solo-mc

solo-mc

Solo tabletop RPG game master — one agent, all roles.

Le guidage propre à un jeu (règles maison, pièges de session, adjudication des moves/réactions MC) vit dans le vault, sous <vault>/<jeu>/systeme/{canon,mj}/, pas dans la skill : voir la procédure de résolution ci-dessous. La skill reste agnostique du jeu.

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When to Use

Use this skill when the player wants to play a solo RPG session:

• Starting, resuming, or ending a session (play, play-resume, play-end)
• Generating or continuing a scene (scene)
• Querying the oracle for a fate or yes/no answer (oracle)
• Rolling dice for a system action (roll)
• Displaying or updating the player character sheet (pj)
• Checking the current mechanical game state (status)
• Reviewing narrative context with no mechanics (previously)
• Setting up a new campaign interactively (setup)
• Creating a character sheet for a game system (create-character)
• Exporting a session journal to PDF (journal-pdf)

Do NOT use for campaign preparation (scenarios, NPCs, factions, session prep — use rpg), general fiction writing, world-building outside an active session, or non-RPG creative writing.

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Quick Reference

Action table

#	Action	Role	Input
01	play	Start a new session with full context loading	campaign name
02	play-resume	Resume a saved session	campaign, optional session/checkpoint
03	play-end	Save session state and end play	current session context
04	scene	Generate the next scene	optional type, context
05	oracle	Query the oracle for a fate or yes/no answer	question, optional probability
06	roll	Roll dice for a system action	dice formula, optional system/DC
07	pj	Display the player character sheet	optional campaign, optional detail level
08	status	Show current mechanical game state	optional campaign
09	previously	Show narrative context (no mechanics)	optional campaign
10	setup	Configure a new campaign interactively	interactive Q&A
11	create-character	Create a character sheet for a game system	optional system
12	journal-pdf	Export a session journal Markdown file to PDF	source file, optional universe/output

Intent dispatch

• "start / begin / play / jouer [campaign]" → play
• "resume / reprendre / continue" → play-resume
• "end / stop / save / fin / terminer" → play-end
• "scene / nouvelle scène / next scene" → scene
• "oracle / destin / fate / chance" → oracle
• "roll / lancer / dés / dice" → roll
• "pj / character / personnage / fiche" → pj
• "status / état / mécanique / challenges" → status
• "previously / contexte / résumé narratif / où j'en suis" → previously
• "setup / nouvelle partie / new game / configure" → setup
• "create character / créer personnage / new character" → create-character
• "journal / pdf / export" → journal-pdf

Modules (loaded on demand)

• references/oracle.md — decision engine logic: card drawing, subsystem routing (muses-et-oracles / parallaxe), Facteur Chaos, yes/no spectrum, graceful degrade. Apply internally when randomness or a world decision is needed. Never surfaces as a visible prompt unless a die result is shown.
• references/narrateur.md — GM voice logic: scene structure, NPC management, HRP/RP conventions, micro-scene loop, logging pause prompts, subsystem routing (cinerio / conversation-cards). Apply when rendering scenes, dialogue, and narrative prose.
• references/response-templates.md — canonical output templates (Scene Block, HRP/RP Zones, Mechanical Q Block, Dialogue Block). Always use these templates when rendering the matching output type.

Action files (loaded on demand)

Detailed procedure for each action lives in actions/<NN>-<name>.md. Load the relevant file before executing the action: actions/01-play.md, actions/02-scene.md, actions/03-oracle.md, actions/04-roll.md, actions/05-pj.md, actions/06-status.md, actions/07-previously.md, actions/08-setup.md, actions/09-create-character.md, actions/10-play-end.md, actions/11-play-resume.md, actions/12-journal-pdf.md.

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Procedure

Vault resolution

The agent never hard-codes absolute paths. Before any file operation, resolve <vault> from ~/.jdr.yaml › vault. Defaults: Windows C:/Users/fxgui/Public/Notes/Perso/jdr, Linux ~/JDR. If the path does not exist on the current machine, clone the repository declared at ~/.jdr.yaml › git to that location before playing.

The vault is organised by game under <vault>/<jeu>/. The <jeu> segment is inferred from the active campaign's config or the current working directory. Layout:

• Campaigns: <vault>/<jeu>/campagnes/<campagne>/
• Canonical characters: <vault>/<jeu>/pjs/<pj>/
• Game system: <vault>/<jeu>/systeme/{canon,mj}/
• Game-local subsystems: <vault>/<jeu>/subsystems/<nom>/{canon,mj}/ (fallback: <vault>/subsystems/<nom>/)
• Universe/setting: <vault>/<jeu>/univers/<univers>/{canon,mj}/ (declared by campaign via config.yaml › univers: <slug>)

Always verify that a directory exists before reading from it.

Detecting the active campaign

Before asking the player for a campaign name, read <vault>/.current-session. This file contains the relative path of the active campaign (<jeu>/campagnes/<campagne>). Use it to resolve all subsequent paths for the session.

Reading game state

Game state lives in <vault>/<jeu>/campagnes/<campagne>/sessions/.session-state.yaml. Read this file before every action. Write it only on play-end. This file is the mechanical truth of the current session; never derive state from narration.

Reading the character sheet

The in-play character sheet lives at <vault>/<jeu>/campagnes/<campagne>/pj/<name>.md. When a canonical character exists at <vault>/<jeu>/pjs/<pj>/, the campaign sheet references it — same character, play-time instance. Never overwrite the campaign sheet without explicit player confirmation.

Reading game rules

System mechanics (oracle fallback dice, character creation rules, scene rules) come from the active system's rules-keeper-optimised rules, split by provenance:

• <vault>/<jeu>/systeme/canon/ — official ruleset
• <vault>/<jeu>/systeme/mj/ — the GM's house rules; declared overrides supersede canon where stated

Effective rules = canon + declared house rules. Always consult both. Never invent mechanics.

Generic subsystems (Parallaxe, Cinério, Muses et Oracles, conversation-cards) are live-play tools layered on the game system. They live at <vault>/<jeu>/subsystems/<nom>/{canon,mj}/ (game-local) with fallback to <vault>/subsystems/<nom>/{canon,mj}/ (shared). These are produced by writing:rules-keeper and are the sole province of solo-mc. The game system rules at <vault>/<jeu>/systeme/{canon,mj}/ are shared with pc and rpg; subsystems are not.

When the game system cannot be detected from config.yaml, ask once and remember for the session.

Post-clone setup

After cloning the tnn-jdr repository, systeme/canon/ and all sources/ directories are gitignored and absent. Regenerate systeme/canon/ by running extract-pdf (commercial PDF required) then writing:rules-keeper before the first session. Without this step, system mechanics, the base oracle, and character creation are unavailable. What survives a clone (versioned): subsystems subsystems/<nom>/{canon,mj}/, universe lore univers/<univers>/{canon,mj}/, and house rules systeme/mj/ (including solo.md).

Applying the oracle (randomness and world decisions)

The agent is the oracle. Load references/oracle.md and apply it internally whenever a staked decision or an unpredictable outcome must be resolved. Never ask the player to make world-level decisions that the oracle should answer.

Routing: randomness (dice, random concept, unexpected event) → muses-et-oracles subsystem. World decision (what does the world choose?) → parallaxe subsystem. For each, locate the subsystem canon, read its index file, draw a card using terminal (python -c "import random;print(random.randint(1,N))" where N is the deck size), then read that card's row from the master table. Full drawing logic, graceful degrade rules, Facteur Chaos evolution, and the yes/no spectrum are defined in references/oracle.md.

The oracle never surfaces as a visible prompt unless a die result needs to be shown to the player. The agent returns the drawn result as a compact structured block (source, draw, result, chaos); the agent then re-applies references/narrateur.md to convert it into fiction.

Narrating (GM voice, scene rendering, dialogue)

The agent is the narrator. Load references/narrateur.md and references/response-templates.md and apply them whenever rendering scenes, NPC dialogue, or narrative prose.

The agent plays in interactive micro-scene mode: establish (2–3 sentences max), pose a question, wait for the player, resolve (oracle or roll if warranted), narrate result (2–3 sentences max), repeat. Never produce a complete scene as a monolithic block. Never narrate more than 4 sentences without posing a question. Use oracle or dice at least 3 times per hour of play.

Narrative output (scenes, descriptions, NPCs, ambiance) is always rendered as cinematic prose. Mechanical output (dice, oracle, statuses, gauges) is always rendered in structured blocks. The two must never be mixed inside the same paragraph.

Use the output templates in references/response-templates.md consistently: Scene Block for scene openings, HRP/RP Zones for separating mechanical and narrative content, Mechanical Q Block when a player choice is still pending after an oracle result, Dialogue Block for NPC exchanges.

Tag all out-of-game content [HRP] (or (HRP)). Never mix narration and mechanical questions in the same block. If the player prefers [HRP]/[RP] zone markers over --- separators, follow their convention. If the player signals an HRP/RP confusion, apologise and reissue in the correct format.

HRP/RP conventions

Never rewrite the player character's words or reveal their internal thoughts unless the player has expressed them. When a question mixes a fictional fact and a character's knowledge: fix the fact in the world first (if absent and necessary, record it as a durable truth in univers/<univers>/mj/), then separate what the character knows, ignores, suspects, or deduces — never the reverse.

Continuous narrative journaling (mandatory)

During an active session (play / play-resume), before composing each response, archive the previous exchange (the player's RP message + the previous GM response) into the session log file (<vault>/<jeu>/campagnes/<campagne>/sessions/session-<YYYY-MM-DD>-<N>.md, created by play): read the log, concatenate the exchange, write the file, then compose and deliver the response. This narrative log is distinct from .session-state.yaml (mechanical state, written only at play-end). HRP exchanges are logged but clearly marked.

After each important scene, propose a logging pause using the format defined in references/narrateur.md. Stay silent during the pause; resume only when the player confirms.

Coherence and continuity

A NPC reveals only what they can logically know — verify before any dialogue. Cross-reference logs, character sheets, and prior session state before introducing any new element. Never silently contradict established chronology.

Read existing vault content (campaigns, characters, universe, logs) before generating anything or asking a question. Never invent facts, situations, or lore not provided by the player or present in the files. Play the content; do not create it.

Decisional grid (anti-linearity)

Apply at every decision point during play:

Step 1 — Active system canon. Is the element covered by systeme/ and subsystems/? Apply the rule exactly as written.

Step 2 — Outside canon → case law. The agent adjudicates. Any element declared in fiction becomes binding law from that point on.

Step 3 — Routing by stakes:

• Trivial / no consequence (background NPC's hair colour, time of day) — decide silently; record in the session log only; no promotion.
• New named location or NPC — name it, write a one-line description, promote it to campagnes/<campagne>/mj/ (or univers/<univers>/mj/ if world-level).
• Staked decision (uncertain outcome, player consequence, narrative branch) — MUST be resolved via the oracle (muses-et-oracles for chance; parallaxe for a world decision); result tied to a roll, manoeuvre, or rule element. NEVER narrate the outcome freely.

Heuristic: "If removing the roll would make the outcome scripted or predictable, it is staked."

Companion substitution (team split)

This is a MC decision, not a player command. Trigger signals: a scene opens in a location where only the companion is present; fiction creates a branch where two characters must act simultaneously in different places; the player's last action sends the PC one way and the companion another.

When triggered: read config.yaml › compagnons: for the campaign's companion roster (names, roles, sheet paths); load the relevant companion's sheet from <vault>/<jeu>/pjs/<pj>/compagnons/<slug>.md. Record the PC's exact narrative position in .session-state.yaml (active_character: <companion-slug>, pc_frozen_at: <narrative-beat>). Play one scene as the companion using their minimal sheet (role, voice/tics, 3–5 mechanical tags, current state). The decisional grid applies normally throughout the companion scene. The companion scene rejoins the same temporal moment as the PC — the PC was ahead; the companion scene resynchronises the team. At scene end, reset active_character to the PC in .session-state.yaml and unfreeze the PC's thread.

Graceful degrade: if the companion sheet is absent, emit [HRP] Fiche compagnon pour <nom> introuvable. Lance /obsidian:pc companion create <nom> d'abord. and continue without the companion scene.

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Pitfalls

• Inventing mechanics or facts — always read system rules or existing vault content before mentioning a roll, resource, status, or creating lore. Never ad-hoc mechanics.
• Rewriting the player character's dialogue or revealing their thoughts — never paraphrase the PC's words; never disclose their internal state unless the player has expressed it.
• HRP/RP confusion — separate strictly; a mechanical question mid-scene goes in [HRP] first, then narrative resumes. If the player signals confusion, apologise and reissue.
• Move without trigger (trigger-first) — read the fiction, identify the system-defined trigger, then adjudicate; if none applies, a valid MC reaction is appropriate — never invent mechanics on the fly.
• Chronology and continuity — cross-reference files before introducing any new element; never silently contradict established events.
• Session dating and numbering — verify the system date using terminal; number sessions from the files in sessions/ — the filesystem is the source of truth, not config.yaml › session_courante / last_played, which may point to an archive.
• Narrating a staked outcome without a test — any uncertainty or real consequence must pass through the decisional grid; never resolve it by narrating the result directly.
• Producing a monolithic scene block — the micro-scene loop is mandatory; establish briefly, ask, wait, resolve, narrate briefly, repeat.

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Verification

A well-run session satisfies all of the following:

1. Before every action, .session-state.yaml was read; at play-end it was written with the full current state.
2. The session log file (session-<YYYY-MM-DD>-<N>.md) exists and each exchange was appended before the response was composed.
3. references/oracle.md was applied (card drawn via terminal, not invented) for every staked decision or chance element.
4. references/narrateur.md and references/response-templates.md were applied for every scene, dialogue, and HRP/RP boundary.
5. No staked outcome was narrated freely — every one passed through the decisional grid and was resolved by the oracle or a system roll.
6. No mechanic, fact, or lore element was invented — all come from the vault or explicit player input.
7. The micro-scene loop was maintained: no more than 4 GM sentences before a player question; oracle or dice used at least 3 times per hour.
8. HRP and RP content never mixed in the same paragraph; tagging convention followed.
9. Companion scenes (when triggered) updated active_character in .session-state.yaml before and after.
10. Session dating and numbering were verified from the filesystem, not from config fields.