Code Harness

SkillDev tools

Guides your agent to write, refactor, review, and debug code more reliably before it starts coding.

Available today. Use it from your connected AI after setup.

Connect ahel once, and every AI you use reads what you have installed.

Then ask your AI: use the Code Harness skill

About this capability

Use BEFORE generating, refactoring, reviewing, or debugging code. Trigger phrases include "write a function/script/class for X", "review this code/diff/PR", "refactor this", "debug this error", "is this implementation correct", "what's wrong with this code", "improve this code", "translate from X to

What this skill tells your AI

The instructions your AI receives, as published by jeremylongshore/tons-of-skills-marketplace in plugins/community/ejentum-code/SKILL.md and read by ahel’s review.

When this skill triggers, call the code tool from the ejentum MCP server. Pass a 1-2 sentence framing of WHAT you are coding or reviewing as the query argument. Include the failure risk to avoid where possible.

Good query: review a Python refactor that converts raise UserNotFound to silent default return; tests still pass Bad query: look at this code

The tool returns a structured scaffold containing:

  • [CODE FAILURE]: engineering failure pattern to avoid
  • [ENGINEERING PROCEDURE]: steps to follow
  • [REASONING TOPOLOGY]: decision flow
  • [CORRECT PATTERN]: shape correct code should take
  • [VERIFICATION]: self-check
  • Amplify: and Suppress: signals

Absorb internally. Do NOT echo bracket labels in the user-facing reply. Apply the scaffold's failure-pattern check against your draft before responding; if your code exhibits the named failure, rewrite.

If the API is unreachable, proceed with native engineering. The scaffold enhances; it is not a hard dependency.

Latency cost: ~1 second. Benefit: catches the kinds of behavioral changes and silent contract violations that look plausible but break under real conditions.

Signals

GitHub stars
3k
Forks
396
Last commit
Sep 2026
Advanced
Catalog kind
skill
Gateway key
code-jeremylongshore
Source
github.com/jeremylongshore/tons-of-skills-marketplace