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Agent skill

Forge

by cwinvestments in cwinvestments/memstack

A skill your agent uses when the user says 'forge this', 'new skill', 'create enchantment', or wants to create a MemStack skill.

MITAuto-check passed

Install Forge

skills CLI
$ npx skills add cwinvestments/memstack --skill forge -a claude-code

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

GitHub CLI
$ gh skill install cwinvestments/memstack forge --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/cwinvestments/memstack.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/forge .claude/skills/forge && 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
forge
GitHub stars
423
Token cost
~505 tokens
SKILL.md length
215 words
Files
1
Skills in repo
87
Repo updated
First seen
Licence
MIT

At a glance

A skill your agent uses when the user says 'forge this', 'new skill', 'create enchantment', or wants to create a MemStack skill.

  • Works in 5 steps: Ask the user → Generate the skill file with v2.1 format → Write the file to… → …
  • The user says forge this
  • SKILL.md covers Activation, Protocol, Inputs and Outputs, plus 2 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Forge is an agent skill from cwinvestments/memstack. Use when the user says 'forge this', 'new skill', 'create enchantment', or wants to create a MemStack skill.

Its SKILL.md is about 510 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: Structured skill framework for Claude Code. 130 skills, persistent memory, TokenStack compression, localhost dashboard with 3-agent runner, real-time streaming, MCP tools. The licence is MIT.

When your agent uses it

  • The user says forge this
  • Create enchantment
  • Wants to create a MemStack skill

Example prompts

  • “forge this”
  • “new skill”
  • “create enchantment”
  • “/forge”

Workflow steps

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

  1. Ask the user
  2. Generate the skill file with v2.1 format
  3. Write the file to $MEMSTACK_PATH/skills/{name}.md
  4. Update MEMSTACK.md: add a new row to the Skill Index table
  5. Confirm creation: show the skill summary

What it can do on your machine

Read from SKILL.md and the folder at commit 00370ce. 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

Forge loads about 505 tokens when it runs. Until then it costs about 29 tokens; SKILL.md has 215 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~29
When it runs · the whole SKILL.md, loaded when a task matches
~505

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 cwinvestments/memstack at commit 00370ce, republished under its MIT licence (© cwinvestments). 215 words, ~505 tokens.

Download SKILL.mdSave it as .claude/skills/forge/SKILL.md (or your agent's skills folder).
name
forge
description
Use when the user says 'forge this', 'new skill', 'create enchantment', or wants to create a MemStack skill.
version
1.0.0

🔨 Forge: Creating New Enchantment...

Create new MemStack skills or improve existing ones.

Activation

When this skill activates, output:

🔨 Forge: Creating new enchantment...

Then execute the protocol below.

Protocol

Creating a new skill:

  1. Ask the user:

    • What should the skill do?
    • What trigger keywords should activate it?
    • What inputs does it need? What should it output?

  2. Generate the skill file with v2.1 format:

    • YAML frontmatter with name and description ("MUST use when..." format)
    • Activation message (pick an appropriate emoji)
    • Context guard (if the skill could have false positives)
    • Protocol steps
    • Inputs/Outputs
    • Example usage
    • Level history starting at Lv.1

  3. Write the file to $MEMSTACK_PATH/skills/{name}.md

  4. Update MEMSTACK.md: add a new row to the Skill Index table

  5. Confirm creation: show the skill summary

Improving an existing skill:
  1. Read the current skill file
  2. Apply improvements based on user feedback
  3. Increment the level in Level History
  4. Update the file

Inputs

  • Skill concept description, trigger keywords, desired behavior

Outputs

  • New skill .md file in skills/
  • Updated MEMSTACK.md index

Example Usage

User: "forge a new skill called Beacon for health check pinging"

🔨 Forge: Creating new enchantment...

Creating: Beacon
Emoji: 🔔 | Type: Passive | Triggers: "health check", "ping", "uptime"

Writing: skills/beacon.md ✓
Updating: MEMSTACK.md: added row #N ✓

Beacon is ready. Triggers: "health check", "ping", "uptime"

Level History

  • Lv.1: Base: Skill file generation and index updates. (Origin: MemStack v1.0, Feb 2026)
  • Lv.2: Enhanced: Added YAML frontmatter, v2.1 format generation, level tracking. (Origin: MemStack v2.0 MemoryCore merge, Feb 2026)

© cwinvestments, MIT. 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 skills/forge of cwinvestments/memstack.

Open the folder on GitHubat commit 00370ce

Compare with similar skills

Forge 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.

Forge compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Forge this skillcwinvestments/memstack423—~505Automated safety check: PassMIT
Forgeswyxio/skills175—~1.3kAutomated safety check: PassMIT
Forgegeekjourneyx/agora167—~3.4kAutomated safety check: PassMIT
Openclaw Persona Forgeaffaan-m/ECC276k—~1.6kAutomated safety check: PassMIT
Openclaw Persona Forgeaffaan-m/ECC276k—~1.6kAutomated safety check: PassMIT
Plugin Forgedavila7/claude-code-templates32k2 repos~1.3kAutomated safety check: PassMIT

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Questions about Forge

What does Forge do?

A skill your agent uses when the user says 'forge this', 'new skill', 'create enchantment', or wants to create a MemStack skill. Forge is an agent skill from cwinvestments/memstack. Use when the user says 'forge this', 'new skill', 'create enchantment', or wants to create a MemStack skill.

When should I use Forge?

Forge fits situations like: the user says forge this; create enchantment; wants to create a MemStack skill.

How do I install Forge in Claude Code?

Run `npx skills add cwinvestments/memstack --skill forge -a claude-code`. Or copy the skill folder (skills/forge in cwinvestments/memstack) into .claude/skills/forge in your project. Claude Code loads it when a task matches its description.

How do I install Forge in Codex?

Run `npx skills add cwinvestments/memstack --skill forge -a codex`. Or copy the skill folder (skills/forge in cwinvestments/memstack) into .agents/skills/forge in your project. Codex loads it when a task matches its description.

Can I use Forge 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 cwinvestments/memstack --skill forge -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/forge, .gemini/skills/forge, .github/skills/forge and .opencode/skills/forge in your project.

What does Forge need to run?

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

Does Forge 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 Forge 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 Forge use?

Forge is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Forge use?

About 505 tokens (SKILL.md is roughly 2k 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 Forge?

Skills that share tags, products or a category with Forge: Forge (swyxio/skills, 175 stars), Forge (geekjourneyx/agora, 167 stars), Openclaw Persona Forge (affaan-m/ECC, 276k stars) and Openclaw Persona Forge (affaan-m/ECC, 276k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Forge?

cwinvestments (a GitHub user) maintains it in cwinvestments/memstack, which has 423 GitHub stars. The repository holds 87 skills in this directory. The repository was last updated on September 26, 2026.

Source: cwinvestments/memstack on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.