# Kaelio

> Kaelio is a San Francisco startup (Y Combinator, 2025) building the open-source context layer that makes AI data agents reliable. Its core project, ktx, auto-builds a governed layer of business knowledge and executable metric definitions from a company's data stack - Markdown wiki pages plus YAML that declares tables, joins, grain, measures and filters. Instead of an agent writing raw SQL that looks right but returns wrong numbers, it asks ktx for a metric and ktx plans the joins and compiles warehouse SQL. Kaelio ships ktx (Apache 2.0), a hosted ktx Cloud with governance and observability, and a managed Data Agent that answers questions in Slack, web and email with source-backed results.

- **Founded:** 2024
- **Headquarters:** San Francisco, United States
- **Founders:** Luca Martial (Co-Founder & CEO), Andrey Avtomonov (Co-Founder & CTO)
- **Team size:** 3-8 employees
- **Products:** ktx, ktx Cloud, Data Agent
- **Notable:** Accepted into Y Combinator (2025 batch), Open-sourced ktx under Apache 2.0 on GitHub, Built integrations across Postgres, Snowflake, BigQuery, ClickHouse, MySQL, SQL Server, SQLite, dbt, MetricFlow, LookML, Looker, Metabase and Notion

## Products & services

- **ktx** — Open-source context layer (Apache 2.0) that runs locally via MCP and CLI. Auto-builds Markdown business context plus YAML executable definitions (tables, grain, joins, measures, dimensions, filters) so agents request metrics instead of writing raw SQL; ktx plans join paths, detects issues like fanout, and compiles warehouse SQL.
- **ktx Cloud** — Hosted team workspace with multi-user governance, review workflows, SSO, continuous ingest and observability.
- **Data Agent** — Managed AI data agent grounded in the context layer, accessible via Slack, web and email, returning source-backed answers, digests and alerts.

## Achievements

- Accepted into Y Combinator (2025 batch)
- Open-sourced ktx under Apache 2.0 on GitHub
- Built integrations across Postgres, Snowflake, BigQuery, ClickHouse, MySQL, SQL Server, SQLite, dbt, MetricFlow, LookML, Looker, Metabase and Notion
- Assembled named early adopters including Mercy, Handshake, Gladia and Vapi

## Latest updates

- **2025-05** — Raised its Y Combinator-era round led by Rebel Fund.
- **2025** — Launched ktx open source, ktx Cloud and a managed Data Agent.

## Links

- Website: https://kaelio.com
- LinkedIn: https://www.linkedin.com/company/kaelio-ai
- GitHub: https://github.com/Kaelio/ktx

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Profile page: https://yespress.io/kaelio-yc-x25
Published by YesPress — https://yespress.io
Last updated: 2026-07-30