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Goodskill

Skill haabe/mycelium/tests/bash/fixtures/check_31/present/plugins/mycelium/skills/goodskill

AI made building cheap. It didn't make deciding cheap. Mycelium is a Claude Code harness that makes your agent run discovery and weigh evidence before it writes code. It earns the right to start. Built for software, courses, AI tools, and services.

Install
npx -y skills add haabe/mycelium --skill goodskill

Assembled from the repository path, not quoted from the project. Check it against their README if it does not work.

What its author says it does

Copied from the file, not written here

Test fixture skill that writes to canvas AND carries the Preflight block. Check 31 must pass.

SKILL.md

0.5 KB, 96 tokens by cl100k_base, as published. Nobody here has run it

Good Skill

This skill writes to .claude/canvas/purpose.yml (Update canvas/purpose.yml).

Preflight: Read target canvas file

Before any canvas write, this skill reads the target file first per the Read-before-Write hard rule (anti-pattern #7 instance #5 prevention).

Read .claude/canvas/purpose.yml (limit: 1 for Edit, full Read for Write)

Then proceeds with the write.

What ships with it

Read from the repository

Just SKILL.md. No reference files, no scripts.

Keep looking

Skills are one crate of 327,069. Ordering is by how many stacks a row turns up in, so the top of any crate is what has actually been picked rather than what has the most stars.