Agent skill
parallel-prompt-generator
Generate agent-ready prompts from existing task specification files. Use when regenerating prompts after editing tasks, updating prompt templates, or preparing tasks for cpo execution.
Install this agent skill to your Project
npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/testing/parallel-prompt-generator-jpoutrin-product-forge-e4d0cecf
SKILL.md
Prompt Generator
Generate agent-ready prompts from existing task specification files in tasks/.
CRITICAL: Prompt Template Requirements
Every generated prompt file MUST include ALL of these sections (see Step 4 for full template):
| Section | Purpose | Required |
|---|---|---|
=== CONTEXT === |
Shared project context | YES |
=== OBJECTIVE === |
Task goal | YES |
=== CONTRACTS === |
Contract file references | YES |
=== FILES TO CREATE === |
Scope CREATE | YES |
=== FILES TO MODIFY === |
Scope MODIFY | YES |
=== DO NOT MODIFY === |
Scope BOUNDARY | YES |
=== IMPLEMENTATION REQUIREMENTS === |
Requirements | YES |
=== ACCEPTANCE CRITERIA === |
Checklist | YES |
=== EXECUTION INSTRUCTIONS === |
How to implement | MANDATORY |
=== IMPORTANT RULES === |
Constraints | MANDATORY |
=== OUTPUT FORMAT (REQUIRED) === |
JSON output block | MANDATORY |
=== COMPLETION SIGNAL === |
touch .claude-task-complete | MANDATORY |
DO NOT generate prompts without the EXECUTION INSTRUCTIONS, IMPORTANT RULES, OUTPUT FORMAT, and COMPLETION SIGNAL sections.
When to Use
- After editing task files in
tasks/ - To regenerate prompts with updated template
- Before running
cpo runif prompts are missing - To test different prompt formats
Input Requirements
The parallel directory must have:
parallel/TS-XXXX-slug/
manifest.json # Required: wave structure, agents
context.md # Required: shared context
contracts/ # Required: types.py, api-schema.yaml
tasks/ # Required: task-*.md files
task-001-users.md
task-002-products.md
Output
Generates:
parallel/TS-XXXX-slug/
prompts/
agent-prompts.md # Wave summary and launch commands
task-001.txt # Individual agent prompt
task-002.txt
...
Workflow
flowchart TB
Start[("tasks/ folder")]
Read["1. Read manifest.json"]
Context["2. Load context.md"]
Parse["3. Parse each task file"]
Generate["4. Generate task-NNN.txt"]
Summary["5. Create agent-prompts.md"]
Done[("prompts/ ready")]
Start --> Read
Read --> Context
Context --> Parse
Parse --> Generate
Generate --> Summary
Summary --> Done
Step 1: Read manifest.json
Extract:
- Wave structure and task ordering
- Agent assignments per task
- Tech spec reference
- Technology stack
Step 2: Load context.md
The shared context is injected into every prompt for efficiency.
Step 3: Parse Task Files
For each tasks/task-NNN-*.md:
-
Extract YAML frontmatter:
yamlid: task-001 component: users wave: 1 deps: [] agent: python-experts:django-expert contracts: [contracts/types.py, contracts/api-schema.yaml] -
Extract Markdown sections:
## Scope-> CREATE, MODIFY, BOUNDARY## Requirements-> Implementation requirements## Checklist-> Acceptance criteria
Note: The Output Format section is not in task files. It's a static template that the prompt generator always includes in generated prompts.
Step 4: Generate Individual Prompts
Create prompts/task-NNN.txt using this template:
TASK-{id}: {title}
Agent: {agent}
Wave: {wave}
Dependencies: {deps or "None"}
=== CONTEXT ===
{contents of context.md}
=== OBJECTIVE ===
{First line of task description or component name}
=== CONTRACTS ===
Reference these contract files before implementing:
{list of contract files with full paths}
=== FILES TO CREATE ===
{CREATE section from Scope}
=== FILES TO MODIFY ===
{MODIFY section from Scope}
=== DO NOT MODIFY ===
{BOUNDARY section from Scope}
=== IMPLEMENTATION REQUIREMENTS ===
{Requirements section content}
=== ACCEPTANCE CRITERIA ===
{Checklist section content}
=== EXECUTION INSTRUCTIONS ===
You MUST write code, not just describe it. Follow these steps:
1. **Read contracts first**: Read all files in contracts/ to understand interfaces
2. **Read existing code**: If modifying files, read them first
3. **Implement**: Use Write/Edit tools to create/modify code
4. **Test**: Run tests to verify implementation
5. **Lint**: Run linters (ruff, mypy, eslint as appropriate)
6. **Commit**: Create atomic commit with conventional format
=== IMPORTANT RULES ===
- Do NOT ask for confirmation - proceed immediately with implementation
- Do NOT modify files listed in DO NOT MODIFY section
- Do NOT skip writing tests
- Do NOT deviate from contract interfaces
- STOP if you encounter blocking issues and report in output
=== OUTPUT FORMAT (REQUIRED) ===
You MUST end your response with this JSON summary block:
```json
{
"task_completed": boolean,
"validation_passed": boolean,
"files_created": [string],
"files_modified": [string],
"tests_run": integer,
"tests_passed": integer,
"tests_failed": integer,
"summary": string,
"full_log": string,
"error_message": string | null
}
Set validation_passed: true ONLY if ALL acceptance criteria are met.
=== COMPLETION SIGNAL ===
Upon successful completion, run: touch .claude-task-complete
## Step 5: Create agent-prompts.md
Summary file with launch commands:
```markdown
# Agent Prompts for {name}
Generated: {timestamp}
Tech Spec: {tech_spec_id}
Total Tasks: {count}
## Wave Execution Order
### Wave 1 (Parallel)
| Task | Agent | Component |
|------|-------|-----------|
| task-001 | python-experts:django-expert | users |
| task-002 | python-experts:django-expert | products |
### Wave 2 (Parallel, depends on Wave 1)
| Task | Agent | Component |
|------|-------|-----------|
| task-003 | python-experts:django-expert | orders |
## Launch Commands
### Using cpo (Recommended)
```bash
cpo run parallel/{slug}/
Manual Execution (Wave 1)
# Run in parallel terminals or with &
claude --prompt-file prompts/task-001.txt --agent python-experts:django-expert &
claude --prompt-file prompts/task-002.txt --agent python-experts:django-expert &
wait
Manual Execution (Wave 2)
# After Wave 1 completes
claude --prompt-file prompts/task-003.txt --agent python-experts:django-expert
Prompt Files
| File | Task | Lines |
|---|---|---|
| prompts/task-001.txt | task-001-users | ~150 |
| prompts/task-002.txt | task-002-products | ~145 |
| prompts/task-003.txt | task-003-orders | ~160 |
## Validation Before Generation
Check these conditions:
- [ ] `manifest.json` exists and is valid JSON
- [ ] `context.md` exists
- [ ] `contracts/` directory exists with at least one file
- [ ] `tasks/` directory has at least one task file
- [ ] All tasks referenced in manifest exist in `tasks/`
## Error Handling
### Task Not in Manifest
WARNING: task-005-api.md exists but not in manifest.json -> Skipping prompt generation (add to manifest first)
### Missing Contract Reference
WARNING: task-001 references contracts/types.py but file doesn't exist -> Generate prompt with warning comment
## Regeneration Mode
When prompts already exist:
1. **Backup existing**: Move to `prompts.backup-{timestamp}/`
2. **Generate fresh**: Create new prompts from current tasks
3. **Report diff**: Show what changed
```bash
# Command triggers regeneration
/parallel-generate-prompts parallel/TS-0042-inventory/ --force
Token Optimization
The generated prompts are optimized for token efficiency:
- Context is included once (not repeated per section)
- Contract paths reference files (agent reads them)
- Scope uses compact CREATE/MODIFY/BOUNDARY notation
- Checklist is actionable, not verbose
Integration with cpo
The cpo run command expects:
manifest.jsonwith wave structureprompts/task-NNN.txtfor each task in manifest
This skill ensures prompts match what cpo expects.
Post-Generation Validation
After generating prompts, verify EACH prompt file contains:
# Quick validation - each prompt should have these markers
for f in prompts/task-*.txt; do
echo "=== $f ==="
grep -c "=== OUTPUT FORMAT" "$f" || echo "MISSING: OUTPUT FORMAT"
grep -c "=== EXECUTION INSTRUCTIONS" "$f" || echo "MISSING: EXECUTION INSTRUCTIONS"
grep -c "=== COMPLETION SIGNAL" "$f" || echo "MISSING: COMPLETION SIGNAL"
grep -c '"task_completed"' "$f" || echo "MISSING: JSON block"
done
If any prompt is missing these sections, regenerate it using the exact template from Step 4.
Related Skills
| Skill | Relationship |
|---|---|
parallel-decompose |
Creates tasks/ that this skill reads |
parallel-task-format |
Defines the task YAML format parsed here |
parallel-execution |
Consumes the prompts/ this skill generates |
parallel-agents |
Overall workflow context |
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