Cruncher
NPM · @SLBDN/CRUNCHER-MCP · SCANNED AUG 3
Scientific calculator MCP server with 43 tools: arithmetic, trig, stats, unit conversion.
Available components
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 →
Supply Chain Security100
- 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
- No production dependencies, so there is no dependency health to assess. View diagnostics → Pass
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 33 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability66
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 1179 tokens (~34/item across 34 items; 34 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management23
- Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage68
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 4% of tool parameters carry a description.Partial
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Add this component to your MCP client. Where a client-specific snippet is available, pick your client below and copy it straight into your config; otherwise use the connection detail shown.
npm · @slbdn/cruncher-mcp
claude mcp add islobodan-cruncher-mcp -- npx -y @slbdn/cruncher-mcp
codex mcp add islobodan-cruncher-mcp -- npx -y @slbdn/cruncher-mcp
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"islobodan-cruncher-mcp": {
"type": "local",
"command": [
"npx",
"-y",
"@slbdn/cruncher-mcp"
],
"enabled": true
}
}
} openclaw mcp add islobodan-cruncher-mcp --command npx --arg -y --arg @slbdn/cruncher-mcp
mcp_servers:
islobodan-cruncher-mcp:
command: "npx"
args: ["-y", "@slbdn/cruncher-mcp"] {
"mcpServers": {
"islobodan-cruncher-mcp": {
"command": "npx",
"args": [
"-y",
"@slbdn/cruncher-mcp"
]
}
}
} 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.
- 2 Aug 26 +18
- Malware scan: unverified → pass ▲ security
- Stability: unverified → 0.20 ▲ functional
- 1 Aug 26 −7
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 31 Jul 26 −18
- Malware scan: pass → unverified ▼ security
- 27 Jul 26 +27
- Tool coverage: unverified → 100 ▲ functional
- First check of Schema quality: fail functional
- First check of Tool coverage: 4 functional
- First check of Schema quality: pass functional
- First check of Schema quality: good functional
- 26 Jul 26 47
First indexed and scored.
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
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 3 Aug 2026 · Analysed npm/@slbdn/[email protected]
Provenance none
Ecosystem: npm · Outcome: none
Dependencies 0 packages
0 packages in the resolved dependency tree.
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.
absolute ~17
Absolute value.
| Name | Type | Req | Description |
|---|---|---|---|
| value | number | yes | — |
No output schema declared.
No examples provided.
acos ~38
Arccosine. Result in degrees by default, or radians with unit param.
| Name | Type | Req | Description |
|---|---|---|---|
| unit | string | — | — |
| value | number | yes | — |
No output schema declared.
No examples provided.
add ~25
Adds two numbers.
| Name | Type | Req | Description |
|---|---|---|---|
| a | number | yes | — |
| b | number | yes | — |
No output schema declared.
No examples provided.
asin ~37
Arcsine. Result in degrees by default, or radians with unit param.
| Name | Type | Req | Description |
|---|---|---|---|
| unit | string | — | — |
| value | number | yes | — |
No output schema declared.
No examples provided.
atan ~37
Arctangent. Result in degrees by default, or radians with unit param.
| Name | Type | Req | Description |
|---|---|---|---|
| unit | string | — | — |
| value | number | yes | — |
No output schema declared.
No examples provided.
avg ~21
Average (mean) of numbers.
| Name | Type | Req | Description |
|---|---|---|---|
| numbers | array | yes | — |
No output schema declared.
No examples provided.
convert_unit ~60
Convert between common units. Categories: length, weight, temperature, area, volume, time, speed, digital_storage.
| Name | Type | Req | Description |
|---|---|---|---|
| category | string | yes | — |
| from | string | yes | — |
| to | string | yes | — |
| value | number | yes | — |
No output schema declared.
No examples provided.
cosine ~39
Cosine. Angle in degrees by default, or radians with unit: "radians".
| Name | Type | Req | Description |
|---|---|---|---|
| angle | number | yes | — |
| unit | string | — | — |
No output schema declared.
No examples provided.
count ~17
Count elements.
| Name | Type | Req | Description |
|---|---|---|---|
| numbers | array | yes | — |
No output schema declared.
No examples provided.
divide ~31
Divides two numbers. Errors on zero divisor.
| Name | Type | Req | Description |
|---|---|---|---|
| a | number | yes | — |
| b | number | yes | — |
No output schema declared.
No examples provided.
evaluate_expression ~142
Evaluate a mathematical expression. PRIMARY tool for ALL math: +, -, *, /, %, ^. Functions: sqrt, sin, cos, tan, asin, acos, atan, log10, ln, log(x,base), abs, round, floor, ceil, min, max. Constants: pi, e, tau, phi, sqrt2, euler_mascheroni, c, g, G, h, k, R, NA, e_charge, m_e, m_p. Parentheses and scientific notation (1e6) supported. Use explicit operators: 2 * pi, not 2pi.
| Name | Type | Req | Description |
|---|---|---|---|
| expression | string | yes | — |
No output schema declared.
No examples provided.
factorial ~52
Factorial of non-negative integer (n!). n > 170 overflows.
| Name | Type | Req | Description |
|---|---|---|---|
| n | number | yes | — |
| timeout | number | — | Custom timeout in ms (100-60000, default: 3000) |
No output schema declared.
No examples provided.
get_angle_mode ~15
Get current trig angle mode.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
get_constant ~29
Returns a mathematical, physical, or chemical constant. See enum values.
| Name | Type | Req | Description |
|---|---|---|---|
| name | string | yes | — |
No output schema declared.
No examples provided.
logarithm ~27
Base-10 logarithm. Errors on non-positive input.
| Name | Type | Req | Description |
|---|---|---|---|
| value | number | yes | — |
No output schema declared.
No examples provided.
max ~18
Maximum of numbers.
| Name | Type | Req | Description |
|---|---|---|---|
| numbers | array | yes | — |
No output schema declared.
No examples provided.
median ~40
Median of numbers.
| Name | Type | Req | Description |
|---|---|---|---|
| numbers | array | yes | — |
| timeout | number | — | Custom timeout in ms (100-60000, default: 3000) |
No output schema declared.
No examples provided.
min ~18
Minimum of numbers.
| Name | Type | Req | Description |
|---|---|---|---|
| numbers | array | yes | — |
No output schema declared.
No examples provided.
modulo ~34
Remainder of a / b. Errors on zero divisor.
| Name | Type | Req | Description |
|---|---|---|---|
| a | number | yes | — |
| b | number | yes | — |
No output schema declared.
No examples provided.
multiply ~27
Multiplies two numbers.
| Name | Type | Req | Description |
|---|---|---|---|
| a | number | yes | — |
| b | number | yes | — |
No output schema declared.
No examples provided.
natural_log ~27
Natural logarithm (ln). Errors on non-positive input.
| Name | Type | Req | Description |
|---|---|---|---|
| value | number | yes | — |
No output schema declared.
No examples provided.
percentage_change ~40
Percentage change from A to B. e.g., 50→80 = +60%
| Name | Type | Req | Description |
|---|---|---|---|
| from | number | yes | — |
| to | number | yes | — |
No output schema declared.
No examples provided.
percentage_of ~42
What is X% of Y? e.g., 15% of 200 = 30
| Name | Type | Req | Description |
|---|---|---|---|
| percent | number | yes | — |
| total | number | yes | — |
No output schema declared.
No examples provided.
percentage_reverse ~42
X is Y% of what? e.g., 30 is 15% of 200
| Name | Type | Req | Description |
|---|---|---|---|
| percent | number | yes | — |
| value | number | yes | — |
No output schema declared.
No examples provided.
power ~29
Raises a to the power of b.
| Name | Type | Req | Description |
|---|---|---|---|
| base | number | yes | — |
| exponent | number | yes | — |
No output schema declared.
No examples provided.
range ~23
Range (max - min) of numbers.
| Name | Type | Req | Description |
|---|---|---|---|
| numbers | array | yes | — |
No output schema declared.
No examples provided.
set_angle_mode ~30
Set global trig angle mode. Individual calls with unit param override this.
| Name | Type | Req | Description |
|---|---|---|---|
| mode | string | yes | — |
No output schema declared.
No examples provided.
sine ~39
Sine. Angle in degrees by default, or radians with unit: "radians".
| Name | Type | Req | Description |
|---|---|---|---|
| angle | number | yes | — |
| unit | string | — | — |
No output schema declared.
No examples provided.
sqrt ~22
Square root. Errors on negative input.
| Name | Type | Req | Description |
|---|---|---|---|
| value | number | yes | — |
No output schema declared.
No examples provided.
std_dev ~39
Sample standard deviation (n-1). Set population: true for population (n).
| Name | Type | Req | Description |
|---|---|---|---|
| numbers | array | yes | — |
| population | boolean | — | — |
No output schema declared.
No examples provided.
subtract ~27
Subtracts two numbers.
| Name | Type | Req | Description |
|---|---|---|---|
| a | number | yes | — |
| b | number | yes | — |
No output schema declared.
No examples provided.
sum ~18
Sum of numbers.
| Name | Type | Req | Description |
|---|---|---|---|
| numbers | array | yes | — |
No output schema declared.
No examples provided.
tangent ~39
Tangent. Angle in degrees by default, or radians with unit: "radians".
| Name | Type | Req | Description |
|---|---|---|---|
| angle | number | yes | — |
| unit | string | — | — |
No output schema declared.
No examples provided.
variance ~38
Sample variance (n-1). Set population: true for population variance (n).
| Name | Type | Req | Description |
|---|---|---|---|
| numbers | array | yes | — |
| population | boolean | — | — |
No output schema declared.
No examples provided.