MGS Toolbox
https://michaelghelfistudios.com/api/v1/mcp ↗
Description
Fantasy TTRPG data: metals, minerals, ingredients, potions, gems, craft rules, music catalogue.
What our measurements say
MGS Toolbox is a remote MCP server published at michaelghelfistudios.com. It has been probed 8 times since 9/12/2026. It answered in 8 of them (100.0%), a near-uninterrupted record. Median response time is 592 ms, a delay an agent will notice. It offers a narrow, focused set of 12 tools. On the protocol side it still runs 2025-11-25 and has not moved to the newer spec.
Agent readability score
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
Agent readability score
Strengths
- Tool names are descriptive and indicate their primary function.
- Parameters are well-typed with clear required/optional distinctions.
Weaknesses
- Some descriptions (e.g., list_entries) lack explicit use-case context.
- No documentation of error handling or input validation constraints.
list_entries— filters parameter lacks schema definition for structure and allowed fields.list_facets— Description could clarify its relationship to list_entries and search_encyclopedia.
Verdict
Event narrative
Risk: low
- 2026-09-12T15:21:42.024Z — era: legacy, complianceScore: 100 · stable legacy operation with perfect compliance but missing smoke test data
Advice
Schema compliance
tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.
- tools/list schema valid
- inputSchema is valid JSON Schema
- Smoke test passed · last run:
- Cold-start: cold 201ms → warm 199ms (penalty 2ms)
Tools
Tools the server advertised in the latest measurement — measured, not catalog-claimed.
search_encyclopediaFind metals, minerals, alchemical ingredients, potions and gems by name (case- and accent-insensitive; exact names first, then prefixes, then substrings, aliases included). Returns each hit with its kind, id, one-line summary and page url; call get_entry for the full data.
qstringrequiredkindstringlangstringlimitinteger
get_entryThe full data of one metal, mineral, ingredient, potion or gem by its id (from search_encyclopedia or list_entries): properties, lore, page url, embed_url.
kindstringrequiredidstringrequiredlangstring
list_entriesA page of one catalogue, filtered. Use it to answer "which minerals are cubic and gem-quality?", "legendary metals of the medieval era", "swamp ingredients with a fire essence". Combine with q for a name search inside the filter.
kindstringrequiredfiltersobjectqstringlangstringlimitintegeroffsetinteger
random_entryOne entry at random among those matching the filters: loot tables, "mineral of the day", a credible metal for a blacksmith, a foraging roll.
kindstringrequiredfiltersobjectlangstring
list_facetsEvery distinct value of each filterable field of a catalogue (categories, rarities, crystal systems, environments, essences…) and its entry count.
kindstringrequired
craft_rulesThe rules of the crafting system (characters, essences, extraction, brewing, gem cutting, socketing) as titled HTML sections.
langstring
search_tracksPublished tracks of MGS Audio (music, ambiences, sound effects) with composer, album, moods, keywords, duration and page url. Metadata only: no audio file. "A battle theme" → genre: "Combat", type: "music"; "a forest ambience" → type: "ambience", genre: "Forest"; "something for a dungeon" → keyword: "dungeon".
typestringgenrestringmoodstringerastringkeywordstringcomposerstringalbumstringqstringduration_minnumberduration_maxnumbersortstringlimitintegeroffsetinteger
random_trackOne published track at random among those matching the filters.
typestringgenrestringmoodstringerastringkeywordstringcomposerstringalbumstringqstringduration_minnumberduration_maxnumber
get_trackOne track by id or slug, with its published alternative versions.
idstringrequired
list_composersEvery composer with published tracks, most prolific first, with their page url.
list_albumsPublished albums with track count, page url and an embeddable player url.
limitintegeroffsetinteger
audio_taxonomyThe vocabulary of the track filters: every genre, mood, era and keyword in use.
Availability history
Event log
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
- Added to watch — era: Legacy
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