specification-generation

specification-generation is a skill for Claude Code from a5c-ai/babysitter. It costs 13 tokens per session (288 once invoked), scanned A, original, MIT.

A specification-writing skill that turns gathered requirements into a technical plan covering architecture, technologies, data, APIs, and recorded design decisions.

In plain words
What is it for?
It helps choose a technology stack, define system structure, data models, API contracts, and architecture decision records, then refine them through review.
Why use it?
It gives developers a shared implementation plan before coding starts and exposes architectural questions early.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit It helps choose a technology stack, define system structure, data models, API contracts, and architecture decision records, then refine them through review.

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Install with agentmods
npx agentmods add skills/a5c-ai/babysitter/specification-generation
About the project

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.

a5c-ai/babysitter · 1,778 stars · on GitHub · a5c.ai

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 a5c-ai/babysitter --skill specification-generation
Clone the repo
git clone --depth 1 https://github.com/a5c-ai/babysitter

Made for: Claude Code.

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 specification-generation

README.md
[![agentmods](https://agentmods.dev/badge/skills/a5c-ai/babysitter/specification-generation/github.svg)](https://agentmods.dev/skills/a5c-ai/babysitter/specification-generation)
Your own site
<a href="https://agentmods.dev/skills/a5c-ai/babysitter/specification-generation"><img src="https://agentmods.dev/badge/skills/a5c-ai/babysitter/specification-generation/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.

agentmods 80×15 button for specification-generation

Your own site · 80×15
<a href="https://agentmods.dev/skills/a5c-ai/babysitter/specification-generation"><img src="https://agentmods.dev/badge/skills/a5c-ai/babysitter/specification-generation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 13 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 288 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 $0.00013 $0.00288
Opus 5 $0.00006 $0.00144
Sonnet 5 $0.00003 $0.00058
Haiku 4.5 $0.00001 $0.00029

Measured 5d ago against content hash e27dc867364c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

specification-generation 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 5d 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.

library/methodologies/maestro/skills/specification-generation/SKILL.md · 33 lines

What it actually says

Specification Generation

Capabilities

Transforms requirements from PM interviews into structured technical specifications. Includes technology stack selection, system architecture, data models, API contracts, and architecture decision records (ADRs).

Tool Use Instructions

  • Use Read to examine requirements documents and existing specs
  • Use Grep/Glob to find related architectural patterns in the codebase
  • Use Write to generate the technical specification document
  • Use Edit to refine specs based on Architect feedback

Process Integration

  • Used in maestro-orchestrator.js Phase 2-3 (Architect Review, Tech Spec)
  • Maps to tasks: maestro-pm-spec-generation, maestro-architect-tech-spec
  • Agents: Product Manager (requirements spec), Architect (technical spec)
  • Iterates with Architect feedback loop until approved
  • Outputs feed into story-decomposition skill
Files

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.

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. 5d ago First seen · 33 lines · 13 tokens per session scan A e27dc867364c

Subscribe to this mod's changes

specification-generation is a skill published in the GitHub repository a5c-ai/babysitter (1,778 stars, last pushed 3d ago), licensed MIT. It adds 13 tokens to every session and 288 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.