Developer
Yifan Wang
wanyif@google.com
Performance
Key patterns and highlights from this developer's activity.
Breakdown of growth, maintenance, and fixes effort over time.
Bugs introduced vs. fixed over time.
No bugs introduced or fixed in this period.
Reclassifies engineering effort based on bug attribution. Commits that introduced bugs are retrospectively counted as poor investments.
Investment Quality reclassifies engineering effort based on bug attribution data. Commits identified as buggy origins (those that introduced bugs later fixed by someone) have their grow and maintenance time moved into the Wasted Time category. Their waste (fix commits) remains counted as productive. All other commits retain their standard classification: grow is productive, maintenance is maintenance, and waste (fixes) is productive.
The standard model classifies commits as Growth, Maintenance, or Fixes. Investment Quality adds a quality lens: a commit that introduced a bug is retrospectively counted as a poor investment — the engineering time spent on it was wasted because it ultimately required additional fix work. Fix commits (Fixes in the standard model) are reframed as productive, because fixing bugs is valuable work.
Currently computed client-side from commit and bug attribution data. Ideal server-side endpoint:
POST /v1/organizations/{orgId}/investment-quality
Content-Type: application/json
Request:
{
"startTime": "2025-01-01T00:00:00Z",
"endTime": "2025-12-31T23:59:59Z",
"bucketSize": "BUCKET_SIZE_MONTH",
"groupBy": ["repository_id" | "deliverer_email"]
}
Response:
{
"productivePct": 74,
"maintenancePct": 18,
"wastedPct": 8,
"buckets": [
{
"bucketStart": "2025-01-01T00:00:00Z",
"productive": 4.2,
"maintenance": 1.8,
"wasted": 0.6
}
]
}Latest analyzed commits from this developer.
| Hash | Message | Date | Files |
|---|
Commit activity distribution by hour and day of week. Shows when this developer is most active.
Developers who frequently work on the same files and symbols. Higher score means stronger code collaboration.
| Effort |
|---|
| 22799c08 | This commit performs a **maintenance update** by upgrading the **ADK web dependency** to its latest version. This **dependency upgrade** incorporates a range of upstream changes, including potential new features, bug fixes, and performance improvements from the ADK web project. The specific details of these changes are documented within the **ADK web changelog**, which should be consulted for a comprehensive overview. This update ensures that all parts of the application integrating with or relying on the **ADK web framework** benefit from the most current ADK web capabilities and stability. | Mar 11 | 24 | – |
| 4460f4fa | This commit introduces a **new development endpoint** `/dev/build_graph/{app_name}` to the **ADK web server**, enabling the **serialization of application graph information** for a specified application. This **new capability** is integrated into `src/google/adk/cli/adk_web_server.py` and is specifically designed for **developer tooling**. The endpoint's availability is controlled by a `with_ui` flag passed to the `create_app` function, ensuring it remains **developer-only** and does not affect production environments or end-user functionality. | Feb 25 | 1 | grow |
| 9562cd66 | This commit introduces a **new capability** to the **ADK CLI web server** by exposing a dedicated API endpoint for application details. A new GET endpoint, `'/apps/{app_name}'`, is added to `src/google/adk/cli/adk_web_server.py`, allowing users to retrieve comprehensive information for a specified application. This enhancement, implemented via the `get_app_info` function, provides improved programmatic access to application metadata. It significantly boosts the observability and manageability of applications served by the ADK, enabling external tools or scripts to query specific app configurations and statuses. | Feb 12 | 1 | grow |
| 3686a3a9 | This commit performs a **maintenance update** to the **ADK CLI browser interface** by modifying `src/google/adk/cli/browser/index.html`. Specifically, it updates the copyright year from 2025 to 2026 and changes the reference to the main JavaScript bundle. This ensures the browser client loads the most current application code and displays accurate copyright information, reflecting a minor **dependency update** and **housekeeping** for the web assets. | Feb 5 | 2 | maint |
| ae993e88 | This commit **re-enables several deprecated legacy evaluation API endpoints** within the **ADK web server** (`adk_web_server.py`). It specifically restores functions such as `create_eval_set_legacy`, `list_eval_sets_legacy`, and `run_eval_legacy`. This is a **temporary fix** to prevent immediate breakage for web clients that still rely on these older APIs, bridging the gap until those clients are fully migrated to newer evaluation interfaces. The change ensures continued functionality for the **evaluation subsystem** accessed via the web. | Feb 5 | 1 | grow |
| de44bbc1 | This commit performs a **maintenance chore** for the **ADK web CLI browser interface**. It updates the `index.html` file to refresh references to the latest generated JavaScript and CSS bundles and to reflect the current copyright year. This ensures the **ADK web CLI** consistently loads the most up-to-date front-end assets, preventing potential issues with stale cached versions and maintaining accurate copyright information. | Feb 5 | 3 | maint |
| 37e6507c | This commit performs a **maintenance update** to the `adk_web` dependency, ensuring the project utilizes the latest features and fixes from that library. Concurrently, it **refactors** the internal **event handling system**, likely improving its robustness, performance, or flexibility. Furthermore, this change introduces **new capabilities** related to **A2UI**, expanding the project's user interface or interaction features. This work collectively enhances core system components and expands user-facing functionality. | Feb 3 | 32 | – |
| 45a25d78 | chore: update adk web to match main branch | Jan 7 | 4 | – |
| df868473 | chore: update adk web, fixes image not rendering, state not updating, update drop down box width and trace icons | Dec 11 | 4 | – |
| 14e38026 | chore: update adk web to match main branch | Nov 19 | 5 | – |
| abdc2bb9 | This commit performs a **maintenance update** for the **`adk-web`** library, specifically synchronizing its codebase to align with recent changes or requirements from the **`adk-web-builder`** tool. This **chore** ensures compatibility and leverages the latest features or fixes provided by the builder, streamlining the development and build process for `adk-web`. The update primarily affects the internal tooling and build infrastructure, with no direct impact on `adk-web`'s public API or runtime behavior. | Nov 4 | 10 | – |
| 8b6ee576 | This commit **removes the `working_in_progress` flag** specifically from the **agent builder endpoints**. This **maintenance** task indicates that the development or experimental phase for these particular **agent builder functionalities** has concluded. Consequently, these endpoints are now considered stable and fully available, removing any temporary UI indicators or conditional logic that previously marked them as incomplete. | Nov 4 | 2 | – |
| a0df75b6 | This commit introduces **reverse proxy support** for the **ADK web interface**, enabling its deployment under a sub-path. It adds a new `--url_prefix` command-line option to the `cli_web` and `cli_api_server` tools, which is then propagated to the `AdkWebServer` during initialization. This **new capability** ensures that the web server correctly handles internal URL routing and redirects, such as `get_ui_config` and `redirect_root_to_dev_ui`, when the application is accessed through a proxy. Consequently, users gain greater flexibility in deploying the ADK web application within existing infrastructure by specifying the base path for their proxy. | Oct 31 | 3 | grow |
| 27248196 | This **maintenance** commit updates the **ADK web browser interface**, specifically addressing visual inconsistencies. It **fixes the cursor color** and refines the appearance of the **thought bubble** within the UI. These improvements are achieved by updating various CSS variables and refreshing script references within the `src/google/adk/cli/browser/index.html` file. The changes enhance the overall user experience and visual fidelity of the ADK browser client. | Oct 22 | 3 | maint |
| aab2504e | chore: update adk web | Oct 22 | 5 | – |
| 5ac446d9 | This commit **introduces a new `invocation_id` field** to the `AgentRunRequest` model within the **`adk_web_server` module** (`src/google/adk/cli/adk_web_server.py`). This **feature enhancement** is crucial for enabling the **resumption of long-running agent functions**. The `invocation_id` is now passed to the agent's `run` method, allowing the system to uniquely identify and track ongoing operations. This change significantly improves the robustness of the **Agent Runtime** by providing a mechanism to recover from interruptions and continue complex, time-consuming tasks. | Oct 7 | 1 | grow |
| ce216786 | This commit **introduces new API endpoints** and **enhances existing ones** within the **CLI's FastAPI interface** (`src/google/adk/cli/fast_api.py`) to improve the **agent building process**. It adds crucial support for **temporary file management** and a **cancel operation** during agent builds, exposed through functions like `builder_build` and the new `builder_cancel`. This **new feature** significantly enhances the control and robustness of the agent building workflow, allowing users to manage resources and interrupt operations more effectively. | Oct 1 | 1 | grow |
| f743c29d | This commit performs a **version bump** for the **ADK library**, updating its official release number from `1.12.0` to `1.13.0`. This **maintenance chore** is reflected in the `src/google/adk/version.py` file, signifying a new development cycle or release milestone. The change primarily impacts the **library's self-identification** and release management, indicating a progression in its development. | Aug 27 | 2 | maint |
| af35e267 | This commit introduces a **new capability** to the **ADK CLI's FastAPI implementation**, specifically enhancing the `get_agent_builder` API endpoint. The endpoint, located in `src/google/adk/cli/fast_api.py`, now accepts an optional `file_path` parameter. This modification allows users to specify a particular agent configuration file for retrieval, providing more control over which agent definition is loaded. If no `file_path` is provided, the endpoint will default to retrieving `root_agent.yaml`. This change offers greater flexibility for interacting with the agent builder service. | Jul 29 | 1 | grow |
| b83b0a6e | This commit introduces a **new feature** by adding an experimental **GET endpoint** to the **ADK CLI's FastAPI server**. The new endpoint, `/builder/app/{app_name}`, is handled by the `get_agent_builder` function and allows for the programmatic retrieval of **agent builder YAML configuration files**. This enhancement to the **ADK CLI** provides a dedicated interface for accessing agent definitions, facilitating external integration and automation workflows. | Jul 25 | 1 | grow |
This commit performs a **maintenance update** by upgrading the **ADK web dependency** to its latest version. This **dependency upgrade** incorporates a range of upstream changes, including potential new features, bug fixes, and performance improvements from the ADK web project. The specific details of these changes are documented within the **ADK web changelog**, which should be consulted for a comprehensive overview. This update ensures that all parts of the application integrating with or relying on the **ADK web framework** benefit from the most current ADK web capabilities and stability.
This commit introduces a **new development endpoint** `/dev/build_graph/{app_name}` to the **ADK web server**, enabling the **serialization of application graph information** for a specified application. This **new capability** is integrated into `src/google/adk/cli/adk_web_server.py` and is specifically designed for **developer tooling**. The endpoint's availability is controlled by a `with_ui` flag passed to the `create_app` function, ensuring it remains **developer-only** and does not affect production environments or end-user functionality.
This commit introduces a **new capability** to the **ADK CLI web server** by exposing a dedicated API endpoint for application details. A new GET endpoint, `'/apps/{app_name}'`, is added to `src/google/adk/cli/adk_web_server.py`, allowing users to retrieve comprehensive information for a specified application. This enhancement, implemented via the `get_app_info` function, provides improved programmatic access to application metadata. It significantly boosts the observability and manageability of applications served by the ADK, enabling external tools or scripts to query specific app configurations and statuses.
This commit performs a **maintenance update** to the **ADK CLI browser interface** by modifying `src/google/adk/cli/browser/index.html`. Specifically, it updates the copyright year from 2025 to 2026 and changes the reference to the main JavaScript bundle. This ensures the browser client loads the most current application code and displays accurate copyright information, reflecting a minor **dependency update** and **housekeeping** for the web assets.
This commit **re-enables several deprecated legacy evaluation API endpoints** within the **ADK web server** (`adk_web_server.py`). It specifically restores functions such as `create_eval_set_legacy`, `list_eval_sets_legacy`, and `run_eval_legacy`. This is a **temporary fix** to prevent immediate breakage for web clients that still rely on these older APIs, bridging the gap until those clients are fully migrated to newer evaluation interfaces. The change ensures continued functionality for the **evaluation subsystem** accessed via the web.
This commit performs a **maintenance chore** for the **ADK web CLI browser interface**. It updates the `index.html` file to refresh references to the latest generated JavaScript and CSS bundles and to reflect the current copyright year. This ensures the **ADK web CLI** consistently loads the most up-to-date front-end assets, preventing potential issues with stale cached versions and maintaining accurate copyright information.
This commit performs a **maintenance update** to the `adk_web` dependency, ensuring the project utilizes the latest features and fixes from that library. Concurrently, it **refactors** the internal **event handling system**, likely improving its robustness, performance, or flexibility. Furthermore, this change introduces **new capabilities** related to **A2UI**, expanding the project's user interface or interaction features. This work collectively enhances core system components and expands user-facing functionality.
chore: update adk web to match main branch
chore: update adk web, fixes image not rendering, state not updating, update drop down box width and trace icons
chore: update adk web to match main branch
This commit performs a **maintenance update** for the **`adk-web`** library, specifically synchronizing its codebase to align with recent changes or requirements from the **`adk-web-builder`** tool. This **chore** ensures compatibility and leverages the latest features or fixes provided by the builder, streamlining the development and build process for `adk-web`. The update primarily affects the internal tooling and build infrastructure, with no direct impact on `adk-web`'s public API or runtime behavior.
This commit **removes the `working_in_progress` flag** specifically from the **agent builder endpoints**. This **maintenance** task indicates that the development or experimental phase for these particular **agent builder functionalities** has concluded. Consequently, these endpoints are now considered stable and fully available, removing any temporary UI indicators or conditional logic that previously marked them as incomplete.
This commit introduces **reverse proxy support** for the **ADK web interface**, enabling its deployment under a sub-path. It adds a new `--url_prefix` command-line option to the `cli_web` and `cli_api_server` tools, which is then propagated to the `AdkWebServer` during initialization. This **new capability** ensures that the web server correctly handles internal URL routing and redirects, such as `get_ui_config` and `redirect_root_to_dev_ui`, when the application is accessed through a proxy. Consequently, users gain greater flexibility in deploying the ADK web application within existing infrastructure by specifying the base path for their proxy.
This **maintenance** commit updates the **ADK web browser interface**, specifically addressing visual inconsistencies. It **fixes the cursor color** and refines the appearance of the **thought bubble** within the UI. These improvements are achieved by updating various CSS variables and refreshing script references within the `src/google/adk/cli/browser/index.html` file. The changes enhance the overall user experience and visual fidelity of the ADK browser client.
chore: update adk web
This commit **introduces a new `invocation_id` field** to the `AgentRunRequest` model within the **`adk_web_server` module** (`src/google/adk/cli/adk_web_server.py`). This **feature enhancement** is crucial for enabling the **resumption of long-running agent functions**. The `invocation_id` is now passed to the agent's `run` method, allowing the system to uniquely identify and track ongoing operations. This change significantly improves the robustness of the **Agent Runtime** by providing a mechanism to recover from interruptions and continue complex, time-consuming tasks.
This commit **introduces new API endpoints** and **enhances existing ones** within the **CLI's FastAPI interface** (`src/google/adk/cli/fast_api.py`) to improve the **agent building process**. It adds crucial support for **temporary file management** and a **cancel operation** during agent builds, exposed through functions like `builder_build` and the new `builder_cancel`. This **new feature** significantly enhances the control and robustness of the agent building workflow, allowing users to manage resources and interrupt operations more effectively.
This commit performs a **version bump** for the **ADK library**, updating its official release number from `1.12.0` to `1.13.0`. This **maintenance chore** is reflected in the `src/google/adk/version.py` file, signifying a new development cycle or release milestone. The change primarily impacts the **library's self-identification** and release management, indicating a progression in its development.
This commit introduces a **new capability** to the **ADK CLI's FastAPI implementation**, specifically enhancing the `get_agent_builder` API endpoint. The endpoint, located in `src/google/adk/cli/fast_api.py`, now accepts an optional `file_path` parameter. This modification allows users to specify a particular agent configuration file for retrieval, providing more control over which agent definition is loaded. If no `file_path` is provided, the endpoint will default to retrieving `root_agent.yaml`. This change offers greater flexibility for interacting with the agent builder service.
This commit introduces a **new feature** by adding an experimental **GET endpoint** to the **ADK CLI's FastAPI server**. The new endpoint, `/builder/app/{app_name}`, is handled by the `get_agent_builder` function and allows for the programmatic retrieval of **agent builder YAML configuration files**. This enhancement to the **ADK CLI** provides a dedicated interface for accessing agent definitions, facilitating external integration and automation workflows.