affaan-m/ECC · error · ValueError

Local ingestion must have zero provider calls

Error message

Local ingestion must have zero provider calls

What it means

validate_assets enforces that a receipt declares provider_calls as an integer equal to 0. This library only performs local hashing/binding; any claim of provider calls invalidates the receipt's local-only guarantee. Non-integer or nonzero values are rejected, including booleans (type check excludes bool via type(...) is not int).

Solutions

1. Use receipts produced by ingest_assets, which always sets provider_calls: 0.
2. Remove any provider-executing steps from the ingestion flow; this module forbids provider execution by design.
3. If a receipt legitimately used providers, it cannot be validated with validate_assets — keep it in a separate workflow.
4. Never hand-edit provider_calls; re-ingest to get a valid receipt.

Example fix

# before (hand-edited receipt)
{"schema": "tasteforge.assets.v1", "provider_calls": 2, ...}
# after: regenerate via ingest_assets; it writes provider_calls: 0
receipt = ingest_assets('config.json', 'receipt.json')

r = json.load(open(p))
pc = r.get('provider_calls')
assert type(pc) is int and pc == 0, 'receipt must record zero provider calls'

def zero_provider_calls(obj) -> bool:
    pc = obj.get('provider_calls')
    return type(pc) is int and pc == 0

When it happens

Trigger: Calling validate_assets on a hand-edited receipt where provider_calls was changed or removed; a receipt assembled by another tool that records provider usage; provider_calls set to true/1.0/"0" or other non-int types.

Common situations: Merging receipts from a provider-executing pipeline with local ones; manual edits to make a receipt 'look complete'; custom tooling writing its own receipts that include provider calls.

Understand the failure class

Background: Schema validation failed / invalid input schema: payload rejected because its shape doesn't match the expected schema — this error's family across 28 libraries.

Related errors

• artifact byte size does not match receipt
• Local ingestion cannot claim provider execution
• receipt binds missing artifact
• unbound emitted artifact
• application bundle differs from its bound evidence

AI-assisted analysis of affaan-m/ECC@8321021c54 (2026-09-16). Data as JSON: /api/errors/a53b09cb00df2e1b. Report an issue: GitHub.

Appendix: source

Thrown at skills/taste-application/scripts/tasteforge/assets.py:225

        receipt['genre_spec'] = _fingerprint(_path(config['genre_spec'], base))
    # All inputs already exist, so the output-exists gate also prevents collisions.
    try:
        with output.open('x', encoding='utf-8') as stream:
            json.dump(receipt, stream, indent=2, sort_keys=True)
            stream.write('\n')
    except OSError as exc:
        raise ValueError(f'Cannot create exclusive receipt: {output}') from exc
    return receipt


def validate_assets(receipt_path: str | Path) -> dict[str, Any]:
    """Re-hash every bound file and validate receipt semantics; no remote calls."""
    path = _path(receipt_path, Path.cwd())
    receipt = _load(path)
    if receipt.get('schema') != SCHEMA:
        raise ValueError('Unsupported asset receipt schema')
    if type(receipt.get('provider_calls')) is not int or receipt['provider_calls'] != 0:
        raise ValueError('Local ingestion must have zero provider calls')
    if receipt.get('provider_execution') is not False:
        raise ValueError('Local ingestion cannot claim provider execution')
    _, requests = (_bundle(receipt['bundle_receipt'], path.parent, True)
                   if 'bundle_receipt' in receipt else (None, {}))
    for asset in _assets(receipt.get('assets')):
        _taste(asset, requests, True)
        _verify_binding(asset, path.parent, asset['modality'])
        provenance = _provenance(asset, path.parent, True)
        if provenance is not None and provenance != asset['provider_provenance']:
            raise ValueError('Invalid supplied provenance declaration')
    inputs = receipt.get('input_artifacts')
    if not isinstance(inputs, list):
        raise ValueError('input_artifacts must be a list')
    for artifact in inputs:
        _verify_binding(artifact, path.parent)
    if 'genre_spec' in receipt:
        _verify_binding(receipt['genre_spec'], path.parent)
    return receipt

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