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Development

An AI agent skill from danielmiessler/LifeOS, scored 73 out of 100 by code.

73/ 100B

Code score by group

  • Spec12/20
  • Description15/20
  • Procedure12/15
  • Done criteria4/15
  • Resources10/10
  • Scripts8/8
  • Safety7/7
  • Upkeep5/5

It loses the most points in Done criteria (11), the group that checks whether there is a checklist and a step that verifies the work.

What the author says it does

Builds, tests, modifies and checks up on software against its ISA, from a one-file change to a giant system. Build turns intent into ISA criteria and makes them pass; Test proves the ISA is well formed, matches the code, and every criterion's Assay eval passes; Modify changes criteria first, then code; Checkup joins the ISA with production, Vigil, Errata and Achilles, says why each red criterion is red, and repairs the ISA. Each run is sized to the ask: small work inline, wide work a workflow. USE WHEN build an app, site, game, tool, CLI or pipeline, start a new project, implement or change a…

This is the description in the skill's own SKILL.md, written by its author, not by SkillCheatSheet.

Repository
danielmiessler/LifeOS
Folder
LifeOS/install/skills/Development
License
MIT
GitHub stars
19,841
SKILL.md lines
120
Other files
12

Add Development to your agent

npx skills add danielmiessler/LifeOS --skill Development

The command uses the open skills CLI. A skill is instructions and scripts your agent will follow, so read it first: open the folder on GitHub at the commit that was scored.

Labelled for

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  3. Order

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  4. USStats

    Query the configured long-run US almanac (90+ annual series on economy, debt, cost of living, health, crime, family, trust, energy, many back to the 1940s: trends, verdicts, mover…

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  5. StoryExplanation

    Generates narrative explanations in the user's first-person voice, from 3-part narrative to CSE numbered points, each a standalone social-ready thought. USE WHEN story explanation…

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  6. Webdesign

    Designs and integrates web interfaces via DirectDesign (inline, Anthropic frontend-design philosophy, the default) or NativeDesign (/design artboards plus /design-sync design-syst…

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  7. Art

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  8. HillClimb

    Improves anything in LifeOS (a skill, workflow, eval, ISA, prompt, rule or code metric) by experiment: finds its real misses in Errata, Assay and its ISA, draws changes from varie…

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All skills in danielmiessler/LifeOS

Scores come from a snapshot of 300 public GitHub repositories taken on 12 November 2026. Every score is the result of fixed checks run by code; no AI is involved. How scoring works.