Name: Glazemath
Author: CloudCorpRecords

Glazemath MCP

Ceramic glaze chemistry: unity formulas, limit checks, substitutes, recipes, shelf and firing logs.

Grade A Local · stdio No auth needed 33 tools v0.1.0 MIT

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What it does

Ceramic glaze chemistry: unity formulas, limit checks, substitutes, recipes, shelf and firing logs.

Quickstart

# 1 — add it to Claude Code
claude mcp add --scope user glazemath-mcp '--' npx -y @reneturcios/glazemath mcp

# 2 — ask your agent for something these tools do
#   search_materials, get_material, analyze_recipe and 30 more

Glazemath costs nothing on mcprush: there is no plan to choose here, no cap to set and nothing mcprush can bill you for.

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Tool surface

What the model actually sees. Descriptions are diffed on every release — see version history.

Only tools that write or reach the network

Read from its source code. A server that builds its tool list when it starts can list more tools than this.

Finds ceramic raw materials (feldspars, clays, frits, fluxes) and, if asked, colorants in Glazecalc's library by name, alias or maker. Use it to find the exact name the other tools take.

Parameter	Type	Required	Notes
query	string	yes	Words in the name, such as "custer", "ferro 3134" or "kaolin".
includeColorants	boolean	no	Also search colorants and opacifiers.
category	string	no	Only this category: feldspar, clay, frit, flux, silica...
region	string	no	Where the potter buys materials, so suggestions are ones sold there: US, UK, EU or AU. Leave it out for any.
limit	integer	no	The maximum number of materials to return (1 to 50).

One material from Glazecalc's library: its oxides, loss on ignition, whether it is discontinued and what replaces it, where it is sold, hazards and the data sheet it comes from.

Parameter	Type	Required	Notes
name	string	yes	Its name or alias.

Works out a glaze recipe's unity (Seger) formula, oxide groups, silica to alumina ratio, fired analysis, loss on ignition and calculated thermal expansion, as the Glazecalc app does. stull says where the recipe sits on Stull's chart (1912, as the recipe page draws it): silica and alumina in moles,…

Parameter	Type	Required	Notes
lines	array	yes	The recipe's base materials (not colorants), at most 40 lines.
language	string	no	The language for any sentences in the answer, as a BCP 47 tag such as "en", "de" or "ja". Languages Glazecalc does not offer are answered in English.

Checks a glaze recipe for what is past a recommended limit for its firing (too much boron or alkali, too little alumina, too little or too much clay, rising expansion...) and says what the fired glaze will likely do, as the Glazecalc app does. A cone is checked in the band the recipe page gives it…

Parameter	Type	Required	Notes
lines	array	yes	The recipe's base materials (not colorants), at most 40 lines.
firing	object	no	The firing, as a cone or a temperature. Leave it out when it is not known. From cone 12 up (about 1320 °C) no published glaze limits reach, so the limits are not checked there; the cone check judges c
limitSet	string	no	The limits to check against: "glazecalc" or "hesselberth-roy" (Hesselberth & Roy, cone 6 and 10 only, no low-fire figures). Neither has figures from cone 12 up. Left out: the limit set saved in the ac
language	string	no	The language for any sentences in the answer, as a BCP 47 tag such as "en", "de" or "ja". Languages Glazecalc does not offer are answered in English.

Converts between a pyrometric cone and its temperature, and between °C and °F. Orton cones run 022 to 42: Glazecalc's figure, from 022 to 15, is Orton's older chart for large cones at 150 °C an hour, and Orton's current figures (self-supporting cones at 15, 60 and 150 °C an hour, large cones at 60…

Parameter	Type	Required	Notes
cone	string	no	The pyrometric cone to convert to a temperature (cones run 022 to 42, e.g. "6"); give a cone, or a temperature instead.
chart	string	no	Which cone chart to use: "orton" (Orton) or "sk" (SK, JIS R 8101).
celsius	number	no	A temperature in degrees Celsius to convert (-50 to 2000); give a temperature, or a cone instead.
fahrenheit	number	no	A temperature in degrees Fahrenheit to convert (-60 to 3600); give a temperature, or a cone instead.

Finds the discontinued or scarce materials in a recipe and the modern ones that replace them, then suggests amounts that keep the unity formula as near as the materials allow, as the Glazecalc app does. report.closeness says how near the new unity formula comes to the old, oxide by oxide, as…

Parameter	Type	Required	Notes
lines	array	yes	The recipe's base materials (not colorants), at most 40 lines.
region	string	no	Where the potter buys materials, so suggestions are ones sold there: US, UK, EU or AU. Leave it out for any.
allowLead	boolean	no	Whether materials with lead may be suggested. Off by default.
allowMore	array	no	Materials whose suggested cap to lift, as report.capped names them: raw clay is held to 20% of the batch (or the recipe's own share) where that costs the match little.
language	string	no	The language for any sentences in the answer, as a BCP 47 tag such as "en", "de" or "ja". Languages Glazecalc does not offer are answered in English.

Remakes a glaze recipe from only the materials listed in "have", keeping its unity formula as near as they allow, as Match with what I have does in the Glazecalc app. report.closeness says how near the new unity formula comes to the old, oxide by oxide: close (within 0.02, or 5% of a large amount…

Parameter	Type	Required	Notes
lines	array	yes	The recipe's base materials (not colorants), at most 40 lines.
have	array	yes	The library names of the materials on hand.
mustUse	array	no	Materials on hand that must stay in.
allowMore	array	no	Materials whose suggested cap to lift, as report.capped names them: raw clay is held to 20% of the batch (or the recipe's own share) where that costs the match little.
language	string	no	The language for any sentences in the answer, as a BCP 47 tag such as "en", "de" or "ja". Languages Glazecalc does not offer are answered in English.

Makes a glaze recipe, in percent, from the materials given whose unity formula comes as near a target as they allow (Solve for a target in the Glazecalc app). The target is a unity formula (moles; the fluxes are scaled to add up to 1) or an oxide analysis (percent by weight of the fired glaze),…

Parameter	Type	Required	Notes
target	object	yes	The unity formula or oxide analysis to aim for.
materials	array	no	The library names of the materials to make it from. Use search_materials to find the names.
onHand	boolean	no	Make it from the materials on the person’s shelf, as well as any named: needs a token or connected app that may read it.
mustUse	array	no	Materials given that must be in the recipe.
allowMore	array	no	Materials whose suggested cap to lift, as report.capped names them: raw clay is held to 20% of the batch (or the recipe's own share) where that costs the match little.
firing	object	no	The firing, as a cone or a temperature. Leave it out when it is not known. From cone 12 up (about 1320 °C) no published glaze limits reach, so the limits are not checked there; the cone check judges c
language	string	no	The language for any sentences in the answer, as a BCP 47 tag such as "en", "de" or "ja". Languages Glazecalc does not offer are answered in English.

Works out the test tiles of a line blend between recipes a and b (2 to 11 steps), or of a triaxial blend when c is given too (2 to 6 rows, up to 21 tiles), as the Blends page of the Glazecalc app does. Each tile is a mix of the corner recipes, each taken as a percent of its base: its shares, its…

Parameter	Type	Required	Notes
a	array	yes	Recipe A, the first corner (the line's first tile, or the top of the triangle).
b	array	yes	Recipe B (the line's last tile, or the triangle's bottom left).
c	array	no	Recipe C, the triangle's bottom right. Leave it out for a line blend between a and b.
steps	integer	no	Tiles in the line (2 to 11, default 5), or rows of the triangle when c is given (2 to 6, default 4).
firing	object	no	The firing, as a cone or a temperature. Leave it out when it is not known. From cone 12 up (about 1320 °C) no published glaze limits reach, so the limits are not checked there; the cone check judges c
limitSet	string	no	The limits to check against, as check_limits takes it: "glazecalc" (the default) or "hesselberth-roy".
language	string	no	The language for any sentences in the answer, as a BCP 47 tag such as "en", "de" or "ja". Languages Glazecalc does not offer are answered in English.

Shows what one material does to a glaze, by putting more and more of it into a base recipe (an ingredient blend or progression test: whiting 0 to 20, say, in 2 to 11 tiles). With mode "add" (the default) it goes on top of the base, so the recipe grows; with mode "replace" the same amount comes out…

Parameter	Type	Required	Notes
recipe	array	yes	The base recipe the material goes into.
material	string	yes	The material to vary, by its library name (search_materials finds it), such as "Whiting".
from	number	no	The least of it, in the unit the recipe lines share (default 0: the base alone).
to	number	yes	The most of it, in the unit the recipe lines share: it must be more than from.
steps	integer	no	Tiles from from to to (2 to 11, default 5).
mode	string	no	"add" (the default): put the material on top of the base. "replace": take the same amount out of instead, so the total stays the same.
instead	string	no	With mode "replace": the material of the base that gives way to it.
firing	object	no	The firing, as a cone or a temperature. Leave it out when it is not known. From cone 12 up (about 1320 °C) no published glaze limits reach, so the limits are not checked there; the cone check judges c
limitSet	string	no	The limits to check against, as check_limits takes it: "glazecalc" (the default) or "hesselberth-roy".
language	string	no	The language for any sentences in the answer, as a BCP 47 tag such as "en", "de" or "ja". Languages Glazecalc does not offer are answered in English.

Compares two glaze recipes side by side: for each, its recipe in percent, key unity formula figures, silica to alumina, calculated expansion, place on Stull's chart (stull), the names of the limit cautions it has and, with a firing, whether its chemistry fits that firing (coneFit verdict); then…

Parameter	Type	Required	Notes
a	array	yes	Recipe A.
b	array	yes	Recipe B.
labels	array	no	Names for A and B, two of them, such as ["Original", "With whiting"], echoed back.
firing	object	no	The firing, as a cone or a temperature. Leave it out when it is not known. From cone 12 up (about 1320 °C) no published glaze limits reach, so the limits are not checked there; the cone check judges c
limitSet	string	no	The limits to check against, as check_limits takes it: "glazecalc" (the default) or "hesselberth-roy".
language	string	no	The language for any sentences in the answer, as a BCP 47 tag such as "en", "de" or "ja". Languages Glazecalc does not offer are answered in English.

Searches Glazecalc's plain-language guides for potters (glazing from first principles, making a glaze, safe mixing, safety at home with children and pets, firing a kiln, and a companion to John Britt's free glaze course, in English only) in the language asked for, or in English where that language…

Parameter	Type	Required	Notes
query	string	yes	Words to look for, such as "crawling", "respirator", "bisque schedule" or "specific gravity".
language	string	no	The language for any sentences in the answer, as a BCP 47 tag such as "en", "de" or "ja". Languages Glazecalc does not offer are answered in English.
guide	string	no	Only this guide.
cones	string	no	How the potter fires, for the parts of the guides that differ: Orton cones (the default), SK cones (JIS R 8101) or by temperature.
limit	integer	no	At most this many sections (5 unless asked).

Lists the glaze recipes saved in your Glazecalc account, newest first, optionally only those whose title or a material matches a search, or whose stated firing includes a cone or names an atmosphere or process ("which of my glazes fire at cone 10 reduction?"). Each lists its stated firing; a…

Parameter	Type	Required	Notes
search	string	no	Only list recipes whose title or a material matches this search text.
cone	string	no	Only recipes whose stated firing includes this cone ("6", "06", "5.5", SK "6a"), or for scale "temperature" this °C. A range matches any cone inside it; recipes tested at it come first. Recipes stated
scale	string	no	The scale the cone is in: Orton (the default), SK (JIS R 8101) or a temperature in °C.
atmosphere	string	no	Only recipes stated for this atmosphere.
process	string	no	Only recipes stated for this firing process.
limit	integer	no	How many to return, 25 by default.
offset	integer	no	How many to skip, for the next page.

One recipe from your account: its materials and amounts, colorants, notes, its stated firing (firedAt: the cone scale, the low and optional high cone of the claimed range, the cones actually tested, the atmospheres and processes, and for a temperature the rate and hold; each cone exactly as the…

Parameter	Type	Required	Notes
id	string	yes	The id from a list.
firing	object	no	The firing, as a cone or a temperature. Leave it out when it is not known. From cone 12 up (about 1320 °C) no published glaze limits reach, so the limits are not checked there; the cone check judges c
language	string	no	The language for any sentences in the answer, as a BCP 47 tag such as "en", "de" or "ja". Languages Glazecalc does not offer are answered in English.

Lists the materials you have saved in your own Glazecalc account (not the shared library), with their oxides.

Parameter	Type	Required	Notes
search	string	no	Only list your saved materials matching this search text.
limit	integer	no	How many to return, 25 by default.
offset	integer	no	How many to skip, for the next page.

The materials you marked as on hand in Glazecalc (the shelf that Match with what I have uses).

No parameter schema on file.

Remakes one of your recipes, or a recipe you give, from only the materials on your shelf, keeping its unity formula as near as they allow (Match with what I have). report.closeness says how near the new unity formula comes to the old, oxide by oxide, as match_from_materials does. Test any…

Parameter	Type	Required	Notes
recipeId	string	no	One of your recipes, from list_recipes.
lines	array	no	Or a recipe given line by line.
allowMore	array	no	Materials whose suggested cap to lift, as report.capped names them: raw clay is held to 20% of the batch (or the recipe's own share) where that costs the match little.
language	string	no	The language for any sentences in the answer, as a BCP 47 tag such as "en", "de" or "ja". Languages Glazecalc does not offer are answered in English.

Lists the firing logs saved in your Glazecalc account, newest first.

Parameter	Type	Required	Notes
search	string	no	Only list firing logs matching this search text.
limit	integer	no	How many to return, 25 by default.
offset	integer	no	How many to skip, for the next page.

One firing log from your account: its columns (time, temperature, cone...) and rows, and its notes.

Parameter	Type	Required	Notes
id	string	yes	The id from a list.

The notes in your Glazecalc notebook, newest first, optionally only those about one record (a recipe, material or firing log id).

Parameter	Type	Required	Notes
search	string	no	Only list notes about this one record (a recipe, material or firing log id).
about	string	no	Only the notes about this record id.
limit	integer	no	How many to return, 25 by default.
offset	integer	no	How many to skip, for the next page.

Your Glazecalc settings that matter when talking about glazes: region, temperature scale, cones, language, weight unit, whether lead may be suggested, the limit set recipes are checked against, the currency your prices are in (never the prices), and whether changes made by assistants wait for your…

No parameter schema on file.

Saves a new glaze recipe in your Glazecalc account, from its base materials and amounts (the library's names, or your own materials'), with optional colorants, notes, firing band and food-surface mark. Glazecalc works out its unity formula, as the recipe page does, and answers with it. Save only a…

Parameter	Type	Required	Notes
title	string	yes	The recipe’s name.
lines	array	yes	The recipe's base materials (not colorants), at most 40 lines.
colorants	array	no	Colorants and opacifiers added to the base, as the recipe page lists them; left out of the unity formula.
notes	string	no	Notes kept with the recipe.
firing	string	no	The firing band its limits are checked in: low (cone 06-02), mid (cone 4-6), high (cone 9-11) or top (cone 12 up, where no limit set has figures, so none are checked), as the recipe page chooses it.
foodSurface	boolean	no	Whether it is meant for a food surface (a liner).
language	string	no	The language for any sentences in the answer, as a BCP 47 tag such as "en", "de" or "ja". Languages Glazecalc does not offer are answered in English.

Changes one of your saved recipes (an id from list_recipes): its title, its base materials and amounts (the unity formula is worked out again), its notes, firing band or food-surface mark. Only what is given changes. The recipe as it was is kept as an earlier version, so the person can undo the…

Parameter	Type	Required	Notes
id	string	yes	The recipe, from list_recipes.
title	string	no	The recipe's new title.
lines	array	no	All of its base materials, in place of the ones it has.
notes	string	no	Its notes, in place of the ones it has.
firing	string	no	The firing band its limits are checked in: low (cone 06-02), mid (cone 4-6), high (cone 9-11) or top (cone 12 up, where no limit set has figures, so none are checked), as the recipe page chooses it.
foodSurface	boolean	no	The recipe's food-surface mark: true if the glaze is for a food-contact surface.
language	string	no	The language for any sentences in the answer, as a BCP 47 tag such as "en", "de" or "ja". Languages Glazecalc does not offer are answered in English.

Adds an entry to your Glazecalc notebook (the Notebook page), with an optional title: a test result, an observation, a firing to try. With about, it is a note about one of your recipes, materials or firing logs, which list_notes finds by that record's id. Needs an access token that can read and…

Parameter	Type	Required	Notes
content	string	yes	The entry.
title	string	no	A title for the notebook entry.
about	object	no	The saved record the entry is about, when it is about one: list_notes with its id finds it again.

Saves a material of your own in your Glazecalc account (the Materials page) from its oxide analysis in weight percent, as on a data sheet, with its loss on ignition. Recipes can then use it by name. Needs an access token that can read and change your records.

Parameter	Type	Required	Notes
name	string	yes	The name of your material.
analysis	object	yes	Its oxides in weight percent, as on a data sheet: { "SiO2": 68.5, "Al2O3": 17.4, "K2O": 9.8 }.
loi	number	no	Its loss on ignition in percent.
notes	string	no	Notes about the material.
language	string	no	The language for any sentences in the answer, as a BCP 47 tag such as "en", "de" or "ja". Languages Glazecalc does not offer are answered in English.

Changes one of your own materials (an id from list_my_materials): its name, oxide analysis in weight percent, loss on ignition or notes. Only what is given changes. Recipes already saved keep their own copy of it. The material as it was is kept as an earlier version, so the person can undo the…

Parameter	Type	Required	Notes
id	string	yes	The material, from list_my_materials.
name	string	no	The material's new name.
analysis	object	no	Its oxides in weight percent, as on a data sheet: { "SiO2": 68.5, "Al2O3": 17.4, "K2O": 9.8 }.
loi	number	no	The material's loss on ignition, in percent (0 to 99.9).
notes	string	no	New notes about the material.
language	string	no	The language for any sentences in the answer, as a BCP 47 tag such as "en", "de" or "ja". Languages Glazecalc does not offer are answered in English.

Marks materials as on hand (the shelf that Match with what I have uses), by the library's names or your own materials'. The shelf as it was is kept: undo_shelf_change puts it back. Needs an access token that can read and change your records.

Parameter	Type	Required	Notes
materials	array	yes	The materials, by name.

Takes materials off the shelf of materials on hand, by name. The materials themselves stay. The shelf as it was is kept: undo_shelf_change puts it back. Needs an access token that can read and change your records.

Parameter	Type	Required	Notes
materials	array	yes	The materials, by name.

Puts back the shelf as it was before its last change (by the website, an access token or an assistant). One step back only: a second call finds nothing to undo until the shelf changes again. Needs an access token that can read and change your records.

No parameter schema on file.

Moves one of your recipes, materials, notebook entries or firing logs to the Trash, as removing it on the website does. It can be put back from the Trash on the website for 30 days; nothing is deleted for good. A token moves at most 100 an hour, and none while the Trash is full. Remove only what…

Parameter	Type	Required	Notes
kind	string	yes	What it is: a note is a notebook entry.
id	string	yes	Its id, from list_recipes, list_my_materials, list_notes or list_firings.

Saves a new firing log in your Glazecalc account (the Firing page): its title, the day, the kiln, the columns kept (time, temperature, cone, atmosphere, comments...) and a row for each reading, as the person dictated them. Add later readings with add_firing_rows. Save only what the person said and…

Parameter	Type	Required	Notes
title	string	yes	The log’s name, as the person gave it ("Glaze firing, cone 6").
date	string	no	The day it was fired, as 2026-10-21; today when left out.
kiln	string	no	The kiln, as the person names it.
columns	array	yes	The columns kept, by these names, as on the Firing page: Time, Temperature F or Temperature C (the scale said), Cone, Atmosphere, Ramp, Hold, Damper, Comments and the rest.
rows	array	yes	One row for each reading, one cell for each column, in column order, as the person said it ("9:40", "1850", "5 bending"); "" for a cell not said.
notes	string	no	Anything else said about the firing, in the person’s words.

Adds rows to the end of one of your firing logs (an id from list_firings), in the log's own columns (get_firing gives them): the readings dictated during a firing. The rows already there stay as they are, and the log as it was is kept as an earlier version. At most 500 rows a log. Save only what…

Parameter	Type	Required	Notes
id	string	yes	The firing log, from list_firings.
rows	array	yes	The new readings, in the log’s own columns (get_firing gives them), each row a cell for each column.

Links one of your recipes to a firing log it went through, as the recipe page does, and sets what came of it there: the result in the person's words (at most 500 characters), and the cone and atmosphere when they differ from the log. Linked already, it changes only what is given. A recipe links to…

Parameter	Type	Required	Notes
recipeId	string	yes	The recipe, from list_recipes.
firingId	string	yes	The firing log it went through, from list_firings.
result	string	no	What came of it in that firing, in the person’s words (at most 500 characters; put longer text in a notebook entry about the recipe).
cone	string	no	The cone it was fired to there, as the recipe page writes it ("6", "06", "5.5", SK "6a", or "1240" for °C), when it differs from what the log says.
atmosphere	string	no	oxidation, reduction or neutral, when the person says it.

Free

$0 forever

Every tool, no call limit
No card, and mcprush charges nothing for it
Source published under MIT
Runs on your machine — nothing of it reaches our gateway
Nothing to cap, because mcprush bills nothing

Nothing here is billable: mcprush charges nothing to install Glazemath or to call it, at any volume.

ATrust score 99 / 100

Release 0.1.0 · scanned 5 Nov 2026

Two independent axes, because powerful and malicious are different questions. The grade is threat only. The capability level is blast radius, and it is never a penalty on the grade — it is priced as one subtract-only term in the score, where you can see it.

Threat score100

Client score99

Findings0 threat · 0 capability

Capabilityminimal

Coveragesource

Verificationrepo

Surface digest9f3587d6cea01392d9958a4559bf1f3ff045401f81f9ab12641c43b7682b6bc4

Score vectorthreat 100 → client 99

Term	Level	What it prices	Points
capability-exposure	minimal	capability blast radius (minimal) — client exposure if the model is manipulated	−0
verification-discount	repo	publisher verification (public source) — no provenance, but the source is public and inspectable	−1
coverage-honesty	source	inspection depth (source) — how much of the target the scan could see	−0

score = clamp(round(threatScore − E_cap − E_ver − E_cov), 0, 100). No model, no opinion, no network call at scoring time: the same methodology version against the same bytes always produces this number, and every line above is a field of the report rather than a summary of it.

What the scan could actually read

A grade is only as meaningful as its coverage, so the scanner publishes its own depth before it publishes its result.

Tool surfacenot available

Implementation sourceread

Package metadataread

Live transportnot available

No tools were enumerated, so prompt-injection, capability and toxic-flow analysis had no tool surface to inspect. To grade a package’s real runtime tools, scan the running server: --command "npx -y <package>".

Capability — what it could do if the model were manipulated

Tags derived from each tool’s schema and the implementation, not from what the tool calls itself. minimal is the level these add up to.

Tool	Capability tags	Why the tag was assigned
No per-tool rows for this release — see the note below.

No tool surface was enumerated, so there is nothing to attribute a capability to.

Toxic-flow graph

The lethal trifecta, checked as a graph rather than as a checklist: untrusted input, a sensitive source and an external sink have to meet before there is a path worth worrying about.

The public result for this release does not print the flow graph, so there is nothing to show here. That is not the same as "no paths were found": what the scan did read is above, under coverage.

Supply chain and provenance

Integrityfirst-seen

Surface digest9f3587d6cea01392

Scanned2026-11-05

This is the first scan of this surface here, so there is nothing yet to compare it against.

Every result on this tab comes from one deterministic pass over the published package — offline, rule by rule, and auditable line by line above. Same methodology version, same bytes, same score.

Where are you running it?

Tool surface

Release history

Glazemath MCP

What it does

Quickstart

Where are you running it?

Tool surface

What counts against your monthly calls

What the scan could actually read

Capability — what it could do if the model were manipulated

Toxic-flow graph

Supply chain and provenance

Release history

See also