Babysitter is a workflow engine for AI coding agents that enforces predefined steps, quality checks, human approvals, and decision records. It is used to coordinate complex, repeatable agent workflows across supported coding tools. The catalogue contains skills, agents, instructions, settings, a plugin, and an MCP integration for its workflow.
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 a5c-ai/babysitter --skill template-scaffoldinggit clone --depth 1 https://github.com/a5c-ai/babysitterWrote 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/a5c-ai/babysitter/template-scaffolding)<a href="https://agentmods.dev/skills/a5c-ai/babysitter/template-scaffolding"><img src="https://agentmods.dev/badge/skills/a5c-ai/babysitter/template-scaffolding/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/a5c-ai/babysitter/template-scaffolding"><img src="https://agentmods.dev/badge/skills/a5c-ai/babysitter/template-scaffolding.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector 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 | $0.00043 | $0.02108 |
| Opus 5 | $0.00022 | $0.01054 |
| Sonnet 5 | $0.00009 | $0.00422 |
| Haiku 4.5 | $0.00004 | $0.00211 |
Grade A, and why
template-scaffolding 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.
How it starts
The opening of the file, as written. The whole thing — 270 lines — stays where its author put it; the contents beside it link to each section on GitHub.
phase: 72 status: planned created: 2026-03-02 template: phase-prompt variant: standard
Phase 72: OAuth2 Authentication
...
### 7. Template Discovery
List available templates:
Available templates: project - Project definition (PROJECT.md) requirements - Requirements specification (REQUIREMENTS.md) roadmap - Development roadmap (ROADMAP.md) state - Project state (STATE.md) context - Phase context (CONTEXT.md) summary - Phase summary (SUMMARY.md) [3 variants] phase-prompt - Phase plan (PLAN.md) ...
### 8. Template Variant Selection
Automatic variant selection based on context:
```javascript
function selectSummaryVariant(context) {
if (context.isQuickTask) return 'summary-minimal';
if (context.taskCount <= 3) return 'summary-minimal';
if (context.taskCount <= 8) return 'summary-standard';
return 'summary-complex';
}
Tool Use Instructions
Loading and Filling a Template
- Use
Globto locate the template file intemplates/ - Use
Readto load the template content - Replace all
{{VARIABLE}}placeholders with provided values - Process conditional blocks (
{{#if}}...{{/if}},{{#unless}}...{{/unless}}) - Add frontmatter if specified
- Use
Writeto save the filled template to the target path
Batch Generation
- Accept list of template-to-target mappings
- Load each template, fill variables with shared + per-file data
- Write all files, collecting results
- Return list of generated files
Template Discovery
- Use
Globto find all.mdand.jsonfiles intemplates/ - Read first line of each to extract template name/purpose
- Return formatted list
Process Integration
new-project.js- Batch generate PROJECT.md, REQUIREMENTS.md, ROADMAP.md, STATE.mddiscuss-phase.js- Generate CONTEXT.md from context templateplan-phase.js- Generate PLAN.md files from phase-prompt templateverify-work.js- Generate UAT.md from uat templatequick.js- Generate plan and summary using minimal variantsdebug.js- Generate debug session file from debug templatecomplete-milestone.js- Generate milestone archive from milestone-archive templateadd-tests.js- Generate test plan structureresearch-phase.js- Generate RESEARCH.md from research templatemap-codebase.js- Batch generate 7 codebase analysis documents
Output Format
{
"operation": "fill|batch|discover",
"status": "success|error",
"template": "project",
"variant": "standard",
"targetPath": ".planning/PROJECT.md",
"variablesFilled": 12,
"conditionalsProcessed": 3,
"generatedFiles": [
".planning/PROJECT.md",
".planning/REQUIREMENTS.md"
]
}
Configuration
| Setting | Default | Description |
|---|---|---|
templatesDir |
templates/ |
Directory containing template files |
summaryVariant |
standard |
Default summary variant |
injectFrontmatter |
true |
Auto-add frontmatter to generated files |
variableDelimiter |
{{...}} |
Variable placeholder syntax |
Error Handling
| Error | Cause | Resolution |
|---|---|---|
Template not found |
Template name does not match any file | List available templates, suggest closest match |
Unfilled variable |
Variable not provided in data | Use empty string or placeholder marker |
Target path exists |
File already at target location | Prompt for overwrite/append/skip |
Invalid conditional |
Malformed if/unless block | Fix template syntax |
Batch partial failure |
Some files in batch failed | Report which succeeded and which failed |
Constraints
- Templates must be idempotent (filling same template with same data produces same output)
- Never modify template source files; only read them
- Generated files must be valid markdown (or JSON for config.json)
- Variable names must be uppercase with underscores only
- Conditional blocks must be properly nested and closed
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 9d ago First seen · 270 lines · 43 tokens per session scan A 4fd3f50e1dc3
template-scaffolding is a skill published in the GitHub repository a5c-ai/babysitter (1,788 stars, last pushed 7d ago), licensed MIT. It adds 43 tokens to every session and 2,108 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 2026-09-03.
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