# Johann Schleier-Smith (slim)

> 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.

- Full: https://www.anchorterminal.com/people/johann-schleier-smith/index.md (~800 tokens) · this version ~580 tokens · JSON https://www.anchorterminal.com/people/johann-schleier-smith/index.json · canonical https://www.anchorterminal.com/people/johann-schleier-smith/
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-27
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

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.

- 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.

### 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).

### 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.