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.
npx skills add jcwleo/oh-no-harness --skill simplifygit clone --depth 1 https://github.com/jcwleo/oh-no-harnessWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/jcwleo/oh-no-harness/simplify)<a href="https://agentmods.dev/skills/jcwleo/oh-no-harness/simplify"><img src="https://agentmods.dev/badge/skills/jcwleo/oh-no-harness/simplify.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00041 | $0.03290 |
| Opus 5 | $0.00020 | $0.01645 |
| Sonnet 5 | $0.00008 | $0.00658 |
| Haiku 4.5 | $0.00004 | $0.00329 |
Grade A, and why
simplify 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 8d 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.
How it starts
The opening of the file, as written. The whole thing — 327 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Simplify for Claude Code
This generated file is the Claude Code-facing runtime skill document. Claude Code slash commands should read this file directly; maintainers edit the source documents listed below instead.
Generated Runtime Composition
Source order:
../../docs/skill-core/simplify.md../../docs/platforms/claude-code-runtime.md../../docs/platforms/claude-code-simplify.md
The sections below are already composed for this platform. Do not ask the runtime model to load another platform's runtime document or invocation syntax.
Source: docs/skill-core/simplify.md
Simplify
Simplify reviews changed code for reuse, simplification, efficiency, and
altitude issues, then applies behavior-preserving fixes. Its main skill pass
is read-only discovery; accepted repository work-product cleanup is applied
through executor, with inline mutation only as a recorded LIGHT-tiny or
dispatch-unavailable fallback.
It is a skill, not an agent. In Oh No Harness, ralph uses it after the
behavior lock and BEFORE the single review round, so the sole review sees the
cleaned diff; the active platform runtime document supplies the matching
simplify skill. When called by ralph, Simplify may be loaded or invoked only for eligible THOROUGH cleanup after Ralph's quick diff scan finds actual candidates or candidate uncertainty remains.
A clean THOROUGH quick scan records Simplify as not required without invoking
it. Direct Simplify use remains independently selected by its own behavior lock and Cleanup Depth Decision.
This is quality cleanup, not bug hunting. Use code-reviewer or the host's
code-review workflow for correctness bugs.
Software Development Stage
Simplify is the post-implementation, pre-review cleanup stage.
Use it after behavior is locked and before the caller's single review round, so that review sees the cleaned diff. It should improve reuse, clarity, maintainability, and efficiency without changing behavior, adding scope, or replacing implementation review.
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.
- 8d ago First seen · 327 lines · 41 tokens per session scan A 3d2b2b132bb3
simplify is a skill published in the GitHub repository jcwleo/oh-no-harness (11 stars, last pushed 1mo ago), licensed MIT. It adds 41 tokens to every session and 3,290 once invoked, about $0.0002 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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