market-sizing SKILL.md skillA

market-sizing from amey-thakur/ai-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add amey-thakur/ai-skills/market-sizing@git:20260728.2d6d1c9

Pins git:20260728.2d6d1c9 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
amey-thakur/ai-skills
Path
skills/business-fundamentals/market-sizing/SKILL.md
Versions recorded
1
Latest version
git:20260728.2d6d1c9, committed Jul 28, 2026
Size
1,967 bytes
Repository stars
14
License
MIT

Estimate how large an opportunity actually is, from the bottom up, and state the assumptions that drive the number. Use when evaluating a market, writing a plan, or challenging a large number in a deck.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Market sizing

Most market sizes are top-down and useless: a large industry figure
multiplied by an invented percentage. A bottom-up estimate is smaller,
defensible, and actually informs a decision about whether to build
something.

## Method

1. **Build from units and price, not from a total.** How many potential
   buyers, how many will realistically buy, what they will pay, and how
   often. Each step is arguable, which is the point.
2. **Distinguish the three sizes.** Everyone who could conceivably buy,
   the segment you can actually serve, and what you could realistically
   capture in a few years. Conflating them is the standard deck error.
3. **Cross-check top-down against bottom-up.** Wildly different answers
   mean an assumption is wrong, and finding which is more valuable than
   the number.
4. **State every assumption with its source.** A number whose
   assumptions are visible can be argued with and improved; a single
   figure cannot.
5. **Sanity-check against existing players.** If your estimate implies
   the incumbents should be several times larger than they are, the
   estimate is wrong.
6. **Size the beachhead, not the dream.** The immediately addressable
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add amey-thakur/ai-skills/market-sizing@sha256:2b3f7bb05ff8f9a2

The line at the top of this page pins the label git:20260728.2d6d1c9, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_ay5hpzf4izdoy4ve.svg)](https://markdownregistry.com/a/art_ay5hpzf4izdoy4ve)

4 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Jul 28, 2026.

versioncommittedcommitsizeaudit
git:20260728.2d6d1c9 latest2026-07-28 2d6d1c9 1,967 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (1967 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

amey-thakur/ai-skills · 14 stars · license MIT · pushed 2026-09-06 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_ay5hpzf4izdoy4ve
GET https://markdownregistry.com/api/v1/resolve?ref=amey-thakur/ai-skills/market-sizing
GET https://markdownregistry.com/api/v1/blob/2b3f7bb05ff8f9a2317ce9689815d45d12ea66b4031f9c504fedd0211e9d1f7c

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

More from amey-thakur/ai-skills

ai-skills Cursor rule
amey-thakur/ai-skills · .cursor/rules/ai-skills.mdc · Operate the AI-SKILLS library autonomously, selecting the right skill or prompt for each task.
git:20260721.9534dd9 · audit A · 14 stars
AGENTS.md AGENTS.md file
amey-thakur/ai-skills · AGENTS.md
git:20260728.aa354e7 · audit A · 14 stars
CLAUDE.md CLAUDE.md file
amey-thakur/ai-skills · CLAUDE.md
git:20260721.9534dd9 · audit A · 14 stars
llms.txt@docs llms.txt file
amey-thakur/ai-skills · docs/llms.txt
git:20260728.f55fde9 · audit B · 14 stars
llms.txt llms.txt file
amey-thakur/ai-skills · llms.txt
git:20260906.c8c8420 · audit B · 14 stars
accessibility-review SKILL.md skill
amey-thakur/ai-skills · skills/accessibility/accessibility-review/SKILL.md · Audit a UI for real accessibility, keyboard-first, with concrete failures and fixes rather than checkbox compliance…
git:20260718.7c1285c · audit A · 14 stars
accessible-forms SKILL.md skill
amey-thakur/ai-skills · skills/accessibility/accessible-forms/SKILL.md · Build forms with associated labels, identified errors, clear instructions, and autocomplete attributes. Use when…
git:20260728.fac4544 · audit A · 14 stars
alt-text-writing SKILL.md skill
amey-thakur/ai-skills · skills/accessibility/alt-text-writing/SKILL.md · Write alt text that conveys an image's purpose, marks decorative images empty, and handles functional and complex…
git:20260728.fac4544 · audit A · 14 stars
aria-usage SKILL.md skill
amey-thakur/ai-skills · skills/accessibility/aria-usage/SKILL.md · Use ARIA correctly by preferring native HTML, applying roles/states/properties only where needed, and following known…
git:20260728.fac4544 · audit A · 14 stars
color-contrast SKILL.md skill
amey-thakur/ai-skills · skills/accessibility/color-contrast/SKILL.md · Meet WCAG contrast ratios for text and non-text, never rely on color alone, and verify with tools including in dark…
git:20260728.fac4544 · audit A · 14 stars
focus-management SKILL.md skill
amey-thakur/ai-skills · skills/accessibility/focus-management/SKILL.md · Manage focus on route changes, in modals, and after actions, with visible focus indicators. Use when building…
git:20260728.fac4544 · audit A · 14 stars
keyboard-navigation SKILL.md skill
amey-thakur/ai-skills · skills/accessibility/keyboard-navigation/SKILL.md · Make interfaces fully keyboard-operable with logical focus order, no traps, skip links, and roving tabindex where…
git:20260728.fac4544 · audit A · 14 stars

Every file in amey-thakur/ai-skills

Other files named market-sizing

market-sizing SKILL.md skill
onewave-ai/claude-skills · market-sizing/SKILL.md · TAM/SAM/SOM calculator with deep market research. Produces comprehensive market-sizing.md with top-down and bottom-up…
git:20260608.d82d20f · audit A · 421 stars
market-sizing SKILL.md skill
yonatangross/orchestkit · src/skills/market-sizing/SKILL.md · TAM, SAM and SOM with top-down and bottom-up estimates and cross-checked assumptions. Use when sizing a market or…
v1.0.0 · audit A · 299 stars
market-sizing SKILL.md skill
yonatangross/orchestkit · plugins/ork/skills/market-sizing/SKILL.md · TAM, SAM and SOM with top-down and bottom-up estimates and cross-checked assumptions. Use when sizing a market or…
v1.0.0 · audit A · 299 stars
market-sizing SKILL.md skill
skillmds/skillmd · plugins/competitive-market-intelligence/skills/market-sizing/SKILL.md · Estimate market size using TAM, SAM, and SOM with top-down and bottom-up approaches. Use when sizing a market…
git:20260919.fecc0d5 · audit A · 189 stars
market-sizing SKILL.md skill
akillness/jeo-skills · .agent-skills/market-sizing/SKILL.md · Estimate market size using TAM, SAM, and SOM with top-down and bottom-up approaches. Use when sizing a market…
git:20260919.9f2a908 · audit A · 52 stars
market-sizing SKILL.md skill
lool-ventures/founder-skills · founder-skills/skills/market-sizing/SKILL.md · Builds credible TAM/SAM/SOM analysis with external validation and sensitivity testing for startup fundraising…
git:20261104.b480555 · audit A · 52 stars
market-sizing SKILL.md skill
the-utopia-studio/skills · plugins/utopia-founder-productivity/skills/market-sizing/SKILL.md · Estimate market size using TAM, SAM, and SOM with top-down and bottom-up approaches. Use when sizing a market…
git:20260806.73fec06 · audit A · 7 stars
market-sizing SKILL.md skill
rizwanzafaris/product-manager-os · skills/market-sizing/SKILL.md · Size a market top-down and bottom-up as TAM, SAM, and SOM, reconcile the two within a stated tolerance, and register…
git:20260919.72235e0 · audit A · 4 stars

Browse by kind, by grade A, or by owner.