io.github.AnonymousOnyx22/stem-calc-student-mcp
NPM · STEM-CALC-STUDENT-MCP
STEM calculator MCP for homework: molar mass, balancing, units, significant figures. Works offline.
Available components
Last scanned (3 hours ago)
Scores higher than 50% of npm servers
Category Health and Science
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →
Supply Chain Security98
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- No install/post-install scripts declared.Pass
- 30 of 92 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency45
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 4 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability78
- AI-judged instruction clarity (excellent).Pass
- Tool/resource definitions use about 386 tokens (~77/item across 5 items; 5 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management30
- Stability observed for 9 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 5 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 5 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 27 to 30. That category is still filling its 30-day observation window: 8 days of observed history at the previous scan, 9 at this one. The score rises as the window fills, whether or not the server changes.
- 3 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.
- 2 Nov 26 0
- Security disclosure: unverified → fail ▼ functional
- 1 Nov 26 +1
- Schema quality: 70 → 77 ▼ functional
- Security disclosure: fail → unverified ▼ functional
- Package version: 0.1.2 → 0.1.3 functional
- 31 Oct 26 +15
- Malware scan: unverified → pass ▲ security
- 30 Oct 26 +1
- Malware scan: unverified → pass ▲ security
- Package version: 0.1.1 → 0.1.2 functional
- 29 Oct 26 −14
- Malware scan: pass → unverified ▼ security
- Stability: unverified → 0.07 ▲ functional
- Schema quality: good → excellent functional
- Package version: 0.1.0 → 0.1.1 functional
- 28 Oct 26 +15
- Malware scan: unverified → pass ▲ security
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Analysed npm/stem-calc-student-mcp@0.1.3
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | npm |
Background: How many MCP packages publish verified provenance →
Dependencies 92 packages
| Packages resolved | 92 |
|---|---|
| Stale | 30 |
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
balance_equation Balance equation ~37
Balance a chemical equation written with -> and +.
| Name | Type | Req | Description |
|---|---|---|---|
| equation | string | yes | Equation like H2 + O2 -> H2O |
| Name | Type | Req | Description |
|---|---|---|---|
| balanced | string | yes | – |
No examples provided.
convert_units Convert units ~117
Convert a value between units of length, mass, time, volume, energy, temperature, pressure, speed or flow rate. Common spellings like ml, degC, °C and L/min are accepted. It refuses to convert one kind of unit into another.
| Name | Type | Req | Description |
|---|---|---|---|
| from | string | yes | The unit it is in, like km, kg, mL, J, C, atm, km/h or L/min. |
| to | string | yes | The unit to convert it to. |
| value | number | yes | The number to convert. |
| Name | Type | Req | Description |
|---|---|---|---|
| result | number | yes | – |
No examples provided.
molar_mass Molar mass ~81
Parse a chemical formula and return the molar mass in g/mol with the mass each element adds. Handles brackets and hydrates like CuSO4.5H2O.
| Name | Type | Req | Description |
|---|---|---|---|
| formula | string | yes | Chemical formula like H2O, Ca(OH)2 or CuSO4.5H2O. Write each element with a capital first letter. |
| Name | Type | Req | Description |
|---|---|---|---|
| breakdown | array | yes | – |
| mass | number | yes | – |
No examples provided.
round_sig_figs Round sig figs ~47
Round a number to a given number of significant figures.
| Name | Type | Req | Description |
|---|---|---|---|
| sigFigs | integer | yes | How many significant figures to keep. |
| value | number | yes | The number to round. |
| Name | Type | Req | Description |
|---|---|---|---|
| result | number | yes | – |
No examples provided.
stoichiometry Stoichiometry ~104
Convert between grams, moles and particles. The formula is required whenever grams are the from or to unit. Converting between moles and particles needs no formula.
| Name | Type | Req | Description |
|---|---|---|---|
| formula | string | – | The chemical formula, like H2O. Required when from or to is grams. Not used otherwise. |
| from | string | yes | What the value is in. |
| to | string | yes | What to convert it to. |
| value | number | yes | The amount to convert. |
| Name | Type | Req | Description |
|---|---|---|---|
| result | number | yes | – |
No examples provided.
How do I install the io.github.AnonymousOnyx22/stem-calc-student-mcp server?
io.github.AnonymousOnyx22/stem-calc-student-mcp runs locally as an npm package, launched with npx -y stem-calc-student-mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
npm · stem-calc-student-mcp
claude mcp add anonymousonyx22-stem-calc-student-mcp -- npx -y stem-calc-student-mcp
What is the io.github.AnonymousOnyx22/stem-calc-student-mcp server?
io.github.AnonymousOnyx22/stem-calc-student-mcp is listed in the public MCP registry as io.github.AnonymousOnyx22/stem-calc-student-mcp. STEM calculator MCP for homework: molar mass, balancing, units, significant figures. Works offline. This page covers its npm package (stem-calc-student-mcp).
Is the io.github.AnonymousOnyx22/stem-calc-student-mcp server safe to use?
io.github.AnonymousOnyx22/stem-calc-student-mcp scores 75 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 November 2026. It declares no install or post-install scripts. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the io.github.AnonymousOnyx22/stem-calc-student-mcp server expose?
io.github.AnonymousOnyx22/stem-calc-student-mcp exposes 5 tools: molar_mass, balance_equation, stoichiometry, convert_units, round_sig_figs. Their descriptions and schemas cost roughly 386 tokens of context every time the server is loaded.
Is the io.github.AnonymousOnyx22/stem-calc-student-mcp server still maintained?
io.github.AnonymousOnyx22/stem-calc-student-mcp is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.
What licence is the io.github.AnonymousOnyx22/stem-calc-student-mcp server under?
io.github.AnonymousOnyx22/stem-calc-student-mcp declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.