#Executable
{Data Design} with Okyline,

When design, control, and governance converge

What makes {Okyline} unique,

Clear and executable contracts

Okyline relies contracts by example: directly understandable by business teams, but also executable on a large scale, without additional development.

Clear and executable contracts

Okyline relies contracts by example: directly understandable by business teams, but also executable on a large scale, without additional development.

Beyond “valid or not”: actionable reports

Okyline provides detailed reports: missing fields, error rates, statistics that can be used by both business users and auditors.

Beyond “valid or not”: actionable reports

Okyline provides detailed reports: missing fields, error rates, statistics that can be used by both business users and auditors.

From fragile code to contract-to-contract mapping

Okyline introduces declarative mappings between contracts: governed, traceable, and easily adaptable to each format change.

From fragile code to contract-to-contract mapping

Okyline introduces declarative mappings between contracts: governed, traceable, and easily adaptable to each format change.

Data Quality Gateway

Okyline acts as a data quality control gateway, isolating errors while allowing valid records to continue processing. This approach facilitates correction without interrupting flows.

Data Quality Gateway

Okyline acts as a data quality control gateway, isolating errors while allowing valid records to continue processing. This approach facilitates correction without interrupting flows.

Lightweight, fast, and sovereign

Okyline runs anywhere with a CLI of less than 1 MB, an embedded Java library, and a local studio without a backend—guaranteeing confidentiality and speed (tens of thousands of JSON, CSV... /second).

Lightweight, fast, and sovereign

Simplify and unify quality control for your data flows

Validity
Verifies formats, types, enumerations, nomenclatures, and business constraints to ensure data validity.
Completeness
Measures mandatory and conditional presence and completeness rates, field by field, across the entire flow.
Consistency
Checks logical dependencies, cross-field comparisons, and calculated business rules to ensure consistency.
Auditability
Produces readable, hierarchical reports with error rates and completeness, detailed for each field.

Designed for humans

Readable syntax, close to your data. Understandit in 5 minutes, master it in one hour.

Designed for humans

Readable syntax, close to your data. Understandit in 5 minutes, master it in one hour.

Interactive schema builder

Tens of thousands of validations per second on a single thread. Perfect for batch processing,ETL, or critical APIs.

Interactive schema builder

Tens of thousands of validations per second on a single thread. Perfect for batch processing,ETL, or critical APIs.

JSON Schema compatible

Native export to JSON Schema (draft-07). Directintegration with OpenAPI, Ajv, Fastify, Postman...

JSON Schema compatible

Native export to JSON Schema (draft-07). Directintegration with OpenAPI, Ajv, Fastify, Postman...

Ultra fast execution

Native export to JSON Schema (draft-07). Directintegration with OpenAPI, Ajv, Fastify, Postman...

Ultra fast execution

Native export to JSON Schema (draft-07). Directintegration with OpenAPI, Ajv, Fastify, Postman...

{ Breaking } garbage in / garbage out cycle_

Validation takes place before ingestion, where the risks are highest. Okyline checks the quality, completeness, and compliance of data in many formats—JSON, JSON Lines, CSV, fixed format, and XML. Whether individually or across millions of lines, discrepancies are immediately detected and documented, providing proof of compliance and traceability.

Read the guide

Contact us to discuss your data challenges

CSV, legacy, quality gateway, gouvernance … ? Let’s talk.

From {simple constraints} to complex and calculated business rules_

The Okyline language expresses both basic validations (formats, enumerations, dependencies...) and advanced business rules, including calculated formulas. This expressiveness allows functional requirements to be directly linked to execution, without recoding. Business logic remains governed and synchronized in real time.

Traceable and governed
{contract-to-contract} mapping_

The Okyline mapper enables declarative data transformation. Mapping compliance is based on the intrinsic consistency of contracts, offering 100% reliable traceability without costly development. Every structural change is immediately absorbed, without technical debt.

Traceable and governed
{contract-to-contract} mapping_

Design, test, and validate your contracts with ease, directly on your data example

Okyline Studio is an interactive environment for creating and adjusting your data schemas and mappings. With no backend, Okyline Studio guarantees that your data remains securely with you, while every change is validated and documented in real time.

Launch Okyline

We never access your data

The studio operates without a backend: your data never leaves your workstation or network. You remain in control of your environments while ensuring compliance (GDPR, internal security).

We never access your data

The studio operates without a backend: your data never leaves your workstation or network. You remain in control of your environments while ensuring compliance (GDPR, internal security).

Instant validation

Each modification to a schema or example immediately triggers validation. Errors are visible as they occur, without waiting for a test cycle.

Instant validation

Each modification to a schema or example immediately triggers validation. Errors are visible as they occur, without waiting for a test cycle.

Automatic documentation

Contracts drafted in the studio instantly produce clear documentation that can be used by both business and IT departments. Design, validation, and documentation progress together, smoothly and consistently.

Automatic documentation

Who is Okyline for ?

Business Teams, Data Stewards & Compliance

They ensure that contracts meet business requirements and use reports to check data quality and completeness.

Data Engineers & Architectes Data

They design contracts and mappings to implement data quality requirements.

Équipes IT & Produit

They integrate and execute these contracts in data pipelines, ensuring that controls are aligned with business requirements.

{Let's talk} about your #projects

Ensuring the quality of your data is a constant challenge?
Let's take a look at how to address this issue.

#Executable {Data Design} with Okyline,

#Executable {Data Design} with Okyline,

What makes {Okyline} unique,

What makes {Okyline} unique,

Clear and executable contracts

Clear and executable contracts

Beyond “valid or not”: actionable reports

Beyond “valid or not”: actionable reports

From fragile code to contract-to-contract mapping

From fragile code to contract-to-contract mapping

Data Quality Gateway

Data Quality Gateway

Lightweight, fast, and sovereign

Lightweight, fast, and sovereign

Simplify and unify quality control for your data flows

Validity

Completeness

Consistency

Auditability

Designed for humans

Designed for humans

Interactive schema builder

Interactive schema builder

JSON Schema compatible

JSON Schema compatible

Ultra fast execution

Ultra fast execution

{ Breaking } garbage in / garbage out cycle_

{ Breaking } garbage in / garbage out cycle_

Contact us to discuss your data challenges

From {simple constraints} to complex and calculated business rules_

From {simple constraints} to complex and calculated business rules_

Traceable and governed {contract-to-contract} mapping_

Traceable and governed {contract-to-contract} mapping_

Design, test, and validate your contracts with ease, directly on your data example

We never access your data

We never access your data

Instant validation

Instant validation

Automatic documentation

Automatic documentation

Who is Okyline for ?

Business Teams, Data Stewards & Compliance

Data Engineers & Architectes Data

Équipes IT & Produit

{Let's talk} about your #projects

{Let's talk} about your #projects

#Executable
{Data Design} with Okyline,

#Executable
{Data Design} with Okyline,

Traceable and governed
{contract-to-contract} mapping_

Traceable and governed
{contract-to-contract} mapping_