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feat(2024): Add 2024 Monsters - #1226

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G-Ambatte wants to merge 11 commits into
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G-Ambatte:add2024Monsters

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@G-Ambatte

@G-Ambatte G-Ambatte commented Sep 13, 2026

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What does this do?

Adds the 2024 Monster data

How was it tested?

It's not (yet).

Is there a Github issue this is resolving?

NA

Did you update the docs in the API? Please link an associated PR if applicable.

No

Here's a fun image for your troubles

image

I created the Barovian Travel Planner, a tool to calculate the distances and travel times between various locations in Curse of Strahd's tiny country of Barovia. Many DMs choose to increase the map scale, but for my campaign, I've stuck to the classic quarter mile per hex.


Sept 13, 2026

Currently this PR includes monster data from this gist, as the text extraction that I have used previously did not handle the monsters well.
The PR currently includes the function that I have created to reshape the gist data to the API format.

Known Issues

Gist data does not include the fields skills, gear, or proficiency_bonus. Proficiency Bonus can be calculated in a future update, but Skills and Gear will need to acquired from another source.

@G-Ambatte G-Ambatte changed the title Add2024Monsters feat(2024): Add 2024 Monsters Sep 13, 2026
bagelbits added a commit that referenced this pull request Sep 22, 2026
## What does this do?

Stacked on #1226. Base branch `add2024Monsters-base` is copy of that PR
head. Retarget to `main` after #1226 merge.

Script output now match `MonsterSchema`. New test check it. CI now run
on PRs to any base branch, so stacked PRs get lint + tests.

- Normalize PDF text: ability scores on one line, wrapped header lines
joined, merged lines split. Write `monster-text-data.normalized.txt`.
- Pair text block to monster by ability scores + CR, not array position.
Old way swap skills/PB for 7 monsters (giant-crab, giant-crocodile,
winter-wolf, worg, allosaurus, ankylosaurus, ape).
- Reshape: numeric CR, `xp`, `xp_in_lair`, `armor_class` array,
condition references, senses parsing, hit dice minus sign.
- Parse `damage` (all types, one entry each) and `dc` (saving throw,
escape, ability check) from descriptions for traits, actions, bonus
actions, reactions, legendary actions.
- Build `spellcasting`. List entries (48): spell lists come from stat
block text, gist stop at intro line; match list to entry by ability +
save DC + to-hit since PDF put some blocks inside previous block text.
Single-spell casts (Invisibility, Fear, Coven Magic, Divine Aid, and
similar): link spell, inherit ability/DC from main Spellcasting when
text say "same spellcasting ability", per-day usage from action name.
Every spell resolve against `5e-SRD-Spells.json`; script throw on
unknown spell or unused list. `(level N version)` set spell level, other
parentheticals become capitalized `notes`.
- Clean PDF debris from entries: drop spell list lines gist parsed as
entries, strip next block title from last entry, split merged entries,
complete descriptions cut at page breaks from stat block text (only when
gist text is exact prefix of text paragraph). 1460 entries down to 1330.
- Schema: add optional `damage` to `ReactionSchema`. Add optional
`spellcasting` to reactions and legendary actions. Add optional
`skills`, `gear`, `bonus_actions` to `MonsterSchema`. Omit
`skills`/`gear` when source say None.
- Split script into modules: `monsterText.mjs` (normalize, parse blocks,
pair to monsters), `monsterEntries.mjs` (damage, dc, debris cleanup),
`monsterSpellcasting.mjs`, `monsterCommon.mjs`. Output byte-identical
before and after split.
- Structure all 178 `Multiattack` entries: `multiattack_type`,
`actions`, `action_options`. Same Choice shape as 2014 and existing 2024
monsters. Attack `type` from the monster's own action
(melee/ranged/special), or the spell's `attack_type` for casts.
Description text unchanged.
- New convention for "any combination": inside a Choice, an action
option `count` is the most times that option can be picked. "Three
attacks, Claw or Tail in any combination" = `choose: 3`, Claw `count:
3`, Tail `count: 3`. Replacements join the choice (count = attacks
replaced). No existing data use `count` > 1 inside `choose` > 1, so this
is new. Please check it fits API consumers.
- Split form monsters like 2014: werebear, wereboar, wererat, weretiger,
werewolf into human/hybrid/animal, vampire into vampire/bat/mist. 329
monsters become 341. Same index, name and image as 2014, linked by
`forms`. Entries tagged "Form Only" go only to their forms (tag
removed), untagged go to every form. Multiattack options pruned to
actions the form has. Size from Shape-Shift. Speed from text `Speed`
line (gist had animal-form value, e.g. werewolf 40 ft. for every form)
or from Shape-Shift for vampire bat and mist. Human and vampire form
keep base size "Medium or Small".
- Merge fake entries gist made from tail of `Failure:`/`Success:` lines
(lycanthrope curse, steam mephit Steam Breath).
- `armor_class`: no `type` (2024 SRD has no text after AC value, per
review comment). `type` now optional in schema. Armor and shields named
in `Gear` link to 2024 equipment through `armor_class.armor` (28
monsters). Half Plate Armor matches Half-Plate Armor.
- Independent audit (subagent) found and confirmed 4 issues, now fixed:
- `size`/`type` split wrong for 47 monsters ("Medium or Small Humanoid"
-> size "Medium", type "or small humanoid"). Split repaired from the
gist's own two fields; form-split monsters (finding #1) still get a
single size per form.
- `languages` truncated mid-sentence for 13 monsters in the gist
(dretch, kraken, and 11 others); now read from the stat block text
instead.
- Tarrasque's "World-Shaking Movement" legendary action had ~150
characters of the next stat block's ability scores, gear, senses and CR
line bled in, because that block's title ("Toughs") has no AC line of
its own so went undetected. Fixed generally: the truncation-repair pass
now always stops at the ability-score table header, and a title followed
straight by that header (no AC/HP/Speed) is now recognized too.
- `usage` (finding #2, 0 -> 150 entries): parsed out of recharge/per-day
name suffixes. "Legendary Resistance (3/Day, or 4/Day in Lair)" -> name
"Legendary Resistance", `usage: {type: "per day", times: 3,
times_in_lair: 4}`, matching the 3 reference monsters exactly. Covers
per day, per day in lair (special abilities only), recharge on roll
(dice always "1d6"), recharge after a rest. Non-usage suffixes ("level N
version", "Requires Magic Rope", mimic's form tag) left alone; a
trailing non-usage note (night hag "Requires Soul Bag") kept in the
name. Added `rest_types` to `ActionUsageSchema` and `usage` to
`Reaction`/`LegendaryAction` schemas, since the data has
recharge/per-day on reactions and bonus actions too, not just special
abilities and actions.
- `skills`/`proficiencies` (finding #5): decided in favor of matching
2014. Skills now encoded as `proficiencies` entries (`skill-history`,
`skill-perception`, and so on, looked up from
`5e-SRD-Proficiencies.json`), alongside saving throws, same as every
2014 monster. `skills` string field dropped from output and schema.
- `attack_bonus`: 440 attacks had none set, though schema support it and
reference aboleth's Tentacle has one. Gist's own `attack_bonus` was a
leftover spell-attack modifier on 5 dragons' Spellcasting action
(already correct in `spellcasting.modifier`), never a weapon attack
bonus; dropped, and parsed properly from "Attack Roll: +N" in the
description, same as damage and dc. Found while comparing generated
output against the reference monsters ahead of a final cleanup PR.
- Second independent audit pass (subagent), scoped to the finalized PR
(#1231): found and fixed 1 new critical issue plus 3 related
truncations.
- **`damage_immunities`/`condition_immunities`**: the gist's own
"Immunities" extraction lands a conditions-only line (no damage type, so
no semicolon in the source) whole in `damage_immunities`, leaving
`condition_immunities` empty. Confirmed for 23 monsters (gray-ooze,
ettin, cloaker, and 20 others). Fixed by reading
`Resistances`/`Vulnerabilities`/`Immunities` from the stat block text,
classifying an unsemicoloned Immunities line word-by-word against the
known damage types and conditions.
- `damage_resistances` truncated (trailing empty string) for 4 undead
(ghost, specter, will-o-wisp, wraith); rakshasa/half-dragon's
single-phrase vulnerability/resistance also truncated. Same fix.
- Condition parenthetical notes (archmage's "Charmed (with Mind Blank)")
were being discarded; now captured in `APIReferenceSchema`'s existing
optional `note` field.
- Regenerate `5e-SRD-Monsters-New.json`.

## How was it tested?

New `src/2024/tests/monsterGeneration.test.ts`. Run script into temp
dir, no overwrite of real files. Check: count + unique index, schema,
hit dice format, passive perception, sense format, XP, PB vs CR, skill
bonus = mod + PB or 2 x PB, every save DC and damage roll in description
present in output, every spell cast has valid spell URL, no spell list
entries or unterminated descriptions. Every Multiattack must be
structured and simple counts must round trip. Forms split, linked and
pruned; werewolf human/wolf entries and speeds checked. Armor links
checked against equipment. Full suite 113 pass (7 new tests total for
both audit passes).

## Known gaps

- `spell save DC` not put in `dc`. It live in `spellcasting.dc`.
- Dryad Multiattack read as one choice of Vine Lash, Thorn Burst or
Charm Monster. Text say "and it can use Spellcasting" so could mean
attack plus cast.
- Clay golem Multiattack condition ("if it used Hasten this turn") only
in Choice `desc`, not structured.
- `components_required` computed from text: "no Material components"
give `["V","S"]`.
- Reference adult-blue-dragon (`5e-SRD-Monsters.json`) has extra
`acid-arrow` and `modifier: 5`. Book text has neither. Output follow
book text.
- Charmed (with Mind Blank) on archmage become plain `charmed`.
- Escape DC and first-named ability of check DC map to one ability. Book
allow choice.
- shambling-mound and giant-frog Stealth match book, not mod + PB.
Listed as quirks in test.
- Mist form gets every untagged entry (Charm, legendary actions, traits)
since tags followed strictly. Book say mist form can't take actions.
- Mimic `Adhesive (Object Form Only)` keeps tag. Not split in 2014.
- Some words keep gist compound artifacts like `5-footwide`.
- Merged-entry split also cover `(... Form Only)` headings (wererat Hand
Crossbow).

## Is there a Github issue this is resolving?

NA

## Did you update the docs in the API? Please link an associated PR if
applicable.

No

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: G.Ambatte <sean@robertson-family.nz>
Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>
bagelbits added a commit that referenced this pull request Sep 22, 2026
## What does this do?

Stacked on #1228, which is stacked on #1226. Retarget to `main` after
#1226 and #1228 both merge.

This is the final step: land the generated data and remove everything
that generated it.

- Replace `5e-SRD-Monsters.json` (previously 3 hand-authored monsters)
with the full 341-monster generated output from #1228, including the
second audit pass's damage/condition immunities fix.
- Delete the generator script (`processMonsterData.mjs` and its
`monster*.mjs` modules), its raw inputs (`monsters.json`,
`monster-text-data.txt`), its normalized-text output, and its own test
(`monsterGeneration.test.ts`). None of these are needed once the data
they produce is committed.
- Remove `tables.test.ts`'s bypass for the raw gist file, now that the
file it skipped no longer exists.

## How was it tested?

Full existing 2024 test suite (schema validation, duplicate indices,
broken API references, translations) run against the final file with no
bypass: 92 tests pass.

## Is there a Github issue this is resolving?

NA

## Did you update the docs in the API? Please link an associated PR if
applicable.

No. A separate `5e-srd-api` PR is needed for the new/changed 2024
monster shape (armor_class.type now optional, skills folded into
proficiencies, new usage/spellcasting/damage/bonus_actions fields, and
so on); not filed yet.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: G.Ambatte <sean@robertson-family.nz>
Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>
@bagelbits

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Closing in favor of #1229

@bagelbits bagelbits closed this Sep 22, 2026
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