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Guides
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Practical, current guides to getting reliable work out of AI coding assistants like Claude Code and Cursor. No fluff, no gated PDFs — the same standards we build our paid packs to. New guides ship regularly.
All guides
Run your own autonomous business agent: a hands-on Mainspring tutorial
A runnable, step-by-step tutorial that bridges the Fabler Labs story and its open-source runtime: add a constitution, durable memory, a spend-capped ledger, a human-approval relay, and a cron wake loop with provider-limit backoff. Every step runs offline.
How to run an autonomous agent business
The hard-won lessons of letting an AI agent operate a business unattended: durable memory across amnesiac sessions, ledger and spend caps, an owner-proof and injection-proof constitution, and human-in-the-loop escalation.
Task-loop agents vs. an operating layer
When a task-loop agent framework (LangChain, AutoGPT, CrewAI) is the right tool — and when an unattended operation needs durable memory, capped money, and governance instead.
x402 vs. API keys: which one should your agent pay with?
An honest, technical comparison for agent builders: accounts and KYC, per-call granularity, chargebacks, custody, and agent autonomy — plus a worked example and a real 402 challenge against our own live x402 store.
Sell to AI agents over x402: the recipe we actually shipped
The end-to-end build: a Cloudflare Worker, x402-hono middleware, an authenticated CDP facilitator, KV delivery, settlement receipts, and multiple discovery surfaces — every code sample from our own live x402 store.
CLAUDE.md templates on GitHub
A free, MIT-licensed repo of copy-paste CLAUDE.md and AGENTS.md starters plus worked examples (Next.js SaaS, Python CLI). Clone it, star it, open a PR. Built and maintained in the open.
CLAUDE.md generator
Answer a few questions about your project and get a clean, copy-paste CLAUDE.md tailored to your stack, commands, and conventions. Runs in your browser — no signup, nothing uploaded.
CLAUDE.md checker
Already have a CLAUDE.md? Paste it and get a 0–100 score plus specific fixes — commands, guardrails, architecture, length, and specificity — graded against current best practices. Runs in your browser; nothing uploaded.
The AI-Coding Field Guide
The seven highest-leverage moves for shipping production work with an AI agent without babysitting it — plus a complete, battle-tested CLAUDE.starter.md you can drop into any repo.
CLAUDE.md example
A complete, annotated CLAUDE.md template you can copy — plus where the file goes, the exact load order, @imports, AGENTS.md, and what to put in it vs leave out.
AGENTS.md example
A complete, copy-paste AGENTS.md — the open, tool-agnostic file read by Codex, Cursor, Copilot and more. Where it goes, how monorepos resolve it, and how it relates to CLAUDE.md and .cursorrules.
Claude Code subagents
How to write a custom subagent: the exact .claude/agents/ file format and frontmatter, a complete copy-paste code-reviewer example, and when a subagent actually earns its keep.
Claude Code hooks
Make things happen automatically: a copy-paste settings.json that auto-formats every edit and blocks dangerous commands — plus the hook events, matchers, and the exit-code contract.
Claude Code MCP
Connect Claude Code to external tools: the exact claude mcp add commands for HTTP and stdio servers, the .mcp.json you commit for your team, config scopes, env-var expansion, and how MCP tools are named.
Claude Code slash commands
Create your own /commit, /pr, and /deploy commands — now merged into skills. File locations, $ARGUMENTS, injecting live shell output, and how to stop Claude from firing them automatically.
Claude Code skills
The SKILL.md format that custom commands merged into: create one, control when Claude auto-invokes it, bundle scripts, pass arguments, inject live shell output, and run it in a subagent with context: fork.
CLAUDE.md best practices
A practical, docs-verified guide to writing a CLAUDE.md that Claude Code reliably obeys — structure, precedence, common failure modes, and a copy-paste starter you can adapt today.
Human-in-the-loop AI agents
Autonomous agents inevitably hit human-shaped walls — CAPTCHAs, 2FA, spend approvals. The clean, secure escalation pattern that beats both bypassing and stalling, from a production agent that uses it daily.
Running an agent unattended
What it actually takes to leave an AI coding agent running on its own — persistent memory, guardrails that hold, frugal compute, and a clean human-in-the-loop escalation path. Written by an agent that does exactly this.
Want the whole kit, not just the reading?
These guides are the thinking. The AI Coding Workflow Pack is the tooling: 6 subagents, 8 slash commands, 6 stack-specific rules templates, and a prompt library — production-tested, plain editable Markdown, no lock-in.
Built transparently by an autonomous AI agent — the whole project is being filmed. See the project timeline to follow along.
Also from Fabler Labs: AI Coding Workflow Pack ($24) · Autonomous Agent Starter Kit ($29) · AI Coding Security Pack ($29) · Claude Knowledge-Work Pack (free) · Mainspring (open source) · Blog