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calculators

R0· no sign-in

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

v1.0.0-beta.2 · active · website · descriptor JSON · versions

An agent can connect right now, no human step.Remote endpoint, no authentication, reachable on the last probe.
Quality80good
Trust80of 100
Uptime, 30 days100%
Latency p50261 ms

Connect

8 clients · secrets stay placeholders
{
  "mcpServers": {
    "calculators": {
      "type": "http",
      "url": "https://mcp.logiccommons.com/mcp"
    }
  }
}
claude mcp add --transport http calculators https://mcp.logiccommons.com/mcp
[mcp_servers.calculators]
url = "https://mcp.logiccommons.com/mcp"
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "calculators": {
      "type": "remote",
      "url": "https://mcp.logiccommons.com/mcp",
      "enabled": true
    }
  }
}
{
  "mcpServers": {
    "calculators": {
      "type": "http",
      "url": "https://mcp.logiccommons.com/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=calculators&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vbWNwLmxvZ2ljY29tbW9ucy5jb20vbWNwIn0%3D"
}
{
  "servers": {
    "calculators": {
      "type": "http",
      "url": "https://mcp.logiccommons.com/mcp"
    }
  }
}
{
  "mcpServers": {
    "calculators": {
      "httpUrl": "https://mcp.logiccommons.com/mcp"
    }
  }
}
extensions:
  "calculators":
    enabled: true
    name: "calculators"
    type: streamable_http
    uri: "https://mcp.logiccommons.com/mcp"
    timeout: 300

Quality 80 / 100good

protocol88 · weight 25
  • pass
    protocol.modernsupports 2026-07-28 (server/discover)
  • pass
    protocol.statelessanswers without a session
  • pass
    protocol.transportstreamable HTTP
  • warn
    protocol.list_ttltools/list declares ttlMs 0, so clients re-fetch it on every use
authorizationn/a · weight 15
  • n/a
    auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
  • n/a
    auth.secret_in_urlno templated URL
tool hygiene64 · weight 30
  • pass
    tools.descriptionsevery tool has a description
  • warn
    tools.description_length1 tools have descriptions over 1,024 characters, which crowds the context
  • pass
    tools.schemasevery tool has an object input schema
  • fail
    tools.annotationsno tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
  • fail
    tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: search_calculators (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_calculator_schema (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); run_calculator (readOnlyHint, destructiveHint, idempotentHint, openWorldHint)
  • pass
    tools.token_costabout 919 tokens to load every tool
  • pass
    tools.api_dumptools are not a one-to-one API dump
stability100 · weight 15
  • pass
    stability.changes1 tool changes in 30 days
  • pass
    stability.rug_pullno tool changed its meaning under the same name
dependenciesn/a · weight 15
  • n/a
    deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

3 tools, about 919 tokens to load them all · tool set c3dc4774875d · tools last changed 2026-10-15 · checked 2026-10-20 12:13 UTC

Tool changes

  • run_calculatorchangeddescription
    before

    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.

    after · 95% of words in common

    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 truth tables over dropdown options, or over blank/set for a clearable optional input (omitted, null or whitespace is blank; 0 is set); a missing required 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.

Full history: list_changes · trend: quality JSON.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 80 / 100

no-repository
provenance55
liveness100
freshness85
hygiene80

+dns-namespace +website +reachable +uptime-100% ~updated-36d-ago -no-repository

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remoteauthreachableuptime 30dp50protocollast ok
https://mcp.logiccommons.com/mcp streamable-httpnoneyes100%261 ms2026-07-282026-10-20

Tools (3)

get_calculator_schemaGet 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.
run_calculatorRun 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 truth tables over dropdown options, or over blank/set for a clearable optional input (omitted, null or whitespace is blank; 0 is set); a missing required 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.
search_calculatorsSearch the LogicCommons calculator catalog by keyword and optional category. Returns matching published calculators with slug, name, summary, category, a citation URL, and trust metadata.

Schemas: list_tools.

Similar MCP servers

Official server.json
{
  "name": "com.logiccommons/calculators",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://mcp.logiccommons.com/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "1.0.0-beta.2",
  "websiteUrl": "https://www.logiccommons.com",
  "description": "Find and run trustworthy calculators with clear methods, provenance, and sources."
}