keble-data-infra-contract 0.5.0

Framework-free raw commerce contracts shared by Keble data providers and the raw API.

keble-data-infra-contract

Install the provider-neutral public contract with pip install "keble-data-infra-contract>=0.5.0,<1".

Framework-free, provider-neutral raw-commerce contracts. This distribution owns validated request/response models, provider protocols, operation keys, manifests, and typed domain errors. It intentionally has no FastAPI, database, HTTP client, provider, platform, or idea dependency.

The distribution declares only registry-resolvable runtime dependencies. Do not add workspace-relative tool.uv.sources here: downstream Git/subdirectory installs must build this contract without inheriting paths outside the repository checkout.

Provider packages own implementations and native DTOs. The raw API consumes provider manifests and constructs HTTP paths from their typed operation keys.

Page[T] and RankingSnapshot[T] carry a provider-neutral usage list of keble-helpers.UsageAccountingEvent. Providers measure physical tokens, requests, items, media, or bytes; this contract only transports those facts. It must never contain prices, currency conversion, allocation policy, or deployment secrets. Cache hits return an empty list so old upstream spend is not replayed to consumers.

Version 0.2.0 is the exact-usage release. It requires keble-helpers>=1.51.0 and preserves media/storage/compute quantities plus fully failed video-operation attempts without reconstructing prices. The distribution has no Git or workspace source override, so consumers resolve the same public contract in clean build and runtime environments.

Version 0.3.0 adds first-class evidence-bearing TRENDING operations without aliasing search or rank. Products, creators, sellers, and videos have distinct typed query contracts; every result carries stable provider identity, optional product-family identity, structured standout evidence, source exhaustion, and shrink diagnostics. Providers report raw source truth and never apply cross-page dedupe. The central raw API alone applies the request's none, entity, or product_family policy through an opaque continuation session.

Version 0.4.0 adds the provider-neutral indexed-commerce boundary required by Shopify without reusing TikTok board or Amazon ASIN contracts:

• StoreSearchQuery, StoreIdentityLookupQuery, StoreProductsQuery, and ProductIdentityLookupQuery;
• optional product-search cursors that cannot be combined with numbered pages;
• PageInfo.end_cursor while preserving numbered-provider metadata;
• CommerceStoreObservation with typed popularity values and stable identities;
• indexed query provenance separated from ordered Store Leads/storefront source provenance and immutable artifact ids.

Provider-specific lifecycle values are normalized into closed universal store and listing state enums. Unknown fields, untyped extension bags, inferred identities, and source-provider collapse remain forbidden.

request = ProductTrendingQuery(
    query="red clothing",
    market="US",
    dedupe_mode=TrendDedupeMode.PRODUCT_FAMILY,
)

Blank product intent is valid category browsing. A filtered/dedupe-empty page may remain continuable; only definitive upstream evidence can set TrendExhaustion.EXHAUSTED. TrendEvidence.summary is display-ready but must also carry an auditable metric, event time, or provider-board position.

Version 0.5.0 replaces string-only upstream errors with a single immutable DataInfraFailure payload and DataInfraFailureError. Provider manifests now require a ProviderFailureAdapterProtocol; the raw API registers the declared native exception classes without importing Keepa, Amazon, TikTok, FastMoss, or EchoTik error types. Retry/payment/operator combinations are validated, payment requires reviewed evidence, and physical usage/capacity observations remain exact and sanitized. The minimum helper line is 1.52.2, which preserves negative provider token debt and a separate exact refill-reduction rate instead of rejecting, clamping, or misclassifying those capacity facts. parse_retry_after(...) is the single shared parser for positive delta-seconds and canonical IMF-fixdate headers. It ignores malformed, past, zero, and overflowing hints, returns timezone-aware UTC, and does not apply Platform's versioned maximum-hint policy.

IdempotencyKeyConflictError is the provider-neutral signal for a caller key already bound to another operation/request fingerprint. Its safe message never contains the caller key. Data Infra API owns Redis hashing, claim/replay, HTTP 409, and retention; the contract deliberately owns no datastore policy.

Side effects if changes:

• provider packages must adapt every declared native exception to this model;
• Data Infra API owns HTTP/Retry-After serialization of the payload;
• Idea/Platform own their separate durable job/recovery persistence models.
• provider adapters must use parse_retry_after rather than redeclaring HTTP date or numeric parsing.

Side effects if changes:

• provider packages and the raw API serialize these exact camel-case events;
• the Ideas platform deduplicates producer attempt keys and prices quantities with its own immutable profile effective at the event time.

uv run --package keble-data-infra-contract pytest -q keble-data-infra-contract/tests
uv run --package keble-data-infra-contract npx --yes pyright keble-data-infra-contract
uv build --package keble-data-infra-contract

Contract values inherit ContractModel, which accepts snake-case Python names and camel-case wire aliases, rejects undeclared fields, and is frozen. Persisted Mongo shapes do not belong here; provider/API packages own SchemaBase / MongoObjectBase aggregates when durability is required. ContractModel and the deliberately producer-tolerant Job/Result projection both configure Pydantic through keble-helpers.PydanticModelConfig; a local ConfigDict convention would split alias and validation ownership again.

Money, Currency, and AmazonMarketplace are imported from keble-helpers. Provider-native response details remain inside the provider package instead of crossing this boundary through an untyped extension bag.

Video enrichment uses the same framework-free boundary: immutable asset, submission, job, completion-event, result, and normalized-projection models plus one VideoEnrichmentGateway Protocol. HTTP submission and Mongo correlation remain implementations owned by keble-data-infra-api.

Each video operation outcome carries canonical UsageAccountingEvent rows and an opaque producer price-profile identity. The normalized projection preserves both the per-operation status (including partial failure) and a flattened usage view. It deliberately omits producer estimates and monetary values: ASR/OCR route policy stays in Video Enrichment, while the Ideas platform resolves its own immutable rates.

The job read also retains analysisOperationAttempts for every whole-workflow retry. This is the accounting path for fully failed jobs and for failed provider calls that precede a later successful result. Consumers must deduplicate by the producer attempt key carried by each usage event; they must not infer zero cost from the absence of a result.

Authorized provider transcripts use one canonical VideoTranscript/ VideoTranscriptSegment shape across submission, authoritative result reads, and the local projection. Reuse evidence binds the normalized transcript checksum to the data-infra source reference and media SHA-256; a title/description such as ShortVideo.caption is not a spoken transcript and cannot bypass ASR.