Is the Establishing Project Context skill free?

Yes. The skill itself is free from GanyuanRan/Aegis. SkillProof publishes the install command and an independent test verdict at no cost.

What is the Establishing Project Context SkillProof Score?

8.8/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 7/10, docs & honesty 5/5.

How do I install Establishing Project Context?

Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.

Can I use Establishing Project Context with Cursor, Copilot, Gemini CLI, Codex or other AI tools?

The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.

Establishing Project Context

Maintains a canonical CONTEXT.md domain glossary so humans and agents share terms

by GanyuanRan · GanyuanRan/Aegis

Tested · Works

Install — copy the command Download source ↗

Test report

Verdict: Tested · Works
Score: 8.8/10
Tested: Jul 21, 2026
Environment: Claude Code 2.x (agent harness)
Upstream re-checked: Aug 10, 2026 · 9dc570e

⚠ The author changed this skill after we tested it. The verdict below describes the version we ran on Jul 21, 2026; it's queued for a re-test.

Fetched SKILL.md and its referenced CONTEXT-FORMAT.md via raw GitHub (both HTTP 200); frontmatter parses with name+description, paths use <project-root> placeholders, and the body contains explicit anti-prompt-injection guidance rather than any security smell. For output I ran one task (splitting an ambiguous "account" term into Customer/User) twice: a baseline CONTEXT.md and a skill-following one. The baseline carried implementation paths, a timestamp, and a TODO/notes log and kept "Account" as a live entry; following the skill stripped all three (both docs explicitly forbid them), applied the canonical _Avoid_ alias form and a Resolved Ambiguities section, and correctly classified the change as evidence A + fact so it wrote directly without asking. Trigger judgments (3 should-fire, 2 should-not) all resolved correctly.

Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works

Installs cleanly 5/5
Triggers reliably 5/5
Output vs. baseline 7/10
Docs & honesty 5/5

What Establishing Project Context does

Maintains project domain terminology in a canonical CONTEXT.md glossary so humans and coding agents use the same terms, classifying each change by evidence grade and by whether it is a settled fact or an open decision before writing. Triggers when the user asks to establish shared project language, or when work surfaces a resolved, vague, conflicting, renamed, or deprecated domain term needing active semantic modeling. Restricts the file to terms and relationships, excluding code paths, timestamps, and logs.

How to install Establishing Project Context

git clone --depth 1 https://github.com/GanyuanRan/Aegis.git /tmp/establishing-project-context-src
mkdir -p ~/.claude/skills
cp -R /tmp/establishing-project-context-src/skills/establishing-project-context ~/.claude/skills/establishing-project-context
# Self-contained: SKILL.md + CONTEXT-FORMAT.md, no external deps, tools, or API keys.
# Part of the Aegis "method pack"; works standalone as a single skill.

Skills live in ~/.claude/skills/ (global) or .claude/skills/ (per-project). Restart Claude Code after installing.

Commands — how to trigger Establishing Project Context

/establishing-project-context Maintains a canonical CONTEXT.md domain glossary so humans and agents share terms

It also activates on plain-language prompts like these:

Establish shared language for this new project
Create a glossary of domain terms for this codebase
Define our project's key domain terminology together

Frequently asked questions

Is the Establishing Project Context skill free?: Yes. The skill itself is free from GanyuanRan/Aegis. SkillProof publishes the install command and an independent test verdict at no cost.
Does Establishing Project Context work with Claude Code?: We tested it with Claude Code 2.x (agent harness) on Jul 21, 2026. Verdict: Tested · Works. Fetched SKILL.md and its referenced CONTEXT-FORMAT.md via raw GitHub (both HTTP 200); frontmatter parses with name+description, paths use <project-root> placeholders, and the body contains explicit anti-prompt-injection guidance rather than any security smell. For output I ran one task (splitting an ambiguous "account" term into Customer/User) twice: a baseline CONTEXT.md and a skill-following one. The baseline carried implementation paths, a timestamp, and a TODO/notes log and kept "Account" as a live entry; following the skill stripped all three (both docs explicitly forbid them), applied the canonical _Avoid_ alias form and a Resolved Ambiguities section, and correctly classified the change as evidence A + fact so it wrote directly without asking. Trigger judgments (3 should-fire, 2 should-not) all resolved correctly.
What is the Establishing Project Context SkillProof Score?: 8.8/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 7/10, docs & honesty 5/5.
How do I install Establishing Project Context?: Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
Can I use Establishing Project Context with Cursor, Copilot, Gemini CLI, Codex or other AI tools?: The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.