OpenSpec: Apply

A command for carrying out an approved software change described in OpenSpec files, which record the plan and its tasks.

In plain words
What is it for?
Use it to implement a planned OpenSpec change and mark its completed tasks.
Why use it?
It keeps implementation focused on the agreed scope and keeps the task checklist accurate as work progresses.

Command for Claude Code

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.

agentmods
npx agentmods add commands/fenwei-dev/mcp2skill/apply
Clone the repo
git clone --depth 1 https://github.com/fenwei-dev/mcp2skill

Made for: Claude Code.

Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 296 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod 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 $0.00000 $0.00296
Opus 5 $0.00000 $0.00148
Sonnet 5 $0.00000 $0.00059
Haiku 4.5 $0.00000 $0.00030

Measured yesterday against content hash 40966b7d9c49, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

OpenSpec: Apply 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 yesterday.

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.

Origin

This is a copy

100% identical to OpenSpec: Apply — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/commands/openspec/apply.md · 24 lines

What it actually says


name: OpenSpec: Apply description: Implement an approved OpenSpec change and keep tasks in sync. category: OpenSpec tags: [openspec, apply]

Guardrails

  • Favor straightforward, minimal implementations first and add complexity only when it is requested or clearly required.
  • Keep changes tightly scoped to the requested outcome.
  • Refer to openspec/AGENTS.md (located inside the openspec/ directory—run ls openspec or openspec update if you don't see it) if you need additional OpenSpec conventions or clarifications.

Steps Track these steps as TODOs and complete them one by one.

  1. Read changes/<id>/proposal.md, design.md (if present), and tasks.md to confirm scope and acceptance criteria.
  2. Work through tasks sequentially, keeping edits minimal and focused on the requested change.
  3. Confirm completion before updating statuses—make sure every item in tasks.md is finished.
  4. Update the checklist after all work is done so each task is marked - [x] and reflects reality.
  5. Reference openspec list or openspec show <item> when additional context is required.

Reference

  • Use openspec show <id> --json --deltas-only if you need additional context from the proposal while implementing.
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. yesterday First seen · 24 lines · 0 tokens per session scan A 40966b7d9c49

Subscribe to this mod's changes

OpenSpec: Apply is a command published in the GitHub repository fenwei-dev/mcp2skill (55 stars, last pushed 7mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 296 tokens. A static security scan graded it A with 0 findings. It is 100% identical to OpenSpec: Apply, differing in 0 lines, and is treated as a copy.