seven-char-regulated-verse

seven-char-regulated-verse is a skill for Claude Code, Codex from cxcscmu/SkillLearnBench. It costs 35 tokens per session (935 once invoked), scanned A, original, MIT.

A guide to writing seven-character regulated verse, a classical Chinese poem with eight lines of seven characters each. It covers the required line structure, tone pattern, and shared rhymes at specified line endings.

In plain words
What is it for?
It helps compose or review eight-line poems, count characters, apply level and oblique tone patterns, and check the required rhymes on lines 2, 4, 6, and 8.
Why use it?
It gives a clear way to check a demanding poetic form with fixed length, tones, and rhyme placement. This helps reveal structural mistakes before the poem is finished.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit It helps compose or review eight-line poems, count characters, apply level and oblique tone patterns, and check the required rhymes on lines 2, 4, 6, and 8.

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Install with agentmods
npx agentmods add skills/cxcscmu/skilllearnbench/seven-char-regulated-verse
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.

Any agent
npx skills add cxcscmu/SkillLearnBench --skill seven-char-regulated-verse
Clone the repo
git clone --depth 1 https://github.com/cxcscmu/SkillLearnBench

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for seven-char-regulated-verse

README.md
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Your own site · 80×15
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Per session 35 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 935 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 5.1 $0.00035 $0.00935
Opus 5 $0.00017 $0.00467
Sonnet 5 $0.00007 $0.00187
Haiku 4.5 $0.00003 $0.00093

Measured 9d ago against content hash 23647e678f68, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

seven-char-regulated-verse 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 9d 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/b1-one-shot-claude-haiku-4-5/chinese-poem-generator/seven-char-regulated-verse/SKILL.md · 94 lines

How it starts

The opening of the file, as written. The whole thing — 94 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Seven-Character Regulated Verse (七言律诗) Structure

Overview

The seven-character regulated verse is one of the most refined forms of classical Chinese poetry. It consists of exactly 8 lines, with each line containing 7 characters.

Basic Structure Requirements

Line Count

  • Exactly 8 lines total
  • Format: Title (on line 1), then lines 1-8 of the poem

Character Count

  • Each line must have exactly 7 characters
  • Characters are meaningful units in classical Chinese (not syllables)

Rhyme Scheme

  • Lines 2, 4, 6, 8 must rhyme together
  • Rhyming is based on modern Mandarin pronunciation (following modern pinyin)
  • The rhymed character is typically at the end of the line
  • All rhyming lines share the same final sound (same tone vowel + consonant)

Tonal Pattern (Ping Ze 平仄)

The classical regulated verse follows strict tonal patterns:

  • 平 (píng) = level/even tones (1st, 2nd tones in Mandarin)
  • 仄 (zè) = oblique/departing tones (3rd, 4th tones in Mandarin)

Standard Tonal Pattern for Seven-Character Lines

Most common pattern (one of two acceptable patterns):

Line 1: 仄 仄 平 平 仄 仄 平
Line 2: 平 平 仄 仄 平 平 仄  (rhyme)
Line 3: 平 平 仄 仄 平 平 仄
Line 4: 仄 仄 平 平 仄 仄 平  (rhyme)
Line 5: 仄 仄 平 平 仄 仄 平
Line 6: 平 平 仄 仄 平 平 仄  (rhyme)
Line 7: 平 平 仄 仄 平 平 仄
Line 8: 仄 仄 平 平 仄 仄 平  (rhyme)

Alternative pattern:

Line 1: 平 平 仄 仄 平 平 仄
Line 2: 仄 仄 平 平 仄 仄 平  (rhyme)

Couplet Structure

The 8 lines form 4 couplets:

  1. Opening couplet (lines 1-2): Introduces the theme
  2. Development couplet (lines 3-4): Develops the theme further
  3. Turning couplet (lines 5-6): Shifts perspective or deepens meaning
  4. Closing couplet (lines 7-8): Resolves or concludes

Content Requirements

  • Each couplet should be relatively self-contained in meaning
  • Lines within a couplet should relate to each other
  • The poem should have a coherent overall narrative or emotional arc
  • Classical imagery and allusions are preferred

Antithesis (Duiou 对偶)

Regulated verses typically feature antithetical couplets where:

  • Opposite or complementary concepts are placed in parallel
  • Parallel grammatical structures are used
  • Creates balance and emphasis

Read the full file on GitHub · 94 lines

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. 9d ago First seen · 94 lines · 35 tokens per session scan A 23647e678f68

Subscribe to this mod's changes

seven-char-regulated-verse is a skill published in the GitHub repository cxcscmu/SkillLearnBench (83 stars, last pushed 2mo ago), licensed MIT. It adds 35 tokens to every session and 935 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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