Hermes Agent is an AI assistant that learns from its use by creating and improving skills, retaining knowledge, searching past conversations, and adapting to its users. It is for people who want to run an agent through a terminal or messaging platforms while connecting it to different AI models and scheduled tasks.
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 NousResearch/hermes-agent --skill simplify-codegit clone --depth 1 https://github.com/NousResearch/hermes-agentWrote 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/nousresearch/hermes-agent/simplify-code)<a href="https://agentmods.dev/skills/nousresearch/hermes-agent/simplify-code"><img src="https://agentmods.dev/badge/skills/nousresearch/hermes-agent/simplify-code.svg" alt="Measured on agentmods" height="20"></a>- Snyk pass
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 | $0.00014 | $0.03379 |
| Opus 5 | $0.00007 | $0.01690 |
| Sonnet 5 | $0.00003 | $0.00676 |
| Haiku 4.5 | $0.00001 | $0.00338 |
Grade A, and why
simplify-code 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 3d 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.
Copies of this mod
2 near-identical copies found in the catalogue:
- simplify-code — 98% identical, 2 lines differ
- simplify-code — 98% identical, 2 lines differ
How it starts
The opening of the file, as written. The whole thing — 271 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Simplify Code — Parallel Review & Cleanup
Review your recent code changes with four focused reviewers running in parallel, aggregate their findings, and apply the fixes worth applying.
This is a cleanup pass, not a bug hunt. You are improving the quality of
code that already works — removing duplication, flattening needless
complexity, cutting waste, and deepening band-aid fixes. Do not go hunting
for correctness bugs here; that's what requesting-code-review is for.
Core principle: Four narrow reviewers beat one broad reviewer. Each one deeply searches the codebase for a single class of problem — reuse, quality, efficiency, altitude — without diluting its attention across all four. They run concurrently, so you pay the latency of one review, not four.
When to Use
Trigger this skill when the user says any of:
- "simplify" / "simplify my changes" / "simplify these changes"
- "review my code" / "review my recent changes" / "clean up my changes"
- "/simplify" (if they're carrying the Claude Code habit over)
Optional modifiers the user may add — honor them:
- Focus: "simplify focus on efficiency" → run only the efficiency reviewer
(or weight the aggregation toward it). Recognized focuses:
reuse,quality(also acceptssimplification),efficiency,altitude. - Dry run: "simplify but don't change anything" / "just report" → run the four reviewers, present findings, apply NOTHING. Ask before applying.
- Scope: "simplify the last commit" / "simplify staged" / "simplify src/foo.py" → narrow the diff source accordingly (see Phase 1).
Do NOT auto-run this after every edit or tack it onto the end of unrelated tasks. It costs four subagents' worth of tokens — invoke it only when the user explicitly asks.
The Process
Phase 1 — Identify the changes
Capture the diff to review. Pick the source by what the user asked for, in this default order:
# 1. Default: uncommitted working-tree changes (tracked files)
git diff
# 2. If that's empty, include staged changes
git diff HEAD
# 3. Scoped variants the user may request:
git diff --staged # "staged changes"
git diff HEAD~1 # "the last commit"
git diff main...HEAD # "this branch" / "my PR"
git diff -- src/foo.py # specific file(s)
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.
- 3d ago First seen · 271 lines · 14 tokens per session scan A 9ee977c3362a
simplify-code is a skill published in the GitHub repository NousResearch/hermes-agent (242,680 stars, last pushed today), licensed MIT. It adds 14 tokens to every session and 3,379 once invoked, about $0.0001 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 2026-09-03.
Other skills, from other repositories
keybindings-help
Use when the user wants to customize keyboard shortcuts, rebind keys, add chord bindings, or modify /.claude/keybindings.json. Examples: "rebind ctrl+s", "add a chord shortcut", "change the submit key", "customize keybindings".
security-review
Complete a security review of the pending changes on the current branch.
simplify
Review the changed code for reuse, simplification, efficiency, and altitude cleanups, then apply the fixes. Quality only — it does not hunt for bugs; use /code-review for that.
continual-learning
Nightly refinement of an existing per-repo review-style prompt using this reviewer's own finding outcomes. Read confirmed (resolved-by-commit / thumbs-up) and dismissed (thumbs-down) findings, promote the bug patterns the team actually fixes, demote the false-positive patterns, reconcile against the current prompt…
fewer-permission-prompts
Scan your transcripts for common read-only Bash and MCP tool calls, then add a prioritized allowlist to project .claude/settings.json to reduce permission prompts.
caveman-review
Compressed code review - one line per finding with location, problem and fix. Use for /caveman-review, "review this PR", or "review the diff".