Why Your Spend Limit Doesn't Survive a Fresh CI Checkout
A per-day API spend cap enforced in code still failed, because every scheduled run started from a clean checkout with no memory of prior spend.
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Blog · Tag
Claude Code
Articles exploring claude-code through the lens of behavioral science and experimentation. Practical frameworks for growth leaders who measure in revenue, not vanity metrics.
19 articles
When Prompt Caching Costs You More Than It Saves
Prompt caching is supposed to be free money. On calls spaced further apart than the cache actually lasts, it's a straight surcharge with nothing recouping it.
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The Env Var That Secretly Tripled Our AI Coding Bill
We named our cost-control setting something that collided with Claude Code's own environment. Every automated run quietly inherited the most expensive option.
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The Cheapest Way to Run Scheduled Claude Jobs Isn't the API
A twice-daily job billed against the API drained an account balance for days. Moving it to a subscription runner fixed the bill and the blind spot it created.
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Why AI Coding Agents Keep Duplicating Your API Keys
Isolated AI coding sessions can't see your main .env file, so they quietly mint duplicate API keys instead of asking. The mechanism, diagnostic, and fix.
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Why Trusting an AI Assistant's Memory Is the Wrong Default (And What to Check Instead)
An AI assistant answers fluently whether a fact is current or stale. Here's the rule for knowing what to verify live instead of trusting memory.
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How to Get Your AI Coding Assistant to Catch Its Own Mistakes Before You Do
The AI that wrote your draft is the worst reviewer of it. Here's the independent-review technique that catches what a second read-through misses.
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The Action-Velocity Signal: Why Raw Token Counts Lie About AI Agent Costs
Token totals and dollar totals are the metrics everyone reaches for first when auditing AI agent spend — and they are frequently the wrong ones. A better diagnostic, and a portfolio-style framework for model selection.
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The Three-Layer Audit: How to Actually Verify an AI Coding Agent Before You Trust It
Most people accept an AI agent’s first answer. A three-layer audit — primary-source check, realistic-input test, goal re-derivation — catches what pattern-matching misses.
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The Habits That Actually Make Claude Code Reliable
Most Claude Code advice focuses on the prompt. The habits that actually determine reliable output are upstream of that — and they're the same ones Anthropic's own documentation recommends and the tool's creator uses daily. Here's where those two sources agree, why it works mechanically, and what to actually do about it.
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The New Claude Code Features Most People Are Still Ignoring
Most Claude Code advice — including Anthropic's own conference talks — describes a tool that no longer exists. Six changes actually change how you should work: rewind, auto mode, background subagents, worktrees, agent teams, and adversarial review.
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Why a Model Router Won't Save Your AI Coding Budget (And What Actually Does)
The dream of a 'master orchestrator' that auto-picks the cheapest model that can do each coding task is a research spiral, not a shortcut.
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Claude Code vs Codex vs Cursor: A Task-by-Task Buyer's Guide (2026)
There's no single best AI coding tool — the largest study of real merged pull requests found no universal winner.
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How to Near-One-Shot a Feature
One-shotting a feature with AI isn't luck — it's a method. The goal isn't the prettiest first draft; it's the fewest total tokens to a change that compiles…
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How to Save Tokens With Claude Code Without Making It Dumber
Most token-saving advice for Claude Code quietly makes the agent worse — starve its context or drop to a cheap model and you pay for the retries.
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Which AI Model Should You Actually Use to Build Software? (Hint: It's not the cheapest one)
Token price and benchmark scores are the wrong scoreboard for choosing an AI coding model.
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Claude Code Hooks: Automating Your Development Workflow
Master Claude Code hooks to automate your development workflow. Learn how to configure pre-commit, post-commit, and custom hooks.
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How to Use MCP Servers to Extend Claude Code's Capabilities
Learn how to use MCP servers to extend Claude Code with custom tools, database access, and API integrations for your development workflow.
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Why I Switched From Cursor to Claude Code (And What I Miss)
An honest comparison of Cursor and Claude Code after months of daily use. Different tools for different workflows, and why I landed where I did.
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