# Johann Schleier-Smith

> Johann Schleier-Smith is crystal DBA founder/former CEO; Postgres MCP Pro contributor; now Temporal. Postgres MCP Pro on Anchor Terminal, with grades, an about and public profiles.

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- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)
- Updated: 2026-10-27

Crystal DBA founder/former CEO; Postgres MCP Pro contributor; now Temporal.

Johann Schleier-Smith founded Crystal DBA and was its chief executive until Temporal acquired it in September 2025, when he joined Temporal to work on systems for AI applications in production. He earlier co-founded if(we), the company behind the Tagged social network, and holds a Berkeley PhD on distributed systems and serverless computing.

- LinkedIn: https://www.linkedin.com/in/jssmith
- X: https://x.com/jssmith

## What Johann builds

- [Postgres MCP Pro](https://www.anchorterminal.com/tools/postgres-mcp-pro.md), graded F, 37/100, in Databases & files. PostgreSQL server with configurable read/write access plus DBA tooling (index tuning with hypopg, EXPLAIN analysis, top-query and workload analysis, health checks). Crystal DBA founder/former CEO; Postgres MCP Pro contributor; now Temporal, researched 2026-10-27.

## Questions

### Who is Johann Schleier-Smith?

Johann Schleier-Smith founded Crystal DBA and was its chief executive until Temporal acquired it in September 2025, when he joined Temporal to work on systems for AI applications in production. He earlier co-founded if(we), the company behind the Tagged social network, and holds a Berkeley PhD on distributed systems and serverless computing.

### What does Crystal DBA (acquired by Temporal in September 2025) make?

Anchor Terminal lists Postgres MCP Pro from Crystal DBA (acquired by Temporal in September 2025). PostgreSQL server with configurable read/write access plus DBA tooling (index tuning with hypopg, EXPLAIN analysis, top-query and workload analysis, health checks).

### How are Johann's tools graded?

Postgres MCP Pro is graded F, 37 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.

## Sources

- https://temporal.io/blog/temporal-and-the-next-frontier-scaling-ai-reliably
- https://github.com/crystaldba/postgres-mcp
- https://github.com/jssmith
- https://johann.schleier-smith.com/about/
- https://www.linkedin.com/in/jssmith
- https://x.com/jssmith
- https://github.com/crystaldba

These are the people building the tools we list, named for their public role in the company or project behind a listing, from public pages, with the date it was researched. They don't work for Anchor Terminal (our own team is on the about page, /about/#author). We show public roles, public profiles and what the listing pages show, nothing private. To correct something, send an about or a photo, or have a page removed, write to privacy@anchorterminal.com.

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