Find the repeated friction
Start with a task ledger and automate only a narrow, reversible step.
Read guide →SMALL SYSTEMS
Small systems that return your time
Narrow, reversible workflows and utilities for independent builders who want less repeated work and clearer operating boundaries.
Browse all articles ↗START HERE
Choose tools from workflow before novelty
Reduce repeated work, secure the boundaries, evaluate the output, and document the operating path.
Add tools behind permissions
Connect CLI skills, MCP, and cloud actions with explicit IAM and rollout limits.
Read guide →Document the safe path
Turn eligibility, region, payment, verification, and recovery into a checkable flow.
Read guide →THE LIBRARY
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What Breaks a Planning Calculator? A Boundary-Test Study of Three Engines
A reproducible test of compound-growth, emergency-fund, and LLM-cost calculators using zero returns, impossible goals, fee math, contribution timing, caching, and exhausted budgets.
AWS Agent Toolkit in the CLI: A Practical Guide to Skills, MCP, IAM, and Safe Rollout
AWS CLI 2.35 adds a guided Agent Toolkit setup for coding agents. This guide explains what it installs, where the security boundary really sits, and how to evaluate it without granting excessive cloud access.
The small tools that save me hours every week
A growing toolbox of simple automations, browser utilities, and scripts for independent developers.
How to Subscribe to ChatGPT on iPhone for Codex: A Safe, Region-Aware Guide
A practical guide to checking Codex eligibility, using Apple Account balance, subscribing in the ChatGPT iOS app, and avoiding region, gift-card, and duplicate-charge problems.