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Make rewind session upon cancellation accessible via API server

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#7,177 3 comentarios 0 reacciones 1 asignado Ver en GitHub

Los mantenedores suelen responder en 6 días

@sanketpatil06 ya está trabajando en esto.

Desde el 21/9/2026.

Evaluación

Dificultad
4/5
Tiempo estimado
3-5 días
Aptitud para principiantes
48/100
Tipo de issue
Nueva funcionalidad
Claridad
Bastante claro
Estado de actividad
Activo
Stack tecnológico
python
Área
api

Línea de trabajo

Start in api_server.py and compare the existing API behavior with the cancellation and rewind flow exposed by the Debug Web UI. Investigate the proposed runner.rewind_async entry point and determine how it should be exposed through an API endpoint. Done means the API server can cancel generation and rewind the session to its previous state without requiring clients to save, delete, and recreate sessions.

Escrito por el modelo de indexación a partir del texto del issue.

Descripción

request clarification services

** Please make sure you read the contribution guide and file the issues in the right place. **
Contribution guide.

🔴 Required Information

Please ensure all items in this section are completed to allow for efficient
triaging. Requests without complete information may be rejected / deprioritized.
If an item is not applicable to you - please mark it as N/A

Is your feature request related to a specific problem?

Agents may sometimes exhibit a heavy tool use, resulting in long processing times. In such a situation, one often wants to abort the generation, return to the last state, and rephrase the query. When interacting with our agents, we heavily rely on the ADK API (adk api_server), which doesn't seem to support a clean way to abort a generation and rewind the session to the previous state.

Describe the Solution You'd Like

The Debug Web UI (adk web) provides a button that allows to cancel the generation and rewind the session to the previous state. An analogous feature for the ADK API (adk api_server) is needed.

Impact on your work

Since we are currently not able to abort generation in a clean way, users often get frustrated when the agents take a wrong path and get lost in the various tools.

Willingness to contribute

N/A

🟡 Recommended Information

Describe Alternatives You've Considered

The only alternative we see with the ADK API so far would be save the session before every turn, delete it upon cancellation, and regenerate the session with the previous copy (create with id), but this seems overly excessive, especially since the ADK Web UI already has the functionality we are looking for.

Proposed API / Implementation

I'd expect that something like runner.rewind_async would be present in the api_server.py and accessible through one of the endpoints.

Additional Context

N/A

Lenguaje dominante
Python
Estrellas
21.6k
Forks
4k
Merge medio
9 h 59 min
PR fusionados (30 d)
5

Preparar el entorno

Primeros pasos

  1. Lee el issue completo y luego la guía de contribución del proyecto.
  2. Comenta en el issue que vas a ocuparte — evita que dos personas hagan lo mismo.
  3. Haz un fork del repositorio y trabaja en una rama.
  4. Abre un pull request que haga referencia al número del issue.

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