session-management

session-management is a skill for Claude Code from protoLabsAI/mythx-mcp. It costs 34 tokens per session (1,718 once invoked), scanned A, original, MIT.

A focused mode for preparing and managing tabletop role-playing game sessions before or between play.

In plain words
What is it for?
Use it to create sessions, attach world packs, assign players to characters, set starting time, manage turns, and prepare AI player context.
Why use it?
It helps organise the table, players, characters, turn order, and in-game time before play becomes difficult to coordinate.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: names the AskUserQuestion tool.

Part of the rpg plugin — 7 skills, 5 agents, 4 hooks shipped together

Good fit Use it to create sessions, attach world packs, assign players to characters, set starting time, manage turns, and prepare AI player context.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/protolabsai/mythx-mcp/session-management
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.

Any agent
npx skills add protoLabsAI/mythx-mcp --skill session-management
Clone the repo
git clone --depth 1 https://github.com/protoLabsAI/mythx-mcp

Made for: Claude Code.

Or install rpg, the plugin that ships this one along with the rest of its 7 skills, 5 agents, 4 hooks.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for session-management

README.md
[![agentmods](https://agentmods.dev/badge/skills/protolabsai/mythx-mcp/session-management/github.svg)](https://agentmods.dev/skills/protolabsai/mythx-mcp/session-management)
Your own site
<a href="https://agentmods.dev/skills/protolabsai/mythx-mcp/session-management"><img src="https://agentmods.dev/badge/skills/protolabsai/mythx-mcp/session-management/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for session-management

Your own site · 80×15
<a href="https://agentmods.dev/skills/protolabsai/mythx-mcp/session-management"><img src="https://agentmods.dev/badge/skills/protolabsai/mythx-mcp/session-management.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,718 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00034 $0.01718
Opus 5 $0.00017 $0.00859
Sonnet 5 $0.00007 $0.00344
Haiku 4.5 $0.00003 $0.00172

Measured 9d ago against content hash 880bce9c9994, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

session-management 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 9d 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.

world-builder/skills/session-management/SKILL.md · 278 lines

How it starts

The opening of the file, as written. The whole thing — 278 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Session Management Mode — Setup and Coordination

You are a session coordinator. Your mandate is to create, configure, and manage game sessions — including players, turn order, and in-game time. Use this mode before starting play or between sessions to get everything in order.


Session Manager Mindset

Get the Table Ready First

  • Create and configure sessions before anyone rolls dice
  • Assign every player to a character before starting turns
  • Set starting time before play begins — time consistency matters

AI Players Are First-Class

  • AI players need personas, goals, and context to act well
  • Use get_ai_player_context before submitting AI actions
  • Set clear personas so AI players feel distinct

Turn Order Is Sacred

  • Start turns once, advance consistently
  • Human players must submit before advancing
  • End turns cleanly before switching to free-form play

Workflow: Creating a New Session

Step 1: Create Session

mcp__rpg__create_session({
  name: "<session name>",
  worldPackId: "<pack id>",   // optional — attach a world pack
  description: "<brief premise>"
})

Step 2: Set Starting Time

mcp__rpg__set_time({
  sessionId: "<id>",
  time: { day: 1, hour: 8, minute: 0 }
})

Step 3: Add Players

For each human player:

mcp__rpg__create_player({
  sessionId: "<id>",
  name: "<player name>",
  type: "human"
})

For each AI player:

mcp__rpg__create_player({
  sessionId: "<id>",
  name: "<character name>",
  type: "ai",
  persona: "<description of personality, goals, and voice>"
})

Step 4: Assign Characters

Link each player to their character:

mcp__rpg__assign_character({
  sessionId: "<id>",
  playerId: "<player id>",
  characterId: "<character id>"
})

Step 5: Add Session Notes

Record the premise and starting situation:

mcp__rpg__add_note({
  sessionId: "<id>",
  content: "<session premise and starting situation>",
  tags: ["setup", "plot"]
})

Workflow: Loading an Existing Session

Read the full file on GitHub · 278 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. 9d ago First seen · 278 lines · 34 tokens per session scan A 880bce9c9994

Subscribe to this mod's changes

session-management is a skill published in the GitHub repository protoLabsAI/mythx-mcp (2 stars, last pushed 20d ago), licensed MIT. It adds 34 tokens to every session and 1,718 once invoked, about $0.0002 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 2026-08-31.

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