Agent skill

Amazon Working Backwards

by amplitude in amplitude/builder-skills

Write a PR/FAQ for a product idea using Amazon's Working Backwards process.

No licenceAuto-check passedWriting & Content

Install Amazon Working Backwards

skills CLI
$ npx skills add amplitude/builder-skills --skill amazon-working-backwards -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install amplitude/builder-skills amazon-working-backwards --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/amplitude/builder-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/product-skills/skills/amazon-working-backwards .claude/skills/amazon-working-backwards && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
amazon-working-backwards
GitHub stars
160
Token cost
~1.4k tokens
SKILL.md length
170 words
Files
1
Skills in repo
61
Repo updated
First seen
Licence
None found

At a glance

Write a PR/FAQ for a product idea using Amazon's Working Backwards process.

  • Validating whether an idea is worth building before committing to a spec
  • SKILL.md covers Prompt Template and Tips
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Tasks that involve Help center and FAQ content

What it does

Amazon Working Backwards is an agent skill from amplitude/builder-skills. Write a PR/FAQ for a product idea using Amazon's Working Backwards process. Start from the customer press release and work backward to what needs to be built. Use when validating whether an idea is worth building before committing to a spec.

Its SKILL.md is about 1.4k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Writing & Content, covering Help center and FAQ content and Copywriting. The repository describes itself as: Open-source AI skills for product managers — battle-tested by PMs at Amplitude.

When your agent uses it

  • Validating whether an idea is worth building before committing to a spec
  • Tasks that involve Help center and FAQ content
  • Tasks that involve Copywriting

Example prompts

  • “/amazon-working-backwards”

What it can do on your machine

Read from SKILL.md and the folder at commit 51838c2. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Amazon Working Backwards loads about 1.4k tokens when it runs. Until then it costs about 67 tokens; SKILL.md has 170 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~67
When it runs · the whole SKILL.md, loaded when a task matches
~1.4k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 170 words (~1,386 tokens).

“Start from the customer. Write the press release before you write the code.”

— opening of SKILL.md by amplitude
name
amazon-working-backwards
suggest_when
User has a product idea and wants to pressure-test it, says "PR/FAQ", "working backwards", "write the press release first", "is this worth building", or wants…

Read the full SKILL.md on GitHub

Files

Just SKILL.md in product-skills/skills/amazon-working-backwards of amplitude/builder-skills.

Open the folder on GitHubat commit 51838c2

Compare with similar skills

Amazon Working Backwards next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Amazon Working Backwards compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Amazon Working Backwards this skillamplitude/builder-skills160—~1.4kAutomated safety check: PassNone
Yao Geo Page Blueprintyaojingang/yao-geo-skills871—~789Automated safety check: PassMIT
Bmad Prfaqaj-geddes/claude-code-bmad-skills488—~2.6kAutomated safety check: PassCustom licence
Etsy Product Descriptionnexscope-ai/eCommerce-Skills1.1k—~437Automated safety check: PassMIT
Editing Site ContentComfy-Org/workflow_templates1.3k—~1.8kAutomated safety check: PassMIT
Public RelationsCesarjoquin/Marketing-Skills201—~1.8kAutomated safety check: PassMIT

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Questions about Amazon Working Backwards

What does Amazon Working Backwards do?

Write a PR/FAQ for a product idea using Amazon's Working Backwards process. Amazon Working Backwards is an agent skill from amplitude/builder-skills. Write a PR/FAQ for a product idea using Amazon's Working Backwards process.

When should I use Amazon Working Backwards?

Amazon Working Backwards fits situations like: validating whether an idea is worth building before committing to a spec; tasks that involve Help center and FAQ content; tasks that involve Copywriting.

How do I install Amazon Working Backwards in Claude Code?

Run `npx skills add amplitude/builder-skills --skill amazon-working-backwards -a claude-code`. Or copy the skill folder (product-skills/skills/amazon-working-backwards in amplitude/builder-skills) into .claude/skills/amazon-working-backwards in your project. Claude Code loads it when a task matches its description.

How do I install Amazon Working Backwards in Codex?

Run `npx skills add amplitude/builder-skills --skill amazon-working-backwards -a codex`. Or copy the skill folder (product-skills/skills/amazon-working-backwards in amplitude/builder-skills) into .agents/skills/amazon-working-backwards in your project. Codex loads it when a task matches its description.

Can I use Amazon Working Backwards in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add amplitude/builder-skills --skill amazon-working-backwards -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/amazon-working-backwards, .gemini/skills/amazon-working-backwards, .github/skills/amazon-working-backwards and .opencode/skills/amazon-working-backwards in your project.

What does Amazon Working Backwards need to run?

SKILL.md names no scripts, command-line tools or credentials: Amazon Working Backwards is instructions for the agent only.

Does Amazon Working Backwards access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Amazon Working Backwards safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Amazon Working Backwards use?

No licence was found for Amazon Working Backwards or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Amazon Working Backwards use?

About 1.4k tokens (SKILL.md is roughly 5.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Amazon Working Backwards?

Skills that share tags, products or a category with Amazon Working Backwards: Yao Geo Page Blueprint (yaojingang/yao-geo-skills, 871 stars), Bmad Prfaq (aj-geddes/claude-code-bmad-skills, 488 stars), Etsy Product Description (nexscope-ai/eCommerce-Skills, 1.1k stars) and Editing Site Content (Comfy-Org/workflow_templates, 1.3k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Amazon Working Backwards?

amplitude (a GitHub organization) maintains it in amplitude/builder-skills, which has 160 GitHub stars. The repository holds 61 skills in this directory. The repository was last updated on July 24, 2026.

Source: amplitude/builder-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.