Add invocation_state to ToolContext #761
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Addresses issue strands-agents#579, strands-agents#750
Unshure
previously approved these changes
Aug 28, 2025
dbschmigelski
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Aug 28, 2025
This was referenced Aug 28, 2025
Ratish1
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Aug 30, 2025
Addresses issue strands-agents#579, strands-agents#750 --------- Co-authored-by: Mackenzie Zastrow <zastrowm@users.noreply.github.com>
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Description
#557 provided ToolContext which enabled tool_use but we held off on invocation_state until we had customer demand/use-cases. Issues #579 and #750 point out use cases that can't be easily solved today, so we'll allow invocation_state to be plumbed through.
We still have problems with the SDK updating the invocation_state, but it's an existing problem that we can't address until 2.0.
Naming
I went with
invocation_stateto match what we use inAgentTool.stream(), though the description refers to keyword arguments passed to agent invocation.Related Issues
Addresses issue #579, #750
Documentation PR
Will be a follow-up PR in the docs repo
Type of Change
New feature
Testing
How have you tested the change? Verify that the changes do not break functionality or introduce warnings in consuming repositories: agents-docs, agents-tools, agents-cli
hatch run prepareChecklist
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