Is the Executing Hard Tasks skill free?

Yes. The skill itself is free from wsbm393/Fable-Skill. SkillProof publishes the install command and an independent test verdict at no cost.

What is the Executing Hard Tasks SkillProof Score?

8.8/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 8/10, docs & honesty 4/5.

How do I install Executing Hard Tasks?

Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.

Can I use Executing Hard Tasks with Cursor, Copilot, Gemini CLI, Codex or other AI tools?

The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.

Executing Hard Tasks

Forces checkpointed plans and Verified/Believed/Not-checked status buckets before you can say "done".

by wsbm393 · wsbm393/Fable-Skill

Tested · Works

Install — copy the command Download source ↗

Test report

Verdict: Tested · Works
Score: 8.8/10
Tested: Jul 16, 2026
Environment: Claude Code 2.x (agent harness)
Upstream re-checked: Aug 10, 2026 · e7b72cd

Ran a real mini-task twice (word-frequency function): the baseline pass claimed "done" with no test executed; the skill-guided pass refused that, ran the function, pasted actual output, and hunted an edge case (punctuation-in-word) before allowing a Verified line.

Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works

Installs cleanly 5/5
Triggers reliably 5/5
Output vs. baseline 8/10
Docs & honesty 4/5

What Executing Hard Tasks does

A process skill that changes how multi-step tasks are decomposed, executed, and reported: every subtask needs a pasteable checkpoint fixed at plan time, and completion claims are split into Verified (observation pasted), Believed (hedged), and Not checked. Triggers before planning multi-step work, whenever about to declare something done, and when picking the next action after a failure or surprise.

How to install Executing Hard Tasks

git clone https://github.com/wsbm393/Fable-Skill.git
mkdir -p ~/.claude/skills
cp -r Fable-Skill/. ~/.claude/skills/executing-hard-tasks

Skills live in ~/.claude/skills/ (global) or .claude/skills/ (per-project). Restart Claude Code after installing.

Commands — how to trigger Executing Hard Tasks

/executing-hard-tasks Forces checkpointed plans and Verified/Believed/Not-checked status buckets before you can say "done".

It also activates on plain-language prompts like these:

Plan out this feature that touches the API, migration, and frontend
I finished the login flow, it should all work correctly now, right?
The test just failed unexpectedly after my change, what should I do next?

Frequently asked questions

Is the Executing Hard Tasks skill free?: Yes. The skill itself is free from wsbm393/Fable-Skill. SkillProof publishes the install command and an independent test verdict at no cost.
Does Executing Hard Tasks work with Claude Code?: We tested it with Claude Code 2.x (agent harness) on Jul 16, 2026. Verdict: Tested · Works. Ran a real mini-task twice (word-frequency function): the baseline pass claimed "done" with no test executed; the skill-guided pass refused that, ran the function, pasted actual output, and hunted an edge case (punctuation-in-word) before allowing a Verified line.
What is the Executing Hard Tasks SkillProof Score?: 8.8/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 8/10, docs & honesty 4/5.
How do I install Executing Hard Tasks?: Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
Can I use Executing Hard Tasks with Cursor, Copilot, Gemini CLI, Codex or other AI tools?: The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.