opencode-permissions

Instructions for configuring OpenCode's permission rules, which decide whether tool actions run automatically, ask for approval, or are blocked.

In plain words
What is it for?
Use it to set global or per-tool permissions, restrict shell commands, control directory access, or configure permissions for individual agents.
Why use it?
It helps control what the coding agent may do and prevents unwanted commands or file changes.

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/timmy6942025/opencode-builder-skill/opencode-permissions
Any agent
npx skills add Timmy6942025/opencode-builder-skill --skill opencode-permissions
Clone the repo
git clone --depth 1 https://github.com/Timmy6942025/opencode-builder-skill

Made for: Claude Code, Codex.

Per session 67 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,918 The whole file, excluding the scripts and references it only reads on demand.
Security scan D 2 findings. Scan, not verified.
Origin original 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 $0.00067 $0.02918
Opus 5 $0.00034 $0.01459
Sonnet 5 $0.00013 $0.00584
Haiku 4.5 $0.00007 $0.00292

Measured 2d ago against content hash c1b5f3d3de6e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade D, and why

opencode-permissions scanned grade D 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.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

"sudo *": "deny",

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

- `rm -rf /` → last matching rule is `"rm *": "deny"` → denied
skills/opencode-permissions/SKILL.md · 462 lines

How it starts

The opening of the file, as written. The whole thing — 462 lines — stays where its author put it; the contents beside it link to each section on GitHub.

OpenCode Permissions

📚 Official Docs: For the latest information, always refer to the official documentation: https://opencode.ai/docs/permissions/

Control which actions require approval to run in OpenCode.

OpenCode uses the permission config to decide whether a given action should run automatically, prompt you, or be blocked. Permissions control what tools can do during a session.


Actions

Each permission rule resolves to one of three actions:

Action Behavior
"allow" Run without approval
"ask" Prompt for approval before running
"deny" Block the action entirely

Configuration

Set All Permissions at Once

You can set a global default for all permissions:

{
  "$schema": "https://opencode.ai/config.json",
  "permission": "allow"
}

Set Per-Tool Permissions

Override specific tools while keeping a global default:

{
  "$schema": "https://opencode.ai/config.json",
  "permission": {
    "*": "ask",
    "bash": "allow",
    "edit": "deny"
  }
}

Granular Rules (Object Syntax)

For most permissions, you can use an object to apply different actions based on the tool input. Rules are evaluated by pattern match, with the last matching rule winning.

Basic Pattern

{
  "$schema": "https://opencode.ai/config.json",
  "permission": {
    "bash": {
      "*": "ask",
      "git *": "allow",
      "npm *": "allow",
      "rm *": "deny",
      "grep *": "allow"
    },
    "edit": {
      "*": "deny",
      "packages/web/src/content/docs/*.mdx": "allow"
    }
  }
}

In this example:

  • git status → last matching rule is "git *": "allow" → allowed
  • rm -rf / → last matching rule is "rm *": "deny" → denied
  • npm install → last matching rule is "npm *": "allow" → allowed
  • Edit to .mdx files → allowed; edit to other files → denied

Wildcards

Permission patterns use simple wildcard matching:

Read the full file on GitHub · 462 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 · 462 lines · 67 tokens per session scan D c1b5f3d3de6e

Subscribe to this mod's changes

opencode-permissions is a skill published in the GitHub repository Timmy6942025/opencode-builder-skill (2 stars, last pushed 3mo ago), licensed MIT. It adds 67 tokens to every session and 2,918 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it D with 2 findings (asks for root, recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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