add-a-zero

add-a-zero is a skill for Claude Code from sohaibt/founder-mode. It costs 61 tokens per session (1,036 once invoked), scanned A, original, MIT.

A thinking exercise that multiplies a goal by ten and asks what would need to be true to reach it. It is meant to challenge existing assumptions, not to require the ten-times result.

In plain words
What is it for?
Use it when a team is setting goals, feels constrained by current resources, or is optimizing an existing process. It helps identify assumptions, major constraints, and alternative approaches.
Why use it?
It helps teams notice limits built into their current plan and consider different ways around them. The exercise shifts attention from small improvements to the conditions that would enable a much larger result.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter.

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 skills/sohaibt/founder-mode/add-a-zero
Any agent
npx skills add sohaibt/founder-mode --skill add-a-zero
Clone the repo
git clone --depth 1 https://github.com/sohaibt/founder-mode

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 add-a-zero

README.md
[![agentmods](https://agentmods.dev/badge/skills/sohaibt/founder-mode/add-a-zero.svg)](https://agentmods.dev/skills/sohaibt/founder-mode/add-a-zero)
Your own site
<a href="https://agentmods.dev/skills/sohaibt/founder-mode/add-a-zero"><img src="https://agentmods.dev/badge/skills/sohaibt/founder-mode/add-a-zero.svg" alt="Measured on agentmods" height="20"></a>
Per session 61 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,036 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 5.1 $0.00061 $0.01036
Opus 5 $0.00030 $0.00518
Sonnet 5 $0.00012 $0.00207
Haiku 4.5 $0.00006 $0.00104

Measured 6d ago against content hash 3a1338d8039b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

add-a-zero 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 6d 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/add-a-zero/SKILL.md · 98 lines

How it starts

The opening of the file, as written. The whole thing — 98 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Add a Zero

You are a strategic advisor using Brian Chesky's "Add a Zero" technique. When a team presents a goal, Chesky asks: "What would it take to do this 10x?"

The purpose is NOT to mandate 10x. It's to force different thinking about the problem — to unlock first-principles reasoning and surface the constraints that keep teams stuck in incremental mode.

"Not to mandate 10x, but to force different thinking about the problem and unlock first-principles reasoning." — Chesky's framing

The User's Goal

$ARGUMENTS

Your Analysis Process

Step 1: State the Current Goal

Restate their goal clearly. Identify the implied assumptions and constraints baked into it.

Step 2: Add a Zero

Multiply the target by 10. State the new goal explicitly.

Ask: "If you HAD to hit this number — if failure meant the company dies — what would you do differently?"

Step 3: Constraint Explosion

Identify the top 5 constraints that make the 10x goal feel impossible. For each constraint:

Constraint Why it feels real What breaks it What becomes possible
[e.g., "We only have 5 salespeople"] [Current headcount limits] [What if sales wasn't people-dependent? What if the product sold itself?] [Self-serve funnel, PLG motion, zero salespeople needed]

Step 4: The 10x Playbook

For the 10x target, identify 3 fundamentally different approaches that would be required. These should NOT be "do more of what we're doing" — they should be qualitatively different strategies.

For each approach:

  • The strategy — what's the fundamentally different move?
  • Why it's invisible at 1x — why wouldn't you think of this when pursuing the incremental goal?
  • What it requires — what capability, investment, or paradigm shift is needed?
  • Feasibility signal — has anyone done something like this? What's the proof point?

Step 5: The 2x Insight

Here's the real value: after thinking about 10x, what becomes obvious about achieving 2x?

Read the full file on GitHub · 98 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. 6d ago First seen · 98 lines · 61 tokens per session scan A 3a1338d8039b

Subscribe to this mod's changes

add-a-zero is a skill published in the GitHub repository sohaibt/founder-mode (3 stars, last pushed 4mo ago), licensed MIT. It adds 61 tokens to every session and 1,036 once invoked, about $0.0003 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.

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