How to Use LLMs for Free: OpenCode 2 Built-in Models and OpenRouter
Install OpenCode 2, select a built-in free model, and complete your first everyday task. Connect OpenRouter later if you want more models or a free API for your own application.
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17 postsLearning from Mature Coding Agents (39): Two Rules for Flicker-Free Tool Result Display in TUIs
Four coding agent TUIs all follow the same two rules: tools maintain constant height (one-line summary, never jumping from 0 to N lines) and never auto-collapse (only user-initiated expand/collapse). looplane violates both.
Learning Design from Mature Coding Agents (38): Agent as a Service — Wrapping Your Loop in Something Other Programs Can Call
looplane now has a Cloudflare Durable Object run resource with async creation, status/cancel/artifacts, live NDJSON, and Last-Event-ID SSE; remote approvals use a separate short-lived capability. Python also provides an attach client and a stateful conversation WebSocket. Production deployment, cross-runtime parity, and full multi-tenant hardening remain unverified.
Learning Design from Mature Coding Agents (37): Code Mode — Compiling Tool Calls into Batches of Executable Code
looplane now ships a bounded tool-program DSL: read-only programs support list/read/search/diff, repeat, and if_contains; modify/check transactions receive whole-transaction approval and roll back touched paths on failure. This is not arbitrary JavaScript/Python code mode, and transaction execution is not parallel.
Hooks, Skills, Plugins: The Three-Layer Extension System of Mature Coding Agents
Hooks govern control flow, skills inject knowledge, and plugins package both. looplane now has opt-in deny-only project hooks, a bounded SKILL.md loader, exact enabled_skills selection, plugin manifests/install/list, and external-runtime projection. Input rewriting, full lifecycle coverage, remote registries, and a mature marketplace remain open.
Learning Design from Mature Coding Agents (36): LSP Integration — Pushing Compiler Diagnostics into Agent Context
looplane can now inject repository diagnostics and open-file state into the next model turn, push typed IDE context over WebSocket, package a VS Code bridge, and supervise long-lived LSP subprocesses through ManagedLspServer. Language-specific initialize/didOpen/didChange adapters and live-editor validation remain open.
CLI Agent and IDE Sandbox Integration
The local products post (order 6) of the Sandbox Series. How OpenCode, Codex CLI, Cursor and other CLI agents and IDEs set up local sandboxes, where the isolation boundary lies, common pitfalls, and security best practices.
Learning from Mature Coding Agents (13): CLI Ergonomics — Make New Tools Feel Already Familiar
Mature coding-agent CLIs have converged on the same conventions: positional prompt, -p means print, exec is headless, resume is a first-class command, -C changes directory; looplane inherits this vocabulary directly, driving learning cost close to zero.
Learning from Mature Coding Agents (14): Onboarding Design — Provider-Aware Init and Instant Verification
A blank config file drives people away; a bad credential discovered too late drives them away faster. All five mature agents treat setup as a first-class state, and looplane adds the step most of them skip: verify the key right after saving it.
Learning Design from Mature Coding Agents (15): From Full-Screen TUI to Semantic Transcript
Mature coding agent TUIs never print the event stream directly — they build a typed projection layer first and update it in place. looplane took three steps (full-screen composition, runtime-first dual modes, removing the Ask/Agent split) before two old constraints — non-streaming output and resume-without-replay — were truly lifted.
The H2 2026 Harness War: Eight Frameworks Rewriting, Three Model Makers Entering, 110+ CLIs — How to Make Sense of It
In August 2026, it's not just five frameworks moving. Beyond OMP 2, Pi v2, Opencode 2, dsh, and Claude Code, three model makers — Google (Antigravity CLI), Meta (Muse Code), and xAI (Grok Build) — are building coding agents directly. Add Amp, Cline 2.0, and the Codex CLI Rust rewrite, and eight-plus frameworks are undergoing architecture-level changes simultaneously. Factor in 110+ total CLI tools, and H2 2026 is a divergence period for harness methodology. This article analyzes four architectural approaches, one shared direction, and one emerging trust crisis.
Opencode 2: The Cost of Swapping Bun for Node, Tauri for Electron, and Rebuilding the Entire API
Opencode 2 is a major rewrite led by Anomaly (Dax Raad). Runtime migrated from Bun to Node.js (memory issues), desktop from Tauri to Electron (WebKit perf and Node integration), v1 API intentionally incompatible. New: multi-tab parallel sessions, persistent backend service, HTTP API and CLI integration. The current CLI package is @opencode/cli and the command remains opencode. Built-in free models are available alongside paid Console and Go options.
oh-my-openagent: A Multi-Model Agent Team Framework That Replaces Single-LLM Coding
oh-my-openagent (OmO) transforms OpenCode from a single-LLM tool into a multi-model agent team — Opus as the workhorse, GPT-5.2 as the architect, Gemini for frontend, Sonnet for documentation lookup — all triggered to run in parallel with a single ultrawork keyword. With 48K stars, it is the earliest project in the UltraWorkers ecosystem to establish the multi-agent coding pattern.
OpenCode Full Analysis: An Open-Source Terminal Agent Supporting 75+ Model Providers
OpenCode is a free, open-source TypeScript CLI agent (MIT). It supports 75+ model providers including local Ollama, can connect external providers and supported subscription plans, and lets you switch models mid-session. There is also a desktop app, built-in free models, and an optional Console service.
Agent CLI Subscription Plans Compared: Building a Flexible Multi-Model Routing Strategy
A comparison of six agent CLI subscriptions (Claude Code, Cursor CLI, Codex, Kiro, Antigravity/Gemini CLI, OpenCode) plus the multi-model routing pattern — cheap models for simple work, strong models for hard work. Nearly every one of these changed its billing in the first half of 2026; this version was re-verified on 8/18.
The Complete Guide to Agent CLIs: Design Logic, Tool Comparison, and Best Practices
Agent CLIs are not smarter autocomplete tools -- they are AI agents that can read your codebase, execute multi-step tasks, and operate in real environments. Claude Code, Codex CLI, Gemini CLI, OpenCode, Aider, Pi, Kiro, Amp, Cursor CLI... the tools keep multiplying, but they all share a common set of design principles -- understanding these principles is how you actually get good at using them.
OpenCode: A Complete Guide to the Open-Source AI Terminal Coding Agent
OpenCode is an open-source AI coding agent written in TypeScript (MIT, repo at anomalyco/opencode) with a built-in TUI, 75+ LLM providers, LSP integration, a Vim-style editor, SQLite session management, and a desktop app. The tool is free; native free models and paid or local providers are separate choices.