ha-skill-creator

ha-skill-creator is a skill for Claude Code from shiwenwen/hope-agent. It costs 106 tokens per session (4,631 once invoked), scanned A, original, MIT.

A guide for creating and improving Hope Agent skills. A skill is a reusable set of instructions and supporting files that gives an agent a focused workflow.

In plain words
What is it for?
Use it to create a skill, revise a SKILL.md file, audit an existing skill, or evaluate whether the skill works effectively.
Why use it?
It provides structure for keeping skill instructions clear, appropriately scoped, and easy to trigger. It also covers testing a skill and improving its trigger accuracy.

Skill for Claude Code

Written for Claude Code: $ARGUMENTS substitution. Also seen: mentions subagents.

Good fit Use it to create a skill, revise a SKILL.md file, audit an existing skill, or evaluate whether the skill works effectively.

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Install with agentmods
npx agentmods add skills/shiwenwen/hope-agent/ha-skill-creator
About the project

Hope Agent is a cross-device personal AI assistant that remembers context, uses tools, and continues working toward goals through dynamically organized workflows. Individuals use it from desktop, web, server, or messaging environments to manage projects, knowledge, designs, and long-running tasks. The catalogue add-ons extend its agent workflows and capabilities.

shiwenwen/hope-agent · 1,589 stars · on GitHub

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 shiwenwen/hope-agent --skill ha-skill-creator
Clone the repo
git clone --depth 1 https://github.com/shiwenwen/hope-agent

Made for: Claude Code.

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 ha-skill-creator

README.md
[![agentmods](https://agentmods.dev/badge/skills/shiwenwen/hope-agent/ha-skill-creator/github.svg)](https://agentmods.dev/skills/shiwenwen/hope-agent/ha-skill-creator)
Your own site
<a href="https://agentmods.dev/skills/shiwenwen/hope-agent/ha-skill-creator"><img src="https://agentmods.dev/badge/skills/shiwenwen/hope-agent/ha-skill-creator/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for ha-skill-creator

Your own site · 80×15
<a href="https://agentmods.dev/skills/shiwenwen/hope-agent/ha-skill-creator"><img src="https://agentmods.dev/badge/skills/shiwenwen/hope-agent/ha-skill-creator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 106 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,631 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: 3 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 247
    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 320
    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.
  • medium Rogue Agent · line 3
    Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.
    Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
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 $0.00106 $0.04631
Opus 5 $0.00053 $0.02315
Sonnet 5 $0.00021 $0.00926
Haiku 4.5 $0.00011 $0.00463

Measured 4d ago against content hash fd51e3de4fa8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

ha-skill-creator 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.

The scan reads SKILL.md. This mod also ships 13 executable files (eval-viewer/generate_review.py, scripts/__init__.py, scripts/aggregate_benchmark.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/ha-skill-creator/SKILL.md · 479 lines

How it starts

The opening of the file, as written. The whole thing — 479 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill Creator

Tool for creating new skills and iteratively improving existing ones.

For an existing third-party skill that the user wants installed without edits, use ha-skill-installer. Use ha-find-skills when the user still needs a suitable candidate. Keep creation/editing separate from acquiring and installing a package.

Skill System Overview

Hope Agent skills are modular, self-contained packages that extend the AI assistant's capabilities with domain knowledge, workflows, and tools. Skills turn a general-purpose AI into a domain-specific expert.

Skill Loading (Three-Tier Progressive Disclosure)

  1. Catalog metadata (name + description, plus optional Claude-style when_to_use) — injected only when the skill is eligible and visible (~100 words)
  2. SKILL.md body — loaded when the skill triggers (ideal <500 lines)
  3. Bundled resources — loaded on demand (scripts can be executed directly, no need to read into context)

Body Organization — Three Common Patterns

Pick the pattern that matches the skill's shape. Most skills fit cleanly into one; some mix patterns (e.g. start task-based, add a workflow for the one complex operation). All three keep the body short by pushing depth into references/.

1. Workflow-based — sequential process with ordered steps. Best for builds, deployments, delivery pipelines, investigations.

SKILL.md
├── ## Overview
├── ## Step 1 — <setup>
├── ## Step 2 — <main action>
├── ## Step 3 — <verify / publish>
└── ## Troubleshooting   (refers to references/*.md per step)

2. Task-based — capability menu, operations are independent. Best for analysis tools and skills offering several unrelated features.

SKILL.md
├── ## Overview
├── ## Quick Start
├── ## Task: <feature A>
├── ## Task: <feature B>
└── ## Task: <feature C>

3. Reference-based — specification / rules / standards. Best for style guides, API schemas, brand rules.

SKILL.md
├── ## Overview
├── ## Core Rules
└── (detailed spec in references/<area>.md, loaded on demand)

Read the full file on GitHub · 479 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 Changed · +4 lines fd51e3de4fa8
  2. 11d ago First seen · 475 lines · 106 tokens per session scan A 6aaa6a38b857

Subscribe to this mod's changes

ha-skill-creator is a skill published in the GitHub repository shiwenwen/hope-agent (1,589 stars, last pushed 2d ago), licensed MIT. It adds 106 tokens to every session and 4,631 once invoked, about $0.0005 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 2026-08-30.

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