NousResearch/hermes-agent · error · ManifestError

petdex manifest had no 'pets' array

Error message

petdex manifest had no 'pets' array

What it means

Error "petdex manifest had no 'pets' array" thrown in NousResearch/hermes-agent.

Source

Thrown at agent/pet/manifest.py:145

        import httpx
    except ImportError as exc:  # pragma: no cover - httpx is a core dep
        raise ManifestError("httpx is required to fetch the petdex manifest") from exc

    try:
        resp = httpx.get(
            MANIFEST_URL,
            timeout=timeout,
            follow_redirects=True,
            headers={"User-Agent": "hermes-agent-petdex"},
        )
        resp.raise_for_status()
        payload = resp.json()
    except Exception as exc:  # noqa: BLE001 - normalize to one error type
        raise ManifestError(f"could not fetch petdex manifest: {exc}") from exc

    pets = payload.get("pets") if isinstance(payload, dict) else None
    if not isinstance(pets, list):
        raise ManifestError("petdex manifest had no 'pets' array")

    entries: list[ManifestEntry] = []
    for raw in pets:
        if not isinstance(raw, dict):
            continue
        entry = ManifestEntry.from_dict(raw)
        if entry.slug and entry.spritesheet_url:
            entries.append(entry)

    _cache = (time.monotonic(), entries)
    return entries


def find_entry(slug: str, *, timeout: float = _DEFAULT_TIMEOUT) -> ManifestEntry | None:
    """Return the manifest entry for *slug*, or ``None`` if not listed."""
    slug = slug.strip().lower()
    for entry in fetch_manifest(timeout=timeout):
        if entry.slug.lower() == slug:

View on GitHub (pinned to c896c09c42)

Solutions

1. Verify the manifest URL points at a valid petdex manifest with a 'pets' array.
2. Retry the fetch; the manifest may have been truncated.

When it happens

Trigger: Thrown at agent/pet/manifest.py:145 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of NousResearch/hermes-agent@c896c09c42 (2026-08-14). Data as JSON: /api/errors/4591ce06162bf86d. Report an issue: GitHub.