Templates
Free templates for real work
44 templates for jobs you do anyway: the month-end report, the PRD, the release checklist, the cash-flow forecast. Each one opens in a tool in your browser with the work already set up, runs as it is, and links to the lesson behind it. Use them without an account; a free account saves your work and exports it.
SQL Lab
Open the SQL LabMonthly sales report
Revenue, orders and average order value per month, with the change on the month before.
Cohort retention
Customers grouped by the month of their first order: how many come back in each later month.
Data-quality checks
Duplicates, missing values, orphans and impossible values, each as one row with a count.
Schema design for a new feature
Tables, keys and constraints for a new feature, sample rows, and the queries the feature needs.
Code Lab
Open the Code LabUtility script
A small script with its options at the top, input checks, a summary line and tests.
API client with retries
A fetch wrapper with a timeout, retries with growing waits, and errors that say what failed.
CSV cleaner
Read a CSV, trim and fix values, drop broken rows with a reason, and write clean CSV back.
Unit-test starter
A function with a test file: the happy path, the edges and the errors, grouped and named clearly.
System Design Studio
Open the System Design StudioArchitecture review
Today's design on the board with the questions a review asks as notes, and criteria for the targets you must keep.
Capacity plan
Expected peak traffic, a sized design and Find my limit, with headroom and cost per month as criteria.
Incident post-mortem diagram
The system as it was, the failing part in a red zone, a timeline in notes and a criterion that proves the fix.
Data Lab
Open the Data LabKPI dashboard notebook
Weekly revenue, orders, average basket and active customers, with a chart per KPI.
A/B test readout
Conversion per variant, the lift, a confidence interval and a plain-language verdict.
Simple forecast
A trend plus weekly pattern fitted to daily sales, the next 4 weeks forecast and a check against the last weeks.
Product & BA Lab
Open the Product & BA LabPRD for a new feature
Problem with numbers, users, goals and non-goals, measurable metrics with a guardrail, user stories with acceptance criteria, scope, risks and launch.
Sprint plan
People, days off and focus factor, a sprint goal, the stories that carry it, a burndown preview and a board.
Process map: as-is and to-be
A swimlane map with lanes per team, decisions with labelled outcomes and a validator; the today and the proposed process side by side.
Backlog prioritisation (RICE and MoSCoW)
Reach, impact, confidence and effort for every item, a MoSCoW board, and why for every number.
Requirements traceability matrix
Requirements, user stories and test cases, linked, with every coverage gap highlighted.
Security Lab
Open the Security LabThreat model checklist
STRIDE questions for one feature as data, with tests that every threat has an owner and a mitigation.
Password policy checker
Length, breached-list and repeat checks in one function, with tests for the policy you agree.
Log triage
Parse auth log lines, group failures by account and address, and flag brute force and spraying.
QA Lab
Open the QA LabTest plan
Scope, risks, environments and entry/exit criteria as data, with checks that every risk has tests.
Regression suite
Tests grouped by feature with a smoke tag, a fixture builder and a test for every bug fixed before.
Bug-report template
A bug report as data (steps, expected, actual, severity) with a failing test that reproduces it.
DevOps & TechOps Lab
Open the DevOps & TechOps LabRelease checklist
Before, during and after a deploy: owners, go/no-go checks and the rollback trigger, as a checklist.
Runbook
Symptoms, first checks with commands, fixes and when to escalate, for one alert.
Pipeline template
Build with a dependency cache, unit and end-to-end tests, then staging and production gated on the tests.
AI Lab
Open the AI LabPrompt review
A support prompt in parts (role, task, context, rules, format, an example) that passes the linter, with its token count and cost.
Eval set for a chatbot
Replies a bot really gave, labelled good or bad, and checks that agree with every label, exportable as CSV.
Structured output with a schema
An extraction prompt, the JSON Schema its replies must follow, and sample replies that should and should not pass.
RAG chunking for a help page
A help page cut into chunks under a token budget, with questions that must find their answer in the top results.
Agent flow with guardrails
An order-status agent with a step limit, input and output guardrails and read-only tools, that passes the validator.
Cost estimate for an AI feature
A prompt, the expected reply length and traffic, and what it costs per call, per day and per month on each model.
Finance Lab
Open the Finance LabMonthly budget against actual
Budget, actual and the variance in money and percent per line, which lines are over, and the biggest overrun.
Unit economics of an order
What one order earns after delivery, packaging and payment fees, and the contribution margin.
Break-even for a new site
Fixed costs, contribution per order, the orders a day to break even, profit and the safety margin.
LTV and CAC
What a customer or member is worth, what one costs to win, LTV ÷ CAC and the payback months.
12-month cash-flow forecast
Assumptions on one sheet, a month-by-month forecast on another, and the lowest cash point.
Loan payments
The monthly payment (PMT), the total interest and the balance after two years.
NPV and IRR business case
An investment and its yearly savings: NPV, IRR, a decision and the payback year.
Cloud cost model
A price list and a monthly bill on two sheets, with reserved discounts, storage tiers and a CDN, and the cost per order.
Pricing calculator
A price from cost and target margin, rounded to .99, with demand that falls as the price rises.
Simple DCF
Five years of free cash flow, a terminal value and the enterprise value.