Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add mendixlabs/mxcli --skill alter-pagegit clone --depth 1 https://github.com/mendixlabs/mxcliWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/mendixlabs/mxcli/alter-page)<a href="https://agentmods.dev/skills/mendixlabs/mxcli/alter-page"><img src="https://agentmods.dev/badge/skills/mendixlabs/mxcli/alter-page/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/mendixlabs/mxcli/alter-page"><img src="https://agentmods.dev/badge/skills/mendixlabs/mxcli/alter-page.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00084 | $0.08009 |
| Opus 5.5 | $0.00034 | $0.03204 |
| Sonnet 5.5 | $0.00017 | $0.01602 |
| Haiku 4.5 | $0.00008 | $0.00801 |
Grade A, and why
alter-page scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured today.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 701 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Find it fast
sed -n '<from>,<to>p' SKILL.md one section rather than reading the file;
./mxcli syntax <topic> answers how do I write this for a fraction of either.
| lines | section |
|---|---|
| 28-31 | Overview |
| 32-56 | When to Use |
| 57-107 | Syntax |
| 108-473 | Operations |
| 474-552 | Examples |
| 553-643 | DataGrid 2 columns: how to address them, and what you can set |
| 644-655 | Common Mistakes |
| 656-677 | Limitations — prefer binding at page creation (ledger finding #45) |
| 678-685 | Validation Checklist |
| 686-695 | Related Commands |
| 696-700 | Related Skills |
ALTER PAGE / ALTER SNIPPET - Modify Existing Pages and Snippets
Overview
ALTER PAGE and ALTER SNIPPET modify an existing page or snippet's widget tree in-place without requiring a full create or modify. Operations work directly on the raw BSON tree, preserving widget types and properties that MDL doesn't explicitly model.
When to Use
| Scenario | Use |
|---|---|
| Change a button caption, label, or style | alter page with set |
| Add a field to an existing form | alter page with insert |
| Remove unused widgets | alter page with drop |
| Replace a footer or section | alter page with replace |
| Several related changes on the same page | alter page with multiple operations in one block |
Same property across many pages (e.g., add Class to every Container) |
update widgets — see bulk-widget-updates |
| Rebuild entire page from scratch (pages your scripts own only) | create or modify page |
| Create a new page | create page |
Rule of thumb:
alter page— targeted edits to one page. Combine multiple ops in one block when they belong together.update widgets— cross-page bulk updates withWHEREfiltering andDRY RUN.create or modify page— redefining the full page structure of a page your MDL scripts own.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- today Changed · +1 lines f098212d3bc7
- yesterday Changed · +12 lines c97236281fbb
- 3d ago Changed · +14 lines 5b47e6900236
- 5d ago Changed · +20 lines f90e85988f13
- 6d ago Changed 17bb8ad39c77
- 7d ago Changed · +27 lines 99da2b158b64
- 8d ago Changed · +6 lines 3e1cd6d35c0c
- 13d ago Changed · +4 lines db65273882c3
- 14d ago Changed · +14 lines 42974a07adef
- 15d ago First seen · 603 lines · 84 tokens per session scan A 4d29f0f4df11
alter-page is a skill published in the GitHub repository mendixlabs/mxcli (130 stars, last pushed yesterday), licensed Apache-2.0. It adds 84 tokens to every session and 8,009 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other skills, from other repositories
stuck
Diagnose frozen, stuck, or slow Qwen Code sessions on this machine. Scans for problematic processes, high CPU/memory usage, hung subprocesses, and debug logs. Use /stuck or /stuck to focus on a specific process.
e2e-testing
Guide for running end-to-end tests of the Qwen Code CLI, including headless mode, MCP server testing, and API traffic inspection. Use this skill whenever you need to verify CLI behavior with real model calls, reproduce user-reported bugs end-to-end, test MCP tool integrations, or inspect raw API request/response…
structured-debugging
Hypothesis-driven debugging methodology for hard bugs. Use this skill whenever you're investigating non-trivial bugs, unexpected behavior, flaky tests, or tracing issues through complex systems. Activate proactively when debugging requires more than a quick glance — especially when the first attempt at a fix didn't…
desktop-brand-builder
Generate a branded Qwen Code desktop package from the Tauri desktop shell using a minimal brandId and logo. Use when the user wants a custom, white-label, or rebranded desktop client, installer, DMG/EXE/AppImage/deb, or one-click brand build on top of packages/desktop.
batch-api
Prepare a many-file, single-turn transform (translate, rewrite, extract) as a plan and submit it to the asynchronous, half-price DashScope Batch API; results are delivered as new files hours later. Invoke explicitly with /batch-api.
workflow-creator
Create or update reusable Dynamic Workflow JavaScript files under .qwen/workflows. Use when the user asks to create, save, edit, or reuse a Dynamic Workflow, including requests started from the Web Shell Workflows page.