datuma_k

Name: datuma_k
Author: marthvon

by marthvonversion 1.0.0i★ –iRuns on your computer

Registry nameio.github.marthvon/datuma-k

Install

Overview

Description from the maker (original English)

Query, validate, preview, and generate source from *.dtct data contracts and *.ngin templates.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Other

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: DATUMA_K

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "datuma-k": {
      "command": "npx",
      "args": [
        "-y",
        "@marthvon/datuma-k-mcp"
      ],
      "env": {
        "DATUMA_K": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add datuma-k --env DATUMA_K=your-value -- npx -y @marthvon/datuma-k-mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "datuma-k": {
      "command": "npx",
      "args": [
        "-y",
        "@marthvon/datuma-k-mcp"
      ],
      "env": {
        "DATUMA_K": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "datuma-k": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@marthvon/datuma-k-mcp"
      ],
      "env": {
        "DATUMA_K": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

DATUMA_K env
Absolute path to the datuma_k binary. Omit if datuma_k is already on PATH.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account marthvon, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Otheri

More stars than 0% of the other 32568 servers in this category
Published to the registry more recently than 41% of the other 32568 servers in this category
Basic checks equal to or better than 100% of the other 32568 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is datuma_k safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.0) reached the registry 2 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, FlyDocs

Alternatives

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Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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Runs on your computer★ 440MITUpdated 14 months ago

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Remote Desktop Commander

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Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.

Runs in the cloud★ 211Updated yesterday

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FlyDocs

by flydocs.ai

Spec-driven development workflow: your agent works issues, sessions and the status lifecycle.

Runs on your computerUpdated today

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

datuma_k MCP

stdio MCP server for agents using the installed datuma_k binary in an app repo. It does not link the compiler crate. Set DATUMA_K to the binary if it is not on PATH.

Install

Published to npm as @marthvon/datuma-k-mcp and to the MCP Registry as io.github.marthvon/datuma-k.

Cursor / Claude example (mcp.json):

"mcpServers": { "datuma_k": { "command": "npx", "args": ["-y", "@marthvon/datuma-k-mcp"] } } }

datuma_k must be on PATH. If it is not, point DATUMA_K at the binary:

"mcpServers": { "datuma_k": { "command": "npx", "args": ["-y", "@marthvon/datuma-k-mcp"], "env": { "DATUMA_K": "/ABS/PATH/TO/datuma_k/target/release/datuma_k" } } } }

From source

cd mcp

npm install npm run build

Then use "command": "node" with "args": ["/ABS/PATH/TO/datuma_k/mcp/dist/index.js"].

The process cwd should be the datuma_k project (the directory with .env), or pass root on each tool call.

Tools

Tool	Binary	Notes
`list_project`	(files + `.env`)	Directories and contract/template paths
`query_contracts`	`datuma_k catalog`	Optional `trait` / `model` / `field` / `attribute` / `type`
`validate`	`datuma_k check`	Parse + `data/keywords.md` required
`preview`	`datuma_k preview`	Plan without writing
`generate`	`datuma_k run`	Writes generated spans
`advise_ngin`	(local rules)	When to use ngin vs handwritten code
`infer_patterns`	`catalog` + `keywords.md`	Traits, widgets, association review notes, sync risks, aliases

Resources

datuma://language/dtct
datuma://language/ngin
datuma://language/standards
datuma://docs/keywords
datuma://docs/practices
datuma://docs/when-ngin

Prompts

add-model, add-field, scaffold-ngin, should-use-ngin, infer-contract-patterns

Tests

npm test

Publishing

Two registries, in this order. npm hosts the tarball; the MCP Registry hosts only metadata and verifies it against the published npm package, so npm must go first or the second publish fails with Registry validation failed for package.

Name	Where	Set in
`@marthvon/datuma-k-mcp`	npm package	`package.json` `name`
`io.github.marthvon/datuma-k`	MCP Registry server	`package.json` `mcpName` and `server.json` `name` — these two must match, or the registry rejects the publish

The io.github.marthvon/ prefix is not cosmetic: GitHub device-flow auth only grants that namespace. A different prefix needs DNS or HTTP auth.

One-time setup

brew install mcp-publisher            # or a binary from the registry releases page

npm login # npm account, scope @marthvon

npm requires 2FA to publish. If the account does not have it, npm publish fails with 403 ... Two-factor authentication or granular access token with bypass 2fa enabled is required, before it ever looks at the tarball. Check with npm profile get; enable with npm profile enable-2fa auth-and-writes or on npmjs.com, and keep the recovery codes.

Release

Bump the version in three places — the registry rejects a version it has already seen, and a mismatch between the npm package version and server.json packages[0].version fails verification:

package.json → version
server.json → version
server.json → packages[0].version

Then:

npm test                              # tsc + node --test

mcp-publisher validate # checks server.json against the live registry, publishes nothing npm publish --otp=123456 # prepublishOnly runs the build; drop --otp to be prompted mcp-publisher login github # device code → github.com/login/device mcp-publisher publish

mcp-publisher login persists a token, so day-to-day releases are npm publish then mcp-publisher publish.

Verify:

npm view @marthvon/datuma-k-mcp version

curl "https://registry.modelcontextprotocol.io/v0.1/servers?search=io.github.marthvon/datuma-k"

What ships

files in package.json limits the tarball to dist, resources, and README.md. resources/ is required at runtime — server.ts resolves it as dist/../resources — so dropping it from files produces a package that installs cleanly and fails on every resource read. Confirm with npm pack --dry-run before publishing.

Troubleshooting

Error	Cause
`403 ... Two-factor authentication ... is required`	2FA disabled on the npm account. See above.
`403 ... you do not have access`	The `@marthvon` scope belongs to an org; confirm membership with `npm org ls marthvon`.
`Registry validation failed for package`	npm publish did not happen yet, or `mcpName` in `package.json` does not match `name` in `server.json`.
`Invalid or expired Registry JWT token`	Re-run `mcp-publisher login github`.
`You do not have permission to publish this server`	Server name does not start with `io.github. /`.
`expected length <= 100` on `body.description`	`server.json` `description` is capped at 100 characters. The npm `description` is not.

datuma_k

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

FlyDocs

README from the maker

datuma_k MCP

Install

From source

Tools

Resources

Prompts

Tests

Publishing

One-time setup

Release

What ships

Troubleshooting