BasePlugin surface structurally. ADK’s PluginManager
invokes every callback, so all are present even where a callback is a no-op.
ADK treats any non-undefined return as a short-circuit, so every callback
swallows its own errors and returns undefined.
Implements
BasePlugin
Constructors
Constructor
new WeaveAdkPlugin(): WeaveAdkPlugin
Returns
WeaveAdkPlugin
Properties
name
Defined in: src/integrations/googleAdk.ts:590readonlyname:"weave"=WEAVE_ADK_PLUGIN_NAME
Implementation of
AdkBasePlugin.name
Methods
afterAgentCallback()
afterAgentCallback(Defined in: src/integrations/googleAdk.ts:779 Callback executed after an agent’s primary logic has completed. This callback can be used to inspect, log, or modify the agent’s final result before it is returned.params):Promise<undefined>
Parameters
params
agent
BaseAgent
The agent that has just run.
callbackContext
Context
The context for the agent invocation.
Returns
Promise<undefined>
An optional Content object. If a value is returned, it will
replace the agent’s original result. Returning undefined uses the
original, unmodified result.
Implementation of
AdkBasePlugin.afterAgentCallback
afterContextCompaction()
afterContextCompaction(Defined in: src/integrations/googleAdk.ts:997 Callback executed after context compaction. This callback provides an opportunity to inspect the context after it has been compacted._params):Promise<undefined>
Parameters
_params
unknown
Returns
Promise<undefined>
Implementation of
AdkBasePlugin.afterContextCompaction
afterModelCallback()
afterModelCallback(Defined in: src/integrations/googleAdk.ts:841 Callback executed after a response is received from the model. This is the ideal place to log model responses, collect metrics on token usage, or perform post-processing on the rawparams):Promise<undefined>
LlmResponse.
Parameters
params
callbackContext
Context
The context for the current agent call.
llmResponse
LlmResponse
The response object received from the model.
Returns
Promise<undefined>
An optional value. A non-undefined return may be used by the
framework to modify or replace the response. Returning undefined
allows the original response to be used.
Implementation of
AdkBasePlugin.afterModelCallback
afterRunCallback()
afterRunCallback(Defined in: src/integrations/googleAdk.ts:713 Callback executed after an ADK runner run has completed. This is the final callback in the ADK lifecycle, suitable for cleanup, final logging, or reporting tasks.params):Promise<undefined>
Parameters
params
invocationContext
InvocationContext
The context for the entire invocation.
Returns
Promise<undefined>
undefined
Implementation of
AdkBasePlugin.afterRunCallback
afterToolCallback()
afterToolCallback(Defined in: src/integrations/googleAdk.ts:965 Callback executed after a tool has been called. This callback allows for inspecting, logging, or modifying the result returned by a tool.params):Promise<undefined>
Parameters
params
result
Record<string, unknown> | null
The dictionary returned by the tool invocation.
tool
BaseTool
The tool instance that has just been executed.
toolArgs
Record<string, unknown>
The original arguments that were passed to the tool.
toolContext
Context
The context specific to the tool execution.
Returns
Promise<undefined>
An optional dictionary. If a dictionary is returned, it will
replace the original result from the tool. This allows for
post-processing or altering tool outputs. Returning undefined uses
the original, unmodified result.
Implementation of
AdkBasePlugin.afterToolCallback
beforeAgentCallback()
beforeAgentCallback(Defined in: src/integrations/googleAdk.ts:765 Callback executed before an agent’s primary logic is invoked. This callback can be used for logging, setup, or to short-circuit the agent’s execution by returning a value.params):Promise<undefined>
Parameters
params
agent
BaseAgent
The agent that is about to run.
callbackContext
Context
The context for the agent invocation.
Returns
Promise<undefined>
An optional Content object. If a value is returned, it will
bypass the agent’s callbacks and its execution, and return this value
directly. Returning undefined allows the agent to proceed normally.
Implementation of
AdkBasePlugin.beforeAgentCallback
beforeContextCompaction()
beforeContextCompaction(Defined in: src/integrations/googleAdk.ts:993 Callback executed before context compaction. This callback provides an opportunity to inspect or modify the context before it is compacted._params):Promise<undefined>
Parameters
_params
unknown
Returns
Promise<undefined>
Implementation of
AdkBasePlugin.beforeContextCompaction
beforeModelCallback()
beforeModelCallback(Defined in: src/integrations/googleAdk.ts:804 Callback executed before a request is sent to the model. This provides an opportunity to inspect, log, or modify theparams):Promise<undefined>
LlmRequest
object. It can also be used to implement caching by returning a cached
LlmResponse, which would skip the actual model call.
Parameters
params
callbackContext
Context
The context for the current agent call.
llmRequest
LlmRequest
The prepared request object to be sent to the model.
Returns
Promise<undefined>
An optional value. The interpretation of a non-undefined
trigger an early exit and returns the response immediately. Returning
undefined allows the LLM request to proceed normally.
Implementation of
AdkBasePlugin.beforeModelCallback
beforeRunCallback()
beforeRunCallback(Defined in: src/integrations/googleAdk.ts:621 Callback executed before the ADK runner runs. This is the first callback to be called in the lifecycle, ideal for global setup or initialization tasks.params):Promise<undefined>
Parameters
params
invocationContext
InvocationContext
The context for the entire invocation, containing
session information, the root agent, etc.
Returns
Promise<undefined>
An optional Event to be returned to the ADK. Returning a value
to halt execution of the runner and ends the runner with that event.
Return undefined to proceed normally.
Implementation of
AdkBasePlugin.beforeRunCallback
beforeToolCallback()
beforeToolCallback(Defined in: src/integrations/googleAdk.ts:918 Callback executed before a tool is called. This callback is useful for logging tool usage, input validation, or modifying the arguments before they are passed to the tool.params):Promise<undefined>
Parameters
params
tool
BaseTool
The tool instance that is about to be executed.
toolArgs
Record<string, unknown>
The dictionary of arguments to be used for invoking the
tool.
toolContext
Context
The context specific to the tool execution.
Returns
Promise<undefined>
An optional dictionary. If a dictionary is returned, it will stop
the tool execution and return this response immediately. Returning
undefined uses the original, unmodified arguments.
Implementation of
AdkBasePlugin.beforeToolCallback
beforeToolSelection()
beforeToolSelection(Defined in: src/integrations/googleAdk.ts:914 Callback executed before a tool is selected. This callback provides an opportunity to inspect, log, or modify the available tools before they are selected._params):Promise<undefined>
Parameters
_params
unknown
Returns
Promise<undefined>
An optional value. A non-undefined return may be used by the
framework to modify or replace the available tools. Returning
undefined allows the original tools to be used.
Implementation of
AdkBasePlugin.beforeToolSelection
finishInterruptedInvocation()
finishInterruptedInvocation(Defined in: src/integrations/googleAdk.ts:732 Finalizes a run that never reachedinvocationId):void
afterRunCallback. ADK only dispatches
afterRunCallback after the event loop drains normally, so a consumer that
breaks out of runAsync early — or an aborted run — leaves the invocation
(and its spans) open. The auto-instrument runner wrapper calls this from a
finally to close them as interrupted. Idempotent: a no-op once the run
has already finished (the common, fully-consumed case).
Parameters
invocationId
string
Returns
void
onEventCallback()
onEventCallback(Defined in: src/integrations/googleAdk.ts:693 Callback executed after an event is yielded from runner. This is the ideal place to make modification to the event before the event is handled by the underlying agent app.params):Promise<undefined>
Parameters
params
event
Event
The event raised by the runner.
invocationContext
InvocationContext
The context for the entire invocation.
Returns
Promise<undefined>
An optional value. A non-undefined return may be used by the
framework to modify or replace the response. Returning undefined
allows the original response to be used.
Implementation of
AdkBasePlugin.onEventCallback
onModelErrorCallback()
onModelErrorCallback(Defined in: src/integrations/googleAdk.ts:884 Callback executed when a model call encounters an error. This callback provides an opportunity to handle model errors gracefully, potentially providing alternative responses or recovery mechanisms.params):Promise<undefined>
Parameters
params
callbackContext
Context
The context for the current agent call.
error
Error
The exception that was raised during model execution.
llmRequest
LlmRequest
The request that was sent to the model when the error
occurred.
Returns
Promise<undefined>
An optional LlmResponse. If an LlmResponse is returned, it will be
used instead of propagating the error. Returning undefined allows
the original error to be raised.
Implementation of
AdkBasePlugin.onModelErrorCallback
onToolErrorCallback()
onToolErrorCallback(Defined in: src/integrations/googleAdk.ts:977 Callback executed when a tool call encounters an error. tool: BaseTool; toolArgs: Record<string, unknown>; toolContext: Context; result: Record<string, unknown>; }): Promise<Record<string, unknown> | undefined> { return; } /** Callback executed when a tool call encounters an error. This callback provides an opportunity to handle tool errors gracefully, potentially providing alternative responses or recovery mechanisms.params):Promise<undefined>
Parameters
params
error
Error
The exception that was raised during tool execution.
tool
BaseTool
The tool instance that encountered an error.
toolArgs
Record<string, unknown>
The arguments that were passed to the tool.
toolContext
Context
The context specific to the tool execution.
Returns
Promise<undefined>
An optional dictionary. If a dictionary is returned, it will be
used as the tool response instead of propagating the error. Returning
undefined allows the original error to be raised.
Implementation of
AdkBasePlugin.onToolErrorCallback
onUserMessageCallback()
onUserMessageCallback(Defined in: src/integrations/googleAdk.ts:614 Callback executed when a user message is received before an invocation starts. This callback helps logging and modifying the user message before the runner starts the invocation._params):Promise<undefined>
Parameters
_params
invocationContext
InvocationContext
userMessage
Content
Returns
Promise<undefined>
An optional Content to be returned to the ADK. Returning a
value to replace the user message. Returning undefined to proceed
normally.
Implementation of
AdkBasePlugin.onUserMessageCallback