opencode-skill-creation-skill

opencode-skill-creation-skill is a skill for OpenCode from darellchua2/opencode-config-template. It costs 18 tokens per session (3,614 once invoked), scanned A, original, Apache-2.0.

A guided tool for creating OpenCode skills, including their metadata, documentation, validation, and file structure.

In plain words
What is it for?
Use it to start a skill from collected requirements, generate its SKILL.md file, and check its naming and documentation.
Why use it?
It removes repetitive setup and helps keep new skills consistent with OpenCode’s documented requirements.

Skill for OpenCode

Written for OpenCode: installed under .opencode/. Also seen: mentions subagents; mentions OpenCode.

Good fit Use it to start a skill from collected requirements, generate its SKILL.md file, and check its naming and documentation.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/darellchua2/opencode-config-template/opencode-skill-creation-skill
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.

Any agent
npx skills add darellchua2/opencode-config-template --skill opencode-skill-creation-skill
Clone the repo
git clone --depth 1 https://github.com/darellchua2/opencode-config-template

Made for: OpenCode.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for opencode-skill-creation-skill

README.md
[![agentmods](https://agentmods.dev/badge/skills/darellchua2/opencode-config-template/opencode-skill-creation-skill.svg)](https://agentmods.dev/skills/darellchua2/opencode-config-template/opencode-skill-creation-skill)
Your own site
<a href="https://agentmods.dev/skills/darellchua2/opencode-config-template/opencode-skill-creation-skill"><img src="https://agentmods.dev/badge/skills/darellchua2/opencode-config-template/opencode-skill-creation-skill.svg" alt="Measured on agentmods" height="20"></a>
Per session 18 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,614 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 5 findings, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Rogue Agent · line 17
    Skill modifies its own code, configuration, or behavior at runtime. Self-modification enables an agent to escalate privileges, disable safety constraints, or install persistent backdoors.
    Fix: Prevent the skill from modifying its own code, SKILL.md, or configuration files. Treat skill files as read-only at runtime.
  • high Rogue Agent · line 181
    Skill modifies its own code, configuration, or behavior at runtime. Self-modification enables an agent to escalate privileges, disable safety constraints, or install persistent backdoors.
    Fix: Prevent the skill from modifying its own code, SKILL.md, or configuration files. Treat skill files as read-only at runtime.
  • high Anti-Refusal · line 373
    Skill instructs the agent to omit warnings, disclaimers, or ethical commentary. Stripping safety caveats hides risk from the user and is a common jailbreak preamble.
    Fix: Remove instructions that suppress warnings, disclaimers, or ethical commentary. Let the agent surface safety-relevant caveats to the user.
  • medium Agent Snooping · line 178
    Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.
    Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
  • medium Agent Snooping · line 468
    Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.
    Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
How audits are shown
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 5.1 $0.00018 $0.03614
Opus 5 $0.00009 $0.01807
Sonnet 5 $0.00004 $0.00723
Haiku 4.5 $0.00002 $0.00361

Measured 4d ago against content hash 18f1a5543313, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

opencode-skill-creation-skill 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 4d 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.

opencode_app/.opencode/skills/opencode-skill-creation-skill/SKILL.md · 495 lines

How it starts

The opening of the file, as written. The whole thing — 495 lines — stays where its author put it; the contents beside it link to each section on GitHub.

What I do

I guide you through creating a new OpenCode skill from scratch by:

  1. Collect Requirements: Prompt for skill name, description, purpose, and category
  2. Generate Frontmatter: Create proper YAML frontmatter with all required fields
  3. Structure Content: Build complete skill documentation following official standards
  4. Validate: Ensure skill meets naming rules and documentation guidelines
  5. Create Files: Write SKILL.md to appropriate directory structure

When to use me

Use this when:

  • You want to create a new OpenCode skill without manually formatting SKILL.md
  • You need to ensure your skill follows official documentation standards
  • You want to avoid repetitive setup when creating multiple skills

Ask clarifying questions about:

  • Skill's primary purpose and capabilities
  • Category for the installer registry (testing, linting, deployment, etc.)
  • Prerequisites and dependencies
  • Expected inputs and outputs

Prerequisites

  • Write access to the skills/ directory
  • Understanding of OpenCode skill structure
  • Knowledge of the skill's purpose and requirements
  • Python 3+ for YAML validation (optional but recommended)

Steps

Step 1: Gather Skill Requirements

Prompt the user for the following information:

Required Fields:

  • Name: Unique skill identifier (1-64 chars, lowercase alphanumeric with single hyphens)
  • Description: Brief description (1-1024 chars) specific enough for agents to choose correctly
  • License: Usually "Apache-2.0" but can be specified

Optional Fields:

  • Compatibility: Usually "opencode" but can specify framework compatibility
  • Category: Installer-registry grouping (required by build-registry.mjs, init.mjs, setup.sh counts — invisible to OpenCode runtime but never omit)
  • Metadata: Opaque string map; only protocol/pattern are house-kept (bats/registry test signals). Do not add audience/workflow/languages/trigger keys

Prompt Template:

Please provide the following information for your new skill:

1. **Skill Name**: (lowercase, alphanumeric, single hyphens, 1-64 chars)
2. **Description**: (1-1024 characters, specific for skill selection)
3. **License**: (default: Apache-2.0)
4. **Compatibility**: (default: opencode)
5. **Target Audience**: (e.g., developers, DevOps, QA)
6. **Workflow Type**: (e.g., testing, linting, deployment)

Example:
  - Name: python-pytest-creator
  - Description: Generate comprehensive pytest test files for Python using test-generator-framework
  - Audience: developers
  - Workflow: testing

Read the full file on GitHub · 495 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. 4d ago First seen · 495 lines · 18 tokens per session scan A 18f1a5543313

Subscribe to this mod's changes

opencode-skill-creation-skill is a skill published in the GitHub repository darellchua2/opencode-config-template (6 stars, last pushed yesterday), licensed Apache-2.0. It adds 18 tokens to every session and 3,614 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

Related

Other skills, from other repositories

systematic-debugging

Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.

obra/superpowers · 21 tokens

local-ai-agents

Build local-first AI agents that run entirely on a developer workstation with Microsoft Foundry Local and Qwen function-calling models. Covers Small Language Models (SLMs), the OpenAI-compatible local endpoint, sandboxed local tools, local RAG with Chroma, local MCP servers, hybrid cloud/local routing, and the…

microsoft/ai-agents-for-beginners · 200 tokens

next-cache-components-adoption

Turn on Cache Components in a Next.js app and resolve the blocking routes it surfaces. Use when the user wants to enable, adopt, or migrate to Cache Components, flip the cacheComponents flag, work through a flood of blocking-prerender / instant validation errors, run the cache-components-instant-false codemod, or…

vercel/next.js · 95 tokens

next-partial-prefetching-adoption

Turn on Partial Prefetching in a Next.js app and work through the insights it surfaces. Use when the user wants to enable or adopt Partial Prefetching, flip the partialPrefetching flag, opt routes in with export const prefetch = 'partial', audit Link prefetch={true} behavior, preserve existing prefetched UI with…

vercel/next.js · 103 tokens

chronicle

Analyze Copilot session history for standup reports, usage tips, session search, and session reindexing. Use when the user asks for a standup, daily summary, usage tips, workflow recommendations, wants to search or find past sessions by keyword/file/PR, wants to reindex their session store, or asks about deleting…

microsoft/vscode · 72 tokens

babysit-pr

Babysit a GitHub pull request after creation by continuously polling review comments, CI checks/workflow runs, and mergeability state until the PR is merged/closed or user help is required. Diagnose failures, retry likely flaky failures up to 3 times, auto-fix/push branch-related issues when appropriate, and keep…

openai/codex · 114 tokens