# MonsiTools Calculators

> Find and run exact business, finance and SaaS calculators instead of guessing the math.

- name: com.monsitools/calculators
- version: 1.0.1
- connection class: R0 (autonomous)
- trust: 82/100 flags: no-repository
- quality: 85/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/com.monsitools%2Fcalculators
- tools: https://api.protogrid.dev/v1/servers/com.monsitools%2Fcalculators/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "calculators": {
      "type": "http",
      "url": "https://monsitools.com/mcp",
      "headers": {
        "Authorization": "Bearer ${CALCULATORS_TOKEN}"
      }
    }
  }
}
```

Placeholders to fill: `${CALCULATORS_TOKEN}`.

## Trust

- hygiene: 80
- liveness: 99
- freshness: 100
- provenance: 55
- drivers: +dns-namespace +website +reachable +uptime-99% +updated-17d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 85/100 (good)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-06-18; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 86 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 3 of 3 tools declare readOnlyHint or destructiveHint
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: calculate (destructiveHint, idempotentHint); search_calculators (destructiveHint, idempotentHint); describe_calculator (destructiveHint, idempotentHint)
- pass `tools.token_cost`: about 406 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 100 (weight 15)

- pass `stability.changes`: 3 tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 3, about 406 tokens to load them all
- tool set hash: 2c3c64d7aa2a8b96d205975e0e730add
- tools last changed: 2026-10-09T05:54:34.099Z
- badge: [![protogrid quality](https://protogrid.dev/badge/com.monsitools/calculators.svg)](https://protogrid.dev/servers/com.monsitools/calculators)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-09 `calculate` changed (description, annotations)
  - before: Runs a MonsiTools calculator on the given inputs and returns the result. Needs a MonsiTools Premium API key, sent as 'Authorization: Bearer mt_live_...' when connecting.
  - after: Runs a MonsiTools calculator on the given inputs and returns the result. Works without a key for 10 calculations a day per IP address. A MonsiTools Premium API key, sent as 'Authorization: Bearer mt_live_...' when connecting, removes the daily limit.
- 2026-10-09 `describe_calculator` changed (annotations)
- 2026-10-09 `search_calculators` changed (annotations)

Full history: https://api.protogrid.dev/v1/servers/com.monsitools%2Fcalculators/changes

## Remotes

- https://monsitools.com/mcp (streamable-http, auth none, reachable true, uptime30d 0.9859155)

## Packages

_none_

## Tools (3)

- `calculate`: Runs a MonsiTools calculator on the given inputs and returns the result. Works without a key for 10 calculations a day per IP address. A MonsiTools Premium API key, sent as 'Authorization: Bearer mt_live_...' when connecting, removes the daily limit.
- `describe_calculator`: Returns a calculator's name, category, formula, input names and page URL, given its slug.
- `search_calculators`: Find MonsiTools calculators by keyword (for example 'runway', 'break even', 'roas', 'loan payment'). Returns each match's slug, name, category and input names. Use describe_calculator for details, then calculate to run one.