bytedance/UI-TARS-desktop
Jan 2025 – Dec 2025
10 Months active
Languages Used
CJSCSSHTMLJSONJavaScriptMJSMarkdownShell
Technical Skills
Agent DevelopmentAnt DesignApplication DevelopmentAuto-updatesAutomationBug Fix
Charles
PROFILE
Charles
Jinxin worked on the bytedance/UI-TARS-desktop repository, delivering a robust desktop automation and agent platform over ten months. He engineered features such as MCP browser automation, vision-based UI actions, and a modular server-client architecture, focusing on reliability, cross-platform support, and developer experience. Using TypeScript, Node.js, and Electron, Jinxin implemented dynamic packaging, CI/CD automation, and secure update workflows, while integrating OpenAI APIs and advanced debugging tools. His approach emphasized maintainable code, comprehensive documentation, and rigorous testing, resulting in a stable, extensible system. The work addressed integration, security, and automation challenges, demonstrating depth in full stack development and release management.
Overall Statistics
Feature vs Bugs
62%Features
Repository Contributions
156Total
Bugs
41
Commits
156
Features
67
Lines of code
459,303
Activity Months10
Your Network
328 peopleSame Organization
@bytedance.com288
chao anMember
ashenMember
Bao JiangnanMember
bujianbinMember
caichengnanMember
Belinda CaoMember
htc070011Member
Rui CaoMember
Fengnan ChangMember
Work History
December 2025
2 Commits
Dec 1, 2025In December 2025, delivered security and stability improvements for bytedance/UI-TARS-desktop through critical React dependency patches and a coordinated 1.2.26 patch release across multiple packages. These efforts improved security posture, ensured consistency across client/server components, and streamlined maintenance with enhanced dependency governance.
2 Commits
Dec 1, 2025In December 2025, delivered security and stability improvements for bytedance/UI-TARS-desktop through critical React dependency patches and a coordinated 1.2.26 patch release across multiple packages. These efforts improved security posture, ensured consistency across client/server components, and streamlined maintenance with enhanced dependency governance.
December 2025
September 2025
2 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for bytedance/UI-TARS-desktop focusing on MCP integration reliability and registry adoption. Delivered two key changes that enhance MCP interoperability, stability, and project hygiene across the affected repository set: - Official MCP Registry Support in mcp-servers introduced, enabling use of the official registry for MCP-related operations. Updated changelogs across packages and added a new token file to .gitignore to reflect the change. - MCP Browser Server Logging Capability Fix corrected a mismatch where the MCP browser server declared a logging capability but lacked an implementation for logging/setLevel; updated the MCPServer constructor to remove the unused {} capability and ensure alignment with implemented capabilities; changelogs across affected packages updated to reflect the fix. These changes improve reliability, reduce runtime risk, and position the project for smoother MCP registry adoption.
September 2025
2 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for bytedance/UI-TARS-desktop focusing on MCP integration reliability and registry adoption. Delivered two key changes that enhance MCP interoperability, stability, and project hygiene across the affected repository set: - Official MCP Registry Support in mcp-servers introduced, enabling use of the official registry for MCP-related operations. Updated changelogs across packages and added a new token file to .gitignore to reflect the change. - MCP Browser Server Logging Capability Fix corrected a mismatch where the MCP browser server declared a logging capability but lacked an implementation for logging/setLevel; updated the MCPServer constructor to remove the unused {} capability and ensure alignment with implemented capabilities; changelogs across affected packages updated to reflect the fix. These changes improve reliability, reduce runtime risk, and position the project for smoother MCP registry adoption.
August 2025
2 Commits • 2 Features
Aug 1, 2025Monthly summary for 2025-08: Delivered two critical features for the bytedance/UI-TARS-desktop repo, focused on access control, debugging visibility, and stability. Implemented glob-based filtering for tools and prompts in the MCP client, enhanced debugging data collection in MCP Browser, and improved logging/maintainability with changelog updates and tests. These efforts reduce risk, improve user control over tooling, and accelerate issue diagnosis in production.
2 Commits • 2 Features
Aug 1, 2025Monthly summary for 2025-08: Delivered two critical features for the bytedance/UI-TARS-desktop repo, focused on access control, debugging visibility, and stability. Implemented glob-based filtering for tools and prompts in the MCP client, enhanced debugging data collection in MCP Browser, and improved logging/maintainability with changelog updates and tests. These efforts reduce risk, improve user control over tooling, and accelerate issue diagnosis in production.
August 2025
July 2025
7 Commits • 3 Features
Jul 1, 20252025-07 monthly summary for bytedance/UI-TARS-desktop: focused on reliability, security, and performance improvements across MCP Browser, Vision and Browser tooling, and HTTP/2 enablement. Delivered core MCP Browser API hardening, modularized request context, improved content extraction, and CI security workflow to reduce risk. Enhanced vision capture (WebP, speed), parallelized visibility/health checks, and robust browser tooling. Re-enabled HTTP/2 across managed browser instances for improved network efficiency. Implemented linting in CI to raise code quality. Overall, these changes improved stability, security, and developer velocity for automated browser tasks and end-user experiences.
July 2025
7 Commits • 3 Features
Jul 1, 20252025-07 monthly summary for bytedance/UI-TARS-desktop: focused on reliability, security, and performance improvements across MCP Browser, Vision and Browser tooling, and HTTP/2 enablement. Delivered core MCP Browser API hardening, modularized request context, improved content extraction, and CI security workflow to reduce risk. Enhanced vision capture (WebP, speed), parallelized visibility/health checks, and robust browser tooling. Re-enabled HTTP/2 across managed browser instances for improved network efficiency. Implemented linting in CI to raise code quality. Overall, these changes improved stability, security, and developer velocity for automated browser tasks and end-user experiences.
June 2025
15 Commits • 11 Features
Jun 1, 2025June 2025 performance snapshot for bytedance/UI-TARS-desktop: Delivered core features, stability improvements, and developer tooling that strengthen business value and developer productivity. Focus areas included dynamic packaging status resolution, extended MCP browser capabilities, and enhanced update and release workflows, alongside OpenAI API support and CLI scaffolding. Key outcomes include more reliable packaging/versioning, richer browser automation contexts, improved user-facing update checks, and streamlined project onboarding.
15 Commits • 11 Features
Jun 1, 2025June 2025 performance snapshot for bytedance/UI-TARS-desktop: Delivered core features, stability improvements, and developer tooling that strengthen business value and developer productivity. Focus areas included dynamic packaging status resolution, extended MCP browser capabilities, and enhanced update and release workflows, alongside OpenAI API support and CLI scaffolding. Key outcomes include more reliable packaging/versioning, richer browser automation contexts, improved user-facing update checks, and streamlined project onboarding.
June 2025
May 2025
8 Commits • 1 Features
May 1, 2025May 2025 monthly summary for bytedance/UI-TARS-desktop: Key features delivered include MCP browser server enhancements with configuration options (userDataDir, wsEndpoint, userAgent), keyboard input simulation, vision mode with screenshot and click actions, and native server capabilities (SSE and MCP HTTP server), plus documentation/visibility updates to improve integration and usability. Major bugs fixed include update mechanism reliability improvements: update checker release name validation fix and migration to a custom update provider to fetch updates from a new source, along with electron-updater agent-tars update fix. Overall, these efforts improved integration reliability, automation capabilities, and developer experience, delivering tangible business value through faster, more reliable updates and richer browser automation. Technologies/skills demonstrated include MCP browser stack, SSE, WebSocket, MCP HTTP server, vision-mode automation, keyboard input simulation, update-provider customization, and robust documentation.
May 2025
8 Commits • 1 Features
May 1, 2025May 2025 monthly summary for bytedance/UI-TARS-desktop: Key features delivered include MCP browser server enhancements with configuration options (userDataDir, wsEndpoint, userAgent), keyboard input simulation, vision mode with screenshot and click actions, and native server capabilities (SSE and MCP HTTP server), plus documentation/visibility updates to improve integration and usability. Major bugs fixed include update mechanism reliability improvements: update checker release name validation fix and migration to a custom update provider to fetch updates from a new source, along with electron-updater agent-tars update fix. Overall, these efforts improved integration reliability, automation capabilities, and developer experience, delivering tangible business value through faster, more reliable updates and richer browser automation. Technologies/skills demonstrated include MCP browser stack, SSE, WebSocket, MCP HTTP server, vision-mode automation, keyboard input simulation, update-provider customization, and robust documentation.
April 2025
18 Commits • 3 Features
Apr 1, 2025April 2025 monthly summary for bytedance/UI-TARS-desktop. Focused on delivering robust server management, reliable UI updates, and a hardened release pipeline, while fixing stability issues that impact user experience and onboarding. The team advanced cross-arch distribution and SDK-integrated MCP capabilities, enabling faster time-to-value for customers and easier maintenance.
18 Commits • 3 Features
Apr 1, 2025April 2025 monthly summary for bytedance/UI-TARS-desktop. Focused on delivering robust server management, reliable UI updates, and a hardened release pipeline, while fixing stability issues that impact user experience and onboarding. The team advanced cross-arch distribution and SDK-integrated MCP capabilities, enabling faster time-to-value for customers and easier maintenance.
April 2025
March 2025
44 Commits • 17 Features
Mar 1, 2025March 2025 — This month focused on stabilizing build and runtime surfaces, expanding browser-driven MCP capabilities, and accelerating release cycles. Key features delivered included: monorepo migration to apps/desktop with agent-infra.shared scaffolding and logger initialization; SDK refactor to return only base64 and scaleFactor; browser usage + MCP client/server support; new settings store and documentation updates (SDK.md, README, contrib guidance); and release/CI improvements that enhanced automation and reduced pipeline friction. Major bugs fixed: screenshot thumbnail undefined; native module dependencies build and ~28% bundle size reduction; Electron build issues; CI monorepo version errors; session/browser relaunch fixes; and fixes across MCP/browser navigation, replay UI, and UA handling. Overall impact: improved build stability, faster release cycles, smaller bundles, and more reliable MCP/browser experiences across platforms. Technologies/skills demonstrated: monorepo management (apps/desktop, turborepo), scaffolding shared packages, API refactors, cross-repo collaboration, CI optimization, and performance tuning.
March 2025
44 Commits • 17 Features
Mar 1, 2025March 2025 — This month focused on stabilizing build and runtime surfaces, expanding browser-driven MCP capabilities, and accelerating release cycles. Key features delivered included: monorepo migration to apps/desktop with agent-infra.shared scaffolding and logger initialization; SDK refactor to return only base64 and scaleFactor; browser usage + MCP client/server support; new settings store and documentation updates (SDK.md, README, contrib guidance); and release/CI improvements that enhanced automation and reduced pipeline friction. Major bugs fixed: screenshot thumbnail undefined; native module dependencies build and ~28% bundle size reduction; Electron build issues; CI monorepo version errors; session/browser relaunch fixes; and fixes across MCP/browser navigation, replay UI, and UA handling. Overall impact: improved build stability, faster release cycles, smaller bundles, and more reliable MCP/browser experiences across platforms. Technologies/skills demonstrated: monorepo management (apps/desktop, turborepo), scaffolding shared packages, API refactors, cross-repo collaboration, CI optimization, and performance tuning.
February 2025
27 Commits • 18 Features
Feb 1, 2025In February 2025, delivered key features, fixed critical issues, and improved release workflows for bytedance/UI-TARS-desktop. The work enhances cross-platform reliability, distribution efficiency, and integration capabilities, enabling faster deployments and better user experience across desktop environments.
27 Commits • 18 Features
Feb 1, 2025In February 2025, delivered key features, fixed critical issues, and improved release workflows for bytedance/UI-TARS-desktop. The work enhances cross-platform reliability, distribution efficiency, and integration capabilities, enabling faster deployments and better user experience across desktop environments.
February 2025
January 2025
31 Commits • 11 Features
Jan 1, 2025January 2025 summary for bytedance/UI-TARS-desktop: Delivered the foundational desktop UI scaffold, established robust CI/release automation, and improved cross‑platform reliability, enabling faster, safer iterations and a better developer experience. Key features include initial UI scaffolding for ui-tars-desktop, OS X default signing, an end-to-end test case, UI content enhancements, and documentation updates. Major bugs fixed across multiple modules to stabilize UX and workflow on Windows and macOS. The month positions the project for scalable delivery and clearer traceability, with measurable business value through improved quality, deployment velocity, and developer productivity.
January 2025
31 Commits • 11 Features
Jan 1, 2025January 2025 summary for bytedance/UI-TARS-desktop: Delivered the foundational desktop UI scaffold, established robust CI/release automation, and improved cross‑platform reliability, enabling faster, safer iterations and a better developer experience. Key features include initial UI scaffolding for ui-tars-desktop, OS X default signing, an end-to-end test case, UI content enhancements, and documentation updates. Major bugs fixed across multiple modules to stabilize UX and workflow on Windows and macOS. The month positions the project for scalable delivery and clearer traceability, with measurable business value through improved quality, deployment velocity, and developer productivity.
Activity
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Quality Metrics
Correctness88.6%
Maintainability87.2%
Architecture84.8%
Performance81.8%
AI Usage26.2%
Skills & Technologies
Programming Languages
CJSCSSHTMLJSONJavaScriptMJSMarkdownSCSSShellTypeScript
Technical Skills
AI Agent DevelopmentAPI DevelopmentAPI IntegrationAPI developmentAction ParsingAd BlockingAgent DevelopmentAnt DesignApplication DevelopmentAuto-updatesAutomationBackend DevelopmentBrowser APIsBrowser AutomationBrowser Development
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