aid: sarus
name: Sarus
description: 'Sarus Technologies is a Paris-based privacy-engineering company (Y Combinator W22,
  founded 2020 by the team behind AlephD) that builds a privacy layer sitting between sensitive data
  and the analysts, data scientists and LLMs that need it. The Sarus platform deploys inside the
  customer''s own infrastructure — Docker or Kubernetes, on-premises or on AWS, Azure and GCP — and
  applies differential privacy, DP-trained synthetic data and on-the-fly SQL and Python query
  rewriting so practitioners can run analytics, machine learning and LLM fine-tuning on data they
  never see. Developers reach the platform through the first-party ''sarus'' Python client for the
  Sarus Gateway, a BI connector, and Qrlew, Sarus''s open-source Rust SQL-rewriting engine. Because
  the product is customer-deployed, Sarus publishes no hosted, multi-tenant API base URL and no
  OpenAPI; its public machine-readable surface is the Sarus Data Spec protobuf schema and the Qrlew
  server''s published request examples.'
url: https://raw.githubusercontent.com/api-evangelist/sarus/refs/heads/main/apis.yml
x-type: company
x-source: serena-portfolio
specificationVersion: '0.23'
created: '2026-08-17'
modified: '2026-08-17'
image: https://cdn.prod.website-files.com/61bc58893bfe8290fd9fa12a/61bc58893bfe827a089fa131_logotype-dark.svg
tags:
- Company
- Ai Data
- Privacy
- Differential Privacy
- Synthetic Data
- Analytics
- Machine-Learning
- Data Governance
- SQL
- Open-Source
tags_raw:
- Company
- Ai Data
- Privacy
- Differential Privacy
- Synthetic Data
- Analytics
- Machine Learning
- Data Governance
- SQL
- Open Source
apis:
- aid: sarus:sarus-gateway
  name: Sarus Gateway API
  description: 'The Sarus Gateway is the server component of the Sarus privacy layer. It is deployed
    inside the customer''s own environment (Docker or Kubernetes, on-premises or in AWS/Azure/GCP)
    and is reached by the first-party ''sarus'' Python client, a BI connector, and SQL. Because every
    deployment is customer-hosted there is no shared production base URL; the host is a deployment
    variable. The reference at docs.sarus.tech is no longer publicly readable (GitLab Pages access
    control returns 401), so no OpenAPI or public endpoint reference could be captured.'
  humanURL: https://docs.sarus.tech/
  baseURL: https://{sarus-gateway-host}/
  tags:
  - Privacy
  - Differential Privacy
  - Analytics
  - Machine-Learning
  tags_raw:
  - Privacy
  - Differential Privacy
  - Analytics
  - Machine Learning
  properties:
  - type: Documentation
    url: https://docs.sarus.tech/
  - type: SDKs
    url: packages/sarus-packages.yml
  - type: Protobuf
    url: grpc/sarus-schema.proto
- aid: sarus:qrlew-server
  name: Qrlew Server API
  description: 'Qrlew is Sarus''s open-source (Apache 2.0) SQL manipulation and differential-privacy
    engine, written in Rust and published under github.com/Qrlew. The Qrlew server wraps it in a small
    RESTful API — POST /dot, /rewrite_as_privacy_unit_preserving, /rewrite_with_differential_privacy,
    /verify and GET /public_key — distributed as the container image ghcr.io/qrlew/server:main and run
    by the operator. The demo host the README names (qrlew.sarus.app) no longer resolves to a live
    service, so this is a self-hosted surface only.'
  humanURL: https://github.com/Qrlew/server
  baseURL: https://{qrlew-server-host}/
  tags:
  - SQL
  - Differential Privacy
  - Open-Source
  tags_raw:
  - SQL
  - Differential Privacy
  - Open Source
  properties:
  - type: SourceCode
    url: https://github.com/Qrlew/server
  - type: Documentation
    url: https://qrlew.github.io/
  - type: Examples
    url: examples/qrlew-server-example.http
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.sarus.tech/
- type: Documentation
  url: https://docs.sarus.tech/
- type: GitHubOrganization
  url: https://github.com/sarus-tech
- type: Blog
  url: https://www.sarus.tech/blog
- type: Support
  url: https://www.sarus.tech/contact
- type: PrivacyPolicy
  url: https://www.sarus.tech/privacy-policy
- type: Packages
  url: packages/sarus-packages.yml
- type: SDKs
  url: packages/sarus-packages.yml
- type: Protobuf
  url: grpc/sarus-schema.proto
- type: Examples
  url: examples/qrlew-server-example.http
- type: LLMsTxt
  url: llms/sarus-llms.txt
- type: Conformance
  url: conformance/sarus-conformance.yml
- type: Lifecycle
  url: lifecycle/sarus-lifecycle.yml
- type: Authentication
  url: authentication/sarus-authentication.yml
- type: Conventions
  url: conventions/sarus-conventions.yml
- type: ChangeLog
  url: changelog/sarus-changelog.yml
- type: Plans
  url: plans/sarus-plans-pricing.yml
- type: RateLimits
  url: rate-limits/sarus-rate-limits.yml