loop-engineering

A work-session guide for choosing, advancing, recording, and finishing units of engineering work.

In plain words
What is it for?
Use it to select the next task, size the work, keep a long task moving, capture lessons, decide what belongs in project guidance, and deliver completed changes.
Why use it?
It gives structure to projects that involve several steps, interruptions, changing priorities, or decisions about when work is truly complete.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/telagod/code-abyss/loop-engineering
Any agent
npx skills add telagod/code-abyss --skill loop-engineering
Clone the repo
git clone --depth 1 https://github.com/telagod/code-abyss

Made for: Claude Code, Codex.

Per session 97 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 519 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00097 $0.00519
Opus 5 $0.00048 $0.00260
Sonnet 5 $0.00019 $0.00104
Haiku 4.5 $0.00010 $0.00052

Measured 2d ago against content hash 31a7eb677d42, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

loop-engineering 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 2d ago.

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/_kernel/loop-engineering/SKILL.md · 39 lines

What it actually says

Loop — the engineering cycle: select, advance, distill, deliver

Rule content lives in the four files below; this SKILL.md only routes (doctrine/04-maintenance.md governs edits to this bundle too).

Route by moment

You are about to… Read (in this folder)
Start a session; choose the next unit; size it; decide who/which tier runs it select.md
Push a unit forward; wonder if you're stalled; pace an unattended run advance.md
Decide where a learning goes — lesson, memory, project-level skill, or nowhere distill.md
Claim a unit done; commit; report; end the session deliver.md

A full pass is select.mdadvance.mddistill.mddeliver.md, once per unit of work; re-enter at select.md §5 after each landing.

Scope and neighbors

This bundle is the outer cycle that sequences the others across a session and a project. Whether/how to delegate and judge (escalate, done-gate, ask-user) is doctrine; how to work a problem once inside a unit (investigate, design, execute, verify, write) is methods; domain judgment is the matching domain bundle. When this bundle and doctrine both fire, doctrine first — its three non-negotiables apply inside every phase of the loop.

The stance

A project advances as a sequence of landed loops, and compounds only if each loop distills. Progress is landed deliverables, not activity (advance.md §3); the next session's speed is this session's runway (deliver.md §4); and the institution grows one filed learning at a time (distill.md §1) — that is how weak sessions get strong.

Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 2d ago First seen · 39 lines · 97 tokens per session scan A 31a7eb677d42

Subscribe to this mod's changes

loop-engineering is a skill published in the GitHub repository telagod/code-abyss (240 stars, last pushed 1mo ago), licensed MIT. It adds 97 tokens to every session and 519 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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