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Nico Ritschel

@nicoritschel.com
5.7K followers 1.3K following 2.6K posts

sidequery.dev @sidequery.dev Data/Product/Engineering atm.com nicoritschel.com

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Nico Ritschel @nicoritschel.com · 15/03/2026
Now you can use mdnb as a Claude Code plan editor. Highlight ranges of the plan & leave comments for Claude to address
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Nico Ritschel @nicoritschel.com · 28/02/2026
mdnb is moving so fast that changes can be hard to follow Here's the changelog from the past week: - built-in Git sync with GitHub sign-in - added an integrated terminal - improved folder navigation and editor formatting tools - major performance gains for startup and large note libraries
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Nico Ritschel @nicoritschel.com · 27/02/2026
mdnb.app now has themes, Ghostty terminal built in & an optional formatting bar
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Nico Ritschel @nicoritschel.com · 19/02/2026
I wrote some thoughts on memory in coding agents, a surprisingly neglected area for LLM memory? (Zero AI was used to write the thoughts)
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Nico Ritschel @nicoritschel.com · 15/02/2026
😉
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Nico Ritschel @nicoritschel.com · 13/02/2026
It's been a lot of fun building on automerge from @inkandswitch.com
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Nico Ritschel @nicoritschel.com · 11/02/2026
Real time collaboration prototype for mdnb
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Nico Ritschel @nicoritschel.com · 10/02/2026
I did a whole new site for the umbrella, sidequery.dev
sidequery.dev
Sidequery — Notebooks for Mac
Sidequery builds native Mac notebooks for SQL, Python, and Markdown. Fast, local, privacy-first.
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Nico Ritschel @nicoritschel.com · 09/02/2026
mdnb.app & pynb.app got new icons 💅
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Nico Ritschel @nicoritschel.com · 07/02/2026
I built a free, 100% native (for macOS) markdown editor. You can download it here
mdnb.app
mdnb — A Markdown Notebook for macOS
A native macOS notebook app. Your notes are plain Markdown files on disk, yours forever. Free.
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Nico Ritschel @nicoritschel.com · 02/02/2026
I've been using Claude Code since May & use Codex actively. Here's some of my thoughts on software engineering with AI
nicoritschel.com
When Software Engineers Don't Look at the Software
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Nico Ritschel @nicoritschel.com · 02/02/2026
I forked everyone's favorite terminal, Ghostty, and added git worktree support so to better manage parallel AI agents
ghostree.dev
ghostree — Worktree-Aware Terminal for Ghostty
Worktree-aware terminal management for Ghostty. Switch branches, manage worktrees, and keep your terminal sessions organized.
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Nico Ritschel @nicoritschel.com · 27/01/2026
pynb was featured by tldr today!
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Nico Ritschel @nicoritschel.com · 24/01/2026
Ghostty is now natively integrated into pynb.app
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Nico Ritschel @nicoritschel.com · 23/01/2026
Another day, another release. pynb.app just got native connectivity for Postgres, Snowflake, Bigquery, SQLite & Flight SQL via ADBC (so it's fast and memory efficient)
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Nico Ritschel @nicoritschel.com · 20/01/2026
You can try this out now!
pynb.dev
pynb — Python Notebooks Without the Fuss
Python notebooks without the fuss. Fast, local notebooks for data science and machine learning. Privacy-first.
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Nico Ritschel @nicoritschel.com · 19/01/2026
I was wondering where all the stars were coming from thanks for the shoutout!
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Nico Ritschel @nicoritschel.com · 18/01/2026
I built an alternative Jupyter frontend as a native Mac app. It's also reactive (no weird state issues), supports SQL as first class, has autocomplete, is uv-native amd works with agents (like an *existing* ChatGPT subscription that you already pay for)
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Nico Ritschel @nicoritschel.com · 11/01/2026
Hi data friends that manage data pipelines & like Apache Iceberg— please take a look at my dlt destination for Iceberg that supports REST catalogs. Got some updates so it has full parity with the paid dlthub connector!
github.com
GitHub - sidequery/dlt-iceberg: An Iceberg destination for DLT that supports REST catalogs
An Iceberg destination for DLT that supports REST catalogs - sidequery/dlt-iceberg
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Nico Ritschel @nicoritschel.com · 08/01/2026
I've been working on a universal metrics layer for @sidequery.dev the past few months that works with many different semantic layer formats. I built a demo so you can try it out. Runs 100% in the browser (via DuckDB & Pyodide). Warning large download !
sidemantic.com
Sidemantic Metrics View Demo
Interactive demo of Sidemantic metrics visualization with OpenRTB auction data.
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Nico Ritschel @nicoritschel.com · 05/01/2026
Now includes an instructions improver skill that lets your agent of choice search through your past transcripts to correct common failures & reinforce wins
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Nico Ritschel @nicoritschel.com · 05/01/2026
Lots of improvements to this one... dark mode, gist backend, homebrew support for installation. brew install nicosuave/tap/agentexport
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Nico Ritschel @nicoritschel.com · 03/01/2026
I built a few tools to make working with Claude Code / Codex CLI easier First up is agentexports.com which lets you publish transcripts to the web. Content is end to end encrypted (I can't even read it) and you can self host on Cloudflare if preferred.
agentexports.com
agentexport
Share Claude Code and Codex transcripts. No signup required.
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Nico Ritschel @nicoritschel.com · 31/12/2025
👀
app.sidequery.ai
2025 USGS Earthquake Year in Review
A Tufte-style minimalist visualization of global seismic activity in 2025, featuring the historic Kamchatka M8.8 sequence
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Nico Ritschel @nicoritschel.com · 29/12/2025
Track your Claude Code usage with DuckDB (it's much faster than ccusage)
gist.github.com
Claude Code Usage via DuckDB
Claude Code Usage via DuckDB. GitHub Gist: instantly share code, notes, and snippets.
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Nico Ritschel @nicoritschel.com · 22/12/2025
I find Claude Code pretty effective to help with data analysis. But it's not easy for everyone to setup and manage & has no collaborative capabilities. So I built it into a Slack app.
sidequery.ai
AI Agents for Data in Slack, ChatGPT & Claude
Connect Snowflake, BigQuery, Postgres, Google Sheets and more.
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Nico Ritschel @nicoritschel.com · 09/12/2025
Been busy lately; I built a DuckDB extension that embeds Claude Code inside DuckDB
sidequery.dev
No SQL, No Problem — Sidequery Blog
Agents used to be an enterprise feature. Even today, it's not uncommon for some tools to charge an extra monthly fee for AI add ons. But savvy users expect natural language interfaces as a default, no...
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Nico Ritschel @nicoritschel.com · 11/11/2025
Crazy this account / PDS still runs on a free tier Oracle Cloud server
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Nico Ritschel @nicoritschel.com · 07/10/2025
I've been working on a universal semantic layer. It's still a bit early but I'm really excited about its future. Will also be tightly woven into @sidequery.dev Compatible with definitions from Cube, MetricFlow (dbt), LookML (Looker), Hex, Rill, Superset, Omni & there's a native definition format.
sidemantic.com
Sidemantic
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Nico Ritschel @nicoritschel.com · 24/09/2025
The big 3 agent CLIs all have support in @sidequery.dev
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Nico Ritschel @nicoritschel.com · 18/09/2025
Anyone on here into risk analytics / underwriting for alternative lending? DM or email me nico@atm.com
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Nico Ritschel @nicoritschel.com · 15/09/2025
I wrote a blog post on the @sidequery.dev blog, check it out
sidequery.dev
Sidequery Blog — Product updates, SQL notebooks, DuckDB
Updates from Sidequery: SQL analytics notebooks, DuckDB, data tooling, and agent workflows.
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Nico Ritschel @nicoritschel.com · 26/08/2025
New marketing site (and focus) for @sidequery.dev A native macOS app
sidequery.dev
Sidequery - SQL Analytics Notebooks
Fast, local SQL analytics notebooks for Mac. Analyze millions of rows from CSV/Parquet/JSON with DuckDB, Postgres & MySQL. Beautiful charts by default. Privacy-first.
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Nico Ritschel @nicoritschel.com · 08/07/2025
V pleased with my new hiddenbar setup. No more menubar junk
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Nico Ritschel @nicoritschel.com · 30/06/2025
Er, how was your weekend?
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Nico Ritschel @nicoritschel.com · 23/06/2025
I got a commercial where a lady just kept repeating “Churu” and my cats were disappointed to say the least
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Nico Ritschel @nicoritschel.com · 17/06/2025
Seems legit lmao
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Nico Ritschel @nicoritschel.com · 14/06/2025
Why is it that every time I take a day off I get 5x the new Slack conversations compared to a normal day?
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Nico Ritschel @nicoritschel.com · 10/06/2025
One of my cats is named Jerry. Every time I say his name, my phone activates Siri 🙄
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Nico Ritschel @nicoritschel.com · 09/06/2025
On Saturday, I built a DuckDB extension that embeds a v8 javascript runtime and exposes a few table functions. You can pass arbitrary js code & natural language prompts for which js code is generated and ran.
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Nico Ritschel @nicoritschel.com · 04/06/2025
orthogonal
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Nico Ritschel @nicoritschel.com · 04/06/2025
As I sit here while the clock crosses 6am, I realize I am now running on permanent cat time
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Nico Ritschel @nicoritschel.com · 02/06/2025
Love how my cats know to wait until I'm on a call to jump on the counter / dining table...
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Nico Ritschel @nicoritschel.com · 02/06/2025
Have been busy lately; chipping away at this new SQL notebook UI for @sidequery.dev Here's CTE ejection for times when you need a little more intermediary inspectability!
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Nico Ritschel @nicoritschel.com · 02/06/2025
In a new boba shop and there’s only kiosk ordering
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Nico Ritschel @nicoritschel.com · 01/06/2025
Checks notes registry.terraform.io/providers/co...
registry.terraform.io
Terraform Registry
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Nico Ritschel @nicoritschel.com · 29/05/2025
Claude Code isn't perfect by any means, but it's magical connecting to a playwright mcp server and letting the LLM reproduce frontend bugs, fix them, then check work
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Nico Ritschel @nicoritschel.com · 27/05/2025
Why waste time read lot word when few word do trick
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Nico Ritschel @nicoritschel.com · 27/05/2025
Nissan Altima energy (entering through the exit gate of a parking structure)
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Nico Ritschel @nicoritschel.com · 26/05/2025
People talk smack on GCP heavyweight project setup but have you ever used Azure? Holy shit feels like I'm in 1998 crossed with Temu this is egregious
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