filesnap: Skill for Claude Code

.claude/skills/speckit-specify/SKILL.md

speckit-specify is a skill for Claude Code from extracurricular-ai/filesnap. It costs 19 tokens per session (4,065 once invoked), scanned A, a copy of speckit-specify, Apache-2.0.

A feature-specification skill that turns a natural-language feature request into a written specification. It can also run enabled project hooks, which are predefined actions performed before specification work.

In plain words
What is it for?
Use it to create or update feature requirements from a prompt, while checking the project's optional pre-specification extensions.
Why use it?
It gives an idea a structured, reviewable definition before implementation begins. Project-specific hooks can add required preparation steps when configured.

Skill for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter.

This is extracurricular-ai/filesnap's own configuration. It tells Claude Code how to work on filesnap 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 filesnap configures →

Reuse

Borrowing it

Nothing to install: this file belongs to extracurricular-ai/filesnap. 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/extracurricular-ai/filesnap/main/.claude/skills/speckit-specify/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/extracurricular-ai/filesnap

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 speckit-specify

README.md
[![agentmods](https://agentmods.dev/badge/skills/extracurricular-ai/filesnap/speckit-specify/github.svg)](https://agentmods.dev/skills/extracurricular-ai/filesnap/speckit-specify)
Your own site
<a href="https://agentmods.dev/skills/extracurricular-ai/filesnap/speckit-specify"><img src="https://agentmods.dev/badge/skills/extracurricular-ai/filesnap/speckit-specify/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 speckit-specify

Your own site · 80×15
<a href="https://agentmods.dev/skills/extracurricular-ai/filesnap/speckit-specify"><img src="https://agentmods.dev/badge/skills/extracurricular-ai/filesnap/speckit-specify.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 19 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,065 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.
Origin 91% 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 5.1 $0.00019 $0.04065
Opus 5 $0.00010 $0.02032
Sonnet 5 $0.00004 $0.00813
Haiku 4.5 $0.00002 $0.00407

Measured 9d ago against content hash 42fe016b9183, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

speckit-specify 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.

Origin

This is a copy

91% identical to speckit-specify — 132 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/skills/speckit-specify/SKILL.md · 349 lines

How it starts

The opening of the file, as written. The whole thing — 349 lines — stays where its author put it; the contents beside it link to each section on GitHub.

User Input

$ARGUMENTS

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

Pre-Execution Checks

Check for extension hooks (before specification):

  • Check if .specify/extensions.yml exists in the project root.
  • If it exists, read it and look for entries under the hooks.before_specify key
  • If the YAML cannot be parsed or is invalid, skip hook checking silently and continue normally
  • Filter out hooks where enabled is explicitly false. Treat hooks without an enabled field as enabled by default.
  • For each remaining hook, do not attempt to interpret or evaluate hook condition expressions:
    • If the hook has no condition field, or it is null/empty, treat the hook as executable
    • If the hook defines a non-empty condition, skip the hook and leave condition evaluation to the HookExecutor implementation
  • When constructing command invocations from hook command names, replace dots (.) with hyphens (-). For example, speckit.git.commit/speckit-git-commit.
  • For each executable hook, output the following based on its optional flag:
    • Optional hook (optional: true):
      ## Extension Hooks
      
      **Optional Pre-Hook**: {extension}
      Command: `/{command}`
      Description: {description}
      
      Prompt: {prompt}
      To execute: `/{command}`
      
    • Mandatory hook (optional: false):
      ## Extension Hooks
      
      **Automatic Pre-Hook**: {extension}
      Executing: `/{command}`
      EXECUTE_COMMAND: {command}
      
      Wait for the result of the hook command before proceeding to the Outline.
      
      After emitting the block above you MUST actually invoke the hook and wait for it to finish before continuing. Run it the same way you would run the command yourself in this agent/session (the invocation may differ from the literal {command} id shown above, e.g. a skills-mode agent runs it as /skill:speckit-... or $speckit-...). Emitting the block alone does not run the hook.
  • If no hooks are registered or .specify/extensions.yml does not exist, skip silently

Read the full file on GitHub · 349 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 · 349 lines · 19 tokens per session scan A 42fe016b9183

Subscribe to this mod's changes

speckit-specify is a skill published in the GitHub repository extracurricular-ai/filesnap (21 stars, last pushed 13d ago), licensed Apache-2.0. It adds 19 tokens to every session and 4,065 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 91% identical to speckit-specify, differing in 132 lines, and is treated as a copy.

Related

Other skills, from other repositories

claudexor

Use the local Claudexor control plane for harness-agnostic coding work across Claude Code, Codex, Cursor, and OpenCode. Use when a task benefits from route-aware harness and account selection, quota-aware account rotation, shared thread context, read-only planning or research, best-of-N execution, or cross-harness…

razzant/claudexor · 73 tokens

copperhead

Change or verify a KiCad project through copperhead's gated pipeline. Use whenever a task touches .kicadsch or .kicadpcb files, a schematic, a PCB layout, a netlist, ERC/DRC, a BOM, or hardware design docs — instead of editing those files directly.

copperheadhq/copperhead · 69 tokens

tdd

A test-driven development workflow based on repeating three stages: write a failing test, make it pass, then improve the code. The tests focus on what users can do through public interfaces rather than internal implementation details.

Yulin-Bi/CodeAuto · 53 tokens

to-prd

A product requirements document (PRD) generator that turns a finished discussion and codebase review into a structured backlog item. A PRD records the problem, proposed solution, user needs, implementation decisions, testing decisions, and what is out of scope.

Yulin-Bi/CodeAuto · 50 tokens

claude-code-migration

A guided tool for copying Claude Code settings and project configuration into sid-code. It checks what can be moved, asks before writing, and records what was transferred.

rushengzhou/sid-code · 100 tokens

code-review

A review process for a pull request, which is a proposed set of code changes. It examines the changed code and its surrounding files for bugs, security problems, design issues, and lint errors.

rushengzhou/sid-code · 49 tokens