mutations

mutations is a command for coding agents from cesarandreslopez/tauri-agent-tools. It costs 0 tokens per session (509 once invoked), scanned A, original, MIT.

A command that watches a selected part of a web page for DOM mutations, meaning changes such as elements being added, removed, or having their attributes changed.

In plain words
What is it for?
Use it to monitor lists, sidebars, or other elements and receive timestamped text or one-JSON-object-per-line output.
Why use it?
It shows when a page section changes, helping you investigate dynamic interfaces without modifying them. It requires an active bridge connection.

Command

Install

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.

agentmods
npx agentmods add commands/cesarandreslopez/tauri-agent-tools/mutations
Clone the repo
git clone --depth 1 https://github.com/cesarandreslopez/tauri-agent-tools

Wrote 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.

agentmods badge for mutations

README.md
[![agentmods](https://agentmods.dev/badge/commands/cesarandreslopez/tauri-agent-tools/mutations.svg)](https://agentmods.dev/commands/cesarandreslopez/tauri-agent-tools/mutations)
Your own site
<a href="https://agentmods.dev/commands/cesarandreslopez/tauri-agent-tools/mutations"><img src="https://agentmods.dev/badge/commands/cesarandreslopez/tauri-agent-tools/mutations.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 509 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00000 $0.00509
Opus 5 $0.00000 $0.00254
Sonnet 5 $0.00000 $0.00102
Haiku 4.5 $0.00000 $0.00051

Measured 5d ago against content hash a8b71dac9c8f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

mutations 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 5d ago.

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.

docs/commands/mutations.md · 73 lines

How it starts

The opening of the file, as written. The whole thing — 73 lines — stays where its author put it; the contents beside it link to each section on GitHub.

mutations

Watch DOM mutations on a CSS selector in real-time (read-only).

!!! note "Bridge Required" This command requires an active bridge connection.

Usage

tauri-agent-tools mutations <selector> [options]

Options

Option Description Default
<selector> CSS selector of the element to observe (required)
--attributes Also watch attribute changes
--interval <ms> Poll interval in milliseconds 500
--duration <ms> Auto-stop after N milliseconds
--json Output one JSON object per line
--port <number> Bridge port (auto-discover if omitted)
--token <string> Bridge token (auto-discover if omitted)

Examples

Watch for child additions/removals

tauri-agent-tools mutations "#todo-list" --duration 10000
[14:30:00.500] childList #todo-list +.todo-item
[14:30:02.100] childList #todo-list -.todo-item

Watch attribute changes too

tauri-agent-tools mutations ".sidebar" --attributes --duration 5000
[14:30:01.200] attr .sidebar class: sidebar → sidebar expanded

JSON output for automation

tauri-agent-tools mutations "#app" --json --duration 10000

Quick 5-second observation

tauri-agent-tools mutations "body" --duration 5000 --interval 200

How It Works

  1. Patches a MutationObserver into the webview targeting the specified selector
  2. Polls the accumulated mutation log at the configured interval
  3. Formats and outputs each mutation entry
  4. Disconnects the observer and cleans up global state on exit (Ctrl+C, SIGTERM, or --duration)

Important Notes

  • Always use --duration in automation to avoid indefinite execution.
  • The observer watches childList and subtree by default. Add --attributes to also track attribute changes.
  • If a previous session didn't clean up (e.g., hard kill), the command will warn and drain the existing log.

Read the full file on GitHub · 73 lines

Changes

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.

  1. 5d ago First seen · 73 lines · 0 tokens per session scan A a8b71dac9c8f

Subscribe to this mod's changes

mutations is a command published in the GitHub repository cesarandreslopez/tauri-agent-tools (22 stars, last pushed 11d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 509 tokens. 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.