Blog
The Directionally Local blog
Practical guides to running AI coding agents on hardware you control. We compare open-source agents and sandboxes, show how to keep API keys and spending under control, and explain how to run models locally. Every guide is checked against each tool's own docs and dated, so you know how fresh it is.
Topics: coding agents agent sandboxes API key security local models self-hosting
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What Is an AI Coding Harness? Definition, Parts and an Example
An AI coding harness is the program around a language model that gives it tools, permissions, context and an interface. Here are its parts, and how Autopilot implements each one.
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How to Stop a Coding Agent From Leaking API Keys Through Subagents
Why subagents multiply the risk of leaked API keys, the five controls that stop it, and how to set them up on your own machine with Hotcell.
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Directionally Local vs OpenHands: Self-Hosted Coding Agents
OpenHands and Directionally Local both run coding agents you can self-host. How they differ on sandboxing, API keys, spend limits and models.
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Open-Source Alternatives to Cloud AI Coding Sandboxes (2026)
Hotcell, E2B's open-source runtime, microsandbox, agent-sandbox for Kubernetes and more: self-hostable sandboxes for AI coding agents, compared.
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Agent-Sandbox GitHub: How to Set One Up From Scratch
Set up an agent sandbox from GitHub projects: agentbox or Hotcell on your own machine, and kubernetes-sigs/agent-sandbox for production Kubernetes clusters.
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Coding Agent Open Source Options Compared for 2026
OpenCode, OpenHands, Aider, Cline, Goose, Codex CLI, Pi and Autopilot compared on interface, autonomy, sandboxing and model choice.
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E2B Alternatives That Run Agents in Strict Isolation
Explore the top e2b alternatives including Daytona, Modal, Northflank, and Vercel Sandbox to find the right isolated runtime for your AI agents.
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Agentic Coding with Claude Code: a Starter Guide for Devs
A starter guide to agentic coding with Claude Code: installation, CLAUDE.md, Plan Mode, subagents, MCP and sandboxing, with a review-first workflow.
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Codex Sandbox: How to Run Code Agents Safely in 2026
How the Codex CLI sandbox works: sandbox modes, approval policies, config.toml settings, network access and OS-specific setup on macOS, Linux and Windows.
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Autopilot vs Claude Code, Codex, OpenCode, Cursor and Pi
How Autopilot compares with Claude Code, Codex, OpenCode, Cursor and Pi on model choice, cost visibility, sandboxing and self-hosting.
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Underdog, Nvidia and open weights: big money is moving into local-first AI
a16z backed an AI assistant that runs on your own computer, and Nvidia is buying into open-weight models. What that means for self-hosted coding agents.
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Cloudflare's Deno acquisition is a signal: the local AI stack is becoming the default, not the fallback
Cloudflare acquiring Deno—specifically to improve self-hosting—confirms that self-hostability is becoming a competitive requirement across the AI infrastructure layer.