A Mythic Game Master Emulator 2nd Edition implementation for solo/GM-less RPGs, exposed as an MCP server.

Multi-tenant: Supply a game_id to namespace your game's state. Each game has its own Chaos Factor, Characters list, and Threads list.

Tool	Description
check_scene	Roll d10 vs Chaos Factor: Normal (as planned), Altered (with a twist), or Interrupted (different scene). Auto-rolls Event Focus on Interrupt.
event_focus	Roll on the Event Focus table. Auto-rolls Characters/Threads list when the focus involves NPCs or plot threads.
roll_fate	Ask the oracle a yes/no question. Returns Yes/No (possibly Exceptional) based on odds and Chaos Factor. Auto-rolls Event Focus on Random Event (doubles).
get_chaos	Get current Chaos Factor (1-9).
set_chaos	Set Chaos Factor to a specific value.
adjust_chaos	Increment or decrement Chaos Factor by 1.
characters	Manage NPCs: add, remove, list, roll. Can add same name up to 3x for weighting.
threads	Manage plot threads: add, remove, list, roll. Can add same name up to 3x for weighting.

When a scene is Interrupted or a Fate roll triggers a Random Event, the Event Focus table determines what happens:

Roll	Focus	Auto-rolls
1-5	Remote Event	—
6-10	Ambiguous Event	—
11-20	New NPC	—
21-40	NPC Action	Characters list
41-45	NPC Negative	Characters list
46-50	NPC Positive	Characters list
51-55	Move Toward Thread	Threads list
56-65	Move Away From Thread	Threads list
66-70	Close Thread	Threads list
71-80	PC Negative	—
81-85	PC Positive	—
86-100	Current Context	—

All tools require a game_id parameter. Use any unique string to identify your game session (e.g., "my-dnd-campaign", "solo-ironsworn-2024").

1. Setup: Add characters and threads to your lists
2. Start Scene: Call check_scene to see if it plays out as expected
3. Ask Questions: Use roll_fate with appropriate odds when you need the oracle
4. End Scene: Call adjust_chaos based on whether the PCs were in control (down) or not (up)
5. Repeat!

Scene Interrupted with NPC Action:

⚡ **Scene Interrupted**
Roll: 5 vs Chaos 9

Completely different scene! Something else happens instead.

---

**🎲 Event Focus**
🎭 **NPC Action**
Roll: 32

An existing NPC does something significant.

🎯 Character: **Princess Aria** (slot 2)

POST https://dcm31-mcp-mythic.web.val.run

Configure your MCP client to connect to this endpoint.