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Official agent skill

Investigation Add

by anthropics in anthropics/claude-for-legal

Add data to an open investigation — documents, interview notes, or observations.

OfficialApache-2.0Auto-check passed

Install Investigation Add

skills CLI
$ npx skills add anthropics/claude-for-legal --skill investigation-add -a claude-code

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

GitHub CLI
$ gh skill install anthropics/claude-for-legal investigation-add --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/anthropics/claude-for-legal.git skills-src && mkdir -p .claude/skills && cp -r skills-src/employment-legal/skills/investigation-add .claude/skills/investigation-add && 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
investigation-add
GitHub stars
9.6k
Used in
2 other repos
Token cost
~339 tokens
SKILL.md length
90 words
Files
1
Skills in repo
147
Repo updated
First seen
Licence
Apache-2.0

At a glance

Add data to an open investigation — documents, interview notes, or observations.

  • Works in 4 steps: Load… → Load the internal-investigation… → After processing, show the surface ratio… → …
  • Interview notes
  • SKILL.md covers Instructions and Examples
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Investigation Add is an agent skill from anthropics/claude-for-legal, published by the product's own GitHub organization. Add data to an open investigation — documents, interview notes, or observations. Processes batches against the documented pull criteria, surfaces significant items, and logs everything reviewed for coverage verification. Use when new evidence, interview notes, or document productions come in for an open investigation.

Its SKILL.md is about 340 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

The repository describes itself as: A suite of plugins for legal workflows. The licence is Apache-2.0.

When your agent uses it

  • Interview notes
  • Document productions come in for an open investigation

Example prompts

  • “/investigation-add”

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

  1. Load ~/.claude/plugins/config/claude-for-legal/employment-legal/CLAUDE.md.
  2. Load the internal-investigation reference skill and run Mode 2 (Add data).
  3. After processing, show the surface ratio and list of surfaced items.
  4. Prompt to update the sources checklist if the data covers a checklist item.

What it can do on your machine

Read from SKILL.md and the folder at commit 4a6c651. 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.

    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

Investigation Add loads about 339 tokens when it runs. Until then it costs about 84 tokens; SKILL.md has 90 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~84
When it runs · the whole SKILL.md, loaded when a task matches
~339

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

The full file from anthropics/claude-for-legal at commit 4a6c651, republished under its Apache-2.0 licence (© anthropics). 90 words, ~339 tokens.

Download SKILL.mdSave it as .claude/skills/investigation-add/SKILL.md (or your agent's skills folder).
name
investigation-add
description
Add data to an open investigation — documents, interview notes, or observations. Processes batches against the documented pull criteria, surfaces significant items, and logs everything reviewed for coverage verification. Use when new evidence, interview notes, or document productions come in for an open investigation.
argument-hint
[matter name or slug, then paste or attach data]

/investigation-add

Adds data to an open investigation log. Processes document batches using documented pull criteria, surfaces significant items, logs everything reviewed for coverage verification.

Instructions

  1. Load ~/.claude/plugins/config/claude-for-legal/employment-legal/CLAUDE.md.
  2. Load the internal-investigation reference skill and run Mode 2 (Add data).
  3. After processing, show the surface ratio and list of surfaced items.
  4. Prompt to update the sources checklist if the data covers a checklist item.

Examples

/employment-legal:investigation-add [matter name]
[paste interview notes]
/employment-legal:investigation-add [matter name]
[attach email export]

Detailed needle-finding process, log entry format, surface-ratio rules, and sources-checklist tracking live in the internal-investigation reference skill — load it before doing substantive work.

© anthropics, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in employment-legal/skills/investigation-add of anthropics/claude-for-legal.

Open the folder on GitHubat commit 4a6c651

Used in 2 other repositories

We found 2 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 2 other GitHub owners. This page covers the copy in anthropics/claude-for-legal, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Investigation Add 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.

Investigation Add compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Investigation Add this skillanthropics/claude-for-legal9.6k2 repos~339Automated safety check: PassApache-2.0
Interviewalirezarezvani/claude-skills28k—~1.1kAutomated safety check: PassMIT
Interviewcodewhale-hq/Codewhale41k—~232Automated safety check: PassMIT
Interview Meaddyosmani/agent-skills105k6 repos~3.8kAutomated safety check: PassMIT
Interview Prepreactive-resume/reactive-resume44k—~10kAutomated safety check: PassMIT
Interview Coachsickn33/agentic-awesome-skills47k2 repos~751Automated safety check: PassMIT

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Questions about Investigation Add

What does Investigation Add do?

Add data to an open investigation — documents, interview notes, or observations. Investigation Add is an agent skill from anthropics/claude-for-legal, published by the product's own GitHub organization. Add data to an open investigation — documents, interview notes, or observations.

When should I use Investigation Add?

Investigation Add fits situations like: interview notes; document productions come in for an open investigation.

How do I install Investigation Add in Claude Code?

Run `npx skills add anthropics/claude-for-legal --skill investigation-add -a claude-code`. Or copy the skill folder (employment-legal/skills/investigation-add in anthropics/claude-for-legal) into .claude/skills/investigation-add in your project. Claude Code loads it when a task matches its description.

How do I install Investigation Add in Codex?

Run `npx skills add anthropics/claude-for-legal --skill investigation-add -a codex`. Or copy the skill folder (employment-legal/skills/investigation-add in anthropics/claude-for-legal) into .agents/skills/investigation-add in your project. Codex loads it when a task matches its description.

Can I use Investigation Add 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 anthropics/claude-for-legal --skill investigation-add -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/investigation-add, .gemini/skills/investigation-add, .github/skills/investigation-add and .opencode/skills/investigation-add in your project.

What does Investigation Add need to run?

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

Does Investigation Add 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 Investigation Add 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 Investigation Add use?

Investigation Add is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Investigation Add use?

About 339 tokens (SKILL.md is roughly 1.4k 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 Investigation Add?

Skills that share tags, products or a category with Investigation Add: Interview (alirezarezvani/claude-skills, 28k stars), Interview (codewhale-hq/Codewhale, 41k stars), Interview Me (addyosmani/agent-skills, 105k stars) and Interview Prep (reactive-resume/reactive-resume, 44k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Investigation Add?

anthropics (a GitHub organization, an official publisher) maintains it in anthropics/claude-for-legal, which has 9,633 GitHub stars. The repository holds 147 skills in this directory. The repository was last updated on September 29, 2026.

Source: anthropics/claude-for-legal on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.