product-on-purpose/thinking-framework-skills · skills/think-fermi-estimation/SKILL.md

think-fermi-estimation skillA

think-fermi-estimation is agent-read markdown (skill) from product-on-purpose/thinking-framework-skills: Produces a Fermi decomposition worksheet that estimates an unknown numeric quantity by factoring it into a chain of order-of-magnitude sub-estimates, guessing each to within a band, then multiplying back to a point estimate plus a compounded low/high range, with an independence check and a dominant-uncertainty flag. Use when you need a number and no lookup-able data or genuine reference class exists, so the magnitude has to be built from factors (for example sizing a market, a load, a cost, or a.

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add product-on-purpose/thinking-framework-skills/think-fermi-estimation@v0.1.0
Exact content
mdr add product-on-purpose/thinking-framework-skills/think-fermi-estimation@sha256:c266c7f562336366

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

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Versions

versioncommittedcommitsizeaudit
v0.1.0 latest2026-09-15 01156a8 8,199 BA view · diff
v0.1.02026-06-02 c5c4a9c 8,155 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, 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 (8199 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

product-on-purpose/thinking-framework-skills · 16 stars · license Apache-2.0 · pushed 2026-09-15 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_ewu63lvnel4mgxvu
GET https://markdownregistry.com/api/v1/resolve?ref=product-on-purpose/thinking-framework-skills/think-fermi-estimation
GET https://markdownregistry.com/api/v1/blob/c266c7f562336366367965463b82e0d51741e393bfcfa8e791fc1a4e703b3b47