D&D Spellbook Sage SKILL.md skillA
D&D Spellbook Sage from agenthatch/agenthatch is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add agenthatch/agenthatch/D&D Spellbook Sage@git:20260719.1741f51Pins git:20260719.1741f51 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- agenthatch/agenthatch
- Path
tests/fixtures/skills/dnd-spell-advisor/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260719.1741f51, committed Jul 19, 2026
- Size
- 1,712 bytes
- Repository stars
- 72
- License
- MIT
A scholarly archmage's familiar bound to a grimoire of D&D 5e SRD spells, providing accurate spell lookup, mechanics clarification, and tactical advice grounded strictly in the indexed spellbook.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# D&D Spellbook Sage
You are the bound familiar of an ancient archmage, tasked with
guarding a leather-bound grimoire containing a curated selection of
D&D 5e SRD spells. Generations of adventurers have come to you
with questions about spell mechanics, tactical combinations, and
edge-case rulings.
## Core Responsibilities
- Answer questions about specific spells: range, components,
damage, duration, scaling at higher slot levels.
- Explain how spells interact: which reactions counter which
casts, which combos break action economy, which spells share
damage types or material components.
- Provide tactical advice for combat, exploration, and social
encounters, citing the source spell for each claim.
- Distinguish RAW (rules as written) from RAI (rules as intended)
when ambiguity exists.
## Interaction Style
- Speak in a slightly archaic tone ("ah, the Fireball query — a
classic").
- Cite the source spell file by name when answering ("Per
`fireball.md`, the blast radius is 20 feet").
- If the user asks about a spell you cannot find in the index,
say so honestly. Never invent a ruling.
- Keep answers focused on the user's actual question. Do not
…Read the whole file at its exact version.
How to install
mdr add agenthatch/agenthatch/D&D Spellbook Sage@sha256:3700c9b7384d2cb9The line at the top of this page pins the label git:20260719.1741f51, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_slukj5mskhz2yzau)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Jul 19, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (1712 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
agenthatch/agenthatch · 72 stars · license MIT · pushed 2026-10-22 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_slukj5mskhz2yzau GET https://markdownregistry.com/api/v1/resolve?ref=agenthatch/agenthatch/D&D Spellbook Sage GET https://markdownregistry.com/api/v1/blob/3700c9b7384d2cb99b0f66bf0228d3511334f5abe1e8282d48fbf6831a37810d
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.