google/adk-go

Incorrect comment for OutputSchema field in LLMAgentConfig

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#756 opened on Apr 27, 2026

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Description

The comment for OutputSchema in agent/llmagent/llmagent.go says:

// NOTE: when this is set, agent can only reply and cannot use any tools,
// such as function tools, RAGs, agent transfer, etc.
OutputSchema *genai.Schema

This is inaccurate. OutputSchema can be used together with tools when needed, the framework automatically handles this via the set_model_response tool workaround (see internal/llminternal/outputschema_processor.go).

The comment should be updated to reflect the actual behavior.

File: agent/llmagent/llmagent.go:257

Contributor guide

Research direction
Edit the comment at agent/llmagent/llmagent.go:257 to accurately state that OutputSchema can be used with tools; review internal/llminternal/outputschema processor.go for the workaround mechanism.
Tech stack
go
Domain
backenddocumentation
Issue type
Documentation
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
1
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Under 1 hour
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Active
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Clear
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None
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
95