MCP.Market

Metamodel MCP server

online · 100% uptime
by joegra2003·io.github.joegra2003/metamodel·v1.2.0
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AI-callable calculators and engineering models with real formulas. No hallucinated math.

B79/100grade B
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Safety scan
B79/100

full report

Adoption
Growing

0 stars32 downloads/wk

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Metamodel tools (4, 1 write)

write = sends, deletes, buys or posts
  • metamodel_computewrite actionFree

    Run a computation on a MetaModel project. Send input values and get computed outputs from all models. Inputs are auto-routed to the correct model by property name. Models marked "presentation": true in results are display scaffolding, not engineering outputs. Use metamodel_get_schema first to discover available inputs and outputs.

  • metamodel_export_knFree

    Export a published MetaModel project as KN notation — a human-readable text spelling of the model: nested Component blocks, "Name: value" literals, "Name: expression" formulas, dotted cross-references. Deliberately lossy (rules, indicators, validations, table data and views are omitted). Useful for reading or diffing the engineering knowledge behind a project.

  • metamodel_get_schemaFree

    Get the input/output schema for a published MetaModel project. Returns model names, input parameters (with types, defaults, validation), and output fields. Models marked "presentation": true are display scaffolding (3D scenes etc.) — skip them for engineering analysis. Use a token from metamodel_list_projects.

  • metamodel_list_projectsFree

    Browse available MetaModel calculators and engineering models. Returns project names, descriptions, tokens, and model names for each published project.

Public scan report

scanner v0.1.9 · 2026-09-25 · same rubric, same numbers if you re-run it

1 high
  • Code scan4 source files scanned25/25
  • Live reliabilityremote reachable in 964ms20/20
  • Tool poisoning4 tool descriptions checked15/15
  • Auth qualityopen endpoint exposes 1 write-action tools with no auth3/15
  • Maintenancelast push 34 days ago12/15
  • Maintainer identitynamespace and repository owner differ4/10

Findings (1)

  • highWrite-action tools reachable without authenticationauth.open-write
Overall 79/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Metamodel compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
79/100
higher than 58% of 48,255 servers
Tools
4
the typical server has 7
Tools that change things
25%
typical: 0%. Fewer write tools means less an agent can break
Uptime
100%
of our recent checks; the typical remote server answers 100%
Response time
394 ms
faster than 37% of 30,031 servers
Downloads a week
32
more than 20% of 12,191 servers with a package

What its tools let an agent do: 3 read · 1 change

Install Metamodel in Claude Code, Cursor or VS Code

claude mcp add --transport http metamodel https://www.metamodel.app/api/mcp
Add to Cursor

What the publisher says

From the Metamodel repository's README, as published. We do not edit it. Read it on GitHub

MetaModel MCP Server

An MCP (Model Context Protocol) server that lets AI assistants use MetaModel's formula engine for certified computation. Turn published calculators, pricing tools, and engineering models into AI-callable tools — no hallucinated math.

All tools are read-only. This server fetches published project schemas and runs stateless computations. It never writes, modifies, or stores any data.

Quick Start

Remote (hosted) — easiest

No install. Add the URL as a custom connector:

https://www.metamodel.app/api/mcp
  • Claude.ai / Claude Desktop: Settings → Connectors → Add custom connector → paste the URL
  • Claude Code: claude mcp add --transport http metamodel https://www.metamodel.app/api/mcp

Works on web and mobile; no Node required. The hosted endpoint is stateless, read-only, and rate-limited.

Claude Desktop

Add to your Claude Desktop config (~/Library/Application Support/Claude/claudedesktopconfig.json on macOS):

{
  "mcpServers": {
    "metamodel": {
      "command": "npx",
      "args": ["-y", "metamodel-mcp"]
    }
  }
}

Claude Code

claude mcp add metamodel -- npx -y metamodel-mcp

Other MCP Clients

Any MCP-compatible client can connect via stdio:

npx -y metamodel-mcp

Tools

metamodellistprojects

Browse available calculators and engineering models. Returns project names, descriptions, publish tokens, and model names.

  • Annotations: readOnlyHint: true

metamodelgetschema

Discover inputs and outputs for a specific project. Returns model names, input parameters (with types, defaults, validation rules), output fields, and formulas.

  • Annotations: readOnlyHint: true

metamodel_compute

Run a computation with input values. Send inputs once — they're auto-routed to the correct model by property name. Outputs from all models are returned, including cross-model cascading.

  • Annotations: readOnlyHint: true

Examples

Example 1: List Available Projects

Prompt: "What calculators are available on MetaModel?"

Tool call: metamodellistprojects()

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Metamodel: common questions

Is Metamodel MCP server safe?
Mostly: it is graded B (79/100). Read the Metamodel safety report
How do I install Metamodel?
It runs remotely at www.metamodel.app. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does Metamodel need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Metamodel maintained?
The last commit was 73 days ago (2026-08-23). The latest release is v1.2.0.
Is Metamodel up?
100% of our last 28 checks got an answer. We check remote servers about four times a day.
How does Metamodel compare with other MCP servers?
safety score 79/100 (higher than 58% of 48,255 servers); tools 4 (the typical server has 7); tools that change things 25% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.