# com.apished/date-math-calculator

Date arithmetic: day differences, business days, age, leap years, day-of-week, add/subtract.

- **Type:** MCP server
- **Trust:** 60/100 (B), scored on the content rubric
- **Verification:** community-indexed — nobody has claimed this listing
- **Version:** 1.0.0
- **Author:** com.apished
- **License:** Unknown
- **Endpoints:** streamable-http https://apished.com/mcp/v1/datemath
- **Source:** https://apished.com
- **Endpoint health:** reachable (last checked 2026-09-30T05:59:27.302Z, 5 samples) — uptime is not a security property and is not part of the trust score
- **Compatible clients:** claude-code, cursor, copilot, chatgpt, gemini (basis: transport)

## Trust

60/100 (B), scored on the content rubric
- Publisher verified: no
- Install scripts: nothing suspicious found
- Prompt-injection scan: clean
- Obfuscation scan: clean
- Evidence age: 1 day

## Security scan

- **Status:** clean
- **Scanned:** 2026-09-30T05:59:27.302Z
- **Version scanned:** live
- **CVEs:** no coverage — this entry has no package coordinates to query OSV against, so "no known CVEs" is NOT asserted for it.

## Tools

6 declared. Observed from a live `tools/list` probe.
- `datemath_add` — Adds years/months/days to date. years/months are applied together with end-of-month clamping — e.g. 2026-01-31 + 1 month = 2026-02-28, not an overflowed 2026-03
- `datemath_age` — Age in whole years as of asOf (optional, defaults to the current UTC date). A Feb-29 birthDate is treated as falling on March 1 in a non-leap asOf year.
- `datemath_businessdays` — Counts days in [from, to] (inclusive on both ends) whose weekday is in weekdays (default mon-fri) and which aren't in holidays.
- `datemath_dayofweek` — Day of the week for date: both the weekday name and its ISO 8601 weekday number (1=Monday..7=Sunday).
- `datemath_diff` — Day difference between two YYYY-MM-DD dates: to minus from, in whole days. Negative if to is before from.
- `datemath_leapyear` — Checks whether year is a leap year in the Gregorian calendar.

## Install

**Verdict: review** — Installable, but 2 things to check first: No CVE coverage: this entry has no npm/PyPI coordinates to query OSV against, so "no known vulnerabilities" is not a claim that can be made about it.
**Cautions** (coverage gaps and advisories — never blocking)
- No CVE coverage: this entry has no npm/PyPI coordinates to query OSV against, so "no known vulnerabilities" is not a claim that can be made about it.
- No publisher has proved control of this listing; it is indexed, not vouched for.
**Config** (claude-code):
```json
"{\n  \"mcpServers\": {\n    \"date-math-calculator\": {\n      \"type\": \"http\",\n      \"url\": \"https://apished.com/mcp/v1/datemath\"\n    }\n  }\n}"
```

## Blast radius

Contained to moderate — no credential declaration found, from the publisher, the upstream registry, or the README. Known so far: runs on someone else's infrastructure; read-only tool surface.
- Floor 9, ceiling 27 (tier: unknown)
- `unknown` means the floor and ceiling land in different bands — not measured enough to name one. It does not mean low.
- This is impact, not likelihood. A high radius is not a defect: a filesystem server is supposed to write files. It is never part of the trust score.

## Machine-readable views of this entry

- Signed JSON: https://forgeregistry.com/api/v1/packages/com.apished%2Fdate-math-calculator
- Install plan: https://forgeregistry.com/api/v1/packages/com.apished%2Fdate-math-calculator/install-plan
- Alternatives: https://forgeregistry.com/api/v1/alternatives/com.apished%2Fdate-math-calculator
- HTML page: https://forgeregistry.com/registry/com.apished%2Fdate-math-calculator
- MCP: POST https://forgeregistry.com/api/mcp → `forge_get_package` / `forge_install_plan`

## About this document

Generated by Forge (https://forgeregistry.com) — a compact rendering of the same record served, signed, at the JSON URL above. Trust and scan facts are the registry's own measurements; anything Forge did not measure is named as unmeasured rather than omitted.