Agent skill

Worldbuilding

by inkeep in inkeep/open-knowledge

How to work in a Worldbuilding project (the worldbuilding starter pack): a fiction encyclopedia of characters, settings, themes, factions, and lore.

GPL-3.0Auto-check passedWriting & Content

Install Worldbuilding

skills CLI
$ npx skills add inkeep/open-knowledge --skill worldbuilding -a claude-code

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

GitHub CLI
$ gh skill install inkeep/open-knowledge worldbuilding --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/inkeep/open-knowledge.git skills-src && mkdir -p .claude/skills && cp -r skills-src/packages/server/assets/skills/packs/worldbuilding .claude/skills/worldbuilding && 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
worldbuilding
GitHub stars
4.4k
Token cost
~742 tokens
SKILL.md length
283 words
Files
2
Skills in repo
18
Repo updated
First seen
Licence
GPL-3.0

At a glance

How to work in a Worldbuilding project (the worldbuilding starter pack): a fiction encyclopedia of characters, settings, themes, factions, and lore.

  • Tasks that involve Creative writing and fiction
  • SKILL.md covers Folders, Agent behaviors (the core value) and Templates
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Worldbuilding is an agent skill from inkeep/open-knowledge. How to work in a Worldbuilding project (the worldbuilding starter pack): a fiction encyclopedia of characters, settings, themes, factions, and lore. Read when the project has these folders, OR when asked to add a character, setting, faction, or piece of lore, or to check the world for internal consistency. Carries the auto-stub and consistency behaviors so that guidance does not live inside template bodies or folder descriptions. Complements the platform open-knowledge skill; does not replace it.

Its SKILL.md is about 740 tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file (for example `plugin.json`). Compatibility notes: Any agent host with the OpenKnowledge MCP server configured. Installed project-local by ok seed --pack worldbuilding.

It sits in Writing & Content, covering Creative writing and fiction. The repository describes itself as: Beautiful, AI-native markdown IDE and LLM wiki. The licence is GPL-3.0.

When your agent uses it

  • Tasks that involve Creative writing and fiction

Example prompts

  • “/worldbuilding”

Requirements

  • Compatibility (from SKILL.md): Any agent host with the OpenKnowledge MCP server configured. Installed project-local by `ok seed --pack worldbuilding`.

What it can do on your machine

Read from SKILL.md and the folder at commit cf9b84c. 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.

  • Compatibility

    Any agent host with the OpenKnowledge MCP server configured. Installed project-local by `ok seed --pack worldbuilding`.

    From compatibility in the SKILL.md frontmatter.

Context cost

Worldbuilding loads about 742 tokens when it runs. Until then it costs about 130 tokens; SKILL.md has 283 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~130
When it runs · the whole SKILL.md, loaded when a task matches
~742

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 inkeep/open-knowledge at commit cf9b84c, republished under its GPL-3.0 licence (© inkeep). 283 words, ~742 tokens.

Download SKILL.mdSave it as .claude/skills/worldbuilding/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
worldbuilding
description
How to work in a Worldbuilding project (the `worldbuilding` starter pack): a fiction encyclopedia of characters, settings, themes, factions, and lore. Read when the project has these folders, OR when asked to add a character, setting, faction, or piece of lore, or to check the world for internal consistency. Carries the auto-stub and consistency behaviors so that guidance does not live inside template bodies or folder descriptions. Complements the platform `open-knowledge` skill; does not replace it.
compatibility
Any agent host with the OpenKnowledge MCP server configured. Installed project-local by `ok seed --pack worldbuilding`.
metadata.pack
worldbuilding
metadata.author
Inkeep
metadata.repository
https://github.com/inkeep/open-knowledge-skills

Worldbuilding pack — how to work here

This project is a fiction encyclopedia. The graph is the product: characters, settings, themes, factions, and lore that link to each other. The agent's main jobs are auto-stubbing new entities as they're mentioned and flagging contradictions. This skill holds those behaviors so templates and folder descriptions stay clean.

This skill is pack guidance. The platform /open-knowledge skill (read/write/preview/linking/grounding rules) still governs every markdown operation — this layers the worldbuilding conventions on top.

Folders

  • characters/ — one file per character (PC + NPC); frontmatter carries type, status, faction, first appearance.
  • settings/ — locations, regions, world-rules; frontmatter carries region, controlling faction, danger level. The "where" of the story.
  • themes/ — recurring narrative concerns (love, betrayal, identity). The "why." Themes work via opposition; each entry captures the theme and its tension.
  • factions/ — political, social, criminal, magical, religious groups. Ships faction, political-faction, and religion templates.
  • lore/ — history, mythology, cosmology, magic systems. Ships lore, magic-system, and historical-event templates.

Agent behaviors (the core value)

  • Auto-stub on mention. When a chapter, session log, or existing entry references a name not yet captured, stub a file in the right folder with backlinks to where it was mentioned.
  • Flag contradictions. When a character's faction (or any field) contradicts their actions in narrative, or a setting is described two ways, surface the conflict — in fiction a contradiction is itself a story-shaping detail worth noting, not silently "fixing."
  • Thread the graph. Link characters ↔ factions ↔ settings ↔ lore so each entry becomes a hub for everywhere it appears.
  • Do NOT add TTRPG stat-block fields (xp_awarded, etc.) — those belong in a future TTRPG variant.

Templates

Create with write({ document: { path, template: "<name>" } }). Templates carry only structure; section meaning is described here, not inside the document body.

© inkeep, GPL-3.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 1 other file in packages/server/assets/skills/packs/worldbuilding of inkeep/open-knowledge.

  • SKILL.md
  • plugin.json

Open the folder on GitHubat commit cf9b84c

Compare with similar skills

Worldbuilding 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.

Worldbuilding compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Worldbuilding this skillinkeep/open-knowledge4.4k—~742Automated safety check: PassGPL-3.0
Story Multi-Perspective Reviewzenstory-ai/oh-story-claudecode7.3k3 repos~3kAutomated safety check: PassMIT
Short Web Fiction Trend Scanzenstory-ai/oh-story-claudecode7.3k3 repos~1.2kAutomated safety check: PassMIT
InkOS Creative HarnessNarcooo/inkos10k1 repos~1.1kAutomated safety check: PassAGPL-3.0
Novel Arteternityspring/shuohao-skills4.2k—~1.1kAutomated safety check: NotesApache-2.0
Novel Import and Project Rebuildzenstory-ai/oh-story-claudecode7.3k2 repos~1.7kAutomated safety check: PassMIT

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More from inkeep/open-knowledge

All 18 skills in this repo
  • Open Knowledge Write Skill

    inkeep/open-knowledge

    A skill your agent uses when the user wants to create, author, write, or design a new Agent Skill (a SKILL.md) — for OpenKnowledge or for their editors — including requests like 'help me write a…

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  • Open Knowledge Discovery

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    Read when the user asks what OpenKnowledge is, wants to install it on a repository, wants to open or preview a single markdown file that is not part of an OpenKnowledge project, wants to share an…

    4.4k GitHub stars~2k tokensUpdated today
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  • Write A Postmortem

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    Write a blameless incident postmortem under postmortems/ following the Google SRE shape — evidence-based timeline, trigger vs root cause vs symptom, contributing factors, what went well, and…

    4.4k GitHub stars~4.4k tokensUpdated today
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  • Codebase Wiki

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    How to work in a Codebase Wiki project (the codebase-wiki starter pack): an agent-authored, source-grounded wiki of the surrounding codebase.

    4.4k GitHub stars~1.8k tokensUpdated today
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  • Open Knowledge

    inkeep/open-knowledge

    Authoritative agent-runtime contract for working inside an OpenKnowledge project — a markdown-CRDT knowledge base exposed over MCP.

    4.4k GitHub stars~4.7k tokensUpdated today
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  • Consolidate Notes

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    Promote existing research into a stable-status canonical article under articles/ in a Knowledge Base project (the knowledge-base starter pack).

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Questions about Worldbuilding

What does Worldbuilding do?

How to work in a Worldbuilding project (the worldbuilding starter pack): a fiction encyclopedia of characters, settings, themes, factions, and lore. Worldbuilding is an agent skill from inkeep/open-knowledge. How to work in a Worldbuilding project (the worldbuilding starter pack): a fiction encyclopedia of characters, settings, themes, factions, and lore.

When should I use Worldbuilding?

Worldbuilding fits situations like: tasks that involve Creative writing and fiction.

How do I install Worldbuilding in Claude Code?

Run `npx skills add inkeep/open-knowledge --skill worldbuilding -a claude-code`. Or copy the skill folder (packages/server/assets/skills/packs/worldbuilding in inkeep/open-knowledge) into .claude/skills/worldbuilding in your project. Claude Code loads it when a task matches its description.

How do I install Worldbuilding in Codex?

Run `npx skills add inkeep/open-knowledge --skill worldbuilding -a codex`. Or copy the skill folder (packages/server/assets/skills/packs/worldbuilding in inkeep/open-knowledge) into .agents/skills/worldbuilding in your project. Codex loads it when a task matches its description.

Can I use Worldbuilding 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 inkeep/open-knowledge --skill worldbuilding -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/worldbuilding, .gemini/skills/worldbuilding, .github/skills/worldbuilding and .opencode/skills/worldbuilding in your project.

What does Worldbuilding need to run?

SKILL.md names no scripts, command-line tools or credentials: Worldbuilding is instructions for the agent only. Compatibility (from SKILL.md): Any agent host with the OpenKnowledge MCP server configured. Installed project-local by `ok seed --pack worldbuilding`..

Does Worldbuilding 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 Worldbuilding 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 Worldbuilding use?

Worldbuilding is published under the GPL-3.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Worldbuilding use?

About 742 tokens (SKILL.md is roughly 3k 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 Worldbuilding?

Skills that share tags, products or a category with Worldbuilding: Story Multi-Perspective Review (zenstory-ai/oh-story-claudecode, 7.3k stars), Short Web Fiction Trend Scan (zenstory-ai/oh-story-claudecode, 7.3k stars), InkOS Creative Harness (Narcooo/inkos, 10k stars) and Novel Art (eternityspring/shuohao-skills, 4.2k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Worldbuilding?

inkeep (a GitHub organization) maintains it in inkeep/open-knowledge, which has 4,407 GitHub stars. The repository holds 18 skills in this directory. The repository was last updated on October 7, 2026.

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