HKUDS/Vibe-Trading · error · FileNotFoundError

Preset {name!r} not found in {_redact_home(USER_PRESETS_DIR)

Error message

Preset {name!r} not found in {_redact_home(USER_PRESETS_DIR)} or the bundled presets. Available: {available}

What it means

load_preset searched USER_PRESETS_DIR and the bundled presets directory for '<name>.yaml' and found nothing. The FileNotFoundError helpfully lists the home directory (redacted) plus all available preset stems.

Source

Thrown at agent/src/swarm/presets.py:104

    Returns:
        Parsed YAML dict.

    Raises:
        ValueError: If the name is empty or contains path separators.
        FileNotFoundError: If the preset file does not exist in either the
            user directory (``~/.vibe-trading/swarm/presets/``) or the
            bundled package directory.
    """
    path = resolve_preset_path(name)
    if path is None:
        available = sorted({
            p.stem
            for directory in _preset_search_dirs()
            if directory.exists()
            for p in directory.glob("*.yaml")
        })
        raise FileNotFoundError(
            f"Preset {name!r} not found in {_redact_home(USER_PRESETS_DIR)} or "
            f"the bundled presets. Available: {available}"
        )
    return yaml.safe_load(path.read_text(encoding="utf-8"))


def list_presets() -> list[dict]:
    """Return summary info for all available presets, sorted by name.

    User presets (``~/.vibe-trading/swarm/presets/``) are listed alongside the
    bundled roster; when both directories carry the same file stem, the user
    preset wins — the same override rule as user skills.

    Returns:
        List of dicts with keys: name, title, description, agent_count,
        variables, source (``"user"`` or ``"bundled"``).
    """
    by_stem: dict[str, dict] = {}

View on GitHub (pinned to 80ffdda44c)

Solutions

1. Read the 'Available: [...]' list in the error message and use one of those names
2. Ensure your custom preset is a .yaml file directly inside USER_PRESETS_DIR
3. Check spelling and version changelog if a bundled preset disappeared

Example fix

# before
load_preset('fullresearch')  # FileNotFoundError
# after
load_preset('research-full')  # exact stem from the Available list

from pathlib import Path
from agent.src.swarm.presets import USER_PRESETS_DIR, PRESETS_DIR
available = {p.stem for d in (USER_PRESETS_DIR, PRESETS_DIR) if d.exists() for p in d.glob('*.yaml')}
if name not in available: name = 'default'  # or report list

def preset_exists(name: str) -> bool:
    from agent.src.swarm.presets import USER_PRESETS_DIR, PRESETS_DIR
    return any((d / f'{name}.yaml').exists() for d in (USER_PRESETS_DIR, PRESETS_DIR) if d.exists())

try:
    cfg = load_preset(name)
except FileNotFoundError as e:
    # e.message lists available presets; surface it to the user
    raise SystemExit(str(e))

When it happens

Trigger: load_preset('my-preset') when only my-preset.yml (wrong extension) exists; typo in the name; user preset written to the wrong directory; bundled preset renamed between versions.

Common situations: Version upgrades renaming bundled presets; users creating .yml instead of .yaml; CI environments lacking the user presets dir.

Understand the failure class

Background: "File not found" and ENOENT errors: why libraries can't find a file that should exist — this error's family across 50 libraries.

Related errors

• Run directory not found: {rd.name}
• Task not found: {path.name}
• invalid alpha_id
• alpha_id not found
• invalid period: {exc}

AI-assisted analysis of HKUDS/Vibe-Trading@80ffdda44c (2026-08-28). Data as JSON: /api/errors/6e600b06d9ed37f8. Report an issue: GitHub.