Agent skill

Legal Abductive Reasoning

by THUYRan in THUYRan/Legal-Skills-Chinese

Legal abductive reasoning skill for generating and evaluating the most reasonable explanatory hypotheses when evidence is incomplete or facts are ambiguous.

No licenceAuto-check passedResearch & Science

Install Legal Abductive Reasoning

skills CLI
$ npx skills add THUYRan/Legal-Skills-Chinese --skill legal-abductive-reasoning -a claude-code

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

GitHub CLI
$ gh skill install THUYRan/Legal-Skills-Chinese legal-abductive-reasoning --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/THUYRan/Legal-Skills-Chinese.git skills-src && mkdir -p .claude/skills && cp -r skills-src/English/skills/Legal-Abductive-Reasoning .claude/skills/legal-abductive-reasoning && 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
legal-abductive-reasoning
GitHub stars
874
Token cost
~4k tokens
SKILL.md length
1,349 words
Files
1
Skills in repo
71
Repo updated
First seen
Licence
None found

At a glance

Legal abductive reasoning skill for generating and evaluating the most reasonable explanatory hypotheses when evidence is incomplete or facts are ambiguous.

  • Works in 8 steps: Core Concept: What Is Abductive Reasoning? → Mill’s Five Methods: Tools for… → Workflow: Five-Step Abductive Analysis → …
  • Needs to propose possible legal explanations
  • SKILL.md covers 1. Core Concept: What Is…, 2. Mill’s Five Methods: Tools…, 3. Workflow: Five-Step… and 4. Full Example: Abductive…, plus 4 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Legal Abductive Reasoning is an agent skill from THUYRan/Legal-Skills-Chinese. Legal abductive reasoning skill for generating and evaluating the most reasonable explanatory hypotheses when evidence is incomplete or facts are ambiguous. Combines Mill’s five methods (agreement, difference, joint method, residues, concomitant variation) for structured causal inference. Triggered when the user needs to “propose possible legal explanations,” “generate defense/prosecution hypotheses,” “evaluate multiple readings of evidence,” or “infer the best explanation from incomplete facts.” Applies to case…

Its SKILL.md is about 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 Research & Science, covering Hypothesis generation and Econometrics and empirical research.

When your agent uses it

  • Needs to propose possible legal explanations
  • Generate defense/prosecution hypotheses
  • Evaluate multiple readings of evidence
  • Infer the best explanation from incomplete facts. Applies to case analysis

Example prompts

  • “propose possible legal explanations,”
  • “generate defense/prosecution hypotheses,”
  • “evaluate multiple readings of evidence,”
  • “/legal-abductive-reasoning”

Workflow steps

8 steps, taken from the step headings in SKILL.md.

  1. Core Concept: What Is Abductive Reasoning?
  2. Mill’s Five Methods: Tools for Hypothesis Generation and Testing
  3. Workflow: Five-Step Abductive Analysis
  4. Full Example: Abductive Analysis of Young v. Hitchens
  5. Another Example: Method of Difference in Tort
  6. Output Template
  7. Troubleshooting
  8. Quick Checklist

What it can do on your machine

Read from SKILL.md and the folder at commit c31ef1f. 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 (its code samples are markdown).

    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

Legal Abductive Reasoning loads about 4k tokens when it runs. Until then it costs about 162 tokens; SKILL.md has 1,349 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~162
When it runs · the whole SKILL.md, loaded when a task matches
~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 1,349 words (~3,996 tokens).

name
legal-abductive-reasoning

Read the full SKILL.md on GitHub

Files

Just SKILL.md in English/skills/Legal-Abductive-Reasoning of THUYRan/Legal-Skills-Chinese.

Open the folder on GitHubat commit c31ef1f

Compare with similar skills

Legal Abductive Reasoning 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.

Legal Abductive Reasoning compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Legal Abductive Reasoning this skillTHUYRan/Legal-Skills-Chinese874—~4kAutomated safety check: PassNone
Hypogenicdavila7/claude-code-templates33k10 repos~5.4kAutomated safety check: PassMIT
Assess Outlinebrycewang-stanford/Auto-Empirical-Research-Skills4.6k—~2.9kAutomated safety check: PassCustom licence
Designing Experimentsforyourhealth111-pixel/Vibe-Skills3.6k—~600Automated safety check: PassApache-2.0
Econ Intro Writingbrycewang-stanford/Auto-Empirical-Research-Skills4.6k—~3.1kAutomated safety check: PassCustom licence
Hypothesis Generationspacering-net/codeg3.9k14 repos~3.6kAutomated safety check: NotesMIT

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Questions about Legal Abductive Reasoning

What does Legal Abductive Reasoning do?

Legal abductive reasoning skill for generating and evaluating the most reasonable explanatory hypotheses when evidence is incomplete or facts are ambiguous. Legal Abductive Reasoning is an agent skill from THUYRan/Legal-Skills-Chinese. Legal abductive reasoning skill for generating and evaluating the most reasonable explanatory hypotheses when evidence is incomplete or facts are ambiguous.

When should I use Legal Abductive Reasoning?

Legal Abductive Reasoning fits situations like: needs to propose possible legal explanations; generate defense/prosecution hypotheses; evaluate multiple readings of evidence; infer the best explanation from incomplete facts. Applies to case analysis.

How do I install Legal Abductive Reasoning in Claude Code?

Run `npx skills add THUYRan/Legal-Skills-Chinese --skill legal-abductive-reasoning -a claude-code`. Or copy the skill folder (English/skills/Legal-Abductive-Reasoning in THUYRan/Legal-Skills-Chinese) into .claude/skills/legal-abductive-reasoning in your project. Claude Code loads it when a task matches its description.

How do I install Legal Abductive Reasoning in Codex?

Run `npx skills add THUYRan/Legal-Skills-Chinese --skill legal-abductive-reasoning -a codex`. Or copy the skill folder (English/skills/Legal-Abductive-Reasoning in THUYRan/Legal-Skills-Chinese) into .agents/skills/legal-abductive-reasoning in your project. Codex loads it when a task matches its description.

Can I use Legal Abductive Reasoning 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 THUYRan/Legal-Skills-Chinese --skill legal-abductive-reasoning -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/legal-abductive-reasoning, .gemini/skills/legal-abductive-reasoning, .github/skills/legal-abductive-reasoning and .opencode/skills/legal-abductive-reasoning in your project.

What does Legal Abductive Reasoning need to run?

SKILL.md names no scripts, command-line tools or credentials: Legal Abductive Reasoning is instructions for the agent only.

Does Legal Abductive Reasoning 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 Legal Abductive Reasoning 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 Legal Abductive Reasoning use?

No licence was found for Legal Abductive Reasoning or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Legal Abductive Reasoning use?

About 4k tokens (SKILL.md is roughly 16k 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 Legal Abductive Reasoning?

Skills that share tags, products or a category with Legal Abductive Reasoning: Hypogenic (davila7/claude-code-templates, 33k stars), Assess Outline (brycewang-stanford/Auto-Empirical-Research-Skills, 4.6k stars), Designing Experiments (foryourhealth111-pixel/Vibe-Skills, 3.6k stars) and Econ Intro Writing (brycewang-stanford/Auto-Empirical-Research-Skills, 4.6k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Legal Abductive Reasoning?

THUYRan (a GitHub user) maintains it in THUYRan/Legal-Skills-Chinese, which has 874 GitHub stars. The repository holds 71 skills in this directory. The repository was last updated on August 22, 2026.

Source: THUYRan/Legal-Skills-Chinese on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.