MatrixCalculator.net
REMOTE · MCP.MATRIXCALCULATOR.NET
Exact matrix calculations with step-by-step results for six core matrix operations.
Available components
Last scanned (8 hours ago)
Scores higher than 58% of remote servers
Reachable. Last reached 17 Oct 2026.
Category Developer Tools
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security63
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement. View diagnostics → Unverified
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability80
- AI-judged instruction clarity (excellent).Pass
- Tool/resource definitions use about 632 tokens (~105/item across 6 items; 6 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management7
- Stability observed for 2 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
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 6 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 7 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (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.
- 17 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.
- 16 Oct 26 +8
- Authorization: unverified → partial ▲ security
- The server rewrote its instructions, which are the text every model session reads security
- Tool “matrix_add” rewrote its description, which is the text the model reads security
- Tool “matrix_determinant” rewrote its description, which is the text the model reads security
- Tool “matrix_inverse” rewrote its description, which is the text the model reads security
- Tool “matrix_multiply” rewrote its description, which is the text the model reads security
- Tool “matrix_subtract” rewrote its description, which is the text the model reads security
- Tool “matrix_transpose” rewrote its description, which is the text the model reads security
- Schema quality: 67 → 105 ▼ functional
- Stability: unverified → 0.03 ▲ functional
- 15 Oct 26 60
First indexed and scored.
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 17 Oct 2026 · Probed https://mcp.matrixcalculator.net/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=matrixcalculator.net | CN=WE1,O=Google Trust Services,C=US | 15 Oct 2026 | 13 Jan 2027 | ECDSA 256 | ECDSA-SHA256 | 88f72c2a8a8dac021315c42a291d2bfa |
| SANs: matrixcalculator.net, mcp.matrixcalculator.net, *.mcp.matrixcalculator.net | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of mcp.matrixcalculator.net. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| net. | present | 37331 | 13 | Verified |
| matrixcalculator.net. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://mcp.matrixcalculator.net/mcp | Verified | 200 | |
| http (plaintext) | http://mcp.matrixcalculator.net/mcp | Inconclusive | 405 |
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 →
matrix_add ~81
Add two matrices of the same dimensions entry by entry. Useful for exact matrix addition or explaining each entry step by step. Accepts integers, decimals, and fraction strings (for example 1/2); returns the exact sum matrix and a calculation for each position.
| Name | Type | Req | Description |
|---|---|---|---|
| matrixA | array | yes | First matrix. |
| matrixB | array | yes | Second matrix. |
No output schema declared.
No examples provided.
matrix_determinant ~67
Find the exact determinant of a square matrix using fraction-preserving elimination. Use for determinant questions requiring row swaps, elimination steps, pivot multipliers, sign changes, diagonal products, or singularity checks. Returns the determinant and detailed operation steps.
| Name | Type | Req | Description |
|---|---|---|---|
| matrix | array | yes | Square matrix. |
No output schema declared.
No examples provided.
matrix_inverse ~80
Find an exact inverse of a square matrix with step-by-step Gauss-Jordan elimination. Use for inverse questions needing exact fractions, augmented matrices, row swaps, normalization, elimination, and verification that A times A-inverse is identity. Returns the inverse and verification, or null with singular=true if not invertible.
| Name | Type | Req | Description |
|---|---|---|---|
| matrix | array | yes | Square matrix. |
No output schema declared.
No examples provided.
matrix_multiply ~85
Multiply A by B when A's column count equals B's row count, including non-square matrices. Useful for exact matrix multiplication and step-by-step row-by-column dot products. Returns exact results plus each factor pair, product, and entry calculation; accepts fractions and decimals.
| Name | Type | Req | Description |
|---|---|---|---|
| matrixA | array | yes | Left matrix A. |
| matrixB | array | yes | Right matrix B. |
No output schema declared.
No examples provided.
matrix_subtract ~80
Subtract matrix B from matrix A when both have the same dimensions. Useful for exact matrix subtraction, including negative values and step-by-step entry calculations. Accepts integers, decimals, and fraction strings; returns each exact difference and its calculation.
| Name | Type | Req | Description |
|---|---|---|---|
| matrixA | array | yes | Matrix to subtract from. |
| matrixB | array | yes | Matrix to subtract. |
No output schema declared.
No examples provided.
matrix_transpose ~66
Transpose a rectangular or square matrix by exchanging rows and columns. Useful for requests to show where each result entry originated. Preserves exact integer, decimal, and fraction inputs and returns the transposed matrix with source-to-result position mappings.
| Name | Type | Req | Description |
|---|---|---|---|
| matrix | array | yes | Matrix to transpose. |
No output schema declared.
No examples provided.
How do I install the MatrixCalculator.net MCP server?
MatrixCalculator.net is a hosted endpoint at https://mcp.matrixcalculator.net/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · mcp.matrixcalculator.net
claude mcp add --transport http gamestarry-matrixcalculator-mcp 'https://mcp.matrixcalculator.net/mcp'
What is the MatrixCalculator.net MCP server?
MatrixCalculator.net is an MCP server listed in the public MCP registry as io.github.gamestarry/matrixcalculator-mcp. Exact matrix calculations with step-by-step results for six core matrix operations. This page covers its hosted endpoint (https://mcp.matrixcalculator.net/mcp).
Is the MatrixCalculator.net MCP server safe to use?
MatrixCalculator.net scores 69 out of 100 on VerifyMCP. 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 MatrixCalculator.net MCP server expose?
MatrixCalculator.net exposes 6 tools: matrix_add, matrix_subtract, matrix_multiply, matrix_determinant, matrix_inverse, matrix_transpose. Their descriptions and schemas cost roughly 459 tokens of context every time the server is loaded.
Does the MatrixCalculator.net MCP server require authentication?
No. We connected to MatrixCalculator.net without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the MatrixCalculator.net MCP server still maintained?
MatrixCalculator.net is still listed as active in the MCP registry. We last reached this channel on 17 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.