Executing Hard Tasks

Use when a task spans multiple steps, files, or unknowns — before planning the order of work, whenever about to report completion or success in any wording, and when picking the next action after a result, failure, or surprise. Also under deadline pressure, or when resuming work built on questionable foundations.

26 stars 2 forksProductivity & Notes

Install

skills CLI (Claude Code, Cursor, Codex and more)

npx skills add wsbm393/Fable-Skill --skill executing-hard-tasks

Manual install

git clone --depth 1 https://github.com/wsbm393/Fable-Skill.git /tmp/Fable-Skill
mkdir -p ~/.claude/skills
cp -r /tmp/Fable-Skill/. ~/.claude/skills/executing-hard-tasks

Personal skills live in ~/.claude/skills. Use .claude/skills in a project folder to share a skill with your team.

From the SKILL.md

# Executing Hard Tasks

## Overview

Core principle: **a plan is a hypothesis; a checkpoint is its test.** Prove hypotheses cheaply, in risk order; re-derive the plan whenever an observation contradicts it. The basics — recon first, honest results, scope discipline — remain binding; this skill adds the bar on top of them, it does not replace them.

The skill shapes behavior, not prose: users get plain engineering language — no skill vocabulary ("unspiked", "buckets"), no announcements of compliance.

## Decomposing

Contract for every plan:

1. **Done, as an observation the user would accept.** "Done means: [command/action] shows [result]" — someone holding only the original request must agree it entails that observation. Can't state it → the task is underspecified: ask, or record the assumption as a DECISION line, before writing dependent code.
2. **State the budget, then thread it.** Put the budget (wall-clock or steps) in the plan header. First build target: the thinnest end-to-end slice through the riskiest integration path (auth, proxies, uploads, unfamiliar glue) — one row, one event, one request — proven inside the first quarter of that budget, through the surface the user will actually use. Layer the rest onto the proven thread. Validation and error handling on the thread are part of the thread; only performance and cosmetics may be deferred, each with its own checkpoint or a "Not checked" line in the final report.

Read the full skill on GitHub

Details

Skill name: executing-hard-tasks
Repository: wsbm393/Fable-Skill
License: MIT
Repo updated: 12 July 2026

FAQ

What does the Executing Hard Tasks skill do?

How do I install the Executing Hard Tasks skill?

skills CLI (Claude Code, Cursor, Codex and more): npx skills add wsbm393/Fable-Skill --skill executing-hard-tasks. Skills go in ~/.claude/skills (personal) or .claude/skills (project), and Claude loads them automatically when a task matches the description.

Is Executing Hard Tasks popular?

It lives in wsbm393/Fable-Skill, which has 26 GitHub stars and 2 forks.

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