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fix: make subagent fail_on_tool_error configurable (#4198)

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Add fail_on_tool_error to AgentDefaults and wire it through
AgentLoop -> SubagentManager -> AgentRunSpec.

Previously hardcoded to True in SubagentManager._run_subagent.
Now configurable via config.json with default True for backward
compatibility. When set to False, subagents can retry on minor
tool errors instead of immediately failing.

Changes:
- nanobot/config/schema.py: add fail_on_tool_error field (default True)
- nanobot/agent/subagent.py: accept and forward fail_on_tool_error
- nanobot/agent/loop.py: pass config through to SubagentManager
- tests/agent/test_subagent.py: add regression test

Signed-off-by: axelray-dev <110029405+axelray-dev@users.noreply.github.com>
This commit is contained in:
axelray-dev
2026-06-25 22:53:36 +08:00
committed by Xubin Ren
parent 3596ccf828
commit 851a0ff50c
4 changed files with 44 additions and 3 deletions
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nanobot/config/schema.py
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@@ -132,6 +132,7 @@ class AgentDefaults(Base):
fallback_models: list[FallbackCandidate] = Field(default_factory=list)
max_tool_iterations: int = 200
max_concurrent_subagents: int = Field(default=1, ge=1)
fail_on_tool_error: bool = True
max_tool_result_chars: int = 16_000
provider_retry_mode: Literal["standard", "persistent"] = "standard"
tool_hint_max_length: int = Field(