ai-platform-engineering: Skill for Claude Code

.claude/skills/speckit.plan/SKILL.md

speckit.plan is a skill for Claude Code from caipe-io/ai-platform-engineering. It costs 0 tokens per session (980 once invoked), scanned A, original, Apache-2.0.

A guide for creating an implementation plan from a software specification. A specification describes what a feature should do; the plan turns it into design, contracts, research, and phases of work.

In plain words
What is it for?
Use it to load a feature specification and project rules, outline the solution, record technical unknowns, and prepare handoffs for creating tasks or checklists.
Why use it?
It organizes the work before coding and highlights missing information or rule violations that need attention.

Skill for Claude Code

Written for Claude Code: $ARGUMENTS substitution.

This is caipe-io/ai-platform-engineering's own configuration. It tells Claude Code how to work on ai-platform-engineering itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything ai-platform-engineering configures →

Reuse

Borrowing it

Nothing to install: this file belongs to caipe-io/ai-platform-engineering. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/caipe-io/ai-platform-engineering/main/.claude/skills/speckit.plan/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/caipe-io/ai-platform-engineering

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
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Your own site · 80×15
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Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 980 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 $0.00000 $0.00980
Opus 5 $0.00000 $0.00490
Sonnet 5 $0.00000 $0.00196
Haiku 4.5 $0.00000 $0.00098

Measured 9d ago against content hash dca4fc7515f9, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

speckit.plan 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.

.claude/skills/speckit.plan/SKILL.md · 106 lines

How it starts

The opening of the file, as written. The whole thing — 106 lines — stays where its author put it; the contents beside it link to each section on GitHub.


description: Generate implementation plan from a spec handoffs:

  • label: Create Tasks agent: speckit.tasks prompt: Break the plan into tasks send: true
  • label: Create Checklist agent: speckit.checklist prompt: Create a checklist for the following domain... scripts: sh: scripts/bash/setup-plan.sh --json ps: scripts/powershell/setup-plan.ps1 -Json agent_scripts: sh: scripts/bash/update-agent-context.sh AGENT ps: scripts/powershell/update-agent-context.ps1 -AgentType AGENT

User Input

$ARGUMENTS

You MUST consider the user input before proceeding (if not empty).

Outline

  1. Setup: Run {SCRIPT} from repo root and parse JSON for FEATURE_SPEC, IMPL_PLAN, SPECS_DIR, BRANCH. For single quotes in args like "I'm Groot", use escape syntax: e.g 'I'''m Groot' (or double-quote if possible: "I'm Groot").

  2. Load context: Read FEATURE_SPEC and /memory/constitution.md. Load IMPL_PLAN template (already copied).

  3. Execute plan workflow: Follow the structure in IMPL_PLAN template to:

    • Fill Technical Context (mark unknowns as "NEEDS CLARIFICATION")
    • Fill Constitution Check section from constitution
    • Evaluate gates (ERROR if violations unjustified)
    • Phase 0: Generate research.md (resolve all NEEDS CLARIFICATION)
    • Phase 1: Generate data-model.md, contracts/, quickstart.md
    • Phase 1: Database migrations — When Storage is not N/A, generate db-migration.md (or e.g. mongodb-migration.md): required vs no-op, schema/index/backfill, rollback; link data-model.md. Stateless: omit file; note N/A in plan.md.
    • Phase 1: Update agent context by running the agent script
    • Re-evaluate Constitution Check post-design
  4. Stop and report: Command ends after Phase 2 planning. Report branch, IMPL_PLAN path, and generated artifacts.

Read the full file on GitHub · 106 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 · 106 lines · 0 tokens per session scan A dca4fc7515f9

Subscribe to this mod's changes

speckit.plan is a skill published in the GitHub repository caipe-io/ai-platform-engineering (407 stars, last pushed today), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 980 tokens. 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.