io.github.coo-quack/calc-mcp
NPM · @COO-QUACK/CALC-MCP · SCANNED AUG 3
21 MCP tools for math, randomness, dates, encoding, hashing, and more — deterministic and accurate.
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 Security87
- No malware found by supply-chain analysis.Pass
- Only part of the dependency tree could be resolved (106 of 110), so this covers what we could see, not the whole tree.Partial
- No install/post-install scripts declared.Pass
- Only part of the dependency tree could be resolved (106 of 110), so this covers what we could see, not the whole tree. View diagnostics → Partial
Provenance & Transparency84
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Cryptographically verified build provenance (signed, bound to coo-quack/calc-mcp). View diagnostics → Pass
- License check failed: no license is declared. See how to fix → Fail
- Actively maintained (last published 10 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability77
- AI-judged instruction clarity (excellent).Pass
- Tool/resource definitions use about 1697 tokens (~80/item across 21 items; 21 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management27
- Stability observed for 8 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
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 · @coo-quack/calc-mcp
claude mcp add coo-quack-calc-mcp -- npx -y @coo-quack/calc-mcp
codex mcp add coo-quack-calc-mcp -- npx -y @coo-quack/calc-mcp
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"coo-quack-calc-mcp": {
"type": "local",
"command": [
"npx",
"-y",
"@coo-quack/calc-mcp"
],
"enabled": true
}
}
} openclaw mcp add coo-quack-calc-mcp --command npx --arg -y --arg @coo-quack/calc-mcp
mcp_servers:
coo-quack-calc-mcp:
command: "npx"
args: ["-y", "@coo-quack/calc-mcp"] {
"mcpServers": {
"coo-quack-calc-mcp": {
"command": "npx",
"args": [
"-y",
"@coo-quack/calc-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.
- 3 Aug 26 +4
- Stability: unverified → 0.27 ▲ functional
- 2 Aug 26 +37
- Provenance: unverified → pass ▲ security
- Install scripts: unverified → pass ▲ security
- Known CVEs: unverified → partial ▲ security
- Stability: Stability not yet verified: not enough scan history yet (needs a 30-day window). security
- The attested source repository moved: coo-quack/calc-mcp security
- License: unverified → fail ▼ functional
- Security disclosure: fail → unverified ▼ functional
- Tool coverage: 100 → unverified ▼ functional
- Schema quality: unverified → excellent ▲ functional
- Maintenance: unverified → pass ▲ functional
- MCP protocol: unverified → pass ▲ functional
- Dependency health: unverified → partial ▲ functional
- First check of Schema quality: unverified functional
- 1 Aug 26 +15
- Malware scan: unverified → pass ▲ security
- 31 Jul 26 −25
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 27 Jul 26 46
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 3 Aug 2026 · Analysed npm/@coo-quack/[email protected]
Provenance verified
Ecosystem: npm · Outcome: verified
Reason: verified
- Source repo:
- coo-quack/calc-mcp
- Certificate issuer:
- https://token.actions.githubusercontent.com
- Certificate SAN:
- https://github.com/coo-quack/calc-mcp/.github/workflows/release.yml@refs/heads/main
- Rekor log index:
- 2230696187
- Predicate type:
- https://slsa.dev/provenance/v1
- Subject digest:
- sha512:1f8ade42a829c3fe1bb6ee39115da4b0e21314dafe37504d9b85d93097418a902b8e519875c1f9afe8ee6e182a0e8a9975e7a7de4c6ba16fe97053dfc
- Discovery method:
- attestation_endpoint
Dependencies 106 packages
106 packages in the resolved dependency tree · 106 deprecated · 33 stale.
The dependency tree was only partially resolved, so these counts may be incomplete.
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.
base ~61
Convert numbers between bases (2-36), supports large numbers via BigInt
| Name | Type | Req | Description |
|---|---|---|---|
| from | integer | yes | Source base (2-36) |
| to | integer | yes | Target base (2-36) |
| value | — | yes | Value to convert (string or number) |
No output schema declared.
No examples provided.
base64 ~39
Encode or decode Base64 strings
| Name | Type | Req | Description |
|---|---|---|---|
| action | string | yes | Whether to encode or decode |
| input | string | yes | String to encode or decode |
No output schema declared.
No examples provided.
char_info ~35
Get Unicode information about characters (code point, block, category)
| Name | Type | Req | Description |
|---|---|---|---|
| char | string | yes | Character(s) to get info about |
No output schema declared.
No examples provided.
color ~85
Convert colors between HEX, RGB, and HSL formats
| Name | Type | Req | Description |
|---|---|---|---|
| color | string | yes | Color value: #hex (3/4/6/8 digits), rgb(r,g,b), rgba(r,g,b,a), hsl(h,s%,l%), hsla(h,s%,l%,a), or named color |
| to | string | — | Target format (returns all if omitted) |
No output schema declared.
No examples provided.
convert ~69
Convert between units: length, weight, temperature, area, volume, speed, data, time
| Name | Type | Req | Description |
|---|---|---|---|
| category | string | — | Category (auto-detected if omitted) |
| from | string | yes | Source unit |
| to | string | yes | Target unit |
| value | number | yes | Value to convert |
No output schema declared.
No examples provided.
count ~50
Count characters (grapheme clusters), words, lines, and bytes in text
| Name | Type | Req | Description |
|---|---|---|---|
| encoding | string | — | Encoding for byte count (default: utf8) |
| text | string | yes | Text to analyze |
No output schema declared.
No examples provided.
cron_parse ~73
Parse cron expression and return next N execution times
| Name | Type | Req | Description |
|---|---|---|---|
| count | integer | — | Number of next occurrences to return (default: 5, max: 100) |
| expression | string | yes | Cron expression (5 fields: min hour dom mon dow) |
| timezone | string | — | IANA timezone (default: UTC) |
No output schema declared.
No examples provided.
date ~93
Date calculations: diff between dates, add to date, weekday, and Japanese wareki conversion
| Name | Type | Req | Description |
|---|---|---|---|
| action | string | yes | diff: date difference, add: add to date, weekday, wareki |
| amount | number | — | Amount to add |
| date | string | yes | Date string (ISO8601) |
| date2 | string | — | Second date for diff |
| unit | string | — | Unit for add |
No output schema declared.
No examples provided.
datetime ~170
Get current datetime, convert timezones, format dates, and convert UNIX timestamps
| Name | Type | Req | Description |
|---|---|---|---|
| action | string | yes | now: current datetime, convert: timezone conversion, format: reformat datetime, timestamp: unix↔ISO8601 |
| datetime | string | — | ISO8601 datetime string for convert/format |
| format | string | — | Output format: iso, date, time, full, short, or date-fns pattern (e.g. yyyy/MM/dd HH:mm), or Intl JSON options |
| fromTimezone | string | — | Source timezone for conversion |
| timestamp | number | — | UNIX timestamp in seconds for timestamp action |
| timezone | string | — | IANA timezone (e.g. Asia/Tokyo, America/New_York) |
| toTimezone | string | — | Target timezone for conversion |
No output schema declared.
No examples provided.
diff ~81
Compare two texts: line-by-line diff (Myers algorithm, falls back to full replacement if edit distance exceeds 1000) or Levenshtein distance
| Name | Type | Req | Description |
|---|---|---|---|
| action | string | — | diff: line diff (default), distance: Levenshtein distance |
| text1 | string | yes | First text |
| text2 | string | yes | Second text |
No output schema declared.
No examples provided.
encode ~53
Encode or decode strings using URL, HTML, or Unicode encoding
| Name | Type | Req | Description |
|---|---|---|---|
| action | string | yes | Whether to encode or decode |
| input | string | yes | String to encode or decode |
| type | string | yes | Encoding type |
No output schema declared.
No examples provided.
format_validate ~44
Validate and parse JSON, CSV, XML, or YAML strings
| Name | Type | Req | Description |
|---|---|---|---|
| format | string | yes | Format to validate as |
| input | string | yes | String to validate/parse |
No output schema declared.
No examples provided.
hash ~110
Compute hash or HMAC of a string using MD5, SHA1, SHA256, SHA512, or CRC32. WARNING: MD5 and SHA1 are cryptographically broken and MUST NOT be used for security (use SHA-256 or SHA-512 instead).
| Name | Type | Req | Description |
|---|---|---|---|
| action | string | — | Action: hash (default) or hmac |
| algorithm | string | yes | Hash algorithm to use |
| input | string | yes | String to hash |
| key | string | — | Secret key for HMAC |
No output schema declared.
No examples provided.
ip ~94
IP address info, CIDR contains check, and range calculation
| Name | Type | Req | Description |
|---|---|---|---|
| action | string | yes | info: IP details, contains: check if IP in CIDR, range: CIDR range |
| cidr | string | — | CIDR notation (e.g. 192.168.1.0/24) |
| ip | string | — | IP address |
| target | string | — | Target IP to check against CIDR |
No output schema declared.
No examples provided.
jwt_decode ~68
Decode JWT token header and payload for inspection only. WARNING: this tool does NOT verify the signature; never trust the payload for authentication or authorization without separate signature verification using the issuer's verification key (shared secret or public key, depending on alg).
| Name | Type | Req | Description |
|---|---|---|---|
| token | string | yes | JWT token to decode |
No output schema declared.
No examples provided.
luhn ~50
Validate or generate check digits using the Luhn algorithm
| Name | Type | Req | Description |
|---|---|---|---|
| action | string | — | validate (default) or generate check digit |
| number | string | yes | Number string to validate or generate check digit for |
No output schema declared.
No examples provided.
math ~54
Evaluate math expressions or compute statistics on numbers
| Name | Type | Req | Description |
|---|---|---|---|
| action | string | — | Action: eval (default) or statistics |
| expression | string | — | Math expression to evaluate |
| values | array | — | Array of numbers for statistics |
No output schema declared.
No examples provided.
random ~263
Generate random values: UUID, ULID, secure password (with fine-grained options), random number, or shuffle a list
| Name | Type | Req | Description |
|---|---|---|---|
| charset | string | — | Custom character set for password (overrides uppercase/numbers/symbols options) |
| excludeChars | string | — | Characters to exclude from password (e.g. "\\|{}") |
| items | array | — | Items to shuffle (for type=shuffle) |
| length | integer | — | Length for password generation (default: 16) |
| max | number | — | Maximum value for number generation (default: 100) |
| min | number | — | Minimum value for number generation (default: 0) |
| numbers | boolean | — | Include numbers in password (default: true) |
| readable | boolean | — | Readable mode: excludes ambiguous characters (l/1/I/O/0/o) for easy reading |
| symbols | boolean | — | Include symbols in password (default: true) |
| type | string | yes | Type of random value to generate: uuid, ulid, password, number, or shuffle |
| uppercase | boolean | — | Include uppercase letters in password (default: true) |
| uuidVersion | string | — | UUID version: v4 (random, default) or v7 (time-ordered) |
No output schema declared.
No examples provided.
regex ~78
Test, match, matchAll, or replace using regular expressions
| Name | Type | Req | Description |
|---|---|---|---|
| action | string | yes | Action to perform |
| flags | string | — | Regex flags (g, i, m, etc.) |
| pattern | string | yes | Regular expression pattern |
| replacement | string | — | Replacement string for replace |
| text | string | yes | Text to search |
No output schema declared.
No examples provided.
semver ~92
Semantic versioning: compare, validate, and check range satisfaction
| Name | Type | Req | Description |
|---|---|---|---|
| action | string | yes | compare: compare two versions, valid: check validity, satisfies: range match, parse: extract components |
| range | string | — | Version range for satisfies (e.g. ^1.0.0) |
| version | string | yes | Semver version string |
| version2 | string | — | Second version for compare |
No output schema declared.
No examples provided.
url_parse ~35
Parse a URL into its components (protocol, host, path, params, etc.)
| Name | Type | Req | Description |
|---|---|---|---|
| url | string | yes | URL to parse |
No output schema declared.
No examples provided.