# com.logiccommons/calculators (remote · mcp.logiccommons.com)

Find and run trustworthy calculators with clear methods, provenance, and sources.

- Trust score: 73/100 (medium)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-27

## Components

- remote · `mcp.logiccommons.com`: 73/100 (this document), [markdown](https://verifymcp.io/servers/com-logiccommons-calculators/mcp.md), [page](https://verifymcp.io/servers/com-logiccommons-calculators/mcp)

## Channel facts

- Endpoint: `https://mcp.logiccommons.com/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0-beta.2`

## Trust breakdown

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. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-09-27.

- **Endpoint Security**: 63/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 3 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 76/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 607 tokens (~202/item across 3 items; 3 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 43/100
  - Stability observed for 13 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 3 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### How do I install the com.logiccommons/calculators MCP server?

com.logiccommons/calculators is a hosted endpoint at https://mcp.logiccommons.com/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.

### Claude

```bash
claude mcp add --transport http com-logiccommons-calculators 'https://mcp.logiccommons.com/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "com-logiccommons-calculators": {
      "url": "https://mcp.logiccommons.com/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "com-logiccommons-calculators": {
      "type": "http",
      "url": "https://mcp.logiccommons.com/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.com-logiccommons-calculators]
url = "https://mcp.logiccommons.com/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-logiccommons-calculators": {
      "type": "remote",
      "url": "https://mcp.logiccommons.com/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-logiccommons-calculators --url 'https://mcp.logiccommons.com/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-logiccommons-calculators:
    url: "https://mcp.logiccommons.com/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "com-logiccommons-calculators": {
      "Transport": "http",
      "Url": "https://mcp.logiccommons.com/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-logiccommons-calculators -t streamable-http -u 'https://mcp.logiccommons.com/mcp'
```

### Other

```json
{
  "mcpServers": {
    "com-logiccommons-calculators": {
      "type": "http",
      "url": "https://mcp.logiccommons.com/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-09-27 (score 73, +1)

No change was recorded against any check on this day. Stability & Change Management went from 40 to 43. That category is still filling its 30-day observation window: 12 days of observed history at the previous scan, 13 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-25 (score 72, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-09-24 (score 72, +1)

No change was recorded against any check on this day. Stability & Change Management went from 30 to 33. That category is still filling its 30-day observation window: 9 days of observed history at the previous scan, 10 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-22 (score 71, +1)

No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-20 (score 70, +1)

No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-18 (score 69, +1)

No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-16 (score 68, +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.

### 2026-09-15 (score 67, 0)

- [functional improvement] Stability: unverified → 0.03
- [functional] Server version: 1.0.0 → 1.0.0-beta.2

## MCP tools (3)

### `get_calculator_schema` (~185 tokens)

Get the input and output schema for a calculator, generated from its reviewed contract: parameter types, units, allowed dropdown values and definitional bounds, plus outputs keyed by named range (including the status output). Table inputs carry a 'grid' block giving the exact number of rows to send, the column layout, which columns are editable, and how to shape a row; a table whose 'grid' block says writable=false cannot be supplied at all. Schema 0.18 exposes required and omitted declarations plus version-bound visibility tables; older versions require every input while awaiting metadata migration. Optionally resolves one immutable platform version. Returns trust metadata for the resolved version.

Input parameters:

- `platform_version` (integer|null): Optional positive platform version number. Omit for the current published version.
- `slug` (string, required): The calculator slug, e.g. 'steel-column-capacity-calculator'.

### `run_calculator` (~333 tokens)

Run a calculator with the given inputs. Inputs are validated against the resolved version's reviewed contract and computed by SpreadsheetWeb through the same proxy as the web channel. An optional platform_version pins both validation and computation to that immutable version. Returns outputs keyed by named range (including the status output) and trust metadata with a citation URL, resolvedInputs, and warnings for omitted inputs. Missing or blank visible required inputs are refused before computation; inspect get_calculator_schema and the complete error detail. For schema 0.18, optional omissions are sent explicitly as declared blank or standing default and disclosed with their values and sources. Older pinned contracts require all inputs during migration. Visibility follows version-bound dropdown truth tables; a missing controller makes its dependents indeterminate until it is supplied. A hidden controller is ignored only when all of its option branches have the same remaining visibility subtree; otherwise its dependents stay hidden. Hidden omissions use explicit blank/default values; supplied hidden inputs are retained with a not-applicable warning. Always read Model_Status and status outputs; CHECK and STOP are load-bearing verdicts about the result's validity. Results are informational and not professional advice; the applicable notice is returned in the trust block.

Input parameters:

- `inputs` (object, required): Input name/value pairs matching the calculator schema (from get_calculator_schema). A table input takes a list of rows matching its 'grid' block exactly; a table of the wrong extent or shape is refus…
- `platform_version` (integer|null): Optional positive platform version number. Omit for the current published version.
- `slug` (string, required): The calculator slug.

### `search_calculators` (~89 tokens)

Search the LogicCommons calculator catalog by keyword and optional category. Returns matching published calculators with slug, name, summary, category, a citation URL, and trust metadata.

Input parameters:

- `category` (string|null): Optional category slug to filter by, e.g. 'structural-civil'.
- `query` (string, required): Free-text query matched against calculator name, summary and category. Empty returns the catalog.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-logiccommons-calculators/mcp#diagnostics

## Score history

- 2026-09-27: 73
- 2026-09-26: 72
- 2026-09-25: 72
- 2026-09-24: 72
- 2026-09-23: 71
- 2026-09-22: 71
- 2026-09-21: 70
- 2026-09-20: 70
- 2026-09-19: 69
- 2026-09-18: 69
- 2026-09-17: 68
- 2026-09-16: 68
- 2026-09-15: 67
- 2026-09-14: 67

## Common questions

### What is the com.logiccommons/calculators MCP server?

com.logiccommons/calculators is an MCP server listed in the public MCP registry as com.logiccommons/calculators. Find and run trustworthy calculators with clear methods, provenance, and sources. This page covers its hosted endpoint (https://mcp.logiccommons.com/mcp).

### Is the com.logiccommons/calculators MCP server safe to use?

com.logiccommons/calculators scores 73 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 com.logiccommons/calculators MCP server expose?

com.logiccommons/calculators exposes 3 tools: get_calculator_schema, run_calculator, search_calculators. Their descriptions and schemas cost roughly 607 tokens of context every time the server is loaded.

### Does the com.logiccommons/calculators MCP server require authentication?

No. We connected to com.logiccommons/calculators without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the com.logiccommons/calculators MCP server still maintained?

com.logiccommons/calculators is still listed as active in the MCP registry. We last reached this channel on 27 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://mcp.logiccommons.com/mcp
- Website: https://www.logiccommons.com/
- Changelog RSS feed: https://verifymcp.io/servers/com-logiccommons-calculators/mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-logiccommons-calculators/mcp.json
- HTML version of this page: https://verifymcp.io/servers/com-logiccommons-calculators/mcp