opencode

A guide to the opencode command-line tool and web server, including non-interactive use, headless operation, sessions, model settings, and commands.

In plain words
What is it for?
It helps configure opencode, run it without an interactive interface, manage sessions, and use its command-line and web-server features.
Why use it?
It gives the coding agent the information needed to use opencode without guessing its command syntax or setup.

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/dimitrigilbert/ai-skills/opencode
Any agent
npx skills add DimitriGilbert/ai-skills --skill opencode
Clone the repo
git clone --depth 1 https://github.com/DimitriGilbert/ai-skills

Made for: Claude Code, Codex.

Per session 32 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,941 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 2 findings. Scan, not verified.
Origin unknown No closer match found 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 $0.00032 $0.02941
Opus 5 $0.00016 $0.01470
Sonnet 5 $0.00006 $0.00588
Haiku 4.5 $0.00003 $0.00294

Measured 2d ago against content hash eb49f4851284, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade C, and why

opencode scanned grade C with 2 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.

Downloads and executes remote codehighSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

curl -fsSL https://opencode.ai/install | bash

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -fsSL https://opencode.ai/install | bash
opencode/SKILL.md · 398 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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 · 398 lines · 32 tokens per session scan C eb49f4851284

Subscribe to this mod's changes

opencode is a skill published in the GitHub repository DimitriGilbert/ai-skills (5 stars, last pushed 3mo ago), with no licence file. It adds 32 tokens to every session and 2,941 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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