your backend keeps the appkey credentials and issues short-lived tokens after authenticating a user. Upstream model keys stay on the platform. Follow the token-server example for the complete integration.
Use live usage events, per-user counters and developer cost reconciliation as inputs. You implement end-user prices, invoicing and payments. SDK application plans and model or media usage are separate charges.