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Unsloth start: keep Claude subagents on the local model (#7333)

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Add CLAUDE_CODE_SUBAGENT_MODEL=inherit to the session-only claude settings overlay so built-in subagents stay on the loaded local model.
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Daniel Han 2026-07-23 20:47:29 -07:00 • committed by GitHub
commit a0f58c1128
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2 changed files with 17 additions and 4 deletions
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14
unsloth_cli/commands/start.py
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@ -1422,10 +1422,18 @@ _DYNAMIC_SECTIONS_FLAG = "--exclude-dynamic-system-prompt-sections"
def _claude_settings_overlay(model_id: str) -> str:
# Session-only `claude --settings` overlay (command-line tier, no ~/.claude write):
# suppress the attribution header, and pin availableModels to the served model so a
# user allowlist can't reject it. The pin must be non-empty; [] is ignored.
# suppress the attribution header, keep every subagent on the served model (a user
# CLAUDE_CODE_SUBAGENT_MODEL pin would otherwise route delegated work off the local
# endpoint), and pin availableModels to the served model so a user allowlist can't
# reject it. The pin must be non-empty; [] is ignored.
return json.dumps(
{"env": {"CLAUDE_CODE_ATTRIBUTION_HEADER": "0"}, "availableModels": [model_id]}
{
"env": {
"CLAUDE_CODE_ATTRIBUTION_HEADER": "0",
"CLAUDE_CODE_SUBAGENT_MODEL": "inherit",
},
"availableModels": [model_id],
}
)

7
unsloth_cli/tests/test_start.py
View file

@ -127,6 +127,8 @@ def test_claude_settings_overlay_pins_served_model():
assert overlay["availableModels"] == [MODEL["id"]]
# The attribution-header suppression is preserved alongside it.
assert overlay["env"]["CLAUDE_CODE_ATTRIBUTION_HEADER"] == "0"
# Subagents fall through to the served model instead of a user's opus/sonnet pin.
assert overlay["env"]["CLAUDE_CODE_SUBAGENT_MODEL"] == "inherit"
def test_install_agent_prompts_then_installs(monkeypatch):
@ -784,7 +786,10 @@ def test_connect_claude_no_launch(fake_studio):
_assert_env_set(result.output, "CLAUDE_AUTOCOMPACT_PCT_OVERRIDE", "90")
assert f"claude --model {MODEL['id']} --exclude-dynamic-system-prompt-sections" in result.output
# Overlay is passed inline (session-only), not a path into the user's ~/.claude.
assert "--settings" in result.output
command = _launch_command(result.output)
settings = json.loads(command[command.index("--settings") + 1])
assert settings["env"]["CLAUDE_CODE_SUBAGENT_MODEL"] == "inherit"
assert "--plugin-dir" not in command
assert ".claude/settings.json" not in result.output