session-creation

A preparation workflow for a new tabletop role-playing game session, including a session folder, planning file, and scene files in an Obsidian vault.

In plain words
What is it for?
Use it to prepare sessions, plan scenes, build encounters, and write the results into an Obsidian vault using the Lazy DM, 5 Room Dungeon, and Situations methods.
Why use it?
It organizes research, ideas, encounters, and scenes into a consistent structure before the game begins.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/mm-weber/loremaester/session-creation
Any agent
npx skills add mm-weber/loremaester --skill session-creation
Clone the repo
git clone --depth 1 https://github.com/mm-weber/loremaester

Made for: Claude Code, Codex.

Per session 68 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,151 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00068 $0.02151
Opus 5 $0.00034 $0.01076
Sonnet 5 $0.00014 $0.00430
Haiku 4.5 $0.00007 $0.00215

Measured 2d ago against content hash 308fcdda9481, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

session-creation scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

examples/ttrpg/skills/session-creation/SKILL.md · 169 lines

How it starts

The opening of the file, as written. The whole thing — 169 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Session Creation Assistant

Orchestrate new session preparation by combining three RPG prep methodologies:

  • 8 Steps of the Lazy DM — the skeleton (mandatory template)
  • 5 Room Dungeon — scene architecture (offered as option)
  • Situations Checklist — scene content (always applied)

REQUIRED SKILLS: /worldbuilding for vault navigation and sourcebook research, brainstorming (superpowers) for collaborative refinement.

Workflow

digraph session_creation {
    "Phase 1:\nResearch & Context" [shape=box];
    "Phase 2:\nBrainstorm 8 Steps" [shape=box];
    "Offer 5RD?" [shape=diamond];
    "Phase 3a:\nBuild Scenes\n(5RD + Situations)" [shape=box];
    "Phase 3b:\nBuild Scenes\n(Situations only)" [shape=box];
    "Phase 4:\nWrite to Vault" [shape=box];
    "Phase 5:\nReview with GM" [shape=doublecircle];

    "Phase 1:\nResearch & Context" -> "Phase 2:\nBrainstorm 8 Steps";
    "Phase 2:\nBrainstorm 8 Steps" -> "Offer 5RD?";
    "Offer 5RD?" -> "Phase 3a:\nBuild Scenes\n(5RD + Situations)" [label="GM accepts"];
    "Offer 5RD?" -> "Phase 3b:\nBuild Scenes\n(Situations only)" [label="GM declines"];
    "Phase 3a:\nBuild Scenes\n(5RD + Situations)" -> "Phase 4:\nWrite to Vault";
    "Phase 3b:\nBuild Scenes\n(Situations only)" -> "Phase 4:\nWrite to Vault";
    "Phase 4:\nWrite to Vault" -> "Phase 5:\nReview with GM";
}

Phase 1: Research & Context

Use /worldbuilding Step 1 + Step 2 to gather context before brainstorming.

  1. Determine next session number: List Sessions/Session * folders, find highest N, use N+1. Always increment, never fill gaps.
  2. Read recent sessions: Last 1-2 session main files, focusing on ## Log and ## Open Threads for outstanding plot threads.
  3. Read PlayerNotes: PC/PlayerNotes/ — source of truth for what actually happened to the PCs from the players' perspective. Names may be phonetic or misspelled; cross-reference against canonical vault notes.
  4. Check in-game date (if the vault tracks one): some vaults use a calendar plugin and store events at .obsidian/plugins/<calendar-plugin>/data.json. If present, search for the next in-game date and any upcoming events.
  5. Map vault connections: vault_graph(), vault_backlinks(), vault_search_notes() on active NPCs, locations, factions from recent sessions.
  6. Research sourcebooks: search_lore() and get_chapter() for published material relevant to upcoming content.
  7. Summarize findings for the GM: open threads, active NPCs, current date/location, relevant sourcebook material.

Read the full file on GitHub · 169 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 169 lines · 68 tokens per session scan A 308fcdda9481

Subscribe to this mod's changes

session-creation is a skill published in the GitHub repository mm-weber/loremaester (19 stars, last pushed 1mo ago), licensed MIT. It adds 68 tokens to every session and 2,151 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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