#5e

Dungeons & Dragons 5th-edition encounter-building maths as an API, computed locally and deterministically — the XP-budget and difficulty numbers a Dungeon Master balances a fight with. The budget endpoint sums the per-character XP thresholds from the DMG across the party — by party size and level, or a list of mixed levels — to give the easy, medium, hard and deadly budget for one encounter (a party of four 5th-level characters has thresholds of 1,000 / 2,000 / 3,000 / 4,400 XP), plus the total adventuring-day budget. The difficulty endpoint rates an encounter: it sums the monsters' XP, multiplies by the encounter multiplier for the number of monsters (×1.5 for two, ×2 for three to six, up to ×4 for fifteen or more), and compares the adjusted XP to the party thresholds — four 450-XP monsters against that party come to 3,600 adjusted XP, a hard fight. The carry endpoint gives the carrying capacity (Strength × 15, scaled by size), push/drag/lift and the encumbrance thresholds. Everything is computed locally and deterministically, so it is instant and private. Ideal for tabletop, virtual-tabletop, DM-tool and TTRPG app developers, encounter-builder and balance tools, and game-master education. Pure local computation — no key, no third-party service, instant. Uses the DMG tables. Live, nothing stored. 3 compute endpoints. For monster stats and spells use a D&D SRD data API.

api.oanor.com/dndencounter-api

完整的龙与地下城第五版系统参考文档作为API——法术、怪物、职业、子职业、种族、背景、装备、魔法物品、状态、特性、专长、技能以及完整的规则参考。按名称查找法术（例如火球术→3级塑能系，150英尺，8d6火焰伤害）或怪物属性（例如成年红龙→挑战等级17，AC 19，256生命值，传奇动作），列出并筛选任何资源类型（按等级或学派筛选法术，按挑战等级筛选怪物），或获取24个SRD类别中任何一个的完整详细信息。由开放的dnd5eapi.co数据集支持。非常适合角色构建器、虚拟桌面、遭遇和法术卡生成器、Discord机器人和自制工具。

api.oanor.com/dnd-api