Video tutorials

Short videos, about a minute each, on the ZLens YouTube channel. Each one shows a single task from start to finish. The docs page linked under each video has the same steps as text.

New to ZLens? Watch the 90-second film, then the four Quick Start videos in order.

The videos were recorded on ZLens 0.2.x. Where a screen has changed since, the note under the video says what is different now.

Start here

The whole idea in 90 seconds.

Video · 1:30ZLens: certified agentic analytics, explained in 90 secondsThe end card omits the folder name: run npx create-zlens-app@latest my-analytics, or start with the Quickstart.Read the steps

Quick Start

From install to your first trusted answer, on the Jaffle Shop sample or your own data. Play all on YouTube

Video · 0:52Install ZLens in 1 minuteRead the steps

Video · 1:05Guided Setup and your first queryOn the sample, Setup now opens on Open an existing ZLens project: just click Continue to credentials.Read the steps

Video · 1:07Connect an AI model and ask your first questionRecorded on 0.2.2: "Governed answer" is now "Answer from Metrics", and "block" is now "saved query".Read the steps

Video · 1:10Use your own data, with or without dbtThis video says "Governed"; the label is now "From Metrics".Read the steps

Notebooks

SQL, charts, inputs and AI in one file you share and review in git. Play all on YouTube

Video · 1:09Your first research notebookRecorded on 0.2.2: "block" is now "saved query" in the app.Read the steps

Video · 1:01Every cell typeRecorded on 0.2.2: "block" is now "saved query" in the app.Read the steps

Video · 0:54Inputs and local dataRead the steps

Video · 0:58From result to chartRead the steps

Video · 0:51Notebook AIRecorded on 0.2.2: the per-cell button now reads Replace cell & run.Read the steps

Video · 1:04Is this worth keeping? Save it for reviewRecorded on 0.2.2: Save Block is now Save as saved query.Read the steps

Saved queries and certification

Saved queries your team can trust, and how a person certifies them. Play all on YouTube

Video · 0:57Why certified saved queriesRecorded on 0.2.2: Blocks are now Saved queries, and Apps say All tiles certified.Read the steps

Video · 0:59Import your SQLRecorded on 0.2.2: "block" is now "saved query" in the app.Read the steps

Video · 0:55Inside the saved query editorRecorded on 0.2.2: "block" is now "saved query" in the app.Read the steps

Video · 0:52Tests, the promises your data keepsRecorded on 0.2.2: messages now say "saved query" instead of "block".Read the steps

Video · 1:00Certify, change, retireRecorded on 0.2.2: messages now say "saved query" instead of "block".Read the steps

Ask and trust

How Ask picks a source, what each label means, and when it refuses. Play all on YouTube

Video · 0:51Read every trust labelRecorded on 0.2.2: "Governed answer" is now "Answer from Metrics", and "block" is now "saved query".Read the steps

Video · 0:46How it was answeredRecorded on 0.2.2: "Governed answer" is now "Answer from Metrics", and "block" is now "saved query".Read the steps

Video · 0:50From AI answer to certifiedRecorded on 0.2.2: "Governed answer" is now "Answer from Metrics", and "block" is now "saved query".Read the steps

Video · 0:47When Ask says noRecorded on 0.2.2: "Governed answer" is now "Answer from Metrics", and "block" is now "saved query".Read the steps

Video · 0:41Steer Ask: scope, thinking and follow-upsRecorded on 0.2.2: "Governed answer" is now "Answer from Metrics", and "block" is now "saved query".Read the steps

Video · 0:41Keep and trace every answerRecorded on 0.2.2: "Governed answer" is now "Answer from Metrics", and "block" is now "saved query".Read the steps

Semantic layer

Define a metric once, and certify how tables join. Play all on YouTube

Video · 1:00Define a metric onceThis video says "Governed"; the label is now "From Metrics".Read the steps

Video · 0:58Where metrics runSince this recording, the built-in compiler also runs derived metrics that do plain arithmetic over simple metrics.Read the steps

Video · 0:48Safe joins: stop counting rows twiceThis video says "Governed"; the label is now "From Metrics".Read the steps

Video · 1:04Certify your joinsThis video says "Governed"; the label is now "From Metrics".Read the steps

Lineage

Trace a number to its source, and see what a change will break. Play all on YouTube

Video · 0:49Trace a number to its sourceRecorded on 0.2.2: the Blocks tab and DQL Block card are now Saved queries and Saved query.Read the steps

Video · 0:45Before you change a modelRead the steps

Video · 0:46Lineage everywhereRead the steps

Share and review with git

Review data work like code, without learning git commands. Play all on YouTube

Video · 0:41What goes into gitRead the steps

Video · 0:41See what changedRead the steps

Video · 0:40Share for reviewRead the steps

Video · 0:38Get updatesRead the steps

Your AI agent + ZLens

Use ZLens from Claude Code, Claude Desktop, Codex and Cursor. Play all on YouTube

Video · 0:51Why connect your agentRecorded on 0.2.2: since 0.2.6 there is a third label, From Metrics, and Block Studio is now Saved queries.Read the steps

Video · 0:50Connect Claude CodeRunning zlens on its own needs the global install; in a project, run npm exec -- zlens.Read the steps

Video · 1:10Claude Desktop: certified answers in your chatRead the steps

Video · 0:41Codex and CursorRead the steps

Video · 0:49What your agent can and can't doRecorded on 0.2.2: Block Studio is now the saved query editor.Read the steps

Evals and CI

Test your AI answers like code, on every pull request. Play all on YouTube

Video · 0:49Test your answersRead the steps

Video · 0:47A check on every pull requestRecorded on 0.2.2: since 0.2.3, npx zlens ci init writes this workflow for you, pinned to your ZLens version.Read the steps

Video · 0:50Test the real answersRead the steps

Apps

Dashboards that show their proof. Play all on YouTube

Video · 0:47Read an App: every tile has a receiptRead the steps

Video · 1:31Start with the data, not the chartRead the steps

Video · 0:49Quick start: an App in three choices, no AIRead the steps

Video · 1:32Filters that say which tiles they reachRead the steps

Video · 1:04Publish, and certify what's missing on the spotRead the steps

Video · 0:46When a saved query changes, it loses its certificationRead the steps

Video · 0:56Ask questions inside an AppRead the steps