ChatRPG

Roll dice using standard notation (e.g., "2d6+4", "4d6kh3"). Supports single rolls or batch rolling multiple expressions at once. Supports advantage/disadvantage for d20 rolls. Provide either "expression" for single roll or "batch" for multiple rolls.

Create a new D&D 5e character with stats, class, race, and equipment

Retrieve an existing D&D 5e character by ID

Update an existing D&D 5e character with new stats, HP, level, equipment, etc.

Permanently delete a D&D 5e character by ID or name. Supports batch deletion.

Process short or long rest for D&D 5e character. Short rest: spend hit dice to heal. Long rest: restore all HP, half hit dice (rounded up), and clear until_rest conditions. Supports batch for party rests.

Manage D&D 5e spell slots. Operations: view (display slots), expend (use slot), restore (regain slots), set (DM override). Supports warlock pact magic (short rest recovery). Full/half/third casters calculated by class and level. Batch support for party spell tracking.

Level up a character. Increases level, HP (roll/average/max/manual), proficiency bonus, and spell slots. Supports custom class hit dice and resource scaling. Multi-level jumps allowed (e.g., 1→5). Batch support for party level-ups. Optionally track new features and spells learned.

Measure distance between two positions using D&D 5e grid mechanics

Calculate area of effect for D&D 5e spells/abilities (sphere, cone, line, cube, cylinder)

Check line of sight between positions with obstacle/cover detection

Check cover between attacker and target, returning AC and Dex save bonuses

Place or manage interactive props on the battlefield (barrels, doors, chests, etc.)

Calculate movement paths, reachable squares, or adjacent squares with terrain support

Manage D&D 5e conditions on targets (add, remove, query, tick duration)

Create a D&D 5e combat encounter with participants, terrain, and initiative tracking

Roll D&D 5e checks including skill checks, ability checks, saving throws, attack rolls, and initiative

Execute a combat action in an encounter (attack, dash, disengage, dodge, etc.). Phase 1 supports attack and dash actions.

Advance to the next combatant's turn in an encounter. Handles round transitions when all combatants have acted, ticks condition durations (removing expired conditions), clears action economy for the previous combatant, and provides death save reminders for combatants at 0 HP. Returns ASCII-formatted turn info with initiative order preview.

Roll a death saving throw for a character at 0 HP. D&D 5e rules: 10+ success, 9- failure, nat 1 = 2 failures, nat 20 = revive at 1 HP. 3 successes = stable (unconscious but not dying), 3 failures = death. Supports modifiers from spells like Bless and roll modes (advantage/disadvantage). Returns ASCII-formatted death save result with visual tracker.

Add, remove, or clear terrain in a combat encounter. Supports obstacles, difficult terrain, water, and hazards. Use for dynamic battlefield changes from spells (Wall of Stone, Spike Growth), abilities, or environmental effects.

Render an ASCII map of the current combat state showing participant positions, obstacles, and terrain. Returns a text-based grid visualization.

Get the current state of a combat encounter. Supports verbosity levels: minimal (LLM context), summary (quick overview), standard (default DM view), detailed (full state dump).

End a combat encounter with outcome tracking and optional summary generation. Supports victory, defeat, fled, negotiated outcomes. Can preserve encounter log for review.

Composite tool for encounter management with state synchronization. Operations: create (with characterId linking), get (with verbosity), end (with participantUpdates), commit (sync to persistent characters), list (active encounters). Supports bridging encounter simulation state with persistent character records.

Manage D&D 5e concentration on spells. Operations: set (begin concentrating), get (query state), check (roll save after damage), break (end concentration). DC = max(10, damage/2). Supports advantage/disadvantage on saves.

Manage D&D 5e aura effects (Spirit Guardians, Aura of Protection, etc.). Operations: create (new aura), list (active auras), process (apply effects to targets in range), remove (end aura). Supports damage, healing, conditions, and saving throws.

Use a spell scroll in D&D 5e. If spell is on your class list and same/lower level: auto-success. If spell is higher level: Arcana check DC 10 + spell level. On failure: scroll is consumed with no effect. On success: spell is cast from scroll, scroll consumed.

Arcane Synthesis for improvised magic. Caster proposes a custom spell effect; Arcana check DC = 10 + (level × 2) + modifiers. Success creates temporary spell effect, failure may cause mishaps. Supports circumstance modifiers (ley lines, desperation, material components).

Manage location graph for party navigation. Operations: create (new location), get (retrieve location + connections), update (modify properties), delete (remove location), link (connect two locations), unlink (disconnect locations), list (all locations). Supports location types, lighting, hazards, tags, and connection types (door, passage, stairs, ladder, portal, hidden).

Move the party between connected locations. Operations: move (travel to connected location), status (show current location and exits), history (show travel history). Validates connections, handles locked/hidden passages, one-way paths, and tracks travel history.

Manage character inventory. Operations: give (add items), take (remove items), equip (equip to slot), unequip (remove from slot), move (change container), list (show inventory), transfer (move between characters).

Manage party composition. Operations: add (add character to party with optional role), remove (remove character from party), list (show party roster), get (get party member details), set_role (assign role to party member), clear (remove all members). Roles: leader, scout, healer, tank, support, damage, utility, other.

Manage session notes. Operations: add (add note with content/tags/importance), search (search by query/tagFilter), get (get by noteId), delete (remove by noteId), list (list recent with limit).

Get comprehensive session context snapshot. Includes location, party, notes, combat state, and summary. Options: include (array of sections), format (detailed|compact|brief), maxNotes (limit), includeTimestamps (boolean).