pyxsd

Name: pyxsd
Author: knorby

by knorbyversion 1.4.0i★ 11iRuns on your computer

Registry nameio.github.knorby/pyxsd

How to install

What it does

Explore XML schemas, validate XML documents, and transform typed document trees.

Connects Runs on your computer
Account or key No key needed
Category Docs, sheets & office work

Install

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

Passed 2/3 checks · Runs on your computer · ✓ Commands checked Nov 13, 2026

First: which AI do you use?

ClaudeWeb · app · phoneChatGPTWebClaude CodeTerminalCursorCode editorVS CodeCode editorOtherOther apps

Pick your app and the steps appear below.

Works with Claude, with some setup first

Install Python (uv) on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone

Let AI install it

Copy this message into a Claude chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.

Please install the MCP server pyxsd for Claude on this computer, in this order: 1) Check uv with uv --version. If it is missing, tell me to install it from https://docs.astral.sh/uv/getting-started/installation/; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): { "mcpServers": { "pyxsd": { "command": "uvx", "args": [ "pyxsd", "mcp" ] } } } 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) No key is needed. 5) Do what we agreed, then check that the pyxsd tools really show up.

This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.

1
Install uv (if you don’t have it)
Already installed? Check first · Open Terminal, type this command and press Enter
uv --version
- A version number such as uv … = installed, skip this step
- "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
How to open Terminal
Mac: press ⌘ + Space, type Terminal, press Enter
Windows: open Start, type Windows PowerShell, then Open
Not installed: uv has no click-through installer. Copy the one-line command for your system (macOS or Windows) from uv’s official page into Terminal · no separate Python install needed; uv downloads it when required
Open the uv download page ↗
When it’s done, close Terminal, open it again and run the same command. You should see a version number: uv --version
Install once; it works for everything that needs uv
Done
Open the Claude desktop app’s settings file
SettingsDeveloperEdit Config
Done

Paste these settings and save the file

{
  "mcpServers": {
    "pyxsd": {
      "command": "uvx",
      "args": [
        "pyxsd",
        "mcp"
      ]
    }
  }
}

Done

Quit Claude and open it again
Done
Try it
Use pyxsd and tell me what you can do for me, then show me one thing
✓ If Claude says it is using pyxsd or shows a pyxsd tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

ChatGPT cannot connect pyxsd yet

pyxsd runs on your computer, but ChatGPT can only connect servers that run on the web

What you can do instead

A · Use an app that can connect pyxsd

Steps for Claude →Install Python (uv) on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone
Steps for Claude Code →Install Python (uv) on your computer first (one time)
Steps for Cursor →Install Python (uv) on your computer first (one time)
Steps for VS Code →Install Python (uv) on your computer first (one time)

B · Others in Docs, sheets & office work that work with ChatGPT

Picked from the most used in the same category, only ones that connect by address with no key

Puter MCP✓ ChatGPT
LMCP✓ ChatGPT
Keeper.sh✓ ChatGPT

Works with Claude Code, with some setup first

Install Python (uv) on your computer first (one time)

Let AI install it

Copy this message into a Claude Code chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.

Please install the MCP server pyxsd for Claude Code on this computer, in this order: 1) Check uv with uv --version. If it is missing, tell me to install it from https://docs.astral.sh/uv/getting-started/installation/; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): claude mcp add --scope user pyxsd -- uvx pyxsd mcp 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) No key is needed. 5) Do what we agreed, then check that the pyxsd tools really show up.

This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.

1
Install uv (if you don’t have it)
Already installed? Check first · Open Terminal, type this command and press Enter
uv --version
- A version number such as uv … = installed, skip this step
- "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
How to open Terminal
Mac: press ⌘ + Space, type Terminal, press Enter
Windows: open Start, type Windows PowerShell, then Open
Not installed: uv has no click-through installer. Copy the one-line command for your system (macOS or Windows) from uv’s official page into Terminal · no separate Python install needed; uv downloads it when required
Open the uv download page ↗
When it’s done, close Terminal, open it again and run the same command. You should see a version number: uv --version
Install once; it works for everything that needs uv
Done
Open Terminal
Mac: press Command+Space and type Terminal · Windows: open PowerShell
Done

Paste this command and press Enter

claude mcp add --scope user pyxsd -- uvx pyxsd mcp

Done

Type /mcp in Claude Code
You should see pyxsd listed as connected
Done
Try it
Use pyxsd and tell me what you can do for me, then show me one thing
✓ If Claude Code says it is using pyxsd or shows a pyxsd tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with Cursor, with some setup first

Install Python (uv) on your computer first (one time)

Let AI install it

Copy this message into a Cursor chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.

Please install the MCP server pyxsd for Cursor on this computer, in this order: 1) Check uv with uv --version. If it is missing, tell me to install it from https://docs.astral.sh/uv/getting-started/installation/; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): { "mcpServers": { "pyxsd": { "command": "uvx", "args": [ "pyxsd", "mcp" ] } } } 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) No key is needed. 5) Do what we agreed, then check that the pyxsd tools really show up.

This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.

1
Install uv (if you don’t have it)
Already installed? Check first · Open Terminal, type this command and press Enter
uv --version
- A version number such as uv … = installed, skip this step
- "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
How to open Terminal
Mac: press ⌘ + Space, type Terminal, press Enter
Windows: open Start, type Windows PowerShell, then Open
Not installed: uv has no click-through installer. Copy the one-line command for your system (macOS or Windows) from uv’s official page into Terminal · no separate Python install needed; uv downloads it when required
Open the uv download page ↗
When it’s done, close Terminal, open it again and run the same command. You should see a version number: uv --version
Install once; it works for everything that needs uv
Done
Click this button to open Cursor
Open in Cursor
Cursor asks you to confirm; click Install
Done
Open the AI chat in Cursor in Agent mode
Done
Try it
Use pyxsd and tell me what you can do for me, then show me one thing
✓ If Cursor says it is using pyxsd or shows a pyxsd tool in the answer, you are connected

Menu names checked against Cursor’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with VS Code, with some setup first

Install Python (uv) on your computer first (one time)

Let AI install it

Copy this message into a VS Code chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.

Please install the MCP server pyxsd for VS Code on this computer, in this order: 1) Check uv with uv --version. If it is missing, tell me to install it from https://docs.astral.sh/uv/getting-started/installation/; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): { "servers": { "pyxsd": { "type": "stdio", "command": "uvx", "args": [ "pyxsd", "mcp" ] } } } 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) No key is needed. 5) Do what we agreed, then check that the pyxsd tools really show up.

This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.

1
Install uv (if you don’t have it)
Already installed? Check first · Open Terminal, type this command and press Enter
uv --version
- A version number such as uv … = installed, skip this step
- "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
How to open Terminal
Mac: press ⌘ + Space, type Terminal, press Enter
Windows: open Start, type Windows PowerShell, then Open
Not installed: uv has no click-through installer. Copy the one-line command for your system (macOS or Windows) from uv’s official page into Terminal · no separate Python install needed; uv downloads it when required
Open the uv download page ↗
When it’s done, close Terminal, open it again and run the same command. You should see a version number: uv --version
Install once; it works for everything that needs uv
Done
Click this button to open VS Code
Open in VS Code
VS Code asks you to confirm; click Install
Done
Open the AI chat in VS Code in Agent mode
Done
Try it
Use pyxsd and tell me what you can do for me, then show me one thing
✓ If VS Code says it is using pyxsd or shows a pyxsd tool in the answer, you are connected

Menu names checked against VS Code’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Other apps that use MCP, such as Windsurf, Zed or Gemini CLI, each add servers differently. See how in the app list.

See every app that uses MCP →

JSON settings are under “For developers” below

Stuck? Ask people who use pyxsd💬 Discussion →

For developers: Terminal commands and JSON settings

Installed on your computer

Claude Code

claude mcp add --scope user pyxsd -- uvx pyxsd mcp

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "pyxsd": {
      "command": "uvx",
      "args": [
        "pyxsd",
        "mcp"
      ]
    }
  }
}

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "pyxsd": {
      "command": "uvx",
      "args": [
        "pyxsd",
        "mcp"
      ]
    }
  }
}

VS Code (mcp.json)

{
  "servers": {
    "pyxsd": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "pyxsd",
        "mcp"
      ]
    }
  }
}

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

At a glance

GitHub stars i: 11
Downloads per weeki: 144/wk
Licence i: No licence stated
Connection: Runs on your computer
Transport: stdio
Latest versioni: 1.4.0
Categoryi: Docs, sheets & office work
Published to registryi: Nov 8, 2026
Code last changedi: Nov 15, 2026
Maker: knorby
Packages: pypi: pyxsd
Repo: knorby/pyxsd
Website: pyxsd.knorby.com
Registry status: Active

Which apps can use it

Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.

Run on your computer in

Claude Goose LM Studio Msty Studio Cherry Studio Cursor VS Code + GitHub Copilot Visual Studio Windsurf (Devin Desktop)Zed Kiro Cline Continue JetBrains AI Assistant Claude Code Codex CLI Gemini CLI OpenCode nodecode Warp LibreChat Raycast

All apps, with pros and cons →

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 16, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account knorby, which owns the repo
✓ Pass
Still maintained
Code last changed yesterday
! Caution
Has a licence
GitHub could not identify the licence type; open the file to check
– 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

Published vulnerabilities (OSV.dev)

No entries on OSV.dev for pyxsd@1.4.0

Checks only this package version, not every dependency · checked Nov 15, 2026

What we check → · JSON

Makers: ask for a re-check or report wrong info

Discussion

Ask, share a tip or report that it does not work. Sorted by what people marked helpful.

No posts yet. Be the first to ask or share.

Posts here are written by users, not the PopNx team.

User reviews

No reviews yet

Compared with others in Docs, sheets & office worki

More stars than 94% of the other 3972 servers in this category
Published to the registry more recently than 80% of the other 3972 servers in this category
Basic checks equal to or better than 47% of the other 3972 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 pyxsd safe?

It passed 2 of 3 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 yesterday, and the latest version (1.4.0) reached the registry 8 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Python (uv) on your computer.

What can I use instead?

In the same category: Puter MCP, XcodeBuildMCP, Anki MCP Server, Sosumi, Zapier

Similar alternatives

Same category, other makers, commands already checked. Official ones first, then by stars.

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

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How to connect

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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.

pyxsd

pyxsd compiles XML Schema (XSD) into Python classes, then validates and binds XML documents into typed object trees. It combines structured validation reports, XPath and ElementTree queries, user-defined transforms, and XML serialization, with optional Pydantic and Arrow/Parquet integrations. Use it when you need schema-driven validation and XML processing, not just an XML parser: compile a schema once, then inspect, transform, or export many documents.

Install

Requires Python 3.11 or newer:

pip install pyxsd

For the MCP server, pip install 'pyxsd[mcp]' provides the pyxsd-mcp command, or configure your client to launch the server with uvx. Install pyxsd[mcp-all] instead when the server should also project records through Arrow; transformation execution remains disabled by default.

"mcpServers": { "pyxsd": { "command": "uvx", "args": ["--from", "pyxsd[mcp]", "pyxsd-mcp"] } } }

For the bundled agent skills:

npx skills add knorby/pyxsd

See MCP setup for storage and trust options and agent skills for other clients. MCP transformation execution is disabled by default.

Quickstart

This example runs without any files or downloads:

from io import StringIO

from pyxsd import Schema

schema = Schema.compile( StringIO("""

""") ) schema.require_valid() document = schema.parse(StringIO(" 42 ")) document.require_valid() print(document.to_dict()["$"]) # 42

Compilation generates Python classes at runtime; no separate code-generation step is needed. Parsing records recoverable validation errors rather than raising them automatically. require_valid() raises ValidationError when the report contains errors.

The quickstart supplies a complete file-based example with queries, edits, and fresh validation. The same install also provides a CLI:

pyxsd -i inventory.xml -s inventory.xsd --namespaces strict --strict

Use that command with your own files or the quickstart's fixtures. --strict makes validation errors fail the command; a bare run does not write XML.

Work with your data

Validate and diagnose XML: inspect issue codes, phases, and exact source occurrences.
Query and edit documents: use XPath or ElementTree paths, export dictionaries/JSON, and revalidate edits.
Convert JSON data: import and export Parker, BadgerFish, JsonML, native pyxsd, and schema-driven pyxsd-json formats, and generate JSON Schema from XSD.
Write transforms: apply Python functions or reusable transform classes to the bound tree.
Process multiple documents: reuse a compiled schema sequentially and choose whether to stop or report failures.
Connect Pydantic and Arrow: generate access models or schema-derived tables and Parquet with optional extras.
Use MCP tools: explore schemas and inspect XML diagnostics through a local stdio server. Transform execution is disabled by default; trusted-local previews require explicit opt-in.

For runnable applications, browse the examples: GPX statistics, document and diagram rendering, healthcare conversion and diagnosis, and analytical workflows. Each family documents its inputs and setup.

Scope and limits

pyxsd supports XSD 1.1 with an optional XSD 1.0 mode. Namespace-aware binding is the default (ParseModes.NAMESPACED and CLI --namespaces strict). Pass ParseModes.STRICT, ParseModes.LAX, or --namespaces legacy explicitly when a document needs the historical local-name matching. See binding modes, supported features and gaps, and W3C test-suite results before choosing it for a particular schema.

Parsing materializes the XML tree. Validation does not repair invalid input, and the Python object tree is not a lossless source representation. Read the data model for access and export limits. For untrusted input, configure parser protections and resource limits as described in XML security.

Documentation and contributing

Full documentation · Python API · CLI reference · Contributing · Changelog

The documentation site follows develop and may describe unreleased behavior. For release-specific sources, select the matching tag in this repository.

pyxsd began at Oak Ridge National Laboratory in 2006 and was revived for Python 3 in 2026. See the project history.

License

BSD 3-Clause. LICENSE includes the original ORNL provenance note.

pyxsd

What it does

Install

Install uv (if you don’t have it)

Open the Claude desktop app’s settings file

Paste these settings and save the file

Quit Claude and open it again

Try it

What you can do instead

Install uv (if you don’t have it)

Open Terminal

Paste this command and press Enter

Type /mcp in Claude Code

Try it

Install uv (if you don’t have it)

Click this button to open Cursor

Open the AI chat in Cursor in Agent mode

Try it

Install uv (if you don’t have it)

Click this button to open VS Code

Open the AI chat in VS Code in Agent mode

Try it

Installed on your computer

At a glance

Which apps can use it

Related guides

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

Published vulnerabilities (OSV.dev)

Discussion

User reviews

Compared with others in Docs, sheets & office worki

Common questions

Similar alternatives

Puter MCP

XcodeBuildMCP

Anki MCP Server

Sosumi

Zapier

README from the maker

pyxsd

Install

Quickstart

Work with your data

Scope and limits

Documentation and contributing

License