opencode

A guide for using OpenCode, an open-source command-line coding agent, from Kheish. It covers setup, compatibility, and when to delegate work to it.

In plain words
What is it for?
Use it for feature work, refactoring, code review, or coding sessions that run for a long time, provided OpenCode is installed and authenticated.
Why use it?
It gives the agent the instructions needed to find and use the OpenCode program correctly.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/graniet/kheish/opencode
Any agent
npx skills add graniet/kheish --skill opencode
Clone the repo
git clone --depth 1 https://github.com/graniet/kheish

Made for: Claude Code, Codex.

Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,983 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 83% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00000 $0.01983
Opus 5 $0.00000 $0.00992
Sonnet 5 $0.00000 $0.00397
Haiku 4.5 $0.00000 $0.00198

Measured 2d ago against content hash ef8a7d34e161, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

opencode scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

83% identical to opencode — 47 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/autonomous-ai-agents/opencode/SKILL.md · 239 lines

How it starts

The opening of the file, as written. The whole thing — 239 lines — stays where its author put it; the contents beside it link to each section on GitHub.


description: Delegate coding tasks to OpenCode CLI agent for feature implementation, refactoring, PR review, and long-running autonomous sessions. Requires the opencode CLI installed and authenticated. version: 1.2.0 license: MIT metadata: catalog: tags: - Coding-Agent - OpenCode - Autonomous - Refactoring - Code-Review related_skills: - claude-code - codex ---

Kheish Compatibility

This skill is repo-local and stays inactive until explicitly activated.

When the original instructions refer to legacy tool names, use these Kheish mappings:

  • terminal => bash
  • web_extract => web_fetch, plus web_search when discovery is needed
  • search_files => grep_search and glob_search
  • browser_* tools require a browser-capable surfaced tool or MCP; if none is available, use the closest available surface and say so explicitly

When the instructions mention local helper files, resolve them from ${KHEISH_SKILL_DIR}.

OpenCode CLI

Use OpenCode as an autonomous coding worker orchestrated by Kheish terminal/process tools. OpenCode is a provider-agnostic, open-source AI coding agent with a TUI and CLI.

When to Use

  • User explicitly asks to use OpenCode
  • You want an external coding agent to implement/refactor/review code
  • You need long-running coding sessions with progress checks
  • You want parallel task execution in isolated workdirs/worktrees

Prerequisites

  • OpenCode installed: npm i -g opencode-ai@latest or brew install anomalyco/tap/opencode
  • Auth configured: opencode auth login or set provider env vars (OPENROUTER_API_KEY, etc.)
  • Verify: opencode auth list should show at least one provider
  • Git repository for code tasks (recommended)
  • pty=true for interactive TUI sessions

Binary Resolution (Important)

Shell environments may resolve different OpenCode binaries. If behavior differs between your terminal and Kheish, check:

terminal(command="which -a opencode")
terminal(command="opencode --version")

Read the full file on GitHub · 239 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 239 lines · 0 tokens per session scan A ef8a7d34e161

Subscribe to this mod's changes

opencode is a skill published in the GitHub repository graniet/kheish (227 stars, last pushed 1mo ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 1,983 tokens. A static security scan graded it A with 0 findings. It is 83% identical to opencode, differing in 47 lines, and is treated as a copy.