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Agent skill

Pre Generation Check

by bitwize-music-studio in bitwize-music-studio/claude-ai-music-skills

Validates all pre-generation gates before sending tracks to Suno.

CC0-1.0Auto-check passedEducation

Install Pre Generation Check

skills CLI
$ npx skills add bitwize-music-studio/claude-ai-music-skills --skill pre-generation-check -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install bitwize-music-studio/claude-ai-music-skills pre-generation-check --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/bitwize-music-studio/claude-ai-music-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/pre-generation-check .claude/skills/pre-generation-check && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
pre-generation-check
GitHub stars
544
Token cost
~2.1k tokens
SKILL.md length
830 words
Files
1
Skills in repo
51
Repo updated
First seen
Licence
CC0-1.0

At a glance

Validates all pre-generation gates before sending tracks to Suno.

  • Works in 3 steps: Call… → Format pass/fail report from MCP response → Output verdict: READY or NOT READY
  • Says pre-gen check
  • SKILL.md covers Your Task, Instrumental Track Detection, The Gates and Workflow, plus 2 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Pre Generation Check is an agent skill from bitwize-music-studio/claude-ai-music-skills. Validates all pre-generation gates before sending tracks to Suno. Checks sources verified, lyrics reviewed, pronunciation resolved, explicit flag set, style prompt complete, and artist names cleared. Use before generating tracks on Suno or when the user says "pre-gen check" or "ready to generate".

Its SKILL.md is about 2.1k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Education, covering Language learning. It works with Suno. The repository describes itself as: Human + AI music production workflow for Suno - skills, templates, and tools. The licence is CC0-1.0.

When your agent uses it

  • Says pre-gen check
  • Ready to generate

Example prompts

  • “pre-gen check”
  • “ready to generate”
  • “Use the pre-generation-check skill to validate all pre-generation gates before sending tracks to Suno”
  • “/pre-generation-check”

Requirements

  • Pre-approved tools (allowed-tools): Read, Glob, Grep, bitwize-music-mcp

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

  1. Call run_pre_generation_gates(album_slug, track_slug) — returns all gate results (8 blocking + 3 advisory)
  2. Format pass/fail report from MCP response
  3. Output verdict: READY or NOT READY

What it can do on your machine

Read from SKILL.md and the folder at commit 58f32c2. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Read
    • Glob
    • Grep
    • bitwize-music-mcp

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are markdown).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Pre Generation Check loads about 2.1k tokens when it runs. Until then it costs about 80 tokens; SKILL.md has 830 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~80
When it runs · the whole SKILL.md, loaded when a task matches
~2.1k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from bitwize-music-studio/claude-ai-music-skills at commit 58f32c2, republished under its CC0-1.0 licence (© bitwize-music-studio). 830 words, ~2,101 tokens.

Download SKILL.mdSave it as .claude/skills/pre-generation-check/SKILL.md (or your agent's skills folder).
name
pre-generation-check
description
Validates all pre-generation gates before sending tracks to Suno. Checks sources verified, lyrics reviewed, pronunciation resolved, explicit flag set, style prompt complete, and artist names cleared. Use before generating tracks on Suno or when the user says "pre-gen check" or "ready to generate".
allowed-tools
Read, Glob, Grep, bitwize-music-mcp
argument-hint
<album-name or track-path>
model
haiku
prerequisites
lyric-writer, lyric-reviewer, pronunciation-specialist

Your Task

Input: $ARGUMENTS

Run all pre-generation gates on the specified album or track. Block generation if any gate fails.

Pre-Generation Checkpoint

You are a pre-generation validator. Your job is to verify that ALL requirements are met before a track is sent to Suno for generation. You do NOT write or fix anything — you report pass/fail status for each gate.

Role: Final checkpoint before Suno generation

lyric-writer (+ suno-engineer) → pronunciation-specialist → lyric-reviewer → pre-generation-check → [Generate in Suno]
                                                                                      ↑
                                                                             You are the final gate

Instrumental Track Detection

Before running gates, check the track's frontmatter for instrumental: true and the Track Details table for **Instrumental** | Yes.

First, validate sync: If the frontmatter instrumental field and Track Details **Instrumental** row disagree (one says true/Yes, the other says false/No) or only one is set, FAIL with a blocking error:

[FAIL] Instrumental field mismatch — frontmatter: {value}, Track Details: {value}
       Fix both to match before proceeding. Gate routing depends on this field.

Do NOT proceed with gate evaluation until the mismatch is resolved — the wrong gates would be skipped.

If instrumental (both fields agree): Skip Gates 2 (Lyrics Reviewed), 3 (Pronunciation Resolved), and 4 (Explicit Flag). Mark them as SKIP — Instrumental track. Only run Gates 1, 5, and 6.

Gate 5 adjustment for instrumental: Do NOT check for vocal description in Style Box. Instead verify the Style Box has genre/instrumentation/mood. Do NOT require [Verse]/[Chorus] tags — accept structural tags like [Intro], [Main Theme], [Bridge], [Outro].

The Gates

The MCP tool behind this skill reports 8 blocking gates plus 3 advisories (Style Box Descriptor Count, Performance Cues, Generation Settings).

Gate 1: Sources Verified
  • Check: Track's Sources Verified field is Verified or N/A
  • Fail if: Pending or ❌ Pending
  • Fix: Run /bitwize-music:verify-sources [album] to walk through human source verification for pending tracks.
  • Severity: BLOCKING — Never generate with unverified sources
  • Skip if: Track is not source-based (N/A is acceptable)
Gate 2: Lyrics Reviewed
  • Check: Lyrics Box is populated with actual lyrics (not template placeholders)
  • Check: No [TODO], [PLACEHOLDER], or template markers in lyrics
  • Fail if: Empty lyrics box or contains template text
  • Fix: Run /bitwize-music:lyric-writer [track] to write or complete the lyrics.
  • Severity: BLOCKING
Gate 3: Pronunciation Resolved
  • Check: All entries in Pronunciation Notes table have phonetic spellings applied in the Lyrics Box
  • Check: No unresolved homographs (live, read, lead, wind, tear, bass, etc.)
  • Fail if: Pronunciation table entry not applied in lyrics, or homograph without phonetic fix
  • Fix: Run /bitwize-music:pronunciation-specialist [track] to scan and resolve pronunciation risks.
  • Severity: BLOCKING — Suno cannot infer pronunciation from context
Gate 4: Explicit Flag Set
  • Check: Track has Explicit field set to Yes or No (not empty/template)
  • Fail if: Explicit field is missing, empty, or template placeholder
  • Severity: BLOCKING — the MCP gate fails closed when the flag is unset (#370)
Show full SKILL.md (413 more words)Show less
Gate 5: Style Box Complete
  • Check: Suno Inputs section has a non-empty Style Box (the ### Style Box heading in the track template)
  • Check: Style Box includes vocal description
  • Check: Section tags present in Lyrics Box ([Verse], [Chorus], etc.)
  • Fail if: Empty Style Box or missing section tags
  • Advisory (WARN, non-blocking): Style Box descriptor count — flags genuine bloat (>12 descriptors; trim duplicative synonym-piles). A focused ~10-descriptor box is fine — 4-7 is a starting heuristic, not a Suno rule.
  • Advisory (WARN, non-blocking): Performance Cues — flags ≥2 structure tags with no per-section cues ([Verse 1 - cold regal]); bare tags are a common cause of flat, generic output
  • Advisory (WARN, non-blocking): Generation Settings — the track's ### Generation Settings table must record a catalog model (v6, v6-wild, v6-mini, Custom: <name>) and Variety Off; at any higher Variety Suno rewrites the Style Box, so the descriptor checks above are meaningless. A PASS detail also notes when Max Mode is Off on a track targeting 2:30 or longer (Suno recommends it over two minutes; 2× credits). SKIP when the section is missing — add it from templates/track.md.
  • Fix: Style Box is created by suno-engineer, which is normally auto-invoked by lyric-writer. Run /bitwize-music:suno-engineer [track] to create the missing Style Box.
  • Severity: BLOCKING
Gate 6: Artist Names Cleared
  • Check: Style prompt does not contain real artist/band names
  • Reference: ${CLAUDE_PLUGIN_ROOT}/reference/suno/artist-blocklist.md
  • Fail if: Any blocked artist name found in style prompt
  • Fix: Run /bitwize-music:suno-engineer [track] to regenerate the Style Box without artist names, or manually edit the Style Box to replace artist names with genre/style descriptors.
  • Severity: BLOCKING — Suno filters/blocks artist names

Workflow

Single Track
  1. Call run_pre_generation_gates(album_slug, track_slug) — returns all gate results (8 blocking + 3 advisory)
  2. Format pass/fail report from MCP response
  3. Output verdict: READY or NOT READY
Full Album
  1. Call run_pre_generation_gates(album_slug) — returns all gate results (8 blocking + 3 advisory)
  2. Format per-track and album-level summary from MCP response
  3. Output verdict: ALL READY, PARTIAL (list ready tracks), or NOT READY

Report Format

markdown
# Pre-Generation Check

**Album**: [name]
**Date**: YYYY-MM-DD

## Track: [XX] - [Title]

| Gate | Status | Details |
|------|--------|---------|
| Sources Verified | PASS | Verified 2025-01-15 |
| Lyrics Reviewed | PASS | 247 words, all sections tagged |
| Pronunciation Resolved | PASS | 3/3 entries applied |
| Explicit Flag | PASS | Yes |
| Style Prompt | PASS | "Male baritone, gritty..." |
| Artist Names | PASS | No blocked names found |
| Generation Settings | PASS | Model v6, Variety Off, Max Mode On |

**Verdict**: READY FOR GENERATION

---

## Track: [XX] - [Title]

| Gate | Status | Details |
|------|--------|---------|
| Sources Verified | FAIL | ❌ Pending |
| Lyrics Reviewed | PASS | 312 words |
| Pronunciation Resolved | FAIL | "live" unresolved in V2:L3 |
| Explicit Flag | FAIL | Not set |
| Style Prompt | PASS | Complete |
| Artist Names | FAIL | "Nirvana" found in style prompt |
| Generation Settings | WARN | Variety is 'Normal' — set Off |

**Verdict**: NOT READY — 4 issues (3 blocking, 1 warning)
**Warnings**: 2

---

## Album Summary

| Status | Count |
|--------|-------|
| Ready | 6 |
| Not Ready | 2 |
| **Total** | **8** |

**Blocking issues**: 3
**Warnings**: 1

**Album verdict**: NOT READY — fix 2 tracks before proceeding

Remember

  1. You are a gate, not a fixer — Report issues, don't fix them
  2. BLOCKING means BLOCKING — Never say "can proceed with caution" for blocking gates
  3. Check every pronunciation table entry — Missing one phonetic fix will ruin a Suno take
  4. Artist names are sneaky — Check style prompt carefully against the blocklist
  5. Be specific — "Gate failed" is useless. "live in V2:L3 unresolved" is actionable
  6. Instrumental tracks skip lyrics gates — Gates 2, 3, 4 are N/A for instrumental tracks

Your deliverable: Pass/fail report with album-level verdict.

© bitwize-music-studio, CC0-1.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in skills/pre-generation-check of bitwize-music-studio/claude-ai-music-skills.

Open the folder on GitHubat commit 58f32c2

Compare with similar skills

Pre Generation Check next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

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Works with

Categories

Questions about Pre Generation Check

What does Pre Generation Check do?

Validates all pre-generation gates before sending tracks to Suno. Pre Generation Check is an agent skill from bitwize-music-studio/claude-ai-music-skills. Validates all pre-generation gates before sending tracks to Suno.

When should I use Pre Generation Check?

Pre Generation Check fits situations like: says pre-gen check; ready to generate.

How do I install Pre Generation Check in Claude Code?

Run `npx skills add bitwize-music-studio/claude-ai-music-skills --skill pre-generation-check -a claude-code`. Or copy the skill folder (skills/pre-generation-check in bitwize-music-studio/claude-ai-music-skills) into .claude/skills/pre-generation-check in your project. Claude Code loads it when a task matches its description.

How do I install Pre Generation Check in Codex?

Run `npx skills add bitwize-music-studio/claude-ai-music-skills --skill pre-generation-check -a codex`. Or copy the skill folder (skills/pre-generation-check in bitwize-music-studio/claude-ai-music-skills) into .agents/skills/pre-generation-check in your project. Codex loads it when a task matches its description.

Can I use Pre Generation Check in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add bitwize-music-studio/claude-ai-music-skills --skill pre-generation-check -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/pre-generation-check, .gemini/skills/pre-generation-check, .github/skills/pre-generation-check and .opencode/skills/pre-generation-check in your project.

What does Pre Generation Check need to run?

SKILL.md names no scripts, command-line tools or credentials: Pre Generation Check is instructions for the agent only. Its frontmatter pre-approves these tools: Read, Glob, Grep, bitwize-music-mcp.

Does Pre Generation Check access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Pre Generation Check safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Pre Generation Check use?

Pre Generation Check is published under the CC0-1.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Pre Generation Check use?

About 2.1k tokens (SKILL.md is roughly 8.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Pre Generation Check?

Skills that share tags, products or a category with Pre Generation Check: Fluent Progress (m98/fluent, 421 stars), Fluent Sm2 Calculator (m98/fluent, 421 stars), Duolingo Play (pockebot/openpocket, 847 stars) and Study Companion En (mingchen666/Reviva, 244 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Pre Generation Check?

bitwize-music-studio (a GitHub organization) maintains it in bitwize-music-studio/claude-ai-music-skills, which has 544 GitHub stars. The repository holds 51 skills in this directory. The repository was last updated on October 7, 2026.

Source: bitwize-music-studio/claude-ai-music-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.