agentmods.dev

amby.specify

A command that turns a feature idea into a written product specification, including user stories, requirements, acceptance tests, and measurable goals.

In plain words
What is it for?
Use it to start a new feature specification in an AmbyKit project, with priorities and Given/When/Then acceptance criteria.
Why use it?
It gives a development team a shared description of what to build and why, while marking unknown details instead of silently guessing.

Command for Claude Code

2 7d ago A scan 18 tokens original MIT
View the source file ambystechcom/AmbyKit
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/ambystechcom/ambykit/amby.specify
Clone the repo
git clone --depth 1 https://github.com/ambystechcom/AmbyKit

Made for: Claude Code.

Per session 18 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 502 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00018 $0.00502
Opus 5 $0.00009 $0.00251
Sonnet 5 $0.00004 $0.00100
Haiku 4.5 $0.00002 $0.00050

Measured 2d ago against content hash f68967d1cb21, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

amby.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 2d 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/commands/amby.specify.md · 30 lines

What it actually says

Act as the Product Manager in @.amby/roles/pm.md and say so in your first line. If $ARGUMENTS contains --as <id>, use @.amby/roles/<id>.md instead; if that file is missing, stop and list the files in .amby/roles/.

Write a specification for: $ARGUMENTS

Context: read @.amby/constitution.md and the structure of @.amby/templates/spec.md only. Do not read other specs.

  1. Create the feature dir specs/NNN-slug/ (next number, kebab-slug from the title) and write spec.md following @.amby/templates/spec.md.
  2. Define user stories (US-#): role / capability / benefit, a priority (P1/P2/P3), why that priority, an independent-test statement, and depends-on/blocked-by if any. Set status: draft.
  3. Write acceptance criteria in Given/When/Then per story.
  4. Write functional requirements (FR-###) in EARS notation (SHALL / WHEN / WHILE / IF-THEN / WHERE). Each must be testable.
  5. Write measurable, tech-agnostic success criteria (SC-###).
  6. Capture WHAT/WHY only — no technology choices. Flag every unknown inline as [NEEDS CLARIFICATION: …] instead of guessing.
  7. If .amby/config.json has "worktrees": true and this is a git repo, run ambykit worktree NNN-slug (the only command to run) and tell the user to continue in .worktrees/NNN-slug/. Otherwise skip this step (say why if isolation was enabled but git is absent).

Keep it tight. Reference the constitution by principle number where relevant; don't restate it.

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. 2d ago First seen · 30 lines · 18 tokens per session scan A f68967d1cb21

Subscribe to this mod's changes

amby.specify is a command published in the GitHub repository ambystechcom/AmbyKit (2 stars, last pushed 7d ago), licensed MIT. It adds 18 tokens to every session and 502 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.

Planningagent-skillsagentic-codingagentic-workflowai-codingai-toolsspec
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