Data Contracts Built In

Your Schema,
Your Rules.

Choose how strictly your data is validated. From schemaless prototyping to strict data contracts — with automatic drift detection and nothing ever lost.

Three Modes

Pick Your Enforcement Level.

Flex

Accept Everything

Missing fields

null

Extra fields

Dropped

Type mismatch

Coerced

New columns

Ignored

Best For

PrototypingSchemaless SourcesGetting Started

Recommended

Evolve

Accept + Alert

Missing fields

null + Alert

Extra fields

Auto-added

Type mismatch

Coerced + Alert

New columns

Accepted

Best For

SaaS APIsERP ExportsML Pipelines

Strict

Reject Mismatch

Missing fields

Rejected → DLQ

Extra fields

Rejected → DLQ

Type mismatch

Rejected → DLQ

New columns

Not accepted

Best For

Financial DataComplianceData Contracts

# Set mode when creating a stream

curl -X POST https://enrich.sh/streams \

-H "Authorization: Bearer $KEY" \

-d '{"stream_id":"orders","schema_mode":"evolve","fields":{"order_id":{"type":"string"},"amount":{"type":"float64"}}}'

Schema Drift Detection

Know When Your
Data Changes.

When evolve mode detects a schema change, it logs the event in real time. New fields, missing fields, type changes — all surfaced automatically so you never miss upstream changes.

New Field DetectedField 'discount_code' (string) appeared in 127 events

Missing FieldField 'currency' stopped appearing in 45 events

Type Change'amount' changed from int64 → string in 3 events

Schema Events

Last 24h

14:32erp_orders

+ newdiscount_code

14:28erp_orders

⟳ typeamount

13:15clicks

− missingreferrer

12:01erp_orders

+ newtax_rate

11:44events

⟳ typeuser_id

5 schema events todayView All →

Dead Letter Queue

Nothing Is Lost.

When strict mode rejects an event, it goes to the Dead Letter Queue — stored as Parquet, queryable, ready to fix and re-ingest.

Incoming Event

{ "order_id": "abc", "extra_field": 42 }

Strict Mode Validation

✗ extra_field not in schema

DLQStored as Parquet

Fix & Re-ingestNothing lost

StorageParquetDate-partitioned in R2

MetadataFullReason, field, timestamp

BillingFreeDoesn't count toward quota

Data Contracts,
Without the Overhead.

Start with flex, evolve to strict. No code changes needed.

Start Streaming

Read the Docs

Your Schema,Your Rules.

Three Modes

Pick Your Enforcement Level.

Flex

Evolve

Strict

Schema Drift Detection

Know When YourData Changes.

Dead Letter Queue

Nothing Is Lost.

Data Contracts,Without the Overhead.

Your Schema,
Your Rules.

Know When Your
Data Changes.

Data Contracts,
Without the Overhead.