specify

specify is a skill for Claude Code, Codex from akka/ai-marketplace. It costs 16 tokens per session (4,289 once invoked), scanned A, original, Apache-2.0.

A workflow for turning a plain-language feature idea into a written feature specification. It checks that the project has the Akka setup and files needed to continue.

In plain words
What is it for?
Use it to record requirements, acceptance criteria, and other details for a new or changed feature in an Akka project.
Why use it?
It gives a feature a clear, reviewable description before planning or coding begins.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to record requirements, acceptance criteria, and other details for a new or changed feature in an Akka project.

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Install with agentmods
npx agentmods add skills/akka/ai-marketplace/specify
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 akka/ai-marketplace --skill specify
Clone the repo
git clone --depth 1 https://github.com/akka/ai-marketplace

Made for: Claude Code, Codex.

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 specify

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/akka/ai-marketplace/specify"><img src="https://agentmods.dev/badge/skills/akka/ai-marketplace/specify.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 16 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,289 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 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 $0.00016 $0.04289
Opus 5 $0.00008 $0.02145
Sonnet 5 $0.00003 $0.00858
Haiku 4.5 $0.00002 $0.00429

Measured 9d ago against content hash 39d080309fab, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

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.

skills/specify/SKILL.md · 301 lines

How it starts

The opening of the file, as written. The whole thing — 301 lines — stays where its author put it; the contents beside it link to each section on GitHub.

User Input

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

Outline

The text the user typed after /akka:specify in the triggering message is the feature description. Assume you always have it available in this conversation even if the user's request appears literally below. Do not ask the user to repeat it unless they provided an empty command.

Given that feature description, do this:

  1. Prerequisite check: Before doing anything else, verify the environment is ready:

    • Call akka_sdd_list_specs — if this MCP tool is not available, the Akka MCP server is not configured. Stop and tell the user: "The Akka MCP server is not running. Run /akka:setup first to configure your project, or run akka specify init . from the terminal."
    • Check if the current directory has a pom.xml or .akka/ directory. If neither exists, warn: "This doesn't look like an Akka project directory. Run /akka:setup to scaffold a new project, or cd into an existing one."
    • If both checks pass, proceed.
  2. Generate a concise short name (2-4 words) for the branch:

    • Analyze the feature description and extract the most meaningful keywords
    • Create a 2-4 word short name that captures the essence of the feature
    • Use action-noun format when possible (e.g., "add-user-auth", "fix-payment-bug")
    • Preserve technical terms and acronyms (OAuth2, API, JWT, etc.)
    • Keep it concise but descriptive enough to understand the feature at a glance
    • Examples:
      • "I want to add user authentication" → "user-auth"
      • "Implement OAuth2 integration for the API" → "oauth2-api-integration"
      • "Create a dashboard for analytics" → "analytics-dashboard"
      • "Fix payment processing timeout bug" → "fix-payment-timeout"
  3. Check for existing branches before creating new one:

    a. First, fetch all remote branches to ensure we have the latest information.

    b. Find the highest feature number across all sources for the short-name:

    • Remote branches: git ls-remote --heads origin | grep -E 'refs/heads/[0-9]+-<short-name>$'
    • Local branches: git branch | grep -E '^[* ]*[0-9]+-<short-name>$'
    • Specs directories: Check for directories matching specs/[0-9]+-<short-name>

Read the full file on GitHub · 301 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 · 301 lines · 16 tokens per session scan A 39d080309fab

Subscribe to this mod's changes

specify is a skill published in the GitHub repository akka/ai-marketplace (6 stars, last pushed yesterday), licensed Apache-2.0. It adds 16 tokens to every session and 4,289 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 2026-08-31.