2d6-mcp-rules-reference - SKILL.md Agent Skill

name: 2d6-mcp-rules-reference description: Rules lookup, table rolling, OGL and BYOD search strategies for the 2d6mcp MCP server.

2D6 Rules Reference

You have access to five pre-populated rules databases (OGL/Cepheus Engine SRD for sci-fi, Dungeon World CC-BY-3.0 for fantasy, Basic Roleplaying BRP OGL v1.0 for percentile, 5E-compatible SRD CC-BY-4.0 for d20 fantasy, and Orcus OGL v1.0a for 4e-compatible), plus your own BYOD files and AI ruling synthesis.

OGL Database Search

query_ogl_rules(search_term, category?)

Categories

Category	Contains
`rules`	Core rules, task resolution, hazards, encounters
`skills`	Skill descriptions and specialities
`careers`	Career tables, qualification, survival, advancement, ranks
`equipment`	Armour, weapons, augments, medical gear, computers, survival gear
`tables`	Named random tables
`combat`	Personal combat rules, damage, healing
`starships`	Starship operations, space combat, critical hits, boarding
`worlds`	World building, UWP creation, trade codes, starports
`categories`	List of all available categories
`list_tables`	List of all named tables

Examples

query_ogl_rules("laser rifle")                    → equipment match
query_ogl_rules("combat", category: "rules")      → combat rules only
query_ogl_rules("navy", category: "careers")      → navy career path
query_ogl_rules("Astrogation", category: "skills") → skill description

DW Database Search

query_dw_rules(search_term, category?)

Categories

Category	Contains
`moves`	Basic, special, and GM moves
`classes`	Character classes and compendium classes
`spells`	Wizard and cleric spells
`equipment`	Weapons, armor, gear, services
`monsters`	Monsters by type and environment
`gm_tools`	Agendas, principles, fronts, dangers, steading rules
`rules`	Core rules, tags, playbook rules

Examples

query_dw_rules("hack and slash")               → move description
query_dw_rules("wizard", category: "classes")   → wizard class
query_dw_rules("goblin", category: "monsters")  → goblin stat block
query_dw_rules("front", category: "gm_tools")   → front creation rules

BRP Database Search

query_brp_rules(search_term, category?)

Categories

Category	Contains
`characteristics`	STR, CON, SIZ, INT, POW, DEX, APP
`skills`	Skill descriptions and specializations
`professions`	Profession templates and skill packages
`weapons`	Melee and ranged weapons
`armor`	Armor types and protection values
`spot_rules`	Spot rules for combat, damage, healing
`foes`	Creatures and NPC foes

Examples

query_brp_rules("dodge", category: "skills")          → dodge skill
query_brp_rules("sword", category: "weapons")          → sword stats
query_brp_rules("armor", category: "armor")            → armor types
query_brp_rules("combat", category: "spot_rules")      → combat spot rules

5E-compatible Database Search

query_5ecompatible_rules(search_term, category?)

Categories

Category	Contains
`spells`	Spell descriptions by level
`monsters`	Monster stat blocks
`classes`	Class features and progression
`feats`	Feat descriptions and prerequisites
`rules`	Core rules and conditions

4E-Compatible (Orcus) Database Search

query_orcus_rules(search_term, category?)

Search the Orcus 4e-compatible rules database for classes, monsters, feats, and core rules.

Categories

Category	Contains
`classes`	Character classes, traditions, roles, key abilities, defenses
`monsters`	Monster stat blocks, level info, origin types, traits, actions
`feats`	Feat descriptions, prerequisites, category, benefits
`rules`	Core rules, skill checks, ability checks, extended challenges

Examples

query_orcus_rules("Commander", category: "classes")           → class features
query_orcus_rules("dragon", category: "monsters")              → monster stat block

Examples

query_5ecompatible_rules("fireball", category: "spells")     → spell description
query_5ecompatible_rules("goblin", category: "monsters")     → monster stat block
query_5ecompatible_rules("tough", category: "feats")         → feat description

Table Rolling

roll_table(table_name, dice_type?, system?)

Roll on a named table from any rules system. Use the system parameter to specify which database to search (ogl/dw/brp/5ecompatible/orcus, default: ogl). Available dice types: 1d6, 2d6, d66, 1d3, 2d3, d4, d8, d10, d12, d20, d100. Use query_ogl_rules("", category: "list_tables") to see all available OGL tables.

BYOD Search

query_local_byod(search_term)

Searches your personally ingested PDFs, text files, and markdown files. Requires BYOD consent and a configured BYOD_PATH. Files must be synced with sync_byod first. Multi-word queries try AND first, then OR for broad matching. Prefix searches with * (e.g., combat*). Max 20 results. Returns snippets — use get_byod_chunk for full content.

get_byod_chunk(file_path, chunk_index)

Retrieves the full chunk content for a specific file and chunk index. Use after query_local_byod returns snippets and you need the complete text for inference.

Search Strategy

Match the system: Use the appropriate tool — query_ogl_rules (sci-fi), query_dw_rules (fantasy), query_brp_rules (percentile), query_5ecompatible_rules (d20 fantasy), or query_orcus_rules (4e-compatible)
Be specific: Search for the exact mechanic name or equipment item
Try categories: If a broad search returns too much, narrow with a category
Fall back to BYOD: If core rules don't have what you need, try query_local_byod
Combine searches: For a complete picture, query both the system database and BYOD
Get full content: query_local_byod returns snippets. Use get_byod_chunk(file_path, chunk_index) to retrieve the full chunk for inference

Content Coverage

OGL (Cepheus Engine SRD)

Rules, skills, careers, equipment, combat, starship operations, world building, and random tables for 2d6 sci-fi RPGs.

DW (Dungeon World CC-BY-3.0)

Moves, classes, spells, equipment, monsters, and GM tools (agendas, principles, fronts, dangers) for 2d6 fantasy RPGs.

BRP (Basic Roleplaying BRP OGL v1.0)

Characteristics, skills, professions, weapons, armor, spot rules, and foes for percentile-based RPGs.

5E-compatible (5E-compatible SRD CC-BY-4.0)

Spells, monsters, classes, feats, and core rules for d20 fantasy RPGs.

4E-compatible (Orcus OGL v1.0a)

Classes, monsters, feats, and core rules for 4e-compatible RPGs. Includes character classes with traditions and roles, full monster stat blocks with AC/Fort/Ref/Will defenses, and feat-driven character progression.

Environment Variables

Variable	Default	Purpose
`OGL_DB_PATH`	`data/ogl/cepheus.db`	Custom OGL database path
`DW_DB_PATH`	`data/dw/dungeon-world.db`	Custom DW database path
`BRP_DB_PATH`	`data/brp/basic-roleplaying.db`	Custom BRP database path
`SR5E_DB_PATH`	`data/5ecompatible/5ecompatible-srd.db`	Custom 5E-compatible database path
`ORCUS_DB_PATH`	`data/orcus/orcus.db`	Custom Orcus database path